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Characterization of mycotoxins from entomopathogenic fungi (Cordyceps fumosorosea) and their toxic effects to the development of asian citrus psyllid reared on healthy and diseased citrus plants

文献类型： 外文期刊

作者： Qasim, Muhammad 1 ; Ul Islam, Saif 1 ; Islam, Waqar 3 ; Noman, Ali 4 ; Khan, Khalid Ali 5 ; Hafeez, Muhammad 6 ; Hussa 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Plant Protect, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou 350002, Peoples R China

2.Zhejiang Univ, Inst Insect Sci, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Hangzhou 310058, Peoples R China

3.Fujian Normal Univ, Coll Geog, Fuzhou 350002, Peoples R China

4.Govt Coll Univ, Dept Bot, Faisalabad 38040, Pakistan

5.King Khalid Univ, Unit Bee Res & Honey Prod, Res Ctr Adv Mat Sci RCAMS, Biol Dept,Fac Sci, Abha 61413, Saudi Arabia

6.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Peoples R China

7.Ayub Agr Res Inst, Entomol Res Inst, Faisalabad 38850, Pakistan

8.Sylhet Agr Univ, Fac Agr, Sylhet 3300, Bangladesh

9.Int Ctr Insect Physiol & Ecol, Dept Plant Hlth, POB 30772-00100, Nairobi, Kenya

10.Univ Agr Faisalabad, Dept Entomol, Faisalabad 38040, Pakistan

11.Ghazi Univ, Dept Plant Protect, Dg Khan 32250, Pakistan

12.Bacha Khan Univ Charsadda, Dept Agr, Charsadda 24420, Khyber Pakhtunk, Pakistan

关键词： Bioactive compounds; Diaphorina citri; Entomopathogenic fungi; Fungal extraction; Liquid chromatography

期刊名称：TOXICON （ 影响因子：3.033； 五年影响因子：2.689 ）

ISSN： 0041-0101

年卷期： 2020 年 188 卷

页码：

收录情况： SCI

摘要： Entomopathogenic fungi (EPF) produce multiple mycotoxins, which play an essential role in improving fungal pathogenesis and virulence. To characterize various mycotoxins from the crude methanol extract of Cordyceps fumosorosea, a major EPF against various insect pests, we performed ultra-performance liquid chromatography coupled to quadrupole time of flight mass spectrometer (UPLC QTOF MS) technique, and all compounds were identified through molecular mass and formulae. Bassianolide was assessed against the nymphs and adults of Dicuphorina citri reared on healthy and Huanglongbing (HLB)-diseased Citrus spp. Plants under laboratory conditions. Overall, 17 compounds were identified from the fungal extract and categorized into three groups, i.e. (1) alkaloids (Isariotins A C), (2) peptides (Bassianolide, Beauvemlides, Beauvericin A, Isaridins and Destruxin E) and (3) polyketide (Tenuipyrone). The detected beauverolides (B, C, F, I, Ja) from C. fumosorosea were novel mycotoxins, and their detection intensity was the highest in the fungal extract. Furthermore, bassianolide caused more than 70% and 80% mortality of D. citri nymphs and adults after two days of application, respectively. After three days of chemical application, all nymphal and adult populations of D. citri were killed by bassianolide. However, the mortality rates of both populations, nymphs and adults, were higher on HLB-diseased plants as compared to healthy plants.

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