The MdERF61-mdm-miR397b-MdLAC7b module regulates apple resistance to Fusarium solani via lignin biosynthesis
文献类型： 外文期刊
作者： Zhou, Zhe;Zhang, Haiqing;Yao, Jia-Long;Gao, Qiming;Wang, Yarong;Liu, Zhenzhen;Zhang, Yaru;Tian, Yi;Yan, Zhenli;Zhu, Yanmin;Zhang, Hengtao
作者机构：
期刊名称： PLANT PHYSIOLOGY
ISSN： 0032-0889
年卷期： 2024 年
页码：
收录情况： SCIE（2024版）
摘要： Apple replant disease (ARD) is a worldwide problem that threatens the industry. However, the genetic mechanism underlying plant disease resistance against ARD remains unclear. In this study, a negative regulatory microRNA in Malus domestica, mdm-miR397b, and its direct target MdLAC7b (Laccase) was selected for examination based on our previous small RNA and degradome sequencing results. Overexpressing the mdm-miR397b-MdLAC7b module altered the lignin deposition and jasmonic acid contents in apple roots, which also led to increased resistance to Fusarium solani. Additionally, Y1H library screening using mdm-miR397b promoter recombinants identified a transcription factor, MdERF61, that represses mdm-miR397b transcriptional activity by directly binding to 2 GCC-boxes in the mdm-miR397b promoter. In summary, our results suggest that the MdERF61-mdm-miR397b-MdLAC7b module plays a crucial role in apple resistance to F. solani and offers insights for enhancing plant resistance to soil-borne diseases in apples.
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