Abstract
Changes in global climate and the nonstop increase in demographic pressure have provoked a stronger demand for agronomic resources at a time where land suitable for agriculture is becoming a rare commodity. They have also generated a number of abiotic stresses which exacerbate effects of diseases and pests and result in physiological and metabolic disorders that ultimately impact on yield when and where it is most needed. Therefore, a major scientific and agronomic challenge today is that of understanding and countering the impact of stress on yield. In this respect, in vitro biotechnology would be an efficient and feasible breeding alternative, particularly now that the genetic and genomic tools needed to unravel the mechanisms underlying the acquisition of tolerance to stress have become available. Legumes in general play a central role in a sustainable agriculture due to their capacity to symbiotically fix the atmospheric nitrogen, thereby reducing the need for fertilizers. They also produce grains that are rich in protein and thus are important as food and feed. However, they also suffer from abiotic stresses in general and osmotic stress and salinity in particular. This chapter provides a detailed overview of the methods employed for in vitro selection in the model legume Medicago truncatula for the generation of novel germplasm capable of resisting NaCl- and PEG-induced osmotic stress. We also address the understanding of the genetic determinism in the acquisition of stress resistance, which differs between NaCl and PEG. Thus, the expression of genes linked to growth (WEE1), in vitro embryogenesis (SERK), salt tolerance (SOS1) proline synthesis (P5CS), and ploidy level and cell cycle (CCS52 and WEE1) was upregulated under NaCl stress, while under PEG treatment the expression of MtWEE1 and MtCCS52 was significantly increased, but no significant differences were observed in the expression of genes MtSERK1 and MtP5CS, and MtSOS1 was downregulated. A number of morphological and physiological traits relevant to the acquisition of stress resistance were also assessed, and methods used to do so are also detailed.
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References
Ochatt SJ (2015) Agroecological impact of an in vitro biotechnology approach of embryo development and seed filling in legumes. Agron Sustain Dev 35:535–552
Atif RM, Patat-Ochatt EM, Svabova L et al (2013) Gene transfer in legumes. In: Lüttge U, Beyschlag W, Francis D, Cushman J (eds) Progress in botany, vol 74. Springer, Berlin, Heidelberg, pp 37–100
Gatti I, Guindón F, Bermejo C et al (2016) In vitro tissue culture in breeding programs of leguminous pulses: use and current status. Plant Cell Tissue Organ Cult 127:543–559
Jacob C, Carrasco B, Schwember AR (2016) Advances in breeding and biotechnology of legume crops. Plant Cell Tissue Organ Cult 127:561–584
Araújo SS, Beebe S, Crespi M et al (2015) Abiotic stress responses in legumes: strategies used to cope with environmental challenges. Crit Rev Plant Sci 34:237–280
Araújo S, Balestrazzi A, Faè M et al (2016) MtTdp2α-overexpression boosts the growth phase of Medicago truncatula cell suspension and increases the expression of key genes involved in the antioxidant response and genome stability. Plant Cell Tissue Organ Cult 127:675–680
Duque AS, López-Gómez M, Kráčmarová J et al (2016) Genetic engineering of polyamine metabolism changes Medicago truncatula responses to water deficit. Plant Cell Tissue Organ Cult 127:681–690
Elmaghrabi AM, Ochatt S, Rogers HJ, Francis D (2013) Enhanced tolerance to salinity following cellular acclimation to increasing NaCl levels in Medicago truncatula. Plant Cell Tissue Org Cult 114:61–70
Elmaghrabi AM, Rogers HJ, Francis D, Ochatt SJ (2017) PEG induces high expression of the cell cycle checkpoint gene WEE1 in embryogenic callus of Medicago truncatula: potential link between cell cycle checkpoint regulation and osmotic stress. Front Plant Sci 8:1479. https://doi.org/10.3389/fpls.2017.01479
Badri M, Ilahi H, Huguet T et al (2007) Quantitative and molecular genetic variation in sympatric populations of Medicago laciniata and M. truncatula (Fabaceae): relationships with eco-geographical factors. Genet Res 89:107–122
Motan JF, Becana M, Iturbeormaetxe I et al (1994) Drought induces oxidative stress in pea plants. Planta 194:346–352
Gonzalez EM, Aparicio-Tejo PM, Gondon AJ et al (1998) Water-deficit effects on carbon and nitrogen metabolism of pea nodules. J Exp Bot 49:1705–1714
Costa França MG, Pham Thi AT, Pimentel C et al (2000) Differences in growth and water relations among Phaseolus vulgaris cultivars in response to induced drought stress. Environ Exp Bot 43:227–237
Galvez L, Gonzalez EM, Arrese-Igor C (2005) Evidence for carbon flux shortage and strong carbon/nitrogen interaction in pea nodules at early stages of water stress. J Exp Bot 56:2551–2561
Zahaf O, Blanchet S, de Zélicourt A et al (2012) Comparative transcriptomic analysis of salt adaptation in roots of contrasting Medicago truncatula genotypes. Mol Plant 5:1068–1081
Alcântara A, Morgado RS, Silvestre S et al (2015) A method to identify early-stage transgenic Medicago truncatula with improved physiological response to water deficit. Plant Cell Tissue Organ Cult 122:605–616
Nunes CMJ, Araújo SS, Marques da Silva J et al (2008) Physiological responses of the legume model Medicago truncatula cv. Jemalong to water deficit. Environ Exp Bot 63:289–296
Queiros F, Fidalgo F, Santos I, Salema R (2007) In vitro selection of salt tolerant cell lines in Solanum tuberosum L. Biol Plant 51:728–734
Feki K, Quintero FJ, Pardo JM, Masmoudi K (2011) Regulation of durum wheat NaC/HC exchanger TdSOS1by phosphorylation. Plant Mol Biol 76:545–556
Tester M, Leigh RA (2001) Partitioning of transport processes in roots. J Exp Bot 52:442–457
Tester M, Davenport R (2003) Na+ tolerance and Na+ transport in higher plants. Ann Bot 91:503–507
Kim DY, Jin J-Y, Alejandro S et al (2010) Overexpression of AtABCG36 improves drought and salt stress resistance in Arabidopsis. Physiol Plant 139:170–180
Alet IA, Sánchez SH, Cuevas CJ et al (2012) New insights into the role of spermine in Arabidopsis thaliana under long-term salt stress. Plant Sci 182:94–100
Munns R (2002) Comparative physiology of salt and water stress. Plant Cell Environ 25:239–250
Hasegawa PM, Bressan RA, Zhu J-K, Bohnert HJ (2000) Plant cellular and molecular responses to high salinity. Annu Rev Plant Physiol Plant Mol Biol 51:463–499
Hernandez JA, Campillo A, Jimenez A et al (1999) Response of antioxidant system and leaf water relation to NaCl stress in pea plants. New Phytol 141:241–251
Abebe T, Guanzi AC, Martin B, Cushman JC (2003) Tolerance of mannitol accumulating transgenic wheat to water stress and salinity. Plant Physiol 131:1748–1755
Trapp S, Feificova D, Rasmussen FN, Bauer-Gottein P (2008) Plant uptake of NaCl in relation to enzyme kinetics and toxic effects. Environ Exp Bot 64:1–7
Trinchant JC, Boscari A, Spennato G et al (2004) Proline betaine accumulation and metabolism in alfalfa plants under sodium chloride stress. Exploring its compartmentalization in nodules. Plant Physiol 135:1583–1594
Negrão S, Schmöckel SM, Tester M (2017) Evaluating physiological responses of plants to salinity stress. Ann Bot 119:1–11. https://doi.org/10.1093/aob/mcw191
Yang W-J, Rich PJ, Axtell JD et al (2003) Genotypic variation for glycinebetaine in sorghum. Crop Sci 43:162–169
Parida AK, Das AB (2005) Salt tolerance and salinity effects on plants: a review. Ecotoxicol Environ Saf 60:324–349
Aydi S, Sassi S, Debouba M et al (2010) Resistance of Medicago truncatula to salt stress is related to glutamine synthetase activity and sodium sequestration. J Plant Nutr Soil Sci 173:892–899
Surjus A, Durand M (1996) Lipid changes in soybean root membranes in response to salt treatment. J Exp Bot 47:17–23
Chen J-B, Wang S-M, Jing R-L, Mao X-G (2009) Cloning the PvP5CS gene from common bean (Phaseolus vulgaris) and its expression patterns under abiotic stresses. J Plant Physiol 166:12–19
Choudhary NL, Sairam RK, Tyagi A (2005) Expression of 1-pyrroline−5 carboxylate synthetase gene during drought in rice (Oryza sativa L.). Indian J Biochem Biophys 42:366–370
Silva-Ortega CO, Ochoa-Alfaro AE, Reyes-Agüero JA et al (2008) Salt stress increases the expression of p5cs gene and induces proline accumulation in cactus pear. Plant Physiol Biochem 46:82–92
Somboonwatthanaku I, Dorling S, Leung S et al (2010) Proline biosynthetic gene expression in tissue cultures of rice (Oryza sativa L.) in response to saline treatment. Plant Cell Tissue Organ Cult 103:369–376
Sairam RK, Tyagi A (2004) Physiology and molecular biology of salinity stress tolerance in plants. Curr Sci 86:407–421
Vinocur B, Altman A (2005) Recent advances in Engineering plant tolerance to abiotic stress: achievements and limitations. Curr Opin Biotechnol 16:1913–1923
Zsigmond L, Szepesib A, Tari I et al (2012) Overexpression of the mitochondrial PPR40 gene improves salt tolerance in Arabidopsis. Plant Sci 182:87–93
Shi HZ, Lee B-H, Wu S-J, Zhu J-K (2003) Overexpression of a plasma membrane Na?/H? Antiporter gene improves salt tolerance in Arabidopsis thaliana. Nat Biotechnol 21:81–85
Türkan I, Demiral T (2009) Recent developments in understanding salinity tolerance. Environ Exp Bot 67:2–9
Tang R-J, Liu H, Bao Y et al (2010) The woody plant poplar has a functionally conserved salt overly sensitive pathway in response to salinity stress. Plant Mol Biol 74:367–380
Li D, Zhang Y, Hu X et al (2011) Transcriptional profiling of Medicago truncatula under salt stress identified a novel CBF transcription factor MtCBF4 that plays an important role in abiotic stress responses. BMC Plant Biol 11:109. https://doi.org/10.1186/1471-2229-11-109
Cabuslay SG, Ito O, Alejar AA (2002) Physiological evaluation of responses of rice (Oryza sativa L.) to water deficit. Plant Sci 163:815–827
Levitt J (1972) Responses of plants to environmental stresses. Academic Press, New York, NY
Zhu J-K (2002) Salt and drought stress signal transduction in plants. Annu Rev Plant Biol 53:2273–2467
Golldack D, Li C, Mohan H et al (2014) Tolerance to drought and salt stress in plants: unraveling the signaling networks. Front Plant Sci 5:151. https://doi.org/10.3389/fpls.2014.00151
Valliyodan B, Nguyen HT (2006) Understanding regulatory networks and engineering for enhanced drought tolerance in plants. Curr Opin Plant Biol 9:189–195
Fulda S, Mikkat S, Stegmann H, Horn R (2011) Physiology and proteomics of drought stress acclimation in sunflower (Helianthus annuus L.). Plant Biol 13:632–642
Deinlein U, Stephan AB, Horie T et al (2014) Plant salt-tolerance mechanisms. Trends Plant Sci 19:371–379
Ochatt S, Muilu R, Ribalta F (2008) Cell morphometry and osmolarity as early indicators of the onset of embryogenesis from cell suspension cultures of grain legumes and model systems. Plant Biosyst 142:480–486
