Abstract
Key message
Tetraploidy improves overexpression of h6h and scopolamine production of H. muticus, while in H. senecionis, pmt overexpression and elicitation can be used as effective methods for increasing tropane alkaloids.
Abstract
The effects of metabolic engineering in a polyploid context were studied by overexpression of h6h in the tetraploid hairy root cultures of H. muticus. Flow cytometry analysis indicated genetic stability in the majority of the clones, while only a few clones showed genetic instability. Among all the diploid and tetraploid clones, the highest level of h6h transgene expression and scopolamine accumulation was interestingly observed in the tetraploid clones of H. muticus. Therefore, metabolic engineering of the tropane biosynthetic pathway in polyploids is suggested as a potential system for increasing the production of tropane alkaloids. Transgenic hairy root cultures of Hyoscyamus senecionis were also established. While overexpression of pmt in H. senecionis was correlated with a sharp increase in hyoscyamine production, the h6h-overexpressing clones were not able to accumulate higher levels of scopolamine than the leaves of intact plants. Applying methyl jasmonate was followed by a sharp increase in the expression of pmt and a drop in the expression of tropinone reductase II (trII) which consequently resulted in the higher biosynthesis of hyoscyamine and total alkaloids in H. senecionis.
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Abbreviations
- BSTFA:
-
N,O-Bis (trimethylsilyl)trifluoroacetamide
- GC:
-
Gas chromatography
- GC–MS:
-
Gas chromatography–mass spectrometry
- MeJa:
-
Methyl jasmonate
- MS:
-
Murashige and Skoog
- PMT:
-
Putrescine N-methyltransferase
- TMCS:
-
Trimethylchlorosilane
- TRI:
-
Tropinone reductase I
- TRII:
-
Tropinone reductase II
- TA:
-
Tropane alkaloids
References
Arroo R, Woolley J, Oksman-Caldentey K-M (2007) Henbane, Belladonna, Datura and Duboisia. In: Pua E, Davey M (eds) Biotechnology in agriculture and forestry, Transgenic Crops VI, vol 61. Springer, Berlin, pp 189–204
Biondi S, Fornale S, Oksman-Caldentey KM, Eeva M, Agostani S, Bagni N (2000) Jasmonates induce over-accumulation of methylputrescine and conjugated polyamines in Hyoscyamus muticus L. root cultures. Plant Cell Rep 19:691–697
Cardillo AB, Otalvaro AAM, Busto VD, Talou JR, Velasquez LME, Giulietti AM (2010) Scopolamine, anisodamine and hyoscyamine production by Brugmansia candida hairy root cultures in bioreactors. Process Biochem 45:1577–1581
Dehghan E, Häkkinen S, Oksman-Caldentey K-M, Shahriari Ahmadi F (2012) Production of tropane alkaloids in diploid and tetraploid plants and in vitro hairy root cultures of Egyptian henbane (Hyoscyamus muticus L.). Plant Cell Tissue Organ Cult 110:35–44
Dehghan E, Shahriari Ahmadi F, Ghotbi Ravandi E, Reed DW, Covello PS, Bahrami AR (2013) An atypical pattern of accumulation of scopolamine and other tropane alkaloids and expression of alkaloid pathway genes in Hyoscyamus senecionis. Plant Physiol Biochem 70:188–194
Hashimoto T, Yun D, Yamada Y (1993) Production of tropane alkaloids in genetically engineered root cultures. Phytochemistry 32:713–718
Jouhikainen K, Lindgren L, Jokelainen T, Hiltunen R, Teeri TH, Oksman-Caldentey K-M (1999) Enhancement of scopolamine production in Hyoscyamus muticus L. hairy root cultures by genetic engineering. Planta 208:545–551
Kai G et al (2007) Molecular cloning and characterization of a new cDNA encoding hyoscyamine 6-beta-hydroxylase from roots of Anisodus acutangulus. J Biochem Mol Biol 40:715–722
Kai G, Yang S, Zhang Y, Luo X, Fu X, Zhang A, Xiao J (2012) Effects of different elicitors on yield of tropane alkaloids in hairy roots of Anisodus acutangulus. Mol Biol Rep 39:1721–1729
Kang SM, Jung HY, Kang YM, Yun DJ, Bahk JD, Yang JK, Choi MS (2004) Effects of methyl jasmonate and salicylic acid on the production of tropane alkaloids and the expression of PMT and H6H in adventitious root cultures of Scopolia parviflora. Plant Sci 166:745–751
Khatamsaz M (1998) Flora of Iran, vol 24. Research Institute of Forests and Rangelands, Iran
Kushwaha AK, Sangwan NS, Trivedi PK, Negi AS, Misra L, Sangwan RS (2013) Tropine forming tropinone reductase gene from Withania somnifera (Ashwagandha): biochemical characteristics of the recombinant enzyme and novel physiological overtones of tissue-wide gene expression patterns. PLoS One 8:e74777
Li R, Reed DW, Liu EW, Nowak J, Pelcher LE, Page JE, Covello PS (2006) Functional genomic analysis of alkaloid biosynthesis in Hyoscyamus niger reveals a cytochrome P450 involved in littorine rearrangement. Chem Biol 13:513–520
Mateus L, Cherkaoui S, Christen P, Oksman-Caldentey KM (2000) Simultaneous determination of scopolamine, hyoscyamine and littorine in plants and different hairy root clones of Hyoscyamus muticus by micellar electrokinetic chromatography. Phytochemistry 54:517–523
Moyano E, Fornalé S, Palazón J, Cusidó RM, Bagni N, Piñol MT (2002) Alkaloid production in Duboisia hybrid hairy root cultures overexpressing the pmt gene. Phytochemistry 59:697–702
Moyano E, Jouhikainen K, Tammela P, Palazon J, Cusido RM, Piñol MT, Teeri TH, Oksman-Caldentey K-M (2003) Effect of pmt gene overexpression on tropane alkaloid production in transformed root cultures of Datura metel and Hyoscyamus muticus. J Exp Bot 54:203–211
Murashige T, Skoog F (1962) A revised medium for rapid growth and bio assays with tobacco tissue cultures. Physiol Plant 15:473–497
Ochatt S, Jacas L, Patat-Ochatt EM, Djenanne S (2013) Flow cytometric analysis and molecular characterization of Agrobacterium tumefaciens-mediated transformants of Medicago truncatula. Plant Cell Tissue Organ Cult 113:237–244
Oksman-Caldentey K-M, Arroo R (2000) Regulation of tropane alkaloid metabolism in plants and plant cell cultures. In: Verpoorte R, Alfermann A (eds) Metabolic engineering of plant secondary metabolism. Kluwer, Dortrecht, pp 253–281
Oksman-Caldentey K-M, Vuorela H, Isenegger M, Strauss A, Hiltunen R (1987) Selection for high tropane alkaloid content in Hyoscyamus muticus plants. Plant Breed 99:318–326
Palazón J, Moyano E, Cusidó RM, Bonfill M, Oksman-Caldentey KM, Piñol MT (2003) Alkaloid production in Duboisia hybrid hairy roots and plants overexpressing the h6h gene. Plant Sci 165:1289–1295
Portsteffen A, Dräger B, Nahrstedt A (1994) The reduction of tropinone in Datura stramonium root cultures by two specific reductases. Phytochemistry 37:391–400
Rischer H, Häkkinen ST, Ritala A, Seppänen-Laakso T, Miralpeix B, Capell T, Christou P, Oksman- Caldentey K-M (2013) Plant cells as pharmaceutical factories. Curr Pharm Design 19:5640–5660
Saghai-Maroof MA, Soliman K, Gorgensen RA, Allard RW (1984) DNA spacer length polymorphism in Barley: Mendelian inheritance, chromosomal location and population genetics. Proc Natl Acad Sci USA 81:8014–8018
Sato F, Hashimoto T, Haciya A, Tamura K, Choi K-B, Morishige T, Fujimoto H, Yamada Y (2001) Metabolic engineering of plant alkaloid biosynthesis. Proc Natl Acad Sci USA 98:367–372
Sevon N, Oksman-Caldentey K-M (2002) Agrobacterium rhizogenes mediated transformation: root cultures as a source of alkaloids. Planta Med 68(10):859–868
Wang X, Chen M, Yang C, Liu X, Zhang L, Lan X, Tang K, Liao Z (2011) Enhancing the scopolamine production in transgenic plants of Atropa belladonna by overexpressing pmt and h6h genes. Physiol Plant 143:309–315
Yamada Y, Hashimoto T, Endo T (1990) Biochemistry of alkaloid production in vitro. In: Charlwood B, Rhodes MJC (eds) Secondary products from plant tissue culture. Clarendon Press, Oxford, pp 201–225
Zárate R, Jaber-Vazdekis N, Medina B, Ravelo Á (2006) Tailoring tropane alkaloid accumulation in transgenic hairy roots of Atropa baetica by over-expressing the gene encoding hyoscyamine 6β-hydroxylase. Biotechnol Lett 28:1271–1277
Zhang L et al (2004) Engineering tropane biosynthetic pathway in Hyoscyamus niger hairy root cultures. Proc Natl Acad Sci USA 101:6786–6791
Zhang L, Yang B, Lu B, Kai G, Wang Z, Xia Y, Ding R, Zhang H, Sun X, Chen W, Tang K (2007) Tropane alkaloids production in transgenic Hyoscyamus niger hairy root cultures over-expressing putrescine N-methyltransferase is methyl jasmonate-dependent. Planta 225:887–896
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This research was financially supported by the Deputy of Research Affairs, Ferdowsi University of Mashhad, Iran.
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Communicated by Maike Petersen.
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Dehghan, E., Reed, D.W., Covello, P.S. et al. Genetically engineered hairy root cultures of Hyoscyamus senecionis and H. muticus: ploidy as a promising parameter in the metabolic engineering of tropane alkaloids. Plant Cell Rep 36, 1615–1626 (2017). https://doi.org/10.1007/s00299-017-2178-0
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DOI: https://doi.org/10.1007/s00299-017-2178-0