Beta
75906

Characterisation of Steinernema surkhetense and Its Symbiont Xenrorhabdus stockiae and A Note on Its Geographical Distribution

Article

Last updated: 03 Jan 2025

Subjects

-

Tags

-

Abstract

Two cultured populations of Steinernema surkhetense are described from India. Morphologically and morphometrically this material agrees with other species of the Carpocapsae-group (presence of short juveniles), especially with S. surkhetense. The morphology was somewhat similar to the original description with the distinguishing feature being the presence of anal swelling in second-generation female specimens but absent in the original specimens. The morphometric measurements were in close proximity to those in the original specimens and the PCA analysis of important morphometric characters demonstrated some variability within the test populations. Molecular studies based on 28S and ITS rDNA confirmed the Indian material is well conspecific Nepali populations of S. surkhetense, however, with Nepali populations, two base pair differences were observed at 376 and 713 positions only in ITS rDNA gene. We performed a molecular and biochemical characterization of the bacterial symbiont of S. surkhetense and the symbiont is closely related to Xenorhabdus stockiae, which is widespread among South Asian nematodes from the ‘‘carpocapsae'' group. Finally, we mapped its geographical distribution using a meta-analysis of the ITS GenBank records. The distribution of S. surkhetense based on a meta-analysis of the GenBank records showed its presence in the three Asian countries—India, China, and Nepal, with maximum records from the Indian subcontinent. This species is indigenous to the Indian subcontinent, thus could be tested and later used in the biocontrol of insect pests in India

DOI

10.21608/eajbsa.2020.75906

Keywords

Carpocapsae, Steinernema surkhetense, PCA, Xenorhabdus stockiae, Meta-Analysis, GenBank, Biocontrol

Authors

First Name

Aashaq

Last Name

Bhat

MiddleName

Hussain

Affiliation

Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut

Email

aashiqhussainbhat10@gmail.com

City

Meerut

Orcid

0000-0002-3736-7610

First Name

Lavi

Last Name

Sharma

MiddleName

-

Affiliation

Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut-250004, Uttar Pradesh India

Email

lavi9410sharma@gmail.com

City

-

Orcid

-

First Name

Ashok

Last Name

Chaubey

MiddleName

Kumar

Affiliation

Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut-250004, Uttar Pradesh, India

Email

akc.nema@gmail.com

City

-

Orcid

-

Volume

13

Article Issue

1

Related Issue

10290

Issue Date

2020-03-01

Receive Date

2020-02-08

Publish Date

2020-03-01

Page Start

105

Page End

122

Print ISSN

1687-8809

Online ISSN

2090-0813

Link

https://eajbsa.journals.ekb.eg/article_75906.html

Detail API

https://eajbsa.journals.ekb.eg/service?article_code=75906

Order

11

Type

Original Article

Type Code

667

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

Publication Link

https://eajbsa.journals.ekb.eg/

MainTitle

Characterisation of Steinernema surkhetense and Its Symbiont Xenrorhabdus stockiae and A Note on Its Geographical Distribution

Details

Type

Article

Created At

22 Jan 2023