Effects of salinity on endogenous ABA, IAA, JA, AND SA in Iris hexagona.
Phytohormones play critical roles in regulating plant responses to stress. We investigated the effects of salinity on abscisic acid (ABA), indole-3-acetic acid (IAA), salicylic acid (SA), and jasmonic acid (JA) in leaves, stalks, fruits, and seeds of Iris hexagona, a native wetland species. Using gas chromatography-mass spectroscopy with selected ion monitoring, our experiments demonstrated significant and different short- and long-term changes in iris phytohormones. ABA and JA generally increased and IAA and SA declined in response to salinity. We conclude that these phytohormones may have separate and interactive effects on how plants respond and adapt to stress in natural environments.
Wang
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Biology Department, University of Louisiana at Lafayette Lafayette, Louisiana 70504-2451, USA.
Mopper
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Hasenstein
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D000040:Abscisic Acid / Q000096:biosynthesis*; D000222:Adaptation, Physiological; D003517:Cyclopentanes / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D007210:Indoleacetic Acids / Q000378:metabolism*; D007498:Iris / Q000254:growth & development / Q000378:metabolism*; D054883:Oxylipins; D018514:Plant Structures / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism; D020156:Salicylic Acid / Q000378:metabolism*; D012965:Sodium Chloride / Q000378:metabolism*; D013997:Time Factors; D014018:Tissue Distribution
D003517:Cyclopentanes; D007210:Indoleacetic Acids; D054883:Oxylipins; D012965:Sodium Chloride; C011006:jasmonic acid; C030737:indoleacetic acid; D000040:Abscisic Acid; D020156:Salicylic Acid