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Phylogenetic analysis on coevolution between Leguminous plants and their parasites/mutualists.

豆科植物与其寄生物/共生体之间协同进化的系统发育分析。

基本信息

批准号：
17405005
负责人：
SHIMADA Masakazu
金额：
$ 9.13万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

Shimada and Ito supervised a graduate student, Kato, to make a few oversea surveys in Mexico from December to March every year. They conducted molecular phylogenetic analyses on Bruchid insects in Mexico in order to study specialization/generalization of host plants. In general, evolutionary entomologists usually consider that a phytophagous insect changes evolutionally from polyphagy to oligophagy when they adapt to the host plants. However, when we examined the phylogenies of the genus Mimosestes, a group (M. amicus, M. insularis, M. mimosae) has evolved from a specialist to a generalist with wider diets of host plants. In addition, Shimada and Hidzume conducted a genomic analysis on a Wolbachia DNA region that was transmitted horizontally from Wolbachia to X-chromosome of the azuki bean beetle, C. chinensis.Tuda studied the evolutionary shift of host plants in the bruchid seed predators. She showed that dietary shift to dried-matured seeds in the genus, Callosobruchus, has evolved w … More ith longer dry season, based on their maximum likelihood phylogenies. Bruchidius and Bruchus showed conservative usage for host legumes, and she pointed out that the two genera were likely to expand their host range to Acacia legumes. In addition, Tuda had oversea surveys to study bruchid seed beetles that have a specialist diet in mid-eastern Europe in collaboration with Hangarian cooperators. They examined concordance between the molecular phylogenies and several categories of host traits and concluded that the most concordant character was chemical poisonous substances.Toquenaga had oversea surveys in every February and March and collected emergent bruchid seed beetles from infectious seeds that were traded in markets there. He studied the wall-making behavior and the contest/scramble competition type in C. maculates in order to study their genetic variation within/between strains. In addition, they visited English cooperators and were given several strains of C. maculates to reveal hybridization possibility between C. maculates and C. analis that had been suggested in previous articles. Less

岛田和伊藤每年12月至3月指导研究生加藤在墨西哥进行几次海外调查。为了研究寄主植物的特化/泛化，他们对墨西哥的Bruchid昆虫进行了分子系统发育分析。一般来说，进化昆虫学家通常认为，植食昆虫在适应寄主植物时，会从多食进化为寡食。然而，当我们研究含羞草属的系统发育时，一个群体（M. amicus， M. insularis， M.含羞草）已经从一个专业进化为一个广泛食用寄主植物的通才。此外，Shimada和Hidzume对从Wolbachia水平传播到azuki bean beetle， C. chinensis的x染色体的沃尔巴克氏体DNA区域进行了基因组分析。Tuda研究了野鼠种子捕食者寄主植物的进化转变。她指出，根据最大可能的系统发育，Callosobruchus属植物的饮食习惯向干燥成熟种子的转变已经演变成更长的旱季。Bruchidius和Bruchus对寄主豆科植物的使用较为保守，她指出这两个属有可能将寄主范围扩大到豆科植物金合欢（Acacia豆类）。此外，Tuda还与Hangarian合作者合作进行了海外调查，研究了在中欧有专门饮食的野蓟种子甲虫。他们检查了分子系统发育和几种寄主特征之间的一致性，并得出结论，最一致的特征是化学有毒物质。Toquenaga每年2月和3月在海外进行调查，从市场上交易的传染性种子中收集新出现的野蓟种子甲虫。他研究了C. maculates的造壁行为和竞争/争夺竞争类型，以研究它们在菌株内/菌株间的遗传变异。此外，他们还拜访了英国的合作者，并得到了几株C. maculates，以揭示C. maculates与C. analys之间杂交的可能性。少