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Vol 52(2018) N 4 p. 489-496; DOI 10.1134/S002689331804012X Full Text

L.-H. Li , M.-M. Lv, X. Li , T.-Z. Ye, X. He, S.-H. Rong, Y.-L. Dong, Y. Guan , X.-L. Gao, J.-Q. Zhu, Z.-J. Xu*

The Rice OsDUF810 Family: OsDUF810.7 May be Involved in the Tolerance to Salt and Drought

Rice Institute of Sichuan Agricultural University, Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Chengdu, 611130 China

*mywildrice@aliyun.com
Received - 2017-05-25; Accepted - 2017-06-08

With the advance of sequencing technology, the number of sequenced plant genomes has been rapidly increasing. However, understanding of the gene function in these sequenced genomes lags far behind; as a result, many coding plant sequences in public databases are annotated as proteins with domains of unknown function (DUF). Function of a protein family DUF810 in rice is not known. In this study, we analysed seven members of OsDU810 (OsDUF810.1-OsDUF810.7) family with three distinct motifs in rice Nipponbare. By phylogenetic analysis, OsDUF810 proteins fall into three major groups (I, II, III). Expression patterns of the seven corresponding OsDUF810 protein-encoding genes in 15 different rice tissues vary. Under drought, salt, cold and heat stress conditions and ABA treatment, the expression of OsDUF810.7 significantly increases. Overexpression of this protein in E. coli lead to a significant enhancement of catalase (CAT) and peroxidase (POD) activities, and improved bacterial resistance to salt and drought.

rice, DUF, gene family, expression patterns, stress



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