Differing Behavioural Responses of Bemisia tabaci MEAM1 and MED to Cabbage Damaged by Conspecifics and Heterospecifics.
Differing Behavioural Responses of Bemisia tabaci MEAM1 and MED to Cabbage Damaged by Conspecifics and Heterospecifics.
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烟粉虱 MEAM1 和 MED 对同种和异种损伤甘蓝的不同行为反应
DOI：
10.1038/srep35095
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发表时间：
2016-10-12
影响因子：
4.6
通讯作者：
Zhang Y
中科院分区：
文献类型：
--
作者：
Kong H;Zeng Y;Xie W;Wang S;Wu Q;Jiao X;Xu B;Zhang Y
烟粉虱是一种寄主范围广泛的严重害虫。以前的研究表明，B。烟粉虱是一个复杂的物种，有许多神秘的物种或生物型，两个最重要的物种是MEAM 1（中东-小亚细亚1）和MED（地中海遗传群）。已知MEAM 1和MED对甘蓝（Brassica oleracea）作为宿主植物的偏好不同，然而，这种偏好的机制尚不清楚。在目前的研究中，主机选择实验表明，MED更喜欢定居和产卵在未受损的甘蓝植物，而不是MED损坏的甘蓝植物。然而，MEAM 1喜欢MED受损的卷心菜植物未受损的植物，并没有表现出显着的偏好未受损或MEAM 1受损的卷心菜植物。气相色谱-质谱联用（GC-MS）分析表明，Q胁迫下甘蓝挥发性物质的释放量大于未胁迫下的：2-乙基-1-己醇、苯甲醇、（E）-2-癸烯醇、苯甲醛、壬醛、乙酸香叶醇酯、4-羟基-4-甲基-2-戊酮、癸烷和α-长松油烯。只有一种挥发性物质，4-羟基-4-甲基-2-戊酮，释放量更大MEAM 1受损的卷心菜植物比未受损的植物。我们的研究结果表明，在草食动物诱导的主机挥发性释放的差异可能有助于解释之间的差异偏好的B。烟粉虱MEAM 1和MED对甘蓝的寄主效应。
The whitefly Bemisia tabaci is a serious pest with an extensive host range. Previous research has shown that B. tabaci is a species complex with many cryptic species or biotypes and that the two most important species are MEAM1 (Middle East-Minor Asia 1) and MED (Mediterranean genetic group). MEAM1 and MED are known to differ in their preference for cabbage, Brassica oleracea, as a host plant, however, the mechanism underlying this preference is unknown. In the current study, a host choice experiment showed that MED prefers to settle and oviposit on undamaged cabbage plants rather than MED-damaged cabbage plants. However, MEAM1 prefers MED-damaged cabbage plants to undamaged plants and does not exhibit a significant preference for undamaged or MEAM1-damaged cabbage plants. On the basis of gas chromatography-mass spectrometry (GC-MS) analysis, the following volatiles were released in larger quantities from Q-damaged cabbage plants than from undamaged plants: 2-ethyl-1-hexanol, benzenemethanol, (E)-2-decenol, benzaldehyde, nonanal, acetic acid geraniol ester, 4-hydroxy-4-methyl-2-pentanone, decane, and α-longipinene. Only one volatile, 4-hydroxy-4-methyl-2-pentanone, was released in greater quantities from MEAM1-damaged cabbage plants than from undamaged plants. Our results suggest that differences in herbivore-induced host volatile release may help explain the differences between the preference of B. tabaci MEAM1 and MED for cabbage as a host.
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