Plant Hormones under Challenging Environmental Factors

Ahammed, Golam Jalal; Yu, Jiangnan

doi:10.1007/978-94-017-7758-2

Cited by 17 publications

(1 citation statement)

References 657 publications

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“…One worrying consequence of temperature rise is how it severely limits crop productivity. HS occurring during gametogenesis causes morphological abnormalities in pollen and ovary ultrastructure and viability, thus affecting fertilization efficiency; moreover, HS impacts the duration of grain filling, the availability of assimilates, and the enzymes of starch metabolism while also altering the abscisic acid/ethylene ratio [ 8 , 9 , 10 ]. Like other alterations in environmental conditions, such as cold, drought, flooding or nutrient deficiency, heat directly affects plant growth and modifies plant relations with pathogens, thus strongly impacting crop yield [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Redox Signaling in Plant Heat Stress Response

et al. 2023

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The increase in environmental temperature due to global warming is a critical threat to plant growth and productivity. Heat stress can cause impairment in several biochemical and physiological processes. Plants sense and respond to this adverse environmental condition by activating a plethora of defense systems. Among them, the heat stress response (HSR) involves an intricate network of heat shock factors (HSFs) and heat shock proteins (HSPs). However, a growing amount of evidence suggests that reactive oxygen species (ROS), besides potentially being responsible for cellular oxidative damage, can act as signal molecules in HSR, leading to adaptative responses. The role of ROS as toxic or signal molecules depends on the fine balance between their production and scavenging. Enzymatic and non-enzymatic antioxidants represent the first line of defense against oxidative damage and their activity is critical to maintaining an optimal redox environment. However, the HS-dependent ROS burst temporarily oxidizes the cellular environment, triggering redox-dependent signaling cascades. This review provides an overview of the redox-activated mechanisms that participate in the HSR.

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