Alvarez J, Bueno N, Cortizo M, Ordás R (2013) Improving plantlet yield in Pinus pinaster somatic embryogenesis. Scand J For Res 28:613–620. https://doi.org/10.1080/02827581.2013.821516
Article
Google Scholar
Andrews M, Raven JA, Lea PJ (2013) Do plants need nitrate? The mechanisms by which nitrogen form affects plants. Ann Appl Biol 163:174–199. https://doi.org/10.1111/aab.12045
Article
CAS
Google Scholar
Barrett JD, Park YS, Bonga JM (1997) The effectiveness of various nitrogen sources in white spruce [Picea glauca (Moench) Voss] somatic embryogenesis. Plant Cell Rep 16:411–415
CAS
PubMed
Google Scholar
Bloom AJ, Sukrapanna SS, Warner RL (1992) Root respiration Associated with ammonium and nitrate absorption and assimilation by barley. Plant Physiol 99:1294–1301
Article
CAS
PubMed
PubMed Central
Google Scholar
Bozhkov P, von Arnold S (1998) Polyethylene glycol promotes maturation but inhibits further development of Picea abies somatic embryos. Physiol Plantarum 104:211–224
Article
CAS
Google Scholar
Bozhkov PV, Mikhlina SB, Shiryaeva GA, Lebedenko LA (1993) Influence of nitrogen balance of culture medium on Norway spruce [Picea abies (L.) Karst] somatic polyembryogenesis: high frequency establishment of embryonal-suspensor mass lines from mature zygotic embryos. J Plant Physiol 142:735–741
Article
CAS
Google Scholar
Canales J, Bautista R, Label P et al (2014) De novo assembly of maritime pine transcriptome: implications for forest breeding and biotechnology. Plant Biotechnol J 12:286–299
Article
CAS
PubMed
Google Scholar
Cánovas F, Avila C, Cantón F, Cañas R, de la Torre F (2007) Ammonium assimilation and amino acid metabolism in conifers. J Exp Bot 58:2307–2318
Article
CAS
PubMed
Google Scholar
Carlsson J, Svennerstam H, Moritz T, Egertsdotter U, Ganeteg U (2017) Nitrogen uptake and assimilation in proliferating embryogenic cultures of Norway spruce—investigating the specific role of glutamine. PLoS ONE 12(8):e0181785. https://doi.org/10.1371/journal.pone.0181785
Article
CAS
PubMed
PubMed Central
Google Scholar
Carneros E, Toribio M, Celestino C (2017) Effect of ABA, the auxin antagonist PCIB and partial desiccation on stone pine somatic embryo maturation. Plant Cell Tiss Organ Cult 131:445–458
Article
CAS
Google Scholar
Carrier DJ, Cunningham JE, Taylor DC, Dunstan DI (1997) Sucrose requirements and lipid utilization during germination of interior spruce (Picea glauca engelmannii complex) somatic embryos. Plant Cell Rep 16:550–554
Article
CAS
PubMed
Google Scholar
Ching TM (1966) Compositional changes of Douglas fir seeds during germination. Plant Physiol 41:1313–1319
Article
CAS
PubMed
PubMed Central
Google Scholar
Crawford N, Arst H (1993) The molecular genetics of nitrate assimilation in fungi and plants. Annu Rev Genet 27:115–146
Article
CAS
PubMed
Google Scholar
Dobrowolska I, Businge E, Abreu I, Moritz T, Egertsdotter U (2017) Metabolome and transcriptome profiling reveal new insights into somatic embryo germination in Norway spruce (Picea abies). Tree Physiol 37:1752–1766. https://doi.org/10.1093/treephys/tpx078
Article
CAS
PubMed
Google Scholar
Egertsdotter U, Clapham D (2011) Method for maturing and synchronizing conifer somatic embryos. Patent Pub. No.: US 2013/0065306 A1
Elhiti M, Stasolla C, Wang A (2013) Molecular regulation of plant somatic embryogenesis. In Vitro Cell Dev Biol Plant 49:631–642
Article
Google Scholar
Forde BG, Lea PJ (2007) Glutamate in plants: metabolism, regulation, and signalling. J Exp Bot 58:2339–2358
Article
CAS
PubMed
Google Scholar
Franklin O, Cambui CA, Gruffman L, Palmroth S, Oren R, Näsholm T (2017) The carbon bonus of organic nitrogen enhances nitrogen use efficiency of plants. Plant Cell Environ 40(1):25–35. https://doi.org/10.1111/pce.12772
Article
CAS
PubMed
Google Scholar
Gent L, Forde B (2017) How do plants sense their nitrogen status? J Exp Bot 68:2531–2540. https://doi.org/10.1093/jxb/erx013
Article
CAS
PubMed
Google Scholar
George E, de Klerk G-J (2008) The components of plant tissue culture media I: macro- and micro-nutrients. In: George E, Hall M, de Klerk G-J (eds) Plant propagation by tissue culture, vol 1, 3rd edn. The background. Springer, Dordrecht, pp 65–113
Google Scholar
Gifford D, Tolley M (1989) The seed proteins of white spruce and their mobilization following germination. Physiol Plantarum 77:254–261
Article
CAS
Google Scholar
Goldberg R, de Paiva G, Yadegari R (1994) Plant embryogenesis: Zygote to seed. Science 266:605–614
Article
CAS
PubMed
Google Scholar
Gruffman L, Palmroth S, Näsholm T (2013) Organic nitrogen uptake of Scots pine seedlings is independent of current carbohydrate supply. Tree Physiol 33:590–600
Article
CAS
PubMed
Google Scholar
Gruffman L, Jämtgård S, Näsholm T (2014) Plant nitrogen status and co-occurrence of organic and inorganic nitrogen sources influence root uptake by Scots pine seedlings. Tree Physiol 34:205–213
Article
CAS
PubMed
Google Scholar
Gullberg J, Jonsson P, Nordström A, Sjöström M, Moritz T (2004) Design of experiments: an efficient strategy to identify factors influencing extraction and derivatization of Arabidopsis thaliana samples in metabolomic studies with gas chromatography/mass spectrometry. Anal Biochem 331:283–295
Article
CAS
PubMed
Google Scholar
Hakman I (1993) Embryology in Norway spruce (Picea abies). An analysis of the composition of seed storage proteins and deposition of storage reserves during seed development and somatic embryogenesis. Physiol Plantarum 87:148–159
Article
CAS
Google Scholar
Hamasaki R, Purgatto E, Mercier H (2005) Glutamine enhances competence for organogenesis in pineapple leaves cultivated in vitro. Braz J Plant Physiol 17:383–389
Article
CAS
Google Scholar
Hanke GT, Kimata-Ariga Y, Taniguchi I, Hase T (2004) A post genomic characterization of arabidopsis ferredoxins. Plant Physiol 134:255–264. https://doi.org/10.1104/pp.103.032755
Article
CAS
PubMed
PubMed Central
Google Scholar
Hazubska-Przybył T, Wawrzyniak M (2017) Stimulation of somatic embryo growth and development in Picea spp. by polyethylene glycol. Dendrobiology 78:168–178
Article
CAS
Google Scholar
Hazubska-Przybył T, Wawrzyniak M, Obarska A, Bojarczuk K (2015) Effect of partial drying and desiccation on somatic seedling quality in Norway and Serbian spruce. Acta Physiol Plant 37:1735. https://doi.org/10.1007/s11738-014-1735-1
Article
Google Scholar
Hristoforoglu K, Schmidt J, Bolhar-Nordenkampf H (1995) Development and germination of Abies alba somatic embryos. Plant Cell Tiss Org 40:277–284
Article
Google Scholar
Huppe HC, Turpin DH (1994) Integration of carbon and nitrogen metabolism in plant and algal cells. Annu Rev Plant Physiol Plant Mol Biol 45:577–607
Article
CAS
Google Scholar
Joy KW, Hageman RH (1966) The purification and properties of nitrite reductase from higher plants, and its dependence on ferredoxin. Biochem J 100:263–273
Article
CAS
PubMed
PubMed Central
Google Scholar
Kaiser W, Weiner H, Kandlbinder A, Tsai C-B, Rockel P, Sonoda M, Planchet E (2002) Modulation of nitrate reductase: some new insights, an unusual case and a potentially important side reaction. J Exp Bot 53:875–882
Article
CAS
PubMed
Google Scholar
Kaul K, Hoffman SA (1993) Ammonium ion inhibition of Pinus strobus L. callus growth. Plant Sci 88(2):169–173
Article
CAS
Google Scholar
Khlifi S, Tremblay F (1995) Maturation of black spruce somatic embryos. Part I. Effect of L-glutamine on the number and germinability of somatic embryos. Plant Cell Tiss Org 41:23–32
Article
CAS
Google Scholar
King J, Gifford D (1997) Amino acid utilization in seeds of loblolly pine during germination and early seedling growth (I. Arginine and Arginase Activity). Plant Physiol 113:1125–1135. https://doi.org/10.1104/pp.113.4.1125
Article
CAS
PubMed
PubMed Central
Google Scholar
Kirby E (1982) The effects of organic nitrogen sources on growth of cell cultures of Douglas-fir. Physiol Plantarum 56:114–117
Article
CAS
Google Scholar
Klimaszewska K, Bernier-Cardou M, Cyr DR, Sutton BCS (2000) Influence of gelling agents on culture medium gel strength, water availability, tissue water potential, and maturation response in embryogenic cultures of Pinus strobus L. Vitro Cell Dev Biol Plant 36:279–286
