• Corpus ID: 31167619

A common bean (Phaseolus vulgaris) mutant with constitutively low cysteine desulfhydrase activity exhibits growth inhibition but uniquely shows tolerance to arsenate stress

  title={A common bean (Phaseolus vulgaris) mutant with constitutively low cysteine desulfhydrase activity exhibits growth inhibition but uniquely shows tolerance to arsenate stress},
  author={Dibyendu Talukdar},
A mutant designated as pvcys exhibiting huge deficiency in foliar L-cysteine desulfhydrase and D-cysteine desulfhydrase activity were isolated from an ethylmethane sulfonate-mutagenized M 2 population of a Phaseolus vulgaris L. genotype VL 63. The mutant showed growth inhibition and morpho-agronomic anomalies but exhibited high cysteine content and very low endogenous hydrogen sulfide concentration mainly due to crippling of cysteine degradation. Despite a normal glutathione and ascorbate redox… 

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