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52607

EVALUATION OF ACARICIDAL ACTIVITY OF PURPUREOCILLIUM LILACINUM ISOLATED FROM EGYPTIAN SOIL AGAINST TETRANYCHUS URTICAE

Article

Last updated: 01 Jan 2025

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Subjects

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Tags

Environment
Plants

Abstract

The study is aimed to isolate and identify a potential entomopathogenic fungus from fields infested with spider mites and evaluate them as a bio-rationale agent against Tetranychus urticae Koch., which is an important agricultural pest that infests horticultural crops in both field and greenhouses. Macroscopic and microscopic characteristics showed that the obtained entomogenous isolate was Purpureocillium lilacinum(formerly, Paecilomyces lilacinus). P. Lilacinum demonstrated mortality rates on adult females of T. urticae of 71.19 and 77.97% with conidial concentrations of and 1.6 , respectively,



10 days after application. Median lethal concentration of P. lilacinum was 2.85 106 conidia/ml. Enzymatic activity of P.
lilacinum was evaluated. In this context, chitinolytic activity of P. lilacinum was relatively weak, since the clear halo obtained was only 4.43 mm in diameter. The activity of chitinase enzyme insignificantly increased over the incubation period of 10 days. In contrast, proteolytic activity of P. lilacinum was high and showed a clear zone (25.8 mm) around the colony after 10 days. So, it is concluded that P. lilacinum has a potential biological control againstT. urticae. Finally, evaluation of the ethyl acetate extract of P. lilacinum showed acaricidal potency since it exhibited LC50 values of 10.49 mg/ml for eggs and 30.75 mg/ml for adults. So, it is concluded that P. lilacinum has a potential biological control againstT. urticae.
 

DOI

10.21608/ejdr.2019.8033.1021

Keywords

Paecilomyces lilacinus, two spotted spider mite, biological control, secondary metabolites

Authors

First Name

Mohamed

Last Name

Nawar

MiddleName

Adel

Affiliation

Department of Plant Protection, Desert Research Centre, Cairo, Egypt.

Email

ma_nawar@yahoo.com

City

-

Orcid

-

First Name

Amany

Last Name

Abo-Elnasr

MiddleName

Awad

Affiliation

Department of Botany and Microbiology, Faculty of Science, Helwan University, Egypt.

Email

amanyabonasr@yahoo.com

City

-

Orcid

-

First Name

Abdel Nasser

Last Name

Kobisi

MiddleName

Ahmed

Affiliation

Department of Plant Protection, Desert Research Centre, Cairo, Egypt

Email

nkobisi@yahoo.com

City

-

Orcid

-

First Name

Gohyza

Last Name

Hefnawy

MiddleName

Ahmed

Affiliation

Department of plant protection, Desert Research Centre, Cairo, Egypt.

Email

gohyzahefnawy@yahoo.com

City

-

Orcid

-

Volume

68

Article Issue

2

Related Issue

8048

Issue Date

2018-12-01

Receive Date

2019-02-06

Publish Date

2018-12-01

Page Start

157

Page End

172

Print ISSN

1687-8043

Online ISSN

2356-9875

Article File

EJDR_Volume 68_Issue 2_Pages 157-172.pdf

PDF . 1.1MB

Link

https://ejdr.journals.ekb.eg/article_52607.html

Detail API

https://ejdr.journals.ekb.eg/service?article_code=52607

Order

2

Type

Original Article

Type Code

117

Publication Type

Journal

Publication Title

Egyptian Journal of Desert Research

Publication Link

https://ejdr.journals.ekb.eg/

MainTitle

EVALUATION OF ACARICIDAL ACTIVITY OF PURPUREOCILLIUM LILACINUM ISOLATED FROM EGYPTIAN SOIL AGAINST TETRANYCHUS URTICAE

Details

Type

Article

Created At

22 Jan 2023