Effect of drought stress on expression of two important miRNAs in anther of two different wheat genotypes in term of drought stress

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Mehri Nasrin; FOTOVAT REZA; MOHSENIFARD EHSAN

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Journal: Cereal Research Year:2018 | Volume:8 | Issue:3 Page(s): 359-369

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Title

Effect of drought stress on expression of two important miRNAs in anther of two different wheat genotypes in term of drought stress

Author(s)

Mehri Nasrin | FOTOVAT REZA | MOHSENIFARD EHSAN | Issue Writer Certificate

Keywords

Gene expressionQ1

Male sterilityQ1

MeiosisQ2

Pollen viabilityQ1

Abstract

A large amount of the world lands under the cultivation of wheat is under drought stress. In cereals, the reproductive stage is the most sensitive phase to drought stress. Despite the importance of drought stress in reproductive stage and its role in wheat yield reduction, the mechanisms involved in it have been less studied. In the present study, the expression of miR166 and miR167 in mature anthers of two tolerant (Dezfoul or D-10) and susceptible (Shiraz) wheat genotypes under drought conditions in reproductive stage was investigated. Stress tolerance index (STI) for grain number per spike, grain set and Pollen viability was higher in tolerant genotype, Dezfoul, compared to susceptible genotype, Shiraz. Drought stress induced expression level of both miRNAs in both genotypes. The amount of miR166 increase in the susceptible genotype, Shiraz (over 14 times compared to the non-stress conditions) was about twice more than the tolerant genotype, Dezfoul (about 8 times more than the non-stress conditions). Under drought stress conditions, expression of miR167 in Dezfoul genotype was more than two fold and in Shiraz genotype more than four times higher than the non-stress conditions. Both miR166 and miR167 regulate development of floral organs such as microspore development. In conclusion, the effect of drought stress on their expression changes can affect Male sterility in wheat, and modifying the expression of these two miRNAs can lead to efficiency of pollen development and successful anther dehiscence which is rooted in signal transduction.

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APA: Copy

Mehri, Nasrin, FOTOVAT, REZA, & MOHSENIFARD, EHSAN. (2018). Effect of drought stress on expression of two important miRNAs in anther of two different wheat genotypes in term of drought stress. CEREAL RESEARCH, 8(3 ), 359-369. SID. https://sid.ir/paper/364912/en

Vancouver: Copy

Mehri Nasrin, FOTOVAT REZA, MOHSENIFARD EHSAN. Effect of drought stress on expression of two important miRNAs in anther of two different wheat genotypes in term of drought stress. CEREAL RESEARCH[Internet]. 2018;8(3 ):359-369. Available from: https://sid.ir/paper/364912/en

IEEE: Copy

Nasrin Mehri, REZA FOTOVAT, and EHSAN MOHSENIFARD, “Effect of drought stress on expression of two important miRNAs in anther of two different wheat genotypes in term of drought stress,” CEREAL RESEARCH, vol. 8, no. 3 , pp. 359–369, 2018, [Online]. Available: https://sid.ir/paper/364912/en

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