Suitability of five plant species extracts for their compatibility with indigenous Beauveria bassiana against Aphis gossypii Glov. (Hemiptera: Aphididae)

Abstract

Background The cotton aphid, Aphis gossypii Glov. (Hemiptera: Aphididae), is a major insect pest on a wide range of plants that causes high damage and transmits plant viruses. This study was carried out to evaluate an indigenous isolate, Beauveria bassiana (Bb), and extracts of 5 plant species: Psiadia penninervia, Pulicaria crispa, Euryops arabicus, Salvia officinalis, and Ochradenus baccatus against A. gossypii, as individual and combined treatments to estimate their compatibility under laboratory conditions. Also, the antifungal activity of these plant extracts against B. bassiana was evaluated. Results LC50 value was 8.64 × 104 spores/ml of Bb against A. gossypii, while LC50 values of the tested 5 plant extracts on A. gossypii were 103.64, 879.92, 747.90, 783.28, and 262.42 μg/ml for P. penninervia, P. crispa, E. arabicus, S. officinalis, and O. baccatus, respectively. Both P. penninervia and O. baccatus extracts had the highest antifungal activities against Bb and were significantly different from the other 3 plant extracts. After 24 h of treatment with the combination of Bb and each extract, no effect for these combinations on A. gossypii mortality was recorded. Meanwhile, 5 days after treatment, the combined treatments between Bb and each plant extract achieved a significant increase in mortality than that of the single treatment with Bb or plant extract, except for P. penninervia extract, which did not achieve a significant mortality increase when combined with B. bassiana than that of its single treatment. Conclusion P. penninervia extract was not compatible with B. bassiana, but the other tested 4 plant extracts were compatible with B. bassiana. These 4 plant extracts could be used to control aphids in combinations with B. bassiana. Further laboratory and field investigations are needed to examine the effects of these plant extracts on other insect pests or associated beneficial insects.

Effect of Combination of Oleander Leaf Extract (Nerium oleander L.) With Neem Leaf (Azadiracta indica A. Juss) on Mortality Golden Snail (Pomaceae canaliculata L.)

“…By producing secondary metabolites including phenols, quinone flavonoids, terpenoids, alkaloids, and tannins, plants defend themselves against herbivores and microorganisms (Sayed et al, 2021). Botanical pesticides are pesticides derived from plant-based ingredients that are easily decomposed in nature, so they are safe for humans and do not pollute the environment (Tripathy et al, 2022).…”

Chitinase of Trichoderma longibrachiatum for control of Aphis gossypii in cotton plants

“…Besides this, the high input cost of insecticides and all legal restrictions have focused on using an alternative approach to control insect pests 11 , 12 . In the previous years, an alternative bio-control method is in specifically, the use of entomopathogens has emerged 13 , 14 . Entomopathogenic fungi [EPF] have exclusive characterisations that enable them to be the potential bio-control agents of insect pests.…”

Bazı bitkisel yağların şeftali yeşil yaprak biti Myzus persicae (Sulzer, 1776) (Hemiptera: Aphididae)’nin yaşam çizelgesi parameterleri üzerindeki etkileri

“…These compounds are non-lethal to predators, parasitoids and mammals (Scott et al, 2003). In recent years, there have been many studies on the insecticidal activities of essential oils and their components in plants (Isman & Miresmailli, 2011;Ntalli & Menkissoglu-Spiroudi, 2011;Regnault-Roger et al, 2012;Miresmailli & Isman, 2014;Pavela & Benelli, 2016;Chaubey, 2019;Feng et al, 2020;Gaur & Kumar, 2020;Sayed et al, 2021). According to studies conducted in recent years, plant species belonging to 60 families with insecticidal effects can be used as biopesticides (Sukh & Opender, 2017;Isman, 2006).…”