Comprehensive Analysis and Functional Studies of WRKY Transcription Factors in Nelumbo nucifera

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http://hdl.handle.net/10138/305969

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Li, J.; Xiong, Y.; Li, Y.; Ye, S.; Yin, Q.; Gao, S.; Yang, D.; Yang, M.; Palva, E.T.; Deng, X. Comprehensive Analysis and Functional Studies of WRKY Transcription Factors in Nelumbo nucifera. Int. J. Mol. Sci. 2019, 20, 5006.

Titel: Comprehensive Analysis and Functional Studies of WRKY Transcription Factors in Nelumbo nucifera
Författare: Li, Jing; Xiong, Yacen; Li, Yi; Ye, Shiqi; Yin, Qi; Gao, Siqi; Yang, Dong; Yang, Mei; Palva, E. Tapio; Deng, Xianbao
Utgivare: Multidisciplinary Digital Publishing Institute
Datum: 2019-10-10
Permanenta länken (URI): http://hdl.handle.net/10138/305969
Abstrakt: The WRKY family is one of the largest transcription factor (TF) families in plants and plays central roles in modulating plant stress responses and developmental processes, as well as secondary metabolic regulations. Lotus (<i>Nelumbo nucifera</i>) is an aquatic crop that has significant food, ornamental and pharmacological values. Here, we performed an overview analysis of WRKY TF family members in lotus, and studied their functions in environmental adaptation and regulation of lotus benzylisoquinoline alkaloid (BIA) biosynthesis. A total of 65 <i>WRKY</i> genes were identified in the lotus genome and they were well clustered in a similar pattern with their <i>Arabidopsis</i> homologs in seven groups (designated I, IIa-IIe, and III), although no lotus WRKY was clustered in the group IIIa. Most lotus WRKYs were functionally paired, which was attributed to the recently occurred whole genome duplication in lotus. In addition, lotus <i>WRKYs</i> were regulated dramatically by salicilic acid (SA), jasmonic acid (JA), and submergence treatments, and two lotus WRKYs, NnWRKY40a and NnWRKY40b, were significantly induced by JA and promoted lotus BIA biosynthesis through activating BIA biosynthetic genes. The investigation of WRKY TFs for this basal eudicot reveals new insights into the evolution of the <i>WRKY</i> family, and provides fundamental information for their functional studies and lotus breeding.


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