Ochatt SJ, Moessner A (2010) Rounding up plant cells. Int J Plant Biol 1:e8. https://doi.org/10.4081/pb.2010.e8
Cushman JC, Bohnert HJ (2000) Genomic approaches to plant stress tolerance. Curr Opin Plant Biol 3:117–124
Sreenivasulu N, Varshney RK, Kavi Kishor PB et al (2004) Functional genomics for tolerance to abiotic stress in cereals: a functional genomics approach. In: Gupta PK, Varshney RK (eds) Cereal genomic. Springer, Dordrecht, pp 483–514. https://doi.org/10.1007/1-4020-2359-6_16
De Schutter K, Joubes J, Cools T et al (2007) Arabidopsis WEE1 kinase controls cell cycle arrest in response to activation of the DNA integrity checkpoint. Plant Cell 19:211–225
Gill SS, Tuteja N (2010) Reactive oxygen species and antioxidant machinery in abiotic stress tolerance in crop plants. Plant Physiol Biochem 48:909–930
Zhao L, Wang P, Hou H et al (2014) Transcriptional regulation of cell cycle genes in response to abiotic stresses correlates with dynamic changes in histone modifications in maize. PLoS One 9:e106070. https://doi.org/10.1371/journal.pone.0106070
Roy S (2016) Function of MYB domain transcription factors in abiotic stress and epigenetic control of stress response in plant genome. Plant Signal Behav 11:e1117723. https://doi.org/10.1080/15592324.2015.1117723
Sorrell DA, Marchbank A, McMahon K et al (2002) A WEE1 homologue from Arabidopsis thaliana. Planta 215:518–522
West G, Inzé D, Beemster GTS (2004) Cell cycle modulation in the response of the primary root of Arabidopsis to salt stress. Plant Physiol 135:1050–1058
Skirycz A, Claeys H, De Bodt S et al (2011) Pause-and-stop: the effects of osmotic stress on cell proliferation during early leaf development in Arabidopsis and a role for ethylene signaling in cell cycle arrest. Plant Cell 23:1876–1888
Gonzalez N, Hernould M, Delmas F et al (2004) Molecular characterization of a WEE1 gene homologue in tomato (Lycopersicon esculentum mill.). Plant Mol Biol 56:849–861
Gonzalez N, Gevaudant F, Hernould M, Chevalier C, Mouras A (2007) The cell cycle associated protein kinase WEE1 regulates cell size in relation to endoreduplication in developing tomato fruit. Plant J 51:642–655
Sun Y, Dilkes BP, Zhang C et al (1999) Characterization of maize (Zea mays L.) Wee1 and its activity in developing endosperm. Proc Natl Acad Sci U S A 96:4180–4185
Cebolla A, Vinardell JM, Kiss E et al (1999) The mitotic inhibitor ccs52 is required for endoreduplication and ploidy-dependent cell enlargement in plants. EMBO J 18:4476–4484
Larson-Rabin Z, Li Z, Masson PH, Day CD (2009) FZR2/CCS52A1 expression is a determinant of endoreduplication and cell expansion in Arabidopsis. Plant Physiol 149:874–884
Nolan KE, Rose RJ, Gorst JG (1989) Regeneration Medicago truncatula from tissue culture: increased somatic embryogenesis using explants from regenerated plants. Plant Cell Rep 8:278–281
Chabaud M, Larsonneau C, Marmouget C et al (1996) Transformation of barrel medic (Medicago truncatula Gaertn.) by agrobacterium tumefaciens and regeneration via somatic embryogenesis of transgenic plants with the MtENOD12 nodulin promoter fused to the gus reporter gene. Plant Cell Rep 15:305–310
Hoffmann B, Trinh TH, Leung J et al (1997) A new Medicago truncatula line with superior in vitro regeneration, transformation and symbiotic properties isolated through cell culture selection. Mol Plant-Microbe Interact 10:307–315
Trinh TH, Ratet P, Kondorosi E et al (1998) Rapid and efficient transformation of diploid Medicago truncatula and Medicago sativa ssp. Falcata lines improved in somatic embryogenesis. Plant Cell Rep 17:345–355
Wang X-D, Nolan KE, Irwanto RR et al (2011) Ontogeny of embryogenic callus in Medicago truncatula: the fate of the pluripotent and totipotent stem cells. Ann Bot 107:599–609
Iantcheva A, Vlahova M, Bakalova E et al (1999) Regeneration of diploid annual medics via direct somatic embryogenesis promoted by thidiazuron and benzylaminopurine. Plant Cell Rep 18:904–910
Iantcheva A, Vlahova M, Trinh TH et al (2001) Assessment of polysomaty, embryo formation and regeneration in liquid media for various species of diploid annual Medicago. Plant Sci 160:621–627
Svetoslavova G, Vlahova M, Iantcheva A et al (2005) High frequency plant regeneration of diploid Medicago coerulea through somatic embryogenesis. Biotech Biotech Equip 19:57–61
Duque AS, Pires AS, Santos DM et al (2006) Efficient somatic embryogenesis and plant regeneration from long-term cell suspension cultures of Medicago truncatula cv. Jemalong. In Vitro Cell Dev Biol Plant 42:270–273
Ochatt S, Jacas L, Patat-Ochatt EM, Djennane S (2013) Flow cytometric analysis and molecular characterization of agrobacterium tumefaciens-mediated transformants of Medicago truncatula. Plant Cell Tissue Organ Cult 113:237–244
Anjanasree K, Neelakandan WK (2012) Recent progress in the understanding of tissue culture-induced genome level changes in plants and potential applications. Plant Cell Rep 31:597–620
Kaeppler SM, Kaeppler HF, Rhee Y (2000) Epigenetic aspects of somaclonal variation in plants. Plant Mol Biol 43:179–188
Jain SM (2001) Tissue culture-derived variation in crop improvement. Euphytica 118:153–166
Sotirova V, Shtereva L, Zagorska N et al (1999) Resistance responses of plants regenerated from tomato anther and somatic tissue cultures to Clavibacter michiganense. Israel J Plant Sci 47:237–243
Lu S, Peng X, Guo Z et al (2007) In vitro selection of salinity tolerant variants from triploid bermudagrass (Cynodon transvaalensis x C. dactylon) and their physiological responses to salt and drought stress. Plant Cell Rep 26:1413–1420
Ochatt SJ, Power JB (1989) Selection for salt/drought tolerance using protoplast and explant-derived tissue cultures of Colt cherry (Prunus avium x pseudocerasus). Tree Physiol 5:259–266
Ochatt SJ, Power JB (1989) Cell wall synthesis and salt (saline) sensitivity of Colt cherry (Prunus avium x pseudocerasus) protoplasts. Plant Cell Rep 8:365–367
Ochatt SJ, Marconi PL, Radice S et al (1999) In vitro recurrent selection of potato: production and characterization of salt tolerant cell lines and plants. Plant Cell Tissue Org Cult 55:1–8
Chen S, Chai M, Jia Y et al (2011) In vitro selection of salt tolerant variants following 60Co gamma irradiation of longterm callus cultures of Zoysia matrella [L.] Merr. Plant Cell Tissue Organ Cult 107:493–500
Davenport SB, Gallego SM, Benavides MP et al (2003) Behaviour of antioxidant defense system in the adaptive response to salt stress in Helianthus annuus L. cells. Plant Growth Reg 40:81–88
Gu R, Liu Q, Pei D, Jiang X (2004) Understanding saline and osmotic tolerance of Populus euphratica suspended cells. Plant Cell Tissue Organ Cult 78:261–265
Basu S, Gangopadhyay G, Mukherjee BB, Gupta S (1997) Plant regeneration of salt adapted callus of indica rice (var.Basmati 370) in saline condition. Plant Cell Tissue Organ Cult 50:153–159
Tao L, Van Staden SJ (2000) Selection and characterization of sodium chloride-tolerant callus of Glycine max (L) Merr cv. Acme. Plant Growth Reg 31:195–207
Zhu J-K (2000) Genetic analysis of plant salt tolerance using Arabidopsis. Plant Physiol 124:941–948
