THE SIGNIFICANCE OF MAJOR PHEROMONE COMPONENTS AND INTERSPECIFIC SIGNALS AS EXPRESSED BY RECEPTOR NEURONS IN THE ORIENTAL TOBACCO BUDWORM MOTH, HELICOVERPA-ASSULTA
THE SIGNIFICANCE OF MAJOR PHEROMONE COMPONENTS AND INTERSPECIFIC SIGNALS AS EXPRESSED BY RECEPTOR NEURONS IN THE ORIENTAL TOBACCO BUDWORM MOTH, HELICOVERPA-ASSULTA
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DOI：
10.1007/bf00187627
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发表时间：
1995-12-01
期刊：
影响因子：
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通讯作者：
MUSTAPARTA, H
中科院分区：
文献类型：
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作者：
BERG, BG;MUSTAPARTA, H
通过测试单个神经元产生的 12 种 Heliothine 化合物和两种化学类似物，确定了雄性 Helicoverpa assulta 的受体神经元对种内和种间化学信号的特异性。在雄性特异性毛形感器 1.1 型中鉴定出三种类型的受体神经元。一大群神经元（63 个中的 29 个）被调谐到主要信息素成分 (Z)-9-十六烯醛，这与之前在相关物种中获得的结果形成鲜明对比，其中来自该化合物的信息似乎是通过调谐到 (Z)-9-十四烯醛的神经元介导的。2。另一组神经元（28/63）被调整为（Z）-9-十四烯醛，这不是由同种雌性产生的。这些神经元和那些调节主要信息素成分的神经元总是一起出现，可能位于同一个感觉器中。它们的大量表明(Z)-9-十四烯醛在该物种中介导了重要信息，可能导致种间中断。3．第三组神经元 (6/63) 被调谐到第二个主要信息素成分 (Z)-11-十六碳烯醛。这些神经元表现出与相关物种中相应类型神经元相似的特异性，表明它们的膜受体在进化过程中得到了保守。相比之下，H. assulta 中的 (Z)-9-十四烯醛受体神经元与相关物种中的对应神经元表现出不同的特异性，表明它们的受体蛋白进化不同。
Receptor neuron specificities for intra- and interspecific chemical signals were determined in males of Helicoverpa assulta, by testing single neurons for twelve heliothine produced compounds and two chemical analogues. Three types of receptor neurons were identified in the male specific sensilla trichodea type 1.1. One large group of neurons (29 out of 63) was tuned to the major pheromone component (Z)-9-hexadecenal, in contrast to results obtained previously in a related species, where the information from this compound seems to be mediated via neurons tuned to (Z)-9-tetradecenal.2. Another group of neurons (28/63) was tuned to (Z)-9-tetradecenal which is not produced by the conspecific females. These neurons and those tuned to the major pheromone component, always appearing together, are probably located in the same sensillum. Their large number suggests that (Z)-9-tetradecenal mediates an important message in this species, probably causing interspecific interruption.3. The third group of neurons (6/63) was tuned to the second principal pheromone component (Z)-11-hexadecenal. These neurons showed similar specificities as the corresponding type of neurons in related species, indicating a conservation of their membrane receptors through evolution. In contrast, the (Z)-9-tetradecenal receptor neurons in H. assulta showed a different specificity than their counterparts in the related species, suggesting that their receptor proteins have evolved differently.