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Molybdenum Sulfide Induce Growth Enhancement Effect of Rice (Oryza sativa L.) through Regulating the Synthesis of Chlorophyll and the Expression of Aquaporin Gene

Li, Yadong, Jin, Qian, Yang, Desong, Cui, Jianghu
Journal of agricultural and food chemistry 2018 v.66 no.16 pp. 4013-4021
Oryza sativa, abiotic stress, antioxidants, aquaporins, biomass, cell division, chlorophyll, enzyme activity, genes, germination, lipid peroxidation, malondialdehyde, molybdenum, molybdenum disulfide, nitrogen, photosynthesis, rice, roots, seeds, shoots
Molybdenum sulfide (MoS₂) has been applied widely in industrial and environmental application, leading to increasing release into environment. So far, no studies have been investigated with regard to the potential effect of MoS₂ on plants. Herein, we studied the impact of MoS₂ on the growth, chlorophyll content, lipid peroxidation, antioxidase system, and aquaporins of rice for the first time. Results showed that MoS₂ did not significantly affect the germination of rice seeds, malonaldehyde (MDA) content, and the antioxidant enzyme activity. While the length and biomass of rice root and shoot, chlorophyll content index (CCI), and expression of aquaporin genes were significantly increased. Based on these results, we concluded that MoS₂ promoted rice growth through (i) the promotion of nitrogen source assimilation, (ii) the enhancement of photosynthesis, enzymatic-related biochemical reactions, and metabolic processes, subsequently, (iii) the acceleration of cell division and expansion, furthermore (iv) no abiotic stress and favorable condition of antioxidant enzyme system. These results provided an important insight into the further application of MoS₂ on agriculture and environment.