Identification of entomopathogenic fungus Metarhizium rileyi infested in fall armyworm in the cornfield of Korea, and evaluation of its virulence

Rajendra Acharya; Ji Youn Lee; Hwal Su Hwang; Min Ki Kim; Seung Yeol Lee; Hee Young Jung; Ikju Park; Kyeong Yeoll Lee

doi:10.1002/arch.21965

Identification of entomopathogenic fungus Metarhizium rileyi infested in fall armyworm in the cornfield of Korea, and evaluation of its virulence

Rajendra Acharya, Ji Youn Lee, Hwal Su Hwang, Min Ki Kim, Seung Yeol Lee, Hee Young Jung, Ikju Park, Kyeong Yeoll Lee

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The fall armyworm (FAW) Spodoptera frugiperda is an important invasive pest in Africa and Asia. It is a polyphagous pest with at least 353 recorded host plant species, including corn. Chemical control of this pest is unsuccessful because of a developed resistance and harmful effects on the environment. Entomopathogenic fungi are potential biological control agents for FAW. In this study, the native strain of Metarhizium rileyi (KNU-Ye-1), collected from a cornfield at Yeongcheon, Korea, was identified by morphological and molecular characterization. The susceptibility of the fourth-instar larvae of FAW to the native strain M. rileyi was examined in the laboratory. The results showed that the Korean strain of M. rileyi (KNU-Ye-1) was highly virulent to FAW larvae, causing 89% mortality 7 days posttreatment. Therefore, M. rileyi (KNU-Ye-1) identified in this study is highly valuable for the biological control of FAW in the field.

Original language	English
Article number	e21965
Journal	Archives of Insect Biochemistry and Physiology
Volume	111
Issue number	4
DOIs	https://doi.org/10.1002/arch.21965
State	Published - Dec 2022

Keywords

biological control
climate change
invasive species
natural enemy
Spodoptera frugiperda

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/arch.21965

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title = "Identification of entomopathogenic fungus Metarhizium rileyi infested in fall armyworm in the cornfield of Korea, and evaluation of its virulence",

abstract = "The fall armyworm (FAW) Spodoptera frugiperda is an important invasive pest in Africa and Asia. It is a polyphagous pest with at least 353 recorded host plant species, including corn. Chemical control of this pest is unsuccessful because of a developed resistance and harmful effects on the environment. Entomopathogenic fungi are potential biological control agents for FAW. In this study, the native strain of Metarhizium rileyi (KNU-