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烟夜蛾唾液中的一种 GMC 氧化还原酶重新排列了其宿主植物的绿叶挥发性成分。

A salivary GMC oxidoreductase of Manduca sexta re-arranges the green leaf volatile profile of its host plant.

机构信息

Green Life Sciences Research Cluster, Department of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands.

Terrestrial Ecology Unit, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium.

出版信息

Nat Commun. 2023 Jun 28;14(1):3666. doi: 10.1038/s41467-023-39353-0.

DOI:10.1038/s41467-023-39353-0
PMID:37380635
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10307781/
Abstract

Green leaf volatiles (GLVs) are short-chain oxylipins that are emitted from plants in response to stress. Previous studies have shown that oral secretions (OS) of the tobacco hornworm Manduca sexta, introduced into plant wounds during feeding, catalyze the re-arrangement of GLVs from Z-3- to E-2-isomers. This change in the volatile signal however is bittersweet for the insect as it can be used by their natural enemies, as a prey location cue. Here we show that (3Z):(2E)-hexenal isomerase (Hi-1) in M. sexta's OS catalyzes the conversion of the GLV Z-3-hexenal to E-2-hexenal. Hi-1 mutants that were raised on a GLV-free diet showed developmental disorders, indicating that Hi-1 also metabolizes other substrates important for the insect's development. Phylogenetic analysis placed Hi-1 within the GMCβ-subfamily and showed that Hi-1 homologs from other lepidopterans could catalyze similar reactions. Our results indicate that Hi-1 not only modulates the plant's GLV-bouquet but also functions in insect development.

摘要

绿叶挥发物（GLVs）是短链氧化脂类，植物受到胁迫时会将其释放出来。先前的研究表明，烟草天蛾 Manduca sexta 的口腔分泌物（OS）在进食时被引入植物伤口，可催化 GLVs 从 Z-3-到 E-2-异构体的重排。然而，这种挥发性信号的变化对昆虫来说是苦乐参半的，因为它可以被其天敌用作猎物定位线索。在这里，我们表明 M. sexta 的 OS 中的（3Z）：（2E）-己烯醛异构酶（Hi-1）可催化 GLV Z-3-己烯醛转化为 E-2-己烯醛。在不含 GLV 的饮食中饲养的 Hi-1 突变体表现出发育障碍，表明 Hi-1 还代谢其他对昆虫发育很重要的底物。系统发育分析将 Hi-1 置于 GMCβ 亚家族内，并表明来自其他鳞翅目昆虫的 Hi-1 同源物可以催化类似的反应。我们的研究结果表明，Hi-1 不仅调节植物的 GLV-挥发物，而且在昆虫发育中也发挥作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/8ed697b1325e/41467_2023_39353_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/a4affdbb2217/41467_2023_39353_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/765ff70d9bae/41467_2023_39353_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/48f237ad7a9b/41467_2023_39353_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/e5e5dc27f25a/41467_2023_39353_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/aef1f2addb92/41467_2023_39353_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/15af3e60df5f/41467_2023_39353_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/d1d68fd0b8cd/41467_2023_39353_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/8ed697b1325e/41467_2023_39353_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/a4affdbb2217/41467_2023_39353_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/765ff70d9bae/41467_2023_39353_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/48f237ad7a9b/41467_2023_39353_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/e5e5dc27f25a/41467_2023_39353_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/aef1f2addb92/41467_2023_39353_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/15af3e60df5f/41467_2023_39353_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/d1d68fd0b8cd/41467_2023_39353_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f09/10307781/8ed697b1325e/41467_2023_39353_Fig8_HTML.jpg

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