NDLI: Induction of capsaicinoid accumulation in placental tissues of Capsicum chinense Jacq. requires primary ammonia assimilation

Content Provider	Springer Nature Link
Author	Ancona Escalante, Wendy del R. Baas Espila, Fray M. Castro Concha, Lizbeth A. Vázquez Flota, Felipe A. Zamudio Maya, Marcela Miranda Ham, María L.
Copyright Year	2012
Abstract	The activities of primary ammonia assimilation enzymes were analyzed in isolated placentas of habanero peppers (Capsicum chinense Jacq.). The placentas were cultured in vitro and exposed to conditions promoting capsaicinoid accumulation, such as treatments with salicylic acid (SA) and methyl jasmonate (MeJa). Although exposure to both inducers resulted in increased accumulation of capsaicinoids, the induction by SA was more pronounced. Glutamine synthetase (GS) activity, which incorporates ammonia into glutamine, increased more than six fold under such conditions, suggesting GS participation in fulfilling the demand for amino acids required to support the increase in capsaicinoid synthesis. Glutamate dehydrogenase (GDH), which has been involved in nitrogen assimilation in non-photosynthetic tissues such as placentas, was apparently not involved; its activity decreased in tissues exposed to the inducers. Thus, under the conditions tested, the activation of secondary metabolism required activation of basal nitrogen metabolism.
Starting Page	565
Ending Page	570
Page Count	6
File Format	PDF
ISSN	01676857
Journal	Plant Cell, Tissue and Organ Culture (PCTOC)
Volume Number	113
Issue Number	3
e-ISSN	15735044
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solanaceae Pepper Elicitors Salicylic acid Methyl jasmonate Plant Sciences Plant Physiology Plant Genetics & Genomics Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Horticulture

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Induction of capsaicinoid synthesis in Capsicum chinense cell cultures by salicylic acid or methyl jasmonate

Induction of capsaicinoid synthesis in Capsicum chinense cell cultures by salicylic acid or methyl jasmonate

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Induction of capsaicinoid accumulation in placental tissues of Capsicum chinense Jacq. requires primary ammonia assimilation

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