TITLE:
Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity
AUTHORS:
Analía Llanes, Andrea Andrade, Sergio Alemano, Virginia Luna
KEYWORDS:
Drought, Plant Growth Responses, Phytohormones, Salinity
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.7 No.9,
July
18,
2016
ABSTRACT: The phytohormones are pivotal chemical messengers produced within the
plant that regulate its growth and development, and responses to environmental
stimuli. Drought and salinity are adverse environmental factors that disturb
the plant hormonal balance. Accordingly, these hormonal fluctuations modify the
cellular dynamic and hence they play a central role in regulating plant growth
responses to abiotic stresses such as drought and salinity. The present review
gives an update about the alterations of endogenous phytohormones such as
abscisic acid (ABA), auxins (Aux), cytokinins (CKs), ethylene (ET),
gibberellins (GAs), jasmonates (JAs), salicylic acid (SA), brassinosteroids
(BRs), strigolactones (SLs) and nitric oxide (NO) that occur as part of the
adaptative responses of plant against drought and salt stresses. Better
understanding of the endogenous hormonal changes during the plant response to
both abiotic stresses will contribute, in part, to the development of
stress-tolerant plants.