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<p>Polyphagous pests often undergo the phenomenon of host-switching to expand their diet and enhance their environmental adaptability. The <i>Tetranychus turkestani</i> is the dominant mite pest in the northern Xinjiang region. To evaluate the influence of feeding experiences and its microbiome on the adaptation of <i>T. turkestani</i> to soybean hosts. we constructed age-stage two-sex life table and 16&#xa0;S rDNA sequencing technology, the effects of the pre-host on the adaptability of <i>T. turkestani</i> to soybeans and the microbiome community were systematically evaluated, and the correlation between the two was further explored. The results show that: before host-switching, <i>T. turkestani</i> exhibited the highest intrinsic rate (0.277 d <sup>−1</sup>) and net reproductive rate (124.500) on the soybean host. The <i>r</i> (0.185 d<sup>−1</sup>) and <i>R</i><sub>0</sub> (37.488) of <i>T. turkestani</i> are lowest when reared on <i>Amaranthus retroflexus</i>. After the host was switched to soybean, both the <i>r</i> and <i>R</i><sub>0</sub> of <i>T. turkestani</i> increased. Similarly, the Chao1 index of <i>T. turkestani</i> exhibited a significant increase. When <i>T. turkestani</i> feeds on <i>A. retroflexus</i>, <i>Wolbachia</i> (97.01%), an insect endosymbiont, is the predominant microbiome. In contrast, when it feeds on <i>Chenopodium album</i>, <i>Spiroplasma</i> (54.59%) becomes the dominant microbiome. After the host was switched to soybean, the composition of microbiome in <i>T. turkestani</i> became similar to that of populations feeding on soybean. Correlation analysis revealed that <i>Spiroplasma</i> and <i>Wolbachia</i> were significantly positively correlated with both the oviposition period in host-switching of <i>T. turkestani</i>.</p>

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The effects of the previous host on the adaptability of Tetranychus turkestani on soybean and its microbiome

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Bing Zhang,
  • Shu Wang,
  • Xiang Li,
  • Jiayi Wang,
  • Chen Fang,
  • Jianping Zhang,
  • Jie Su

摘要

Polyphagous pests often undergo the phenomenon of host-switching to expand their diet and enhance their environmental adaptability. The Tetranychus turkestani is the dominant mite pest in the northern Xinjiang region. To evaluate the influence of feeding experiences and its microbiome on the adaptation of T. turkestani to soybean hosts. we constructed age-stage two-sex life table and 16 S rDNA sequencing technology, the effects of the pre-host on the adaptability of T. turkestani to soybeans and the microbiome community were systematically evaluated, and the correlation between the two was further explored. The results show that: before host-switching, T. turkestani exhibited the highest intrinsic rate (0.277 d −1) and net reproductive rate (124.500) on the soybean host. The r (0.185 d−1) and R0 (37.488) of T. turkestani are lowest when reared on Amaranthus retroflexus. After the host was switched to soybean, both the r and R0 of T. turkestani increased. Similarly, the Chao1 index of T. turkestani exhibited a significant increase. When T. turkestani feeds on A. retroflexus, Wolbachia (97.01%), an insect endosymbiont, is the predominant microbiome. In contrast, when it feeds on Chenopodium album, Spiroplasma (54.59%) becomes the dominant microbiome. After the host was switched to soybean, the composition of microbiome in T. turkestani became similar to that of populations feeding on soybean. Correlation analysis revealed that Spiroplasma and Wolbachia were significantly positively correlated with both the oviposition period in host-switching of T. turkestani.