The chromosome-level genome of the woolly apple aphid Eriosoma lanigerum provides insight into waxy synthesis and secretion
文献类型: 外文期刊
作者: Zhou, Hongxu;Zhang, Bin;Luo, Chaorui;Meng, Canyu;Teng, Ziwen;Guo, Yi;Li, Changyou;Xing, Longsheng;Li, Zaiyuan;Fan, Yinjun;Liu, Conghui;Qian, Wanqiang;Wan, Fanghao
作者机构:
关键词: (3-1-2)Fatty acid metabolism;ABC transporters;differential gene expression;chromosome-level assembly;transposable elements;evolutionary divergence;gene family expansion;wax secretion adaptation
期刊名称: ENTOMOLOGIA GENERALIS
ISSN: 0171-8177
年卷期: 2025 年
页码:
收录情况: SCIE(2025版)
摘要: Woolly apple aphid (WAA), Eriosoma lanigerum (Hausmann), is a worldwide invasive pest that seriously damages apple trees in almost all apple-growing areas. Waxy secretion is characterised as an important weapon in increasing invasion and adaptation to a broad range of biological and abiotic factors. We used PacBio reads to produce a 357 Mb highquality chromosome-level assembly for the WAA genome. The N50 lengths of contigs and chromosomes were 4.0 Mb and 65.1 Mb, respectively. In total, 95 Mb (12.5%) repeat sequences and 15,906 gene models were identified in the genome. We identified 101 expanded and 33 exclusive orthologous groups in E. lanigerum, mainly functioning in cell growth and death, signal transduction, and carbohydrate and amino acid metabolism, which contribute to adaptation and metabolite synthesis. To uncover the molecular basis of wax synthase processes, related enzymes and transporters were identified through transcriptomes of five developmental stages and among three segments. Although wax synthase-related genes were not found in WAA genome and other related species, four genes were identified involved in fatty acid biosynthesis and metabolism, thereby producing and transporting the waxy secretion of WAA. These results indicated that different pathways might be employed by WAA in wax ester biosynthesis compared with other eukaryotic organisms. These findings collectively provide novel insight into the molecular mechanisms of the wax synthase processes of WAA.
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