Foliar-feeding insects acquire microbiomes from the soil rather than the host plant
Foliar-feeding insects acquire microbiomes from the soil rather than the host plant
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DOI：
10.1038/s41467-019-09284-w
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发表时间：
2019-03-19
影响因子：
16.6
通讯作者：
Bezemer, T. Martijn
中科院分区：
文献类型：
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作者：
Hannula, S. Emilia;Zhu, Feng;Bezemer, T. Martijn
土壤和植物的微生物群是相互联系的，但这如何影响地上食草昆虫的微生物群是未知的。我们首先在田间地块上生成植物条件土壤，然后在这些土壤中生长的蒲公英上饲养叶食性毛虫，然后评估毛虫的微生物组是归因于条件土壤微生物组还是蒲公英微生物组。保存在完整植物上的幼虫的微生物组与采自同一土壤中生长的植物的离体叶片的幼虫的微生物组不同。离体叶片上饲养的幼虫微生物组相对简单，与叶片微生物组相似，而完整植株上饲养的幼虫微生物组更多样化，与土壤微生物组相似。植物介导的土壤微生物组的变化没有反映在植物组中，但只有在保存在完整植物上的毛虫微生物组中才检测到。我们的研究结果表明，昆虫微生物组依赖于土壤微生物组，植物对土壤微生物组的影响可以传递给地上昆虫，然后以其他植物为食。
Microbiomes of soils and plants are linked, but how this affects microbiomes of aboveground herbivorous insects is unknown. We first generated plant-conditioned soils in field plots, then reared leaf-feeding caterpillars on dandelion grown in these soils, and then assessed whether the microbiomes of the caterpillars were attributed to the conditioned soil microbiomes or the dandelion microbiome. Microbiomes of caterpillars kept on intact plants differed from those of caterpillars fed detached leaves collected from plants growing in the same soil. Microbiomes of caterpillars reared on detached leaves were relatively simple and resembled leaf microbiomes, while those of caterpillars from intact plants were more diverse and resembled soil microbiomes. Plant-mediated changes in soil microbiomes were not reflected in the phytobiome but were detected in caterpillar microbiomes, however, only when kept on intact plants. Our results imply that insect microbiomes depend on soil microbiomes, and that effects of plants on soil microbiomes can be transmitted to aboveground insects feeding later on other plants.