广州地区番石榴根结线虫鉴定与14-3-3基因的克隆
发布时间:2018-08-13 11:21
【摘要】:【目的】摸清广州地区番石榴根结线虫的种类、分布及致病机制。【方法】观察番石榴根结线虫的雄虫、二龄幼虫、雌虫及其会阴花纹的形态学特征,根据根结线虫的通用引物#C2F3和#1108对线虫mt DNA的COⅡ和lr RNA基因间序列进行PCR扩增,获得750 bp的特异扩增产物,将扩增片段在Gen Bank上进行Blast比对。通过南方根结线虫与北方根结线虫的14-3-3序列设计简并引物,进一步扩增已鉴定的象耳豆根结线虫的14-3-3基因。【结果】广州地区番石榴根结线虫的形态与象耳豆根结线虫(Meloidogyne enterolobii)相似;其扩增片段与象耳豆根结线虫(M.enterolobii)比对,序列相似性在99%以上。扩增了象耳豆根结线虫的14-3-3基因,结果显示该基因的开放阅读框包含783 bp的片段,编码261个氨基酸,命名为Me-14-3-3。【结论】广州地区番石榴根结线虫为象耳豆根结线虫(M.enterolobii),14-3-3蛋白基因被成功克隆,扩增结果为进一步研究14-3-3蛋白基因在象耳豆根结线虫生长发育中的功能、摸清致病机制等方面奠定良好的基础。
[Abstract]:[objective] to investigate the species, distribution and pathogenic mechanism of guava root knot nematode in Guangzhou. [methods] the morphological characteristics of male, second instar larvae, female and perineal pattern of guava root knot nematode were observed. According to the universal primers #C2F3 and #1108 of root knot nematode, the CO 鈪,
本文编号:2180830
[Abstract]:[objective] to investigate the species, distribution and pathogenic mechanism of guava root knot nematode in Guangzhou. [methods] the morphological characteristics of male, second instar larvae, female and perineal pattern of guava root knot nematode were observed. According to the universal primers #C2F3 and #1108 of root knot nematode, the CO 鈪,
本文编号:2180830
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