摘要
柑橘衰退病毒(Citrus tristeza virus,CTV)属于长线性病毒科(Closteroviridae),是目前已知植物病毒中基因组最大的病毒,其引起的柑橘衰退病对全世界的柑橘产业造成着严重影响。本文以在GenBank登录的32条全长CTV基因组序列为材料,分析简单重复序列(Simple Sequence Repeats,SSRs)在其基因组序列中的分布情况。研究结果显示,在所有的CTV基因组中均有SSRs的分布,SSRs重复次数较少,二型SSRs占主导地位,未在CTV基因组序列中发现五型和六型SSRs。在32条基因组全长序列中仅在5条序列中发现四型SSRs。这是首次以柑橘病毒为材料进行的SSRs分析研究。
Citrus tristeza virus （CTV） belongs to the family of Closteroviridae, which has the biggest genome com- pared with the other plant viruses, and impacts on the worldwide citrus industry negatively. 32 complete genome se- quences of CTV downloaded from GenBank were used to analyze the distribution of simple sequence repeats （SSRs） types. The results suggested that SSRs existed in all CTV genome sequences whereas the numbers were low. Dinucleotide repeats were the major type in CTV sequence while pentanucleotide repeats and hexanucleotide repeats were not found in CTV, and tetranucleotide repeats were rare, found in merely 5 of 32 CTV genome se- quences. This is the first report about the SSRs analysis in citrus virus genome.
出处
《生物信息学》
2013年第3期237-242,共6页
Chinese Journal of Bioinformatics
关键词
柑橘衰退病毒
简单重复序列
植物病毒
Citrus Tristeza Virus, Simple Sequence Repeats, Plant Viruses
