Evaluation of some leaf and seed extracts for their insecticidal properties against Aphis gossypii glover (hemiptera: aphididae)

Prasannakumar, N. R.; Rao, V. Keshava; Jyothi, N.; Saroja, S.; Bhat, P. S.

doi:10.5958/0974-4541.2021.00018.7

Cited by 2 publications

(3 citation statements)

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“…The activity of the enzymes involved and the expression of the probable genes were also studied along with the important biological traits. In 2019, the pest outbreaks of P. absoluta were reported in major tomato-growing regions of Karnataka (Kolar) and Andhra Pradesh (Anantapur) (Prasannakumar et al ., 2020). The pest populations were collected from these outbreak areas and preliminary studies were carried out to know the resistant levels.…”

Section: Discussionmentioning

confidence: 99%

“…In the indoxacarb-resistant population, the expression of CYP648i gene changed from 8.1-fold (G1 generation) to 10.6-fold (G20 generation); the increase in the activity of these directly depends on resistant development because expression levels of the genes increased with increased RR over the generation (Daborna et al ., 2007). Many studies have reported the development of insecticide resistances in P. absoluta from many regions where the pest was previously reported on tomato (Siqueira et al ., 2000; Marcela et al ., 2005; Astor and Scals, 2009; Reyes et al ., 2012; Roditakis et al ., 2013; Prasannakumar et al ., 2020). Extensive use of high potent diamide group in Greek on the tomato led to the development of 14-fold resistance for cyantraniliprole and 11-fold for flubendiamide resistance in P. absoluta (Roditakis et al ., 2015).…”

Section: Discussionmentioning

confidence: 99%

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Evidence-based insecticide resistance in South American tomato leaf miner,Phthorimaea absoluta(Meyrick) under laboratory selection

Prasannakumar

Jyothi

Prasadbabu

et al. 2023

Bull. Entomol. Res.

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The South American tomato moth, Phthorimaea absoluta (Meyrick), is one of the key pests of tomato in India. Since its report in 2014, chemical control has been the main means of tackling this pest, both in the open field and protected cultivation. Despite regular insecticidal sprays, many outbreaks were reported from major tomato-growing regions of South India during 2019–2020. A study was conducted to investigate the effect of insecticide resistance on biology, biochemical enzymes, and gene expression in various P. absoluta field populations viz., Bangalore, Kolar, Madurai, Salem, and Anantapur to commonly used insecticides such as flubendiamide, cyantraniliprole, and indoxacarb. Increased levels of insecticide resistance ratios (RR) were recorded in P. absoluta populations of different locations. A significant increase in cytochrome P450 monooxygenase (CYP/MFO) and esterase levels was noticed in the resistant population compared to susceptible one. Through molecular studies, we identified four new CYP genes viz., CYP248f (flubendiamide), CYP272c, CYP724c (cyantraniliprole), and CYP648i (indoxacarb). The expression levels of these genes significantly increased as the folds of resistance increased from G1 to G20 (generation), indicating involvement of the identified genes in insecticide resistance development in P. absoluta. In addition, the resistant populations showed decreased fecundity, increased larval development period, and adult longevity, resulting in more crop damage. The information generated in the present study thus helps in understanding the development of insecticide resistance by P. absoluta and suggests the farmers and researchers to use insecticides wisely by adopting insecticide resistance management as a strategy under integrated pest management.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Evidence-based insecticide resistance in South American tomato leaf miner,Phthorimaea absoluta(Meyrick) under laboratory selection

Prasannakumar

Jyothi

Prasadbabu

et al. 2023

Bull. Entomol. Res.

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“…Therefore the United States Food and Drug Administration (FDA) recognized botanical pesticides (essential oils) as safer than synthetic pesticides (Regnault‐Roger et al, 2012). Hence, currently, botanical‐based pesticides are gaining a lot of interest in organic farming (Prasannakumar et al, 2013; Prasannakumar, Rao, et al, 2021; Samada & Tambunan, 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of insecticidal properties of botanicals for sustainable management of sucking pests of horticultural crops

Prasannakumar

Rao

Jyothi

et al. 2022

J Applied Entomology

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Aphids, thrips, whiteflies, mealy bugs and mites could cause significant yield losses in horticultural crops. Many synthetic chemicals highly hazardous to non‐target organisms and the environment are in use in their management. Botanicals are ideal for safe sustainable pest management by keeping synthetic chemical use at a minimum. We studied the insecticidal properties of three botanicals viz., Annona squamosa, Ricinus communis and Sapindus mukorossi seed extracts against sucking pests viz., aphids (Aphis gossypii and Aphis craccivora) on okra (Abelmoschus esculentus) and bittergourd (Momordica charantia), thrips (Scirtothrips dorsalis) on chilli (Capsicum frutescens), whiteflies (Bemisia tabaci) on eggplant (Solanum melongena), mealy bugs (Maconellicoccus hirsutus) on betel vine (Piper betle) and mites (Tetranychus urticae) on eggplant (Solanum melongena) under laboratory conditions. The bioassay showed that A. squamosa seed extract has potent insecticidal properties on all sucking pests, except T. urticae. Though S. mukorossi seed extract exhibited no insecticidal property, had a significant acaricidal property. A. squamosa and S. mukorossi seed extracts will therefore be additional botanicals for use in organic farming for managing the sucking pests effectively.

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Evaluation of some leaf and seed extracts for their insecticidal properties against Aphis gossypii glover (hemiptera: aphididae)

Cited by 2 publications

References 0 publications

Evidence-based insecticide resistance in South American tomato leaf miner,Phthorimaea absoluta(Meyrick) under laboratory selection

Evidence-based insecticide resistance in South American tomato leaf miner,Phthorimaea absoluta(Meyrick) under laboratory selection

Evaluation of insecticidal properties of botanicals for sustainable management of sucking pests of horticultural crops

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