Differential Expression Profiles of Tomato miRNAs Induced by Tobacco Mosaic Virus

Authors
A. Abdelkhalek 1
N. Sanan-Mishra 2
1 Plant Protection and Bimolecular Diagnosis Department, ALCRI, City of Scientific Research and Technological Applications, 21934, Alexandria, Egypt.
2 Plant RNAi Biology Group, International Center for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India.
Abstract
Plant microRNAs (miRNAs) play important roles in plant development and responses to biotic and abiotic stress. Recently, there is clear evidence that miRNAs are involved in host-virus interactions. By using stem-loop RT-PCR, an expression levels change of thirteen miRNA belonging to six miRNA families targeting leaf development and morphogenesis were analyzed upon Tobacco Mosaic Virus (TMV)-tomato infection. Compared to mock plants, significant changes in relative expression levels of nine miRNAs were observed. The miR319c-5p showed the highest statistically significant increase in accumulation at 15 days post-inoculation. At all time points tested, miR159, miR164a-3p, miR164a-5p, miR166c-5p and miR319c-5p were up-regulated while miR160, miR319a, miR319b, miR319c-3p were down-regulated in most cases. Our data could provide new insights into the role of miRNAs in tomato-TMV interaction and in developing efficient strategies for improving tomato resistance against viral infection.

Keywords

Subjects

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Journal of Agricultural Science and Technology
Volume 21, Issue 2
March and April 2019
Pages 475-485