植物中逆境反应相关的WRKY转录因子进展.pdf

生态学报2011 ，31 (11):3223—3231 Acta Ecologica Sinica 植物中逆境反应相关的WRKY 转录因子研究进展 * ， 李 冉 娄永根 ( ， 310029) 浙江大学昆虫科学研究所 杭州 :WRKY ， 。 摘要 转录因子是植物体内一类比较大的转录因子家族 它在植物的生长发育以及抗逆境反应中起着非常重要的作用 WRKY 、 、 、 ， 综述了 转录因子在植物应对冻害 干旱 盐害等非生物胁迫与病原菌 虫害等生物胁迫反应中的重要调控功能 并概括 了WRKY 转录因子在调控这些逆境反应中的机制。 :WRKY ; ; ; 关键词 转录因子 逆境 调控功能 机制 Research advances on stress responsive WRKY transcription factors in plants * LI Ran ，LOU Yonggen Institute of Insect Sciences ，Zhej iang University ，Hangzhou 310029 ，China Abstract :WRKY proteins ，which contain one or two high conserved WRKYGQK peptide sequence and a zinc finger motif ， are a large family of transcription factors (TFs )in plants． There are 74 and 109 WRKY TFs in Arabidopsis and rice ， respectively ． WRKY TFs regulate expression of genes by binding to W-box in the promoters of the target genes． It has been well documented that WRKY TFs play important roles in plant growth and development ，such as lateral root development ， senescence ，trichome and seed coat development ，sugar metabolism ，sesquiterpene synthesized and seed germination ，and responses to various abiotic and biotic stresses． In this paper ，the roles of WRKY TFs in plant stress responses and their regulation mechanism were summarized． Up to now ，10 WRKY TFs have been found to be involved in plant responses aga