Characterization of miRNAs and their target genes in He-Ne laser pretreated wheat seedlings exposed to drought stress

Ecotoxicology and Environmental Safety
ZongBo QiuLi Wang

Abstract

Drought stress is considered a critical environmental factor that negatively affects wheat growth and development, which causes considerable losses in wheat yields worldwide. More recently, numerous microRNAs (miRNAs) have been found to be involved in wheat responses to drought stresses. However, there is little information regarding the effects of He-Ne laser irradiation on the expression traits of miRNAs and their targets in wheat seedlings exposed to drought stress. In the current study, therefore, a combination of physiological and molecular approaches was used to assess the effect of He-Ne laser irradiation on the expression of miRNAs and their targets in wheat seedlings exposed to drought stress. Our results demonstrated that drought stress significantly reduced plant height, root length, shoot and root fresh weight, relative water content, the expression level and activity of superoxide dismutase (SOD), enhanced malondialdehyde (MDA) concentration in the wheat seedlings. However, He-Ne laser irradiation significantly enhanced the activities of SOD, ascorbate peroxidase (APX), peroxidase (POD) and relative water content, and reduced MDA concentration of seedlings by regulating gene expression for SOD, POD, APX. In additio...Continue Reading

Citations

Apr 8, 2020·Experimental and Therapeutic Medicine·Huanxin ZhangJixian Zhao
Oct 23, 2019·Frontiers in Plant Science·Moumita Roy Chowdhury, Jolly Basak

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