Delicious poison: genetics of Drosophila host plant preference.
Delicious poison: genetics of Drosophila host plant preference.
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DOI：
10.1016/j.tree.2008.05.010
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发表时间：
2008-09
影响因子：
16.8
通讯作者：
Noah K. Whiteman;N. Pierce
中科院分区：
文献类型：
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作者：
Noah K. Whiteman;N. Pierce
昆虫利用化学线索识别寄主植物，这表明化学感知可能是寄主特化过程中自然选择的一个目标。五篇论文使用了12个最近测序的果蝇基因组的数据，研究了专业和通才物种的化学感受基因功能和进化。一项功能性研究确定了气味结合蛋白，介导损失的毒素避免在一个专家，有针对性的基因组研究表明，专家和岛屿地方病失去化学感受基因比通才和大陆的亲戚更快。总之，这些研究表明，一种模式的化学感受器的进化占主导地位的出生/死亡的动态，加上低水平的潜在的积极选择。
Insects use chemical cues to identify host plants, which suggests that chemosensory perception could be a target of natural selection during host specialization. Five papers using data from the 12 recently sequencedDrosophilagenomes examined chemosensory gene function and evolution across specialist and generalist species. A functional study identifies odorant binding proteins that mediate loss of toxin avoidance in a specialist, and targeted genomic studies indicate specialists and island endemics lose chemosensory genes more rapidly than generalist and mainland relatives. Together, these studies suggest a mode of chemoreceptor evolution dominated by birth/death dynamics, coupled with a low level of potential positive selection.