Shi H, Quintero FJ, Pardo JM, Zhu JK (2002) The putative plasma membrane Na+/H+ antiporter SOS1 controls long-distance Na+ transport in plants. Plant Cell 14:465–477
Merchan F, Breda C, Hormaeche JP et al (2003) A Kruppel-like transcription factor gene is involved in salt stress responses in Medicago spp. Plant Soil 257:1–9
Veatch ME, Smith SE, Vandemark G (2004) Shoot biomass production among accession of Medicago truncatula exposed to NaCl. Crop Sci 44:1008–1013
Machuka J, Rasha AO, Magiri E et al (2008) In vitro selection and characterization of drought tolerant somaclones of tropical Maize (Zea mays L.). Biotechnology 7:641–650
Claeys H, Van Landeghem S, Dubois M et al (2014) What is stress? Dose-response effects in commonly used in vitro stress assays. Plant Physiol 165:519–527
Zhang L, Ma H, Chen T et al (2014) Morphological and physiological responses of cotton (Gossypium hirsutum L.) plants to salinity. PLoS One 9(11):e112807
Kurth E, Cramer GR, Lauchli A, Epstein E (1986) Effects of NaCI and CaCl2 on cell enlargement and cell production in cotton roots. Plant Physiol 82:1102–1106
Farooq M, Wahid A, Kobayashi N (2009) Plant drought effects, mechanisms and management. Agron Sustain Dev 29:185–212
Ochatt SJ (1994) In vitro selection for salt/drought tolerance in Colt cherry. In: Bajaj YPS (ed) Biotechnology in agriculture and forestry, Somaclonal variation in crop improvement II, vol 36. Springer-Verlag, Heidelberg, pp 223–238
Nolan KE, Irwanto RR, Rose RJ (2003) Auxin up-regulates MtSERK1 expression in both Medicago truncatula root-forming and embryogenic cultures. Plant Physiol 133:218–230
Nolan KE, Kurdyukov S, Rose RJ (2009) Expression of the somatic embryogenesis receptor like kinase1 (SERK1) gene is associated with developmental change in the life cycle of model legume Medicago truncatula. J Exp Bot 60:1759–1771
Liu L, White MJ, MacRae TH (1999) Transcription factors and their genes in higher plants. Functional domains, evolution and regulation. Eur J Biochem 262:247–257
Miki Y, Hashiba M, Hisajima S (2001) Establishment of salt stress tolerant rice plant through set up NaCl treatment in vitro. Plant Biol 44:391–395
Yamaguchi T, Blumwald E (2005) Developing salt-tolerant crop plants: challenges and opportunities. Trends Plant Sci 10(12):615–620
Leone A, Costa A, Tucci M, Grillo S (1994) Adaptation versus shock response to polyethylene glycol-induced low water potential in cultured potato cells. Physiol Plant 92:21–30
Gossett DR, Banks SW, Millhollon EP, Lucas MC (1996) Antioxidant response to NaCl stress in a control and a NaCl-tolerant cotton cell line grown in the presence of paraquat, buthionine sulfoximine and exogenous glutathione. Plant Physiol 112:803–809
Shankhdhar D, Shankhdhar SC, Mani SC (2000) In vitro selection for salt tolerance in rice. Plant Biol 43:477–480
Ochatt SJ, Pontecaille C, Rancillac M (2000) The growth regulators used for bud regeneration and shoot rooting affect the competence for flowering and seed set in regenerated plants of protein pea. In Vitro Cell Dev Biol Plants 36:188–193
Rubio MC, González EM, Minchin FR et al (2002) Effects of water stress on antioxidant enzymes of leaves and nodules of transgenic alfalfa overexpressing superoxide dismutases. Plant Physiol 115:531–540
Hu H, Xiong L, Yang Y (2005) Rice SERK1 gene positively regulates somatic embryogenesis of cultured cell and host defense response against fungal infection. Planta 222:107–117
Sakthivelu G, Akitha Devi MK, Giridhar P et al (2008) Drought-induced alterations in growth, osmotic potential and in vitro regeneration of soybean cultivars. Gen Appl Plant Physiol 34:103–112
