Identifying the role of cellulase gene <i>CsCEL20</i> upon the infection of <i>Xanthomonas citri</i> subsp. <i>citri</i> in citrus.

ABSTRACT: Citrus canker is a devastating disease caused by Xanthomonas citri subsp. citri (Xcc), which secretes the effector PthA4 into host plants to trigger transcription of the susceptibility gene CsLOB1, resulting in pustule formation. However, the molecular mechanism underlying CsLOB1-mediated susceptibility to Xcc remains elusive. This study identified CsCEL20 as a target gene positively regulated by CsLOB1. Cell expansion and cell wall degradation were observed in sweet orange leaves after Xcc infection. A total of 69 cellulase genes were retrieved within the Citrus sinensis genome, comprising 40 endoglucanase genes and 29 glucosidase genes. Transcriptomic analysis revealed that expression levels of CsCEL8, CsCEL9, CsCEL

SUBMITTER: Li Y 

PROVIDER: S-EPMC11704107 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature