Different Cucumber CsYUC Genes Regulate Response to Abiotic Stresses and Flower Development

Overview

Journal Sci Rep

Specialty Science

Date 2016 Feb 10

PMID 26857463

Citations 30

Authors

Shuangshuang Yan

Gen Che

Lian Ding

Zijing Chen

Xiaofeng Liu

Hongyin Wang

Wensheng Zhao

Kang Ning

Jianyu Zhao

Kiflom Tesfamichael

Qian Wang

Xiaolan Zhang

Affiliations

Soon will be listed here.

Abstract

The phytohormone auxin is essential for plant growth and development, and YUCCA (YUC) proteins catalyze a rate-limiting step for endogenous auxin biosynthesis. Despite YUC family genes have been isolated from several species, systematic expression analyses of YUCs in response to abiotic stress are lacking, and little is known about the function of YUC homologs in agricultural crops. Cucumber (Cucumis sativus L.) is a world cultivated vegetable crop with great economical and nutritional value. In this study, we isolated 10 YUC family genes (CsYUCs) from cucumber and explored their expression pattern under four types of stress treatments. Our data showed that CsYUC8 and CsYUC9 were specifically upregulated to elevate the auxin level under high temperature. CsYUC10b was dramatically increased but CsYUC4 was repressed in response to low temperature. CsYUC10a and CsYUC11 act against the upregulation of CsYUC10b under salinity stress, suggesting that distinct YUC members participate in different stress response, and may even antagonize each other to maintain the proper auxin levels in cucumber. Further, CsYUC11 was specifically expressed in the male flower in cucumber, and enhanced tolerance to salinity stress and regulated pedicel and stamen development through auxin biosynthesis in Arabidopsis.

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