Guóth A, Benyo D, Csiszar J et al (2010) Relationship between osmotic stress-induced abscisic acid accumulation, biomass production and plant growth in drought-tolerant and -sensitive wheat cultivars. Acta Physiol Plant 32:719–727
Mahmood I, Razzaq A, Hafiz AI et al (2012) Interaction of callus selection media and stress duration for in vitro selection of drought tolerant callus of wheat. Afr J Biotechnol 11:4000–4006
Rai MK, Kaliaa RK, Singh R et al (2011) Developing stress tolerant plants through in vitro selection—an overview of the recent progress. Environ Exp Bot 71:89–98
Yang L, Li Y, Shen H (2012) Somatic embryogenesis and plant regeneration from immature zygotic embryo cultures of mountain ash (Sorbus pohuashanensis). Plant Cell Tissue Organ Cult 109:547–556
Michel BE, Kaufmann MR (1973) The osmotic potential of polyethylene glycol 6000. Plant Physiol 51:914–916
Lu Z, Neumann PM (1998) Water-stressed maize, barley and rice seedlings show species diversity in mechanisms of leaf growth inhibition. J Exp Bot 49:1945–1952
Srivastava DK, Gupta VK, Sharma DR (1995) In vitro selection and characterization of water stress tolerant callus cultures of tomato (Lycopersicon esculentum L.). Indian J Plant Physiol 38:99–104
Attree SM, Pomeroy MK, Fowke LC (1995) Development of white spruce (Picea glauca (Moench.) Voss) somatic embryos during culture with abscisic acid and osmoticum, and their tolerance to drying and frozen storage. J Exp Bot 46:433–439
Igasaki T, Sato T, Akashi N et al (2003) Somatic embryogenesis and plant regeneration from immature zygotic embryos of Cryptomeria japonica D. Don. Plant Cell Rep 22:239–243
Macovei A, Balestrazzi A, Confalonieri M, Carbonera D (2010) The Tyrosyl-DNA phosphodiesterase gene family in Medicago truncatula Gaertn.: bioinformatic investigation and expression profiles in response to copper- and PEG-mediated stress. Planta 232:393–407
Balestrazzi A, Confalonieri M, Macovei A, Carbonera D (2011) Seed imbibition in Medicago truncatula Gaertn.: expression profiles of DNA repair genes in relation to PEG-mediated stress. J Plant Physiol 168:706–713
Pintos B, Martin JP, Centeno ML et al (2002) Endogenous cytokinin levels in embryogenic and non- embryogenic calli of Medicago arborea L. Plant Sci 163:955–960
Elmaghrabi AM, Ochatt SJ (2006) Isoenzymes and flow cytometry for the assessment of true-to-typeness of calluses and cell suspension of barrel medic prior to regeneration. Plant Cell Tissue Organ Cult 85:31–43
Murashige T, Skoog F (1962) A revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiol Plant 15:473–497
Iantcheva A, Slavov S, Prinsen E et al (2005) Somatic embryogenesis of the model legume- Medicago truncatula and other diploid Medics. Plant Cell Tissue Organ Cult 81:37–43
Gamborg OL, Miller RA, Ojima K (1968) Nutrient requirements of suspension cultures of soybean root cells. Exp Cell Res 50:151–158
Schenk RU, Hildebrandt AC (1972) Medium and techniques for induction and growth of monocotyledonous and dicotyledonous plant cell cultures. Can J Bot 50:199–204
das Neves L, Duque S, de Almeida J et al (1999) Repetitive somatic embryogenesis in Medicago truncatula ssp. Narbonensis and M. truncatula Gaertn cv. Jemalong. Plant Cell Rep 18:398–405
Uchimiya T, Murashige M (1974) Evaluation of parameters in the isolation of viable protoplasts from cultured tobacco cells. Plant Physiol 54:936–944
Zafar Y, Nenz E, Damiani F et al (1995) Plant regeneration from explant and protoplast derived calluses of Medicago littoralis. Plant Cell Tissue Organ Cult 41:41–48
Denchev P, Velcheva M, Atanassov A (1991) A new approach to direct somatic embryogenesis in Medicago. Plant Cell Rep 10:338–341
Vergana R, Verbc F, Pitto L et al (1990) Reversible variation in the methylation pattern of carrot DNA during somatic embryogenesis. Plant Cell Tissue Organ Cult 8:697–701
Scarpa GM, Pupilli F, Damiani F, Arcioni S (1993) Plant regeneration from callus and protoplasts in Medicago polymorpha. Plant Cell Tissue Organ Cult 35:49–57
Chabaud M, de Carvalho-Niebel F, Barker DG (2003) Efficient transformation of Medicago truncatula cv. Jemalong using the hypervirulent Agrobacterium tumefaciens strain AGL1. Plant Cell Rep 22:46–51
Troll W, Lindsley J (1955) A photometric method for the determination of proline. J Biol Chem 215:655–660
Boukel M, Houassine D (1997) Adaptation au stress hydrique de quelques variétés de blé dur (Triticum durum). Thèse Magistère, INA, Algérie 90 pp
Plummer DT (1987) Introduction to practical biochemistry, 3rd edn. McGraw Hill Book Company Ltd, London, pp 179–180
Yazici I, Türkan I, Sekmen SH et al (2007) Salinity tolerance of purslane (Portulaca oleracea L.) is achieved by enhanced antioxidative system, lower level of lipid peroxidation and proline accumulation. Environ Exp Bot 61:49–57
Smart RE, Bingham GE (1974) Rapid estimates of relative water content. Plant Physiol 53:258–260
Ochatt SJ (2008) Flow cytometry in plant breeding. Cytometry A 73:581–598
Widholm JM (1972) The use of fluorescein diacetate and phenosafranine for determining viability of cultured plant cells. Stain Technol 47:189–194
Oparka KJ (1991) Uptake and compartmentation of fluorescent probes by plant cells. J Exp Bot 42:565–579
Spadafora ND, Doonan JH, Herbert RJ et al (2011) Arabidopsis T-DNA insertional lines for CDC25 are hypersensitive to hydroxyurea but not to zeocin or salt stress. Ann Bot 107:1183–1192
Spadafora ND, Parfitt D, Li S et al (2012) Perturbation of cytokinin and ethylene-signalling pathways explain the strong rooting phenotype exhibited by Arabidopsis expressing the Schizosaccharomyces pombe mitotic inducer, cdc25. BMC Plant Biol 12:45
Price A, Orellana D, Salleh F et al (2008) A comparison of leaf and petal senescence in wallflower reveals common and distinct patterns of gene expression and physiology. Plant Physiol 147:1898–1912
Livak KJ, Schmittgen TD (2001) Analysis of relative gene expression data using real-time quantitative PCR and the 2-DDC method. Methods 25:402–408
Wagstaff C, Bramke I, Breeze E et al (2010) A specific group of genes respond to cold dehydration stress in cut Alstroemeria flowers whereas ambient dehydration stress accelerates developmental senescence expression patterns. J Exp Bot 61:2905–2921
Shinozaki K, Yamaguchi-Shinozaki K (2007) Gene networks involved in drought stress response and tolerance. J Exp Bot 58:221–227
Young DY, Udvardi M (2009) Translating Medicago truncatula genomics to crop legumes. Curr Opin Plant Biol 12:193–201
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Elmaghrabi, A.M., Rogers, H.J., Francis, D., Ochatt, S. (2018). Toward Unravelling the Genetic Determinism of the Acquisition of Salt and Osmotic Stress Tolerance Through In Vitro Selection in Medicago truncatula . In: Cañas, L., Beltrán, J. (eds) Functional Genomics in Medicago truncatula. Methods in Molecular Biology, vol 1822. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-8633-0_19
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DOI: https://doi.org/10.1007/978-1-4939-8633-0_19
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Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-8632-3
Online ISBN: 978-1-4939-8633-0
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