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Exogenous hydrogen sulfide alleviates chromium toxicity by modulating chromium, nutrients and reactive oxygen species accumulation, and antioxidant defence system in mungbean (Vigna radiata L.) seedlings

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Title Exogenous hydrogen sulfide alleviates chromium toxicity by modulating chromium, nutrients and reactive oxygen species accumulation, and antioxidant defence system in mungbean (Vigna radiata L.) seedlings
Not Available
 
Creator Deepti Singh
Nathi Lal Sharma
Dharmendra Singh
Manzer H. Siddiqui c
Jyoti Taunk
Susheel Kumar Sarkar
Abhishek Rathore
Chandan Kumar Singh
Abdullah A. Al-amri
Saleh Alansi
Hayssam M. Ali
Md Atikur Rahman
 
Subject Chromium
Hydrogen sulfide
H+-ATPase
Ions uptake
Mungbean
Reactive oxygen species
 
Description Not Available
Chromium (Cr), a highly toxic redox-active metal cation in soil, seriously threatens global agriculture by affecting nutrient uptake and disturbing various physio-biochemical processes in plants, thereby reducing yields. Here, we examined the effects of different concentrations of Cr alone and in combination with hydrogen sulfide (H2S) application on the growth and physio-biochemical performance of two mungbeans (Vigna radiata L.) varieties, viz. Pusa Vishal (PV; Cr tolerant) and Pusa Ratna (PR; Cr sensitive), growing in a pot in hydroponics. Plants were grown in the pot experiment to examine their growth, enzymatic and non-enzymatic antioxidant levels, electrolyte balance, and plasma membrane (PM) H+-ATPase activity. Furthermore, root anatomy and cell death were analysed 15 days after sowing both varieties in hydroponic systems. The Cr-induced accumulation of reactive oxygen species caused cell death and affected the root anatomy and growth of both varieties. However, the extent of alteration in anatomical features was less in PV than in PR. Exogenous application of H2S promoted plant growth, thereby improving plant antioxidant activities and reducing cell death by suppressing Cr accumulation and translocation. Seedlings of both cultivars treated with H2S exhibited enhanced photosynthesis, ion uptake, glutathione, and proline levels and reduced oxidative stress. Interestingly, H2S restricted the translocation of Cr to aerial parts of plants by improving the nutrient profile and viability of root cells, thereby relieving plants from oxidative bursts by activating the antioxidant machinery through triggering the ascorbate-glutathione cycle. Overall, H2S application improved the nutrient profile and ionic homeostasis of Cr-stressed mungbean plants. These results highlight the importance of H2S application in protecting crops against Cr toxicity. Our findings can be utilised to develop management strategies to improve heavy metal tolerance among crops.
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Date 2023-06-20T04:35:04Z
2023-06-20T04:35:04Z
2023-05-16
 
Type Research Paper
 
Identifier Deepti Singh, Nathi Lal Sharma, Dharmendra Singh, Manzer H. Siddiqui, Jyoti Taunk, Susheel Kumar Sarkar, Abhishek Rathore, Chandan Kumar Singh, Abdullah A. Al-amri, Saleh Alansi, Hayssam M. Ali, Md Atikur Rahman, Exogenous hydrogen sulfide alleviates chromium toxicity by modulating chromium, nutrients and reactive oxygen species accumulation, and antioxidant defence system in mungbean (Vigna radiata L.) seedlings, Plant Physiology and Biochemistry, Volume 200, 2023, 107767
0981-9428
http://krishi.icar.gov.in/jspui/handle/123456789/78435
 
Language English
 
Relation Not Available;
 
Publisher Elsevier