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VOL. 7, ISSUE 3 (2025)

Biochemical effects of bacterial symbionts of entomopathogenic nematodes on the Leaf miner Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae)

Authors

Jihan Muhammad, Salem M M Hagar, Ayat I El-Kholy, Waleed D Saleh, M A Ali

Abstract

Tuta absoluta, a very fecund lepidopteran pest, seriously affects tomato production worldwide besides its growing insecticidal resistance; thus, seeking novel routes to combat it has become an exigency. Entomopathogenic nematodes (EPNs) and their symbiotic bacteria can be a choice as a new protection manner for tomato plants, at the same time nonhazardous to the environment.

The aim of this study is to investigate the biochemical effects of bacterial symbionts of entomopathogenic nematodes on the 3rd larval instar of the leaf miner, Tuta absoluta, under laboratory conditions. Biochemical changes were observed, including a marked decrease in total protein and an increase in protease contents in the pest. The data revealed that P. luminescens (EGAP2) had the most significant reduction in protein concentration (-66.62%), while P. luminescens (EGAP4) had the lowest (-23.59%) in treated insect proteins. Additionally, the highest increase in protease activity was detected in P. luminescens (EGAP2) (65.4±1.13) treated larvae.

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Pages:6-11

How to cite this article:

Jihan Muhammad, Salem M M Hagar, Ayat I El-Kholy, Waleed D Saleh, M A Ali "Biochemical effects of bacterial symbionts of entomopathogenic nematodes on the Leaf miner <i>Tuta absoluta </i>(Meyrick, 1917) (Lepidoptera: Gelechiidae)". International Journal of Agriculture and Plant Science, Vol 7, Issue 3, 2025, Pages 6-11

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