Abstract
The pinewood nematode (Bursaphelenchus xylophilus, PWN) induces pine wilt disease in Pinaceae plants, causing severe destruction to pine forests. Previous studies report that by 2023, 663 cities across 18 provinces in China had been infested by the PWN, necessitating immediate control measures. To identify the genetic variations associated with the PWN's adaptation to new environments, we conducted whole-genome sequencing (WGS) on 13 indigenous PWN samples from two distinct geographic zones within China, specifically Anhui, Liaoning, and Jiangxi provinces. We identified genetic variants and analyzed the genetic structure of these populations, followed by functional gene enrichment analyses. Our findings reveal genetic variants associated with secretion, immune system function, membrane processes, metabolism, catabolism, and cell wall regulation, supporting the hypothesis that the PWN genome has been shaped by local ecosystems.
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