Bemisiatabaci is an important vector of numerous plant viruses, including the emergent semi-persistently transmitted crinivirus Tomato chlorosis virus (ToCV). Its vector feeding behaviour is complex, with important implications for virus transmission, epidemiology and control. Thus, the objective of this study was to investigate the role of the stylet penetration activities of B. tabaci in the inoculation of ToCV in tomatoes by using the electrical penetration graph (EPG) technique. EPG recordings were classified into six categories depending on the waveforms observed. The results showed that ToCV inoculation is mainly associated with stylet activities in phloem sieve elements (E1 waveform), as there was a significant increase in the rate of transmission when whiteflies performed waveform E1. The precise stylet activities - either salivation or egestion - associated with virion release, presumably from retention sites in the foregut, need further investigation.

译文

Bemisiatabaci是许多植物病毒的重要载体,包括新兴的半持续传播的crini病毒番茄萎黄病病毒 (ToCV)。它的媒介喂养行为很复杂,对病毒传播,流行病学和控制具有重要意义。因此,本研究的目的是通过使用电渗透图 (EPG) 技术研究烟粉虱的探针渗透活性在番茄中ToCV接种中的作用。根据观察到的波形,EPG记录分为六类。结果表明,ToCV接种主要与韧皮部筛子元素 (E1波形) 中的管针活性有关,因为当粉虱进行波形E1时,传播速率显着增加。与病毒体释放相关的精确的管心针活动-流涎或分泌-可能来自前肠的保留部位,需要进一步研究。

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