Signalling cross-talk between nitric oxide and active oxygen in Trifolium repens L. plants responses to cadmium stress.
In: Environmental Pollution, Jg. 239 (2018-08-01), S. 53-68
academicJournal
Zugriff:
The significant influence of • NO on the stress response is well established; however, the precise metabolic pathways of • NO and RNS under metal stresses remain unclear. Here, the key components of ROS and RNS metabolism under Cd stress were investigated with multi-level approaches using high-quality forage white clover ( Trifolium repens L.) plants. For the studied plants, Cd disturbed the redox homeostasis, affected the absorption of minerals, and exacerbated the degree of lipid peroxidation, thus triggering oxidative stress. However, • NO was also involved in regulating mineral absorption, ROS-scavenger levels and mRNA expression in Cd-treated white clover plants. In addition, GSNOR activity was up-regulated by Cd with the simultaneous depletion of • NO generation and GSNO but was counteracted by the • NO donor sodium nitroprusside. Response to Cd-stressed SNOs was involved in generating ONOO − and NO 2 -Tyr in accordance with the regulation of • NO-mediated post-translational modifications in the ASC-GSH cycle, selected amino acids and NADPH-generating dehydrogenases, thereby provoking nitrosative stress. Taken together, our data provide comprehensive metabolite evidence that clearly confirms the relationships between ROS and RNS in Cd-stressed plants, supporting their regulatory roles in response to nitro-oxidative stress and providing an in-depth understanding of the interaction between two families subjected to metal stresses. [ABSTRACT FROM AUTHOR]
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Signalling cross-talk between nitric oxide and active oxygen in Trifolium repens L. plants responses to cadmium stress.
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Autor/in / Beteiligte Person: | Liu, Shiliang ; Yang, Rongjie ; Tripathi, Durgesh Kumar ; Li, Xi ; Jiang, Mingyan ; Lv, Bingyang ; Ma, Mingdong ; Chen, Qibing |
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Zeitschrift: | Environmental Pollution, Jg. 239 (2018-08-01), S. 53-68 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 0269-7491 (print) |
DOI: | 10.1016/j.envpol.2018.03.106 |
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