Article
CAS
Google Scholar
Klimaszewska K, Morency F, Jones-Overton C, Cooke J (2004) Accumulation pattern and identification of seed storage proteins in zygotic embryos of Pinus strobus and in somatic embryos from different maturation treatments. Physiol Plant 121:682–690
Article
CAS
Google Scholar
Klimaszewska K, Hargreaves C, Lelu-Walter MA, Trontin JF (2016) Advances in conifer somatic embryogenesis since year 2000. In: Germanà MA, Lambardi M (eds) In vitro embryogenesis in higher plants. Humana Press, Hatfield, pp 131–166
Chapter
Google Scholar
Klubicová K, Uvácková L, Danchenko M, Nemecek P, Skultéty L, Salaj J, Salaj T (2017) Insights into the early stage of Pinus nigra Arn. somatic embryogenesis using discovery proteomics. J Proteom 169:99–111. https://doi.org/10.1016/j.jprot.2017.05.013
Article
CAS
Google Scholar
Krapp A (2015) Plant nitrogen assimilation and its regulation: a complex puzzle with missing pieces. Curr Opin Plant Biol 25:115–122
Article
CAS
PubMed
Google Scholar
Krasavina M, Burmistrova N, Raldugina G (2014) The role of carbohydrates in plant resistance to abiotic stresses. In: Ahmad P, Rasool S (eds) Emerging technologies and management of crop stress tolerance, vol 1. Elsevier Inc, San Diego, pp 229–270
Chapter
Google Scholar
Krogstrup P (1986) Embryo-like structures from cotyledons and ripe embryos of Norway spruce (Picea abies). Can J Forest Res 16:664–668
Article
Google Scholar
Kvaalen H, Appelgren M (1999) Light quality influences germination, root growth and hypocotyle elongation in somatic embryos but not in seedlings of Norway spruce. In Vitro Cell Dev Biol Plant 35:437–441
Article
Google Scholar
Lam HM, Coschigano K, Oliveira IC, Melo-Oliveira R, Coruzzi G (1996) The molecular-genetics of nitrogen assimilation into amino acids in higher plants. Annu Rev Plant Physiol Plant Mol Biol 47:569–593
Article
CAS
PubMed
Google Scholar
Lammer D, Gifford D (1989) Lodgepole pine seed germination. II. The seed proteins and their mobilization in the megagametophyte and embryonic axis. Can J Bot 67:2544–2551
Article
CAS
Google Scholar
Lea PJ, Ireland RJ (1999) Nitrogen Metabolism in Higher Plants. In: Singh B (ed) Plant amino acids: biochemistry and biotechnology. Marcel Dekker Inc, New York, pp 1–47
Google Scholar
Lelu-Walter M-A, Gautier F, Eliášová K et al (2018) High gellan gum concentration and secondary somatic embryogenesis: two key factors to improve somatic embryo development in Pseudotsuga menziesii [Mirb.]. Plant Cell Tiss Organ Cult 132:137–155. https://doi.org/10.1007/s11240-017-1318-0
Article
CAS
Google Scholar
Llebrés M-T, Avila C, Cánovas F, Klimaszewska K (2017) Root growth of somatic plants of hybrid Pinus strobus (L.). and P. wallichiana (A. B. Jacks.) is affected by the nitrogen composition of the somatic embryo germination medium. Trees. https://doi.org/10.1007/s00468-017-1635-2
Article
Google Scholar
Merkle S, Montello P, Xia X, Upchurch B, Smith D (2005) Light quality treatments enhance somatic seedling production in three southern pine species. Tree Physiol 26:187–194
Article
Google Scholar
Metcalfe RJ, Nault J, Hawkins BJ (2011) Adaptations to nitrogen form: comparing inorganic nitrogen and amino acid availability and uptake by four temperate forest plants. Can J Forest Res 41:1626–1637
Article
CAS
Google Scholar
Miller BD, Hawkins BJ (2007) Ammonium and nitrate uptake, nitrogen productivity and biomass allocation in interior spruce families with contrasting growth rates and mineral nutrient preconditioning. Tree Physiol 27:901–909
Article
CAS
PubMed
Google Scholar
Montalbán IA, De Diego N, Moncaleán P (2010) Bottlenecks in Pinus radiata somatic embryogenesis: improving maturation and germination. Trees 24:1061–1071
Article
Google Scholar
Morel A, Teyssier C, Trontin J-F et al (2014a) Early molecular events involved in Pinus pinaster Ait. somatic embryo development under reduced water availability: transcriptomic and proteomic analyses. Physiol Plant 152:184–201. https://doi.org/10.1111/ppl.12158
Article
CAS
PubMed
Google Scholar
Morel A, Trontin J-F, Corbineau F et al (2014b) Cotyledonary somatic embryos of Pinus pinaster Ait. most closely resemble fresh, maturing cotyledonary zygotic embryos: biological, carbohydrate and proteomic analyses. Planta 240:1075–1095. https://doi.org/10.1007/s0042
Article
CAS
PubMed
Google Scholar
Murashige T, Skoog F (1962) A Revised Medium for Rapid Growth and Bio Assays with Tobacco Tissue Cultures. Physiol Plantarum 15:473–497
Article
CAS
Google Scholar
Nunes-Nesi A, Fernie A, Stitt M (2010) Metabolic and Signaling Aspects Underpinning the Regulation of Plant Carbon Nitrogen Interactions. Mol Plant 3:973–996
Article
CAS
PubMed
Google Scholar
Ogita S, Sasamoto H, Yeung E, Thorpe T (2001) The effects of glutamine on the maintenance of embryogenic cultures of Cryptomeria japonica. Vitro Cell Dev Biol Plant 37:268–273
Article
CAS
Google Scholar
Öhlund J, Näsholm T (2001) Growth of conifer seedlings on organic and inorganic nitrogen sources. Tree Physiol 21:1319–1326
Article
PubMed
Google Scholar
Pinto A, Byrne D, Dethier Rogers S (1993) Influence of ovule perforation, plant growth regulators, and l-glutamine on in vitro growth of immature peach embryos. Vitro Cell Dev Biol Plant 29:55–58
Article
Google Scholar
Pratelli R, Pilot G (2014) Regulation of amino acid metabolic enzymes and transporters in plants. J Exp Bot 65(19):5535–5556
Article
CAS
PubMed
Google Scholar
Pullman G, Bucalo K (2014) Pine somatic embryogenesis: analyses of seed tissue and medium to improve protocol development. New Forest 45:353–377
Article
Google Scholar
Pullman G, Zeng X, Copeland-Kamp B, Crockett J, Lucrezi J, May S, Bucalo K (2015) Conifer somatic embryogenesis: improvements by supplementation of medium with oxidation–reduction agents. Tree Physiol 35:209–224. https://doi.org/10.1093/treephys/tpu117
Article
CAS
PubMed
Google Scholar
Robinson AR, Dauwe R, Ukrainetz NK, Cullis IF, White R, Mansfield SD (2009) Predicting the regenerative capacity of conifer somatic embryogenic cultures by metabolomics. Plant Biotechnol J 7:952–963. https://doi.org/10.1111/j.1467-7652.2009.00456.x
Article
CAS
PubMed
Google Scholar
Stasolla C, Belmonte M, Van Zyl L, Craig D, Liu W, Yeung E, Sederoff R (2004) The effect of reduced glutathione on morphology and gene expression of white spruce (Picea glauca) somatic embryos. J Exp Bot 55:695–709
Article
CAS
PubMed
Google Scholar
Stitt M (1999) Nitrate regulation of metabolism and growth. Curr Opin Plant Biol 2:178–186
Article
CAS
PubMed
Google Scholar
Stone S, Gifford D (1997) Structural and biochemical changes in loblolly pine (Pinus taeda L.) seeds during germination and early-seedling growth. i. storage protein reserves. Int J Plant Sci 158:727–737
Article
CAS
Google Scholar
Trontin J-F, Klimaszewska K, Morel A, Hargreaves C, Lelu-Walter M-A (2016) Molecular aspects of conifer zygotic and somatic embryo development: a review of genome-wide approaches and recent insights. In: Germanà MA, Lambardi M (eds) In vitro embryogenesis in higher plants. Humana Press, Hatfield, pp 167–208
Chapter
Google Scholar
Vasudevan A, Selvaraj N, Ganapathi A, Kasthurirengan S, Ramesh Anbazhagan V, Manickavasagam M (2004) Glutamine: a suitable nitrogen source for enhanced shoot multiplication in Cucumis sativus L. Biol Plantarum 48:125–128
Article
CAS
Google Scholar
Winkelmann T (2016) Somatic versus zygotic embryogenesis: learning from seeds. In: Germanà MA, Lambardi M (eds) In vitro embryogenesis in higher plants. Humana Press, Hatfield, pp 25–46
Chapter
Google Scholar
Yaseen M, Ahmad T, Sablok G, Standardi A, Ahmad Hafiz I (2012) Review: role of carbon sources for in vitro plant growth and development. Mol Biol Rep 40:2837–2849
Article
CAS
PubMed
Google Scholar
Zerihun A, McKenzie BA, Morton JD (1998) Photosynthate costs associated with the utilization of different nitrogen-forms: influence on the carbon balance of plants and shoot-root biomass partitioning. New Phytol 138:1–11
Article
CAS
Google Scholar