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操纵, MEAM1 直接和间接通过改变视觉和挥发性线索。

manipulates , MEAM1 both directly and indirectly through changes in visual and volatile cues.

机构信息

Department of Entomology and Nematology, North Florida Research and Education Center, University of Florida, Quincy, FL, United States of America.

Insect Behavior and Biocontrol Research Unit, USDA-ARS, Gainesville, FL, United States of America.

出版信息

PeerJ. 2024 Jul 23;12:e17665. doi: 10.7717/peerj.17665. eCollection 2024.

DOI:10.7717/peerj.17665
PMID:39071128
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11276755/
Abstract

The sweetpotato whitefly, MEAM1, is one of the most devastating pests of row-crop vegetables worldwide, damaging crops directly through feeding and indirectly through the transmission of many different viruses, including the geminivirus Tomato yellow leaf curl virus (TYLCV). Y-tube olfactometer tests were conducted at different stages of TYLCV infection in tomatoes to understand how TYLCV affects behavior. We also recorded changes in tomato hosts' color and volatile profiles using color spectrophotometry and gas chromatography-mass spectrometry (GC-MS). We found that the infection status of . and the infection stage of TYLCV influenced host selection, with uninfected whiteflies showing a preference for TYLCV-infected hosts, especially during the late stages of infection. Viruliferous attraction to visual targets significantly differed from non-viruliferous . Late-stage infected hosts had larger surface areas reflecting yellow-green wavelengths and higher emissions of methyl salicylate in their volatile profiles. These findings shed new light on several critical mechanisms involved in the viral manipulation of an insect vector and its economically important host.

摘要

甘薯粉虱，MEAM1，是世界范围内农作物上最具破坏性的害虫之一，它通过取食直接损害作物，通过传播包括番茄黄曲叶病毒（TYLCV）在内的多种不同病毒间接损害作物。我们在番茄感染 TYLCV 的不同阶段进行 Y 型嗅觉仪测试，以了解 TYLCV 如何影响行为。我们还使用分光光度法和气相色谱-质谱联用仪（GC-MS）记录了番茄寄主颜色和挥发物轮廓的变化。我们发现， 的感染状态和 TYLCV 的感染阶段影响了寄主选择，未感染的粉虱更喜欢感染 TYLCV 的寄主，尤其是在感染的后期。带毒的粉虱对视觉目标的吸引力明显不同于非带毒的粉虱。感染后期的寄主具有更大的反射黄绿波长的表面积，挥发物轮廓中释放出更多的甲基水杨酸。这些发现为病毒操纵昆虫媒介及其具有经济重要性的宿主的几个关键机制提供了新的认识。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/e12ac8a7e7a7/peerj-12-17665-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/103abebafe7b/peerj-12-17665-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/a477c27267c7/peerj-12-17665-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/3deaebac7f53/peerj-12-17665-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/ce92a7525ab7/peerj-12-17665-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/88664cc5e5e9/peerj-12-17665-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/e5d029b9c59b/peerj-12-17665-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/0e6bd8e173cb/peerj-12-17665-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/ba25da4792bc/peerj-12-17665-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/e12ac8a7e7a7/peerj-12-17665-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/103abebafe7b/peerj-12-17665-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/a477c27267c7/peerj-12-17665-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/3deaebac7f53/peerj-12-17665-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/ce92a7525ab7/peerj-12-17665-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/88664cc5e5e9/peerj-12-17665-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/e5d029b9c59b/peerj-12-17665-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/0e6bd8e173cb/peerj-12-17665-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/ba25da4792bc/peerj-12-17665-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1609/11276755/e12ac8a7e7a7/peerj-12-17665-g009.jpg

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