The synergistic effects of entomopathogenic fungus Cordyceps javanica and parasitoid Tamarixia radiata in Asian citrus psyllid management

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-04-05 DOI:10.1016/j.cropro.2025.107234

Pei-Ping Xu , Xin-Yi Chen , Jia-Rui Wang , Zi-Tong Lu , Marguerite Mukangango , Wen-Sang , Bao-Li Qiu , Li-He Zhang , Shaukat Ali

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引用次数: 0

Abstract

The Asian citrus psyllid (ACP), Diaphorina citri, is the primary insect vector of Candidatus Liberibacter asiaticus (CLas), which causes Huanglongbing (HLB) in citrus plants. Effective control of D. citri is crucial to preventing the spread of HLB in orchards. Biological control is a key component in Integrated Pest Management (IPM) programs aimed at reducing the use of synthetic chemical insecticides. This study evaluates the compatibility of the entomopathogenic fungus Cordyceps javanica (GZQ-1 strain) and the parasitoid Tamarixia radiata, dominant in controlling D. citri, to develop an effective pest management strategy and model for synergistic control. Our assessment showed that the survival rate of T. radiata was higher than that of D. citri when both were exposed to the same concentration of C. javanica, indicating higher toxicity of C. javanica to D. citri. However, the infected T. radiata exhibited reduced the search effect and parasitism. Five biological control methods were tested. Integrating interval period, pest mortality at different instar stages, and parasitoid population, the optimal strategy was determined to be releasing T. radiata within 6-12 days after spraying C. javanica during the initial flourishing period of the D. citri population. This comprehensive assessment of the safety and effectiveness of entomopathogenic fungi and natural enemies provides a basis for their synergistic application in IPM programs.

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昆虫病原真菌爪哇虫草和拟寄生虫柽柳在柑桔木虱防治中的协同作用

柑橘木虱（Diaphorina citri）是引起柑橘黄龙病的亚洲解放候选菌（Candidatus Liberibacter asiaticus, CLas）的主要昆虫媒介。有效防治柑橘木枯病是防止柑橘木枯病在果园蔓延的关键。生物防治是害虫综合治理（IPM）项目的关键组成部分，旨在减少合成化学杀虫剂的使用。本研究旨在评价昆虫病原真菌爪哇虫草（Cordyceps javanica, GZQ-1）与柑桔害虫优势寄生物辐射柽柳（Tamarixia radiata）的亲和性，以建立有效的害虫治理策略和协同防治模式。结果表明，当暴露于相同浓度的爪黄菌时，辐射田鼠的存活率高于柑橘田鼠，表明爪黄菌对柑橘田鼠具有更高的毒性。但侵染后的辐射蛾的搜索效应和寄生率均有所降低。试验了5种生物防治方法。综合间隔期、不同龄期病虫害死亡率和寄生蜂种群数量，确定在柑桔种群繁盛初期，喷施爪哇木后6 ~ 12 d内释放辐射螟的最佳策略。对昆虫病原真菌和天敌的安全性和有效性进行综合评价，为它们在IPM项目中的协同应用提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.