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Chromium Stress Induced Oxidative Burst in Vigna mungo (L.) Hepper: Physio-molecular and Antioxidative Enzymes Regulation in Cellular Homeostasis
  • Ayushee Rath,
  • Anath Bandhu Das
Ayushee Rath
Utkal University
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Anath Bandhu Das
Utkal University
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Abstract

Blackgram [Vigna mungo (L.) Hepper] is an important legume crop with good quality dietary proteins and vitamins. Low production of blackgram in the chromium rich soil of Odisha is a serious concern against its demand. Chromium (VI) was tested on V. mungo var. B3-8-8 at 100, 150, 200, 250 and 300 µM concentration on growth, anti-oxidative enzymes and chromium content at 15, 30 and 45 d of treatments. Seed germination and growth decreased with increase dose and duration. Cr uptake induced oxidative burst with significant increase of osmolytes in cell level to a greater amount in lower doses but failed to adjust homeostasis at higher dose. Increase of GPX and SOD and decrease of CAT contain was found in dose dependent manner. Increased protein content was observed in <200 µM Cr concentration whereas, significant decrease of protein was noted thereafter. Down regulation of proteins (29.2 kDa and 32.6 kDa) was observed at >250 µM of Cr. Total Cr uptake was greater in root than in shoot which might be due to poor translocation of heavy metal or detoxification. Thus, blackgram able to maintain homeostasis at lower concentrations of Cr by activating the cascade of enzymes following cellular detoxification mechanism.

Peer review status:Published

16 Feb 2021Published in Physiology and Molecular Biology of Plants. 10.1007/s12298-021-00941-3