Hd3a and OsFDl negatively regulate rice resistance to Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv. oryzicola

• 全文链接

Hd3a和OsFDl对水稻抗水稻黄单胞菌pv.大米和水稻黄单胞菌pv.稻瘟病具有负调节作用

关键词：

来源：

Biochemical and Biophysical Research Communications

全文链接：

//agri.nais.net.cn/topic/downloadFile/fce91205-0967-41df-92ee-74f460b2bfe7

来源地址：

//agri.nais.net.cn/topic/downloadFile/fce91205-0967-41df-92ee-74f460b2bfe7

资源所属：

杂交水稻专题

类型：

学术文献

语种：

英语

原文发布日期：

2019-04-14

摘要：

In rice, Hd3a, GF14 and OsFDl proteins, forming florigen activation complex, are key components in flowering time regulation. GF14 genes in rice response to biotic and abiotic stress has also been well addressed. The role of GF14e in rice defense has been well studied. However, whether Hd3a and OsFDl play roles in defense is unclear. In present study, we identified that Hd3a and OsFDl expression is repressed by Xoo and JA, and validated that Hd3a and OsFDl negatively regulate resistance to Xanthomonas oryzae pv. oryzae (Xoo) and Xanthomonas oryzae pv. oryzicola (Xoc). hd3a and osfdl mutants increase resistance to Xoo and Xoc, and activate JA responsive genes expression. Our data also demonstrate that OsFDl binds to the promoters of and activates the expression of JAZ genes; Hd3a, cooperating with GF14e, promotes OsFDl action on JAZ gene expression. The functional confirmation of Hd3a and OsFDl in rice defense makes them to be promising targets in molecular rice breeding.