Phytoalexin deficient 4 is associated with the lesion mimic trait in watermelon clalm mutant (Citrullus lanatus).

ABSTRACT: In watermelon (Citrullus lanatus), lesion mimic is a rare, valuable trait that can be used by breeders for selection at early growth stages. In this study, we tested a seven-generation family to determine the inheritance and genetic basis of this trait. As revealed by analysis of the lesion mimic mutant clalm, this trait is controlled by a single dominant gene. Whole genome resequencing-bulked segregant analysis demonstrated that this gene is located on chromosome 4 from 3,760,000 bp to 7,440,000 bp, a region corresponding to a physical distance of 3.68 Mb encompassing approximately 72 annotated genes. There are 6 genes with non-synonymous mutation SNP sites. The predicted target gene, ClCG04G001930, encodes a Phytoalexin deficient 4 (PAD4), a protein that plays an important regulatory rol

SUBMITTER: Shi J 

PROVIDER: S-EPMC11755929 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature