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Agricultural Proteomics Volume 2: Environmental Stresses by Ghasem Hosseini Salekdeh

By Ghasem Hosseini Salekdeh

This ebook will conceal a number of issues to problematic how proteomics may perhaps give a contribution in our realizing of mechanisms serious about pressure model. the information being accrued via a variety of proteomics applied sciences may possibly finally be used in breeding courses to augment pressure tolerance. This ebook provides finished reports approximately responses of crop and livestock to environmental stresses. demanding situations relating to rigidity phenotyping and integration of proteomics and different omics information have additionally been addressed.

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Extra info for Agricultural Proteomics Volume 2: Environmental Stresses

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Additionally, decreased levels of SOD, peroxidase and the above mentioned enzymes were observed in the roots of maize [134] and rice [135]. Proteomic analysis also revealed an enhanced level of HSPs in the roots of maize under anaerobic stress caused by flooding [136]. HSPs are small, novel set of proteins that represses the synthesis of the nonstress proteins. Furthermore, proteins with crucial roles in both cytoplasmic and organellar translation and mitochondrial elongation were found to be repressed by hypoxia which contribute to the reduction in protein synthesis during flooding stress [132].

Cold stress also elevates ROS, which trigger a series of harmful processes such as lipid peroxidation, degradation of proteins and DNA damage in the cell. To protect plants against them, enhanced accumulation of ROS-scavenging enzymes were observed during cold stress. Comparative proteomic analysis of coldacclimated and non-acclimated rice revealed increased levels of SOD, catalase (CAT), APX, and glutathione reductase (GR) in rice roots when exposed in low temperature [105]. High SOD activity has been associated with stress tolerance in plants because it neutralizes the reactivity of OÀ 2 , which is overproduced under stress [106].

The lack of P often limits plant growth because most inorganic P are present as phosphate esters or metal ion salts, which have very low solubilities [178]. Plants have evolved adaptive strategies to cope with inadequate P supply. These include the alteration of root morphology to enhance P usage, modifications in carbon metabolism by bypassing steps that require P, and increased secretion of acid phosphatase (APase), ribonuclease (RNase) and organic acids in the roots to increase P availability in the soil [178–181].

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