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144238

Insecticidal Activity, Growth Inhibitory and Biochemical Effects of Plant Lectins and Bacillus thuringiensis var. kurstaki against the Pink Bollworm, Pectinophora gossypiella

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Last updated: 01 Jan 2025

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Plant pest management

Abstract

Insecticidal activity and sublethal effects of white kidney bean and soybean lectins compared to Bacillus thuringiensis var. kurstaki were evaluated against pink bollworm (PBW), Pectinophora gossypiella (Saunders). The in vivo effects of these lectins on the total proteases and α-amylase activities of PBW were also carried out. Results revealed that, B. thuringiensis (LC50 = 61.7 and 36.1 µg / g diet) was approximately 4.7 and 4.8 times more toxic than kidney bean lectins (LC50 = 289.2 and 175.0 µg / g diet) and 2.2 times more toxic than soybean lectins (LC50 = 134.3 and 81.2 µg / g diet) after 5 and 6 days of treatment on the 2nd instar larvae. The LC25 equivalent concentration of B. thuringiensis and soybean lectins achieved the highest reduction of larval weight (11.9 and 13.0 mg / larva compared to 27.1 mg / larva in control) after 9 days of treatment. While kidney bean and soybean lectins at LC10 and LC25 increased the average time to pupation of PBW, B. thuringiensis at LC25 decreased the average time to pupation compared to control. All treatments significantly decreased the pupal mean weight and adult emergence rates compared to control. Kidney bean lectins, soybean lectins and B. thuringiensis at LC25 reduced the average number of eggs laid / female (fecundity) to 35.2, 31.5 and 34.5, respectively, compared to 89.0 in control. In addition, %egg hatch (fertility) significantly decreased to 53.8, 51.7 and 49.1% in kidney bean lectins, soybean lectins and B. thuringiensis LC25 treatments compared to 93.0% in control. Kidney bean and soybean lectins inhibited the activity of total proteases and α-amylase. Results of the present study suggest that kidney bean and soybean lectins can be used as suitable alternatives for B. thuringiensis in integrated management programs of pink bollworm. 

DOI

10.21608/asejaiqjsae.2021.144238

Keywords

pink bollworm, Plant lectins, Bacillus thuringiensis, sublethal effects

Authors

First Name

Dalia A.

Last Name

El-Deeb

MiddleName

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Affiliation

Central Agricultural Pesticides Laboratory, Sabahia Station, Alexandria Egypt.

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Orcid

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Volume

42

Article Issue

JANUARY- MARCH

Related Issue

20854

Issue Date

2021-01-01

Receive Date

2020-12-06

Publish Date

2021-01-31

Page Start

11

Page End

20

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 42_Issue JANUARY- MARCH_Pages 11-20.pdf

PDF . 342.1kB

Link

https://asejaiqjsae.journals.ekb.eg/article_144238.html

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https://asejaiqjsae.journals.ekb.eg/service?article_code=144238

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2

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Insecticidal Activity, Growth Inhibitory and Biochemical Effects of Plant Lectins and Bacillus thuringiensis var. kurstaki against the Pink Bollworm, Pectinophora gossypiella

Details

Type

Article

Created At

22 Jan 2023