猕猴桃基因组的测序

1、Draft genome of the kiwifruit Actinidia chinensisName:郭学雨Student number:2014050118The main content1、Title2、AbstractDraft genome of the kiwifruit Actinidia chinensis Noun phrases rather than a sentence1、Title2、Abstract The kiwifruit (Actinidia chinensis) is an econo mically and nutritionally importan

2、t fruit crop with remarkably high vitamin C content. Here we report the draft genome sequence of a heterozygous kiwifruit, assembled from 140-fold next-generation sequencing data. The assembled genome has a total length of 616.1Mb and contains 39,040 genes. Comparative genomic analysis reveals that

3、the kiwifruit has undergone an ancient hexaploidization event shared by core eudicots and two more recent whole-genome duplication events. Both recent duplication events occurred after the divergence of kiwifruit from tomato and potato and have contributed to the neofunctionalization of genes involv

4、ed in regulating important kiwifruit characteristics, such as fruit vitamin C, flavonoid and carotenoid metabolism. As the first sequenced species in the Ericales, the kiwifruit genome sequence provides a valuable resource not only for biological discovery and crop improvement but also for evolution

5、ary and comparative genomics analysis, particularly in the asterid lineage. background The kiwifruit (Actinidia chinensis) is an economically and nutritionally important fruit crop with remarkably high vitamin C content. aaaaaa purpose Here we report the draft genome sequence of a heterozygous （杂合的）

6、kiwifruit, assembled from 140-fold next-generation sequencing data. resultThe assembled genome has a total length of 616.1Mb and contains 39,040 genes. Comparative genomic analysis reveals that the kiwifruit has undergone an ancient hexaploidization（六倍体化）event shared by core eudicots and two more re

7、cent whole-genome duplication events. Both recent duplication events occurred after the divergence of kiwifruit from tomato and potato and have contributed to the neofunctionalization （新功能化）of genes involved in regulating important kiwifruit characteristics, such as fruit vitamin C, flavonoid and ca

8、rotenoid metabolism. significanceAs the first sequenced species in the Ericales, the kiwifruit genome sequence provides a valuable resource not only for biological discovery and crop improvement but also for evolutionary and comparative genomics analysis, particularly in the asterid lineage. 猕猴桃是一种既经济又有营养的水果作物，具有非常高的维生素C含量。 本文章报道了一种杂合猕猴桃的基因组序列草图，该草图由140倍基因组覆盖度的新一代测序数据组装而成。 组装成的基因组全长为616.1Mb，共包含39040个基因。比较基因组分析结果揭示猕猴桃经历了一次为核心真双子叶植物所共享的远古六倍体化事件，以及两次较近的全基因组复制事件，两次近期的复制事件均发生在猕猴桃与番茄及马铃薯分歧后，促成了调控如维生素C、类黄酮和类胡萝卜