Functional Characterization of the Transcription Factor Gene CgHox7 in Colletotrichum gloeosporioides, Which Is Responsible for Poplar Anthracnose.

ABSTRACT: Colletotrichum gloeosporioides is the main pathogen that causes poplar anthracnose. This hemibiotrophic fungus, which can severely decrease the economic benefits and ecological functions of poplar trees, infects the host by forming an appressorium. Hox7 is an important regulatory factor that functions downstream of the Pmk1 MAPK signaling pathway. In this study, we investigated the effect of deleting CgHox7 on C. gloeosporioides. The conidia of the ΔCgHox7 deletion mutant germinated on a GelBond membrane to form non-melanized hyphal structures, but were unable to form appressoria. The deletion of CgHox7 weakened the ability of hyphae to penetrate a cellophane membrane and resulted in decreased virulence on poplar leaves. Furthermore, deleting CgHox7

SUBMITTER: Huang Q 

PROVIDER: S-EPMC11278219 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature