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A species-specific DNA probe for the identification of Meloidogyne hapla.

机译:一种物种特异性DNA探针,用于鉴定根结线虫。

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A species-specific DNA probe for the identification of Meloidogyne hapla. Nematropica 31:17-23. Here we report the development of a DNA probe specific to Meloidogyne hapla , among four species in the genus that we have studied. A small-insert genomic library from an isolate of M. hapla was constructed in the pBluescript vector. From the library, 3 200 clones were differentially screened against genomic DNA from M. arenaria , M. incognita and M. javanica . About 99% of the clones hybridized positively to the three nematode species. The clones that hybridized specifically to the genomic DNA from different M. hapla isolates were selected and further characterized by slot-blot and Southern blot analyses. Sequence analysis from one of the clones reveals a 171 bp A and T-rich DNA insert, and a 55-base DNA oligonucleotide specific to M. hapla isolates.
机译:一种物种特异性DNA探针,用于鉴定根结线虫。 Nematropica 31:17-23。在这里,我们报告了在我们研究的属中的四个物种中,针对Meloidogyne hapla的DNA探针的发展。在pBluescript载体中构建了一个来自鼠疫分枝杆菌的小插入基因组文库。从该文库中,对来自沙雷氏菌,隐孢子虫和爪哇分枝杆菌的基因组DNA进行3 200个克隆的差异筛选。大约99%的克隆与三种线虫物种呈阳性杂交。选择与来自不同的hapla分离株的基因组DNA特异性杂交的克隆,并通过槽印迹和Southern印迹分析进一步表征。来自其中一个克隆的序列分析揭示了一个171 bp的富含A和T的DNA插入片段,以及特异于hapla分离株的55个碱基的DNA寡核苷酸。

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