Abiotic stress: Interplay between ROS, hormones and MAPKs
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...because of their highly reactive nature [7]....
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...In the cell wall, POX, amine oxidases, and LOX activity are the potential source for ROS in the cell wall [7,58]....
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...However, during stress conditions, overgeneration of ROS demolishes the equilibrium and causes cellular damage, leading to programmed cell death (PCD) as well as decreasing plant productivity [7]....
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...Stressed-plants become prone to growth reduction by differential cell wall growth, where ROS, along with peroxidase, triggers polymerization of glycoproteins and phenolic compounds to make cell walls rigid [24,38,39]....
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...The chloroplast is one of the leading ROS production sites in plants [23,24], where ROS generation, directly and indirectly, depends on the interaction of chlorophyll (chl) and light....
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...2–2% of electrons transferred interact with O2 to produce ROS, and hence, apparently 1–2% of O2 becomes partially reduced [23,24,34]....
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...differential cell wall growth, where ROS, along with peroxidase, triggers polymerization of glycoproteins and phenolic compounds to make cell walls rigid [24,38,39]....
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...These cell wall-associated peroxidases catalyze H2O2 generation in the presence of NADH, where the NADH is solely provided from malate dehydrogenase [24]....
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References
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