浙江农业学报 ›› 2026, Vol. 38 ›› Issue (1): 95-104.DOI: 10.3969/j.issn.1004-1524.20250376

• 植物保护 • 上一篇    下一篇

爪哇虫草菌ZN-S21的培养特征及其对南亚果实蝇的室内杀虫活性

王璐瑶1(), 周湘怡1, 王国荣2, 陈梦丽1, 吴慧明1,*()   

  1. 1.浙江农林大学 现代农学院,浙江省作物病虫生物学与生态调控重点实验室,浙江 杭州 311300
    2.杭州市萧山区农业和林业技术推广中心,浙江 杭州 311699
  • 收稿日期:2025-05-14 出版日期:2026-01-25 发布日期:2026-02-11
  • 作者简介:吴慧明,E-mail:wuhm@zafu.edu.cn
    王璐瑶,研究方向为蔬菜害虫生物防治。E-mail:wangluyao0777@163.com
  • 通讯作者: 吴慧明
  • 基金资助:
    浙江省“三农九方”科技协作计划“揭榜挂帅”项目(2023SNJF036)

Cultural characteristics of Cordyceps javanica strain ZN-S21 and its indoor insecticidal activity against Bactrocera tau

WANG Luyao1(), ZHOU Xiangyi1, WANG Guorong2, CHEN Mengli1, WU Huiming1,*()   

  1. 1. Zhejiang Key Laboratory of Biology and Ecological Regulation of Crop Pathogens and Insects, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
    2. Agricultural and Forestry Technology Extension Center of Xiaoshan District, Hangzhou City, Hangzhou 311699, China
  • Received:2025-05-14 Online:2026-01-25 Published:2026-02-11
  • Contact: WU Huiming

摘要:

南亚果实蝇(Bactrocera tau)是一种重要检疫性害虫。为了明确田间分离得到的生防菌株ZN-S21对南亚果实蝇的防治潜力,本文通过形态学和多基因系统发生树对菌株ZN-S21的系统分类进行鉴定,研究了菌株ZN-S21的培养特征,并测定了不同环境条件下ZN-S21对南亚果实蝇三龄幼虫的室内杀虫活性。 结果显示: 菌株ZN-S21为爪哇虫草菌(Cordyceps javanica),在温度30 ℃、pH值为5.0的PSA培养基上菌落生长速率较快,产孢量较大。该菌在室内防治南亚果实蝇的最适条件为温度30 ℃、孢子浓度1×108 mL-1,土壤相对含水量90%,土壤pH值7.0。爪哇虫草菌ZN-S21对南亚果实蝇三龄幼虫具有较强的杀虫活性,在南亚果实蝇种群控制方面极具潜力。

关键词: 南亚果实蝇, 爪哇虫草菌, 杀虫活性, 温度, 土壤相对含水量

Abstract:

Bactrocera tau is a crucial quarantine pest. To clarify the biocontrol potential of the strain ZN-S21, which was isolated from the field, against B. tau, this study first identified the taxonomic status of strain ZN-S21 through morphological observations and multi-gene phylogenetic tree analysis. Subsequently, the cultural characteristics of strain ZN-S21 were systematically investigated, and its insecticidal activity against the 3rd instar larvae of B. tau under different environmental conditions was determined in the laboratory. The results showed that strain ZN-S21 was identified as Cordyceps javanica. When cultured on potato sucrose agar (PSA) medium, this strain exhibited a relatively fast colony growth rate and a high sporulation quantity under the conditions of 30 ℃ and pH value of 5.0. Additionally, the optimal conditions for the laboratory-based biocontrol of B. tau by C. javanica strain ZN-S21 were determined as follows: temperature of 30 ℃, spore concentration of 1×108 mL-1, soil relative water content of 90%, and soil pH value of 7.0. In conclusion, C. javanica strain ZN-S21 demonstrates strong insecticidal activity against the 3rd instar larvae of B. tau, thereby holding great potential for application in the population control of B. tau.

Key words: Bactrocera tau, Cordyceps javanica, insecticidal activity, temperature, soil relative water content

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