家蚕的第二代综合图谱揭示了鳞翅目昆虫之间的染色体同线性和保守的基因顺序。
A second-generation integrated map of the silkworm reveals synteny and conserved gene order between lepidopteran insects.
作者信息
Yasukochi Yuji, Ashakumary Laksmikutty A, Baba Kotaro, Yoshido Atsuo, Sahara Ken
机构信息
Insect Genome Laboratory, National Institute of Agrobiological Sciences, Japan.
出版信息
Genetics. 2006 Jul;173(3):1319-28. doi: 10.1534/genetics.106.055541. Epub 2006 Mar 17.
Abstract
A second-generation linkage map was constructed for the silkworm, Bombyx mori, focusing on mapping Bombyx sequences appearing in public nucleotide databases and bacterial artificial chromosome (BAC) contigs. A total of 874 BAC contigs containing 5067 clones (22% of the library) were constructed by PCR-based screening with sequence-tagged sites (STSs) derived from whole-genome shotgun (WGS) sequences. A total of 523 BAC contigs, including 342 independent genes registered in public databases and 85 expressed sequence tags (ESTs), were placed onto the linkage map. We found significant synteny and conserved gene order between B. mori and a nymphalid butterfly, Heliconius melpomene, in four linkage groups (LGs), strongly suggesting that using B. mori as a reference for comparative genomics in Lepidotera is highly feasible.
摘要
构建了家蚕的第二代连锁图谱，重点是对公共核苷酸数据库和细菌人工染色体（BAC）重叠群中出现的家蚕序列进行定位。通过基于聚合酶链反应（PCR）的筛选，利用来自全基因组鸟枪法（WGS）序列的序列标签位点（STS）构建了总共874个BAC重叠群，包含5067个克隆（占文库的22%）。总共523个BAC重叠群，包括公共数据库中登记的342个独立基因和85个表达序列标签（EST），被定位到连锁图谱上。我们在四个连锁群（LG）中发现家蚕与蛱蝶科蝴蝶——红袖蝶（Heliconius melpomene）之间存在显著的同线性和保守的基因顺序，这有力地表明将家蚕用作鳞翅目比较基因组学的参考是高度可行的。
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