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植物NBS类抗病基因的进化 被引量：6

Evolution of plant NBS encoding disease resistance genes
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摘要 NBS(Nucleotide-binding site)类抗病基因是植物中最重要的一类抗病基因,其进化模式、结构特点和功能调控一直是抗病基因研究领域的热点。这类基因具有保守的结构域,广泛存在于植物基因组中,在不同植物基因组中数目差异较大且具有较低的表达量。此外,同源NBS类抗病基因之间通过频繁的序列交换产生广泛的序列多样性,且抗病基因位点具有较差的线性。依据基因之间序列交换的频率,抗病基因可分为TypeⅠ和TypeⅡ两类。文章从抗病基因的结构、数量、分布、序列多样性、进化模式以及表达调控等方面进行了综述,旨在为后续NBS类抗病基因的相关研究提供参考。 NBS （nucleotide-binding site） genes are a major class of disease resistance （R） genes in plants. Studies on their evolutionary pattern, structure characteristics and functional regulation have been always paid much atten-tions. NBS genes exist in a various plants by different copy numbers and low expression levels. They encode pro-teins containing conserved NBS domain and C-terminal leucine-rich repeats （LRRs）. The NBS genes have frequent sequence exchanges among homologs and consequently show extensive diversity and poor synteny. Two types of NBS genes are distinguished based on their frequency of sequence exchanges. In this review, we summarize the latest progress of plant NBS encoding genes in terms of structure, number, evolutionary pattern, sequence diversity and distribution in genome, providing some insights into the further research on NBS genes in plant.
作者 罗莎
机构地区 江西农业大学农学院园艺系
出处 《遗传》 CAS CSCD 北大核心 2014年第12期1219-1225,共7页 Hereditas（Beijing)
基金 国家自然科学基金项目(编号:31360050)资助
关键词 NBS类抗病基因 进化模式 序列多样性 线性关系 NBS encoding gene evolutionary pattern sequence diversity synteny
分类号 Q943 [生物学—植物学]
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参考文献49

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