NDLI: Ethylene and polyamine production patterns during in vitro shoot organogenesis of two passion fruit species as affected by polyamines and their inhibitor

Content Provider	Springer Nature Link
Author	Dias, Leonardo L. C. Santa Catarina, Claudete Ribeiro, Dimas M. Barros, Raimundo S. Floh, Eny I. S. Otoni, Wagner C.
Copyright Year	2009
Abstract	Levels of ethylene and polyamines (PAs) were measured during organogenesis of hypocotyl explants of two species of passion fruit (Passiflora cincinnata Masters and Passiflora edulis Sims f. flavicarpa Degener ‘FB-100’) to better understand the relationships of these regulators and their influence on cell differentiation and morphogenesis. Moreover, histological investigation of shoot ontogenesis was conducted to characterize the different events involved in cell redifferentiation and regulation of PA and ethylene levels. A delay was observed in morphogenic responses of P. edulis f. flavicarpa as compared to P. cincinnata, and these changes coincided with production of elevated levels of polyamine and ethylene levels. During differentiation, cells showed high rates of expansion and elongation, and high ethylene levels were associated with high PA levels, suggesting that the two biosynthesis pathways were highly regulated. Moreover, their interaction might be an important factor for determining cell differentiation. The addition of PAs to the culture medium did not promote organogenesis; however, the incorporation of the PA inhibitor methylglyoxal bisguanylhydrazone in the culture medium reduced shoot bud differentiation, suggesting the need to maintaining a minimum level of PAs for morphogenic events to take place.
Starting Page	199
Ending Page	208
Page Count	10
File Format	PDF
ISSN	01676857
Journal	Plant Cell, Tissue and Organ Culture (PCTOC)
Volume Number	99
Issue Number	2
e-ISSN	15735044
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ethylene Morphogenesis Passion fruit Polyamines Plant Pathology Plant Genetics & Genomics Plant Physiology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Horticulture

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