转位因子

本文论述世界上近年来关于稻瘟病菌有性世代、非致病性基因的分析、RFLP分析、非致病性基因的克隆和转基因系的建立、以及转位因子等方面的研究进展和研究成果。

The current studies on sexual Stage avirulence gene analysis , RFLP analysis , cloning of avirulence gene , gene transformation and transposable element of rice blast fungus are discussed in this Paper .

转位因子或插入因子是能够插入到染色体不同位点的dna序列。

Transposable elements , or insertion elements , are DNA sequences which can be inserted into many different sites in chromosomes .

不仅有转位因子的垂直转移，还存在着水平转移。

TE possess not only vertical transfer but also the horizontal or lateral transfer .

按照其结构特点以及所编码反转录蛋白因子的不同，可分为反转录转位因子，反转录子，反转录病毒，能编码反转录所需蛋白的因子，不能编码反转录所需蛋白的因子。

Because of this transposition function they can be considered a transposable element . According to the character of their structure and the different reverse transcription protein factors they code for , they have been classed as reverse transposition elements ;

转位因子与居群动态、选择和遗传漂变等密切相关，它可以使宿主获得新的机能，同时也可从宿主中丢失，甚至使居群或物种绝灭。

There is a close relationship between TE and population dynamics , natural selection , and genetic drift . TE can make the host to get new function , meantime may get lost from the host even the extinct of population or species .