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Genetic variability among three Egyptian isolates of Heterorhabditis indica using a new marker technique (SCoT)
Egyptian Journal of Biological Pest Control ( IF 2.4 ) Pub Date : 2021-04-26 , DOI: 10.1186/s41938-021-00419-0
Amany M. Abd El Azim , Etr H. K. Khashaba

Entomopathogenic nematodes (EPNs) are a group of nematode families, have the ability to search for their hosts, and are considered as promising biological control candidates for insect pests, providing protection to non-target organisms and the environment. This study was conducted to isolate indigenous EPN isolates from Egyptian agricultural soils for further use in biological control programs and study their genetic polymorphism among the previously isolated isolates under accession no. MH553167 and MK300683 and the new isolate (MH496627), using the start codon targeted (SCoT) marker. One out of 15 soil samples obtained from a banana cultivated field was positive for the presence of EPNs, using the Galleria baiting method. Morphological analysis and sequencing of the internal transcribed spacer (ITS) region suggested that the isolate obtained belongs to Heterorhabditis indica. The sequence of the ITS was submitted to the National Center for Biotechnology Information (NCBI) and registered under accession no. MH496627. Ten SCoT primers were used in the study; the polymorphic bands were 68 out of 76 with 89% as polymorphism percentage. The highest numbers of bands were 10 bands generated by SCoT 1 and SCoT 18 while SCoT 48 and SCoT 60 recorded the lowest band number (5 bands). The present study is considered as a preliminary study to demonstrate the effectiveness of the SCoT marker for the first time in assessing genetic relationships in EPNs.

中文翻译:

利用一种新的标记技术(SCoT)在埃及的三种印度He杂种分离株中进行遗传变异

昆虫病原线虫(EPNs)是一组线虫科,具有寻找其寄主的能力,被认为是有前途的害虫生物控制候选物,可为非目标生物和环境提供保护。进行这项研究是为了从埃及农业土壤中分离出本土的EPN分离株,以进一步用于生物防治计划,并研究了先前分离的分离株(保藏号为)中的遗传多态性。MH553167和MK300683,以及使用起始密码子靶向(SCoT)标记的新分离株(MH496627)。使用Galleria诱饵方法,从香蕉栽培田中获得的15个土壤样品中有1个对EPNs呈阳性。内部转录间隔区(ITS)区域的形态学分析和测序表明,所获得的分离株属于印度杂种人。ITS的序列已提交给国家生物技术信息中心(NCBI),并以登记号No.1进行了注册。MH496627。该研究中使用了十种SCoT引物。多态性条带为76个中的68个,多态性百分比为89%。最高的波段数是SCoT 1和SCoT 18生成的10个波段,而SCoT 48和SCoT 60记录的波段数最低(5个波段)。本研究被认为是初步证明SCoT标记物在评估EPNs遗传关系中的有效性的初步研究。ITS的序列已提交给国家生物技术信息中心(NCBI),并以登记号No.1进行了注册。MH496627。该研究中使用了十种SCoT引物。多态性条带为76个中的68个,多态性百分比为89%。最高的波段数是SCoT 1和SCoT 18生成的10个波段,而SCoT 48和SCoT 60记录的波段数最低(5个波段)。本研究被认为是初步证明SCoT标记物在评估EPNs遗传关系中的有效性的初步研究。ITS的序列已提交给国家生物技术信息中心(NCBI),并以登记号No.1进行了注册。MH496627。该研究中使用了十种SCoT引物。多态性条带为76个中的68个,多态性百分比为89%。最高的波段数是SCoT 1和SCoT 18生成的10个波段,而SCoT 48和SCoT 60记录的波段数最低(5个波段)。本研究被认为是初步证明SCoT标记物在评估EPNs遗传关系中的有效性的初步研究。最高的波段数是SCoT 1和SCoT 18生成的10个波段,而SCoT 48和SCoT 60记录的波段数最低(5个波段)。本研究被认为是初步证明SCoT标记物在评估EPNs遗传关系中的有效性的初步研究。最高的波段数是SCoT 1和SCoT 18生成的10个波段,而SCoT 48和SCoT 60记录的波段数最低(5个波段)。本研究被认为是初步证明SCoT标记物在评估EPNs遗传关系中的有效性的初步研究。
更新日期:2021-04-27
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