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Published on: March 30, 2018
Different cucumber CsYUC genes regulate response to abiotic stresses and flower development
Shuangshuang Yan1, Gen Che1, Lian Ding1
1Department of Vegetable Sciences, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing 100193, China.
Cucumber YUCCA (YUC) genes play crucial roles in plant development and stress responses. This study reveals specific CsYUC genes are involved in temperature and salinity stress, highlighting their importance in maintaining auxin homeostasis and crop resilience.
Area of Science:
- Plant Molecular Biology
- Plant Physiology
- Agricultural Science
Background:
- The phytohormone auxin is vital for plant growth and development.
- YUCCA (YUC) proteins are key enzymes in auxin biosynthesis.
- Limited knowledge exists on YUC gene function and expression under abiotic stress in crops.
Purpose of the Study:
- To isolate and characterize YUC family genes in cucumber (Cucumis sativus L.).
- To investigate the expression patterns of cucumber YUC genes under various abiotic stresses.
- To elucidate the role of specific CsYUC genes in stress tolerance and plant development.
Main Methods:
- Isolation of 10 YUC family genes (CsYUCs) from cucumber.
- Analysis of CsYUC gene expression under high temperature, low temperature, and salinity stress.
- Functional analysis of CsYUC11 in Arabidopsis under salinity stress.
Main Results:
- CsYUC8 and CsYUC9 were upregulated under high temperature, increasing auxin levels.
- CsYUC10b expression increased, while CsYUC4 decreased under low temperature.
- CsYUC10a and CsYUC11 expression countered CsYUC10b upregulation under salinity stress.
- CsYUC11 expression in male flowers enhanced salinity tolerance and regulated stamen development in Arabidopsis.
Conclusions:
- Distinct CsYUC genes respond differently to various abiotic stresses.
- CsYUC genes may antagonize each other to maintain optimal auxin levels in cucumber.
- CsYUC11 plays a significant role in salinity stress response and floral development via auxin biosynthesis.
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