Physiological impacts of ABA–JA interactions under water-limitation

Physiological impacts of ABA–JA interactions under water-limitation Plant responses to drought stress depend on highly regulated signal transduction pathways with multiple interactions. This complex crosstalk can lead to a physiological outcome of drought avoidance or tolerance/resistance. ABA is the principal mediator of these responses due to the regulation of stomatal closure that determines plant growth and survival, but also other strategies of drought resistance such as osmotic adjustment. However, other hormones such as JA seem responsible for regulating a subset of plant responses to drought by regulating ABA biosynthesis and accumulation and ABA-dependent signalling, but also by ABA independent pathways. Here, we review recent reports of ABA–JA hormonal and molecular interactions within a physiological framework of drought tolerance. Understanding the physiological significance of this complex regulation offers opportunities to find strategies of drought tolerance that avoid unwanted side effects that limit growth and yield, and may allow biotechnological crop improvement. Plant Molecular Biology Springer Journals

Physiological impacts of ABA–JA interactions under water-limitation

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Springer Netherlands
Copyright © 2016 by The Author(s)
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
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