Cm<i>SGT1</i>, Transcriptionally Regulated by CmWRKY21 and CmWRKY31, Improves Powdery Mildew Resistance in <i>Cucurbita moschata</i>.

ABSTRACT: Powdery mildew (PM), mainly caused by Podosphaera xanthii, is a severe destructive disease that threatens the production of cucurbit crops globally. Heterologous transformation has shown that the CmSGT1 gene (suppressor of the G2 allele of skp1) improved PM resistance in tobacco. However, the function of the gene in pumpkins (Cucurbita moschata) is largely unknown. Herein, transient CmSGT1 overexpression in pumpkin cotyledons inhibited the spore germination and mycelia growth of P. xanthii by inducing an increase in salicylic acid (SA) content, and exogenous SA intensified the inhibitory effect of the gene on the growth of P. xanthii. The β-glucuronidase activity of cotyledons transformed with the CmSGT1 promoter was induced by PM and signal

SUBMITTER: Guo WL 

PROVIDER: S-EPMC12537062 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature