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Biochemical and molecular changes induced by salinity stress in Oryza sativa L.

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Abstract

Salinity stress constrains the growth, development, and yield in crops. Rice is an important cereal crop highly affected by salinity. To ensure the agriculture production in salt-affected soils, it is enormously entail to understand the salt adaptation strategies of plants. Salinity directly affects the morphology, physiology, and metabolism of the plants. The current study was carried out to check the influence of different concentrations of sodium chloride on rice cultivar. Higher concentration of the NaCl showed significant reduction in the growth, pigment system, and metabolites in rice cultivars. Salinity also elicited the antioxidant enzymes (CAT, SOD, and POX) response and gene expression. Cell biological studies showed the H2O2 production and nuclear fragmentation due to alleviated salinity stress. To delineate the portrayal of antioxidant proteins and autophagy mechanism in salinity stress, the homologs of rice CAT1, Mn-SOD, GPX, ATG1, and ATG6 genes were retrieved from blast search. The real-time PCR analysis showed differential expression of genes and depicts new molecular insight of target genes to understand the salinity stress and autophagy-mediated stress signaling pathways.

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Acknowledgments

The authors are thankful to B.S. Abdur Rahman University, Chennai for providing the facilities and Junior Research Fellowship to (M. S. Khan) to carry out the research project.

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  1. School of Life Sciences, B. S. Abdur Rahman University, Vandalur, Chennai, Tamil Nadu, 600048, India

    M. S. Khan & S. Hemalatha

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  1. M. S. Khan
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Correspondence to S. Hemalatha.

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Khan, M.S., Hemalatha, S. Biochemical and molecular changes induced by salinity stress in Oryza sativa L.. Acta Physiol Plant 38, 167 (2016). https://doi.org/10.1007/s11738-016-2185-8

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