中国农学通报
中國農學通報
중국농학통보
CHINESE AGRICULTURAL SCIENCE BULLETIN
2013年
19期
89-92
,共4页
张玉%罗成刚%殷英%胡小波%戴培刚%张波
張玉%囉成剛%慇英%鬍小波%戴培剛%張波
장옥%라성강%은영%호소파%대배강%장파
烟草%N基因%作用机理%遗传育种
煙草%N基因%作用機理%遺傳育種
연초%N기인%작용궤리%유전육충
tobacco%N gene%action mechanism%genetic breeding
N基因起源于烟草野生种粘毛烟草(Nicotiana glutinosa),属于TIR-NBS-LRR类抗病基因,介导烟草花叶病毒(tobacco mosaic virus, TMV)的抗性,通过转座子标签法得到克隆,目前,N-TMV互作是研究最早且最多的植物-病原菌互作模型之一。笔者从转录产物、表达特征、温度敏感性、对应无毒基因等研究内容回顾了N基因在结构、表达、作用机理等方面的研究进展及现状,归纳了以N基因为TMV抗源在烤烟遗传育种中的应用及取得的成果,并从抗TMV机制研究、抗TMV种质鉴定、种质资源利用等方面对N基因在烤烟抗TMV育种中的高效利用提出了展望。
N基因起源于煙草野生種粘毛煙草(Nicotiana glutinosa),屬于TIR-NBS-LRR類抗病基因,介導煙草花葉病毒(tobacco mosaic virus, TMV)的抗性,通過轉座子標籤法得到剋隆,目前,N-TMV互作是研究最早且最多的植物-病原菌互作模型之一。筆者從轉錄產物、錶達特徵、溫度敏感性、對應無毒基因等研究內容迴顧瞭N基因在結構、錶達、作用機理等方麵的研究進展及現狀,歸納瞭以N基因為TMV抗源在烤煙遺傳育種中的應用及取得的成果,併從抗TMV機製研究、抗TMV種質鑒定、種質資源利用等方麵對N基因在烤煙抗TMV育種中的高效利用提齣瞭展望。
N기인기원우연초야생충점모연초(Nicotiana glutinosa),속우TIR-NBS-LRR류항병기인,개도연초화협병독(tobacco mosaic virus, TMV)적항성,통과전좌자표첨법득도극륭,목전,N-TMV호작시연구최조차최다적식물-병원균호작모형지일。필자종전록산물、표체특정、온도민감성、대응무독기인등연구내용회고료N기인재결구、표체、작용궤리등방면적연구진전급현상,귀납료이N기인위TMV항원재고연유전육충중적응용급취득적성과,병종항TMV궤제연구、항TMV충질감정、충질자원이용등방면대N기인재고연항TMV육충중적고효이용제출료전망。
The N gene, cloned from wild tobacco (Nicotiana glutinosa), is a type member of the Toll-IL-1 receptor homology region (TIR)-nucleotide binding site (NBS)-leucinerich repeat region (LRR) class of R genes and confers resistance to tobacco mosaic virus (TMV). The N gene was isolated by insertional mutagenesis using the Activator (Ac) transposon of maize, and N-TMV interaction was one of the earliest and most studied models of plant-pathogen interaction. In this article, the research progress of N gene in structure, expression, action mechanism were reviewed from the transcription products, expression characteristics, temperature sensitivity, corresponding avirulence gene and other aspects. The efficient using and achievements of N gene in TMV resistance breeding were summarized. And the prospect of efficient using of N gene was given from three aspects, which were the mechanism research of resistant to TMV, identification and utilization of germplasm resources.