Increasing the survival and efficacy of entomopathogenic nematodes on exposed surfaces by Pickering emulsion formulations offers new venue for foliar pest management.

Autor: Ramakrishnan J; Department of Plant Pathology and Weed Research, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel; Department of Agroecology and Plant Health, The Robert H. Smith Faculty of Agriculture, Food & Environment the Hebrew University of Jerusalem, Rehovot 7610001, Israel., Salame L; Department of Plant Pathology and Weed Research, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel., Mani KA; Department of Food Science, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel; Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel., Feldbaum R; Department of Food Science, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel., Karavani E; Department of Vegetable Research, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel., Mechrez G; Department of Food Science, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel., Glazer I; Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization, Volcani Institute, Rishon LeZion 7505101, Israel., Ment D; Department of Plant Pathology and Weed Research, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel. Electronic address: danam@volcani.agri.gov.il.
Jazyk: angličtina
Zdroj: Journal of invertebrate pathology [J Invertebr Pathol] 2023 Jul; Vol. 199, pp. 107938. Date of Electronic Publication: 2023 Jun 01.
DOI: 10.1016/j.jip.2023.107938
Abstrakt: Formulation technology has been the primordial focus to improve the low viability and erratic infectivity of entomopathogenic nematodes (EPNs) for foliar application. Adaptability to the fluctuating environment is a key trait in ensuring the survival and efficacy of EPNs. Hence, tailoring formulations towards EPNs foliar applications would effectively deliver consistent and reliable results for above-ground applications. EPNs survival and activity were characterized in novel Pickering emulsion post-application in planta cotton foliage. Two different types of novel formulations, Titanium Pickering emulsion (TPE) and Silica Pickering emulsion Gel (SPEG), were tailored for EPNs foliar applications. We report an extension of survival and infectivity to 96 hrs under controlled conditions by SPEG formulations for survival of IJ's on cotton foliage. In addition, survival of IJs (LT 50 ) was extended from 14hrs in water to > 80 hrs and > 40 hrs by SPEG and TPE respectively. SPEG accounted for the slowest decrease of live IJs per surface area in comparison to TPE and control samples over time, exhibiting a 6-fold increase at 48 hrs. Under extreme conditions, survival and efficacy were extended for 8hrs in SPEG compared to merely 2hrs in control. Potential implications and possible mechanisms of protection are discussed.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: