Physiological, Biochemical, and Molecular Responses of the Plants Against Enhanced Ultraviolet B and Heavy Metal Stress

Jaiswal, Deepanshi; Pandey, Avantika; Agrawal, Shashi Bhushan

doi:10.1007/978-981-15-2156-0_17

Cited by 1 publication

(1 citation statement)

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“…Cadmium stress imposed to the chickpea plants induced enhanced H 2 O 2 production, although under stressful conditions H 2 O 2 is known to play a pivotal role in signaling 57 , 85 ; conversely, it is also deliberated to be the chief ROS molecule negatively affecting plant cells 11 . Cd stress causes lipid peroxidation and enhances MDA production, which in turn perturbs the fluidity and integrity of biological membranes 86 , 87 , besides these, H 2 O 2 also obstructs the Calvin cycle thereby causing perturbance in the rates of photosynthesis 85 . However, application of both JA and GA 3 reduced the levels of both H 2 O 2 and MDA in the Cd-stressed chickpea plants in the current investigation.…”

Section: Discussionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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Cadmium stress is one of the chief environmental cues that can substantially reduce plant growth. In the present research, we studied the effect of jasmonic acid (JA) and gibberellic acid (GA3) applied individually and/or in combination to chickpea (Cicer arietinum) plants exposed to 150 µM cadmium sulphate. Cadmium stress resulted in reduced plant growth and pigment contents. Moreover, chickpea plants under cadmium contamination displayed higher levels of electrolytic leakage, H2O2, and malonaldehyde, as well as lower relative water content. Plants primed with JA (1 nM) and those foliar-fed with GA3 (10–6 M) showed improved metal tolerance by reducing the accumulation of reactive oxygen species, malonaldehyde and electrolytic leakage, and increasing relative water content. . Osmoprotectants like proline and glycinebetaine increased under cadmium contamination. Additionally, the enzymatic activities and non-enzymatic antioxidant levels increased markedly under Cd stress, but application of JA as well as of GA3 further improved these attributes. Enzymes pertaining to the ascorbate glutathione and glyoxylase systems increased significantly when the chickpea plants were exposed to Cd. However, JA and GA3 applied singly or in combination showed improved enzymatic activities as well as nutrient uptake, whereas they reduced the metal accumulation in chickpea plants. Taken together, our findings demonstrated that JA and GA3 are suitable agents for regulating Cd stress resistance in chickpea plants.

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