Proline improves copper tolerance in chickpea (Cicer arietinum).

Protoplasma
Vijeta SinghVinay Sharma

Abstract

The present study suggests the involvement of proline in copper tolerance of four genotypes of Cicer arietinum (chickpea). Based on the data of tolerance index and lipid peroxidation, the order for copper tolerance was as follows: RSG 888 > CSG 144 > CSG 104 > RSG 44 in the selected genotypes. The basis of differential copper tolerance in chickpea genotypes was characterized by analyzing, antioxidant enzymes (superoxide dismutase, ascorbated peroxidase and catalase), phytochelatins, copper uptake, and proline accumulation. Chickpea genotypes showed stimulated superoxide dismutase activity at all tested concentrations of copper, but H(2)O(2) decomposing enzymes especially; ascorbate peroxidase did not increase with 25 and 50 microM copper treatments. Catalase activity, however, increased at lower copper concentrations but failed to stimulate at 50 microM copper. Such divergence in responses of these enzymes minimizes their importance in protecting chickpea against copper stress. The sensitive genotypes showed greater enhancement of phytochelatins than that of tolerant genotypes. Hence, the possibility of phytochelatins in improving copper tolerance in the test plant is also excluded. Interestingly, the order of proline accumulat...Continue Reading

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Citations

Nov 5, 2014·Biological Reviews of the Cambridge Philosophical Society·Yosef FichmanLaszlo N Csonka
Jul 3, 2013·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Bharti GargManoj Prasad
Apr 8, 2021·Plant Physiology and Biochemistry : PPB·James T Carrillo, Dulal Borthakur

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