Impact of biorational pesticides and response of annexin gene expression in tomato (Solanum lycopersicum) and capsicum (Capsicum annum L.) in biotic stress management under greenhouse condition
Year: 2015
Type: article
Abstract: Protected cultivation of high value cash crops such as capsicum and tomato is gaining momentumin recent times. Among various diseases and pests; bacterial wilt, thrips and root knot nematodesare recurrent threats to its production. Biorational pesticides such as agricultural spray oil andazadirachtin are more acceptable than conventional insecticides as they are known to be sufficientlyactive against pest populations and are relatively safer to beneficial organisms. The experiment wasconducted on relative efficacy of agricultural spray oil, azadirachtin and combination of both (1%)for the management of these three different types of biotic stresses on tomato and capsicum underprotected cultivation. Results revealed that in all the tested insecticides, the integrated treatmentswere most effective in comparison to the individual interventions. To investigate common signalingmechanism of response towards these stressors, we carried out RNA expression analysis of anannexin gene. Annexins belong to a family of membrane and calcium (Ca2+) binding proteins whichcan characteristically bind membrane phospholipids in a reversible, Ca2+-dependent and independentmanner. Here we report that the expression of annexin is induced in response to three biotic stresstreatments of the crops viz bacterial wilt, thrip infestation and root knot nematode infection. Resultsshow potential evidence that modulation of a single signaling protein can be useful in managementof three different and common biotic stressors in tomato and capsicum.
Source: Annals of Agricultural Research
Authors: Sikha Deka, Sharmistha Barthakur
Language: English
Subfield: Insect Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2258667331