BACKGROUNDVector‐borne viruses often manipulate plant defenses against insect vectors, thereby impacting vector population dynamics and in turn virus spread. However, the factors regulating the outcome of insect vector–virus–plant tripartite interactions, such as the feature of virus–vector combinations, are understudied.RESULTSUsing eight whitefly (Bemisia tabaci)–begomovirus combinations exhibiting different degrees of competence, namely virus transmission efficiency, we examined the association between whitefly–begomovirus competence and plant‐mediated mutualism. We found that three begomoviruses, tomato yellow leaf curl virus (TYLCV), cotton leaf curl Multan virus (CLCuMuV) and Sri Lankan cassava mosaic virus (SLCMV), can effectively infect but cause distinct symptoms in tobacco (Nicotiana tabacum) plants. Although the efficient vectors Middle East‐Asia Minor 1 (MEAM1) and Mediterranean (MED) whiteflies performed significantly better on TYLCV‐infected plants than on control plants, the less‐efficient vector Asia II 1 performed similarly on TYLCV‐infected and uninfected plants. CLCuMuV infection of plants significantly enhanced the performance of the efficient vector Asia II 1, whereas the performance of the inefficient vector MEAM1 was unaffected by the virus infection status of the plants. SLCMV infection of plants significantly increased the survival and fecundity of the efficient vector Asia II 1, but did not affect the performance of the poorer vectors MEAM1 and MED.CONCLUSIONCombined analysis of our data and case studies from the literature indicates that plant‐mediated mutualism between whiteflies and the begomoviruses they transmit is more likely to occur in competent combinations. Our findings shed novel light on the ecological principles governing the variations in insect vector–virus–plant tripartite interactions. © 2024 Society of Chemical Industry.

中文翻译：

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增强的粉虱-Begomovirus 能力与植物介导的共生关系的关联


背景病毒传播的病毒经常操纵植物对昆虫媒介的防御，从而影响媒介种群动态，进而影响病毒传播。然而，调节昆虫媒介-病毒-植物三方相互作用结果的因素，如病毒-媒介组合的特征，尚未得到充分研究。结果利用 8 种表现出不同能力程度（即病毒传播效率）的粉虱 （Bemisia tabaci）-begomovirus 组合，我们研究了粉虱-begomovirus 能力与植物介导的共生关系之间的关联。我们发现三种贝戈病毒，番茄黄叶卷曲病毒 （TYLCV）、棉花卷叶木尔坦病毒 （CLCuMuV） 和斯里兰卡木薯花叶病毒 （SLCMV），可以有效感染烟草 （Nicotiana tabacum） 植物，但引起不同的症状。尽管高效载体中东-亚洲小规模 1 （MEAM1） 和地中海 （MED） 粉虱在 TYLCV 感染的植物上的表现明显优于对照植物，但效率较低的媒介亚洲 II 1 在 TYLCV 感染和未感染的植物上的表现相似。植物的 CLCuMuV 感染显著提高了高效载体 Asia II 1 的性能，而低效载体 MEAM1 的性能不受植物病毒感染状态的影响。植物的 SLCMV 感染显著提高了高效载体 Asia II 1 的存活率和繁殖力，但不影响较差载体 MEAM1 和 MED 的性能。结论对我们的数据和文献案例研究的综合分析表明，粉虱和它们传播的 begomovirus 之间植物介导的共生关系更有可能以适当的组合发生。 我们的研究结果为控制昆虫媒介-病毒-植物三方相互作用变化的生态学原理提供了新的启示。© 2024 化工学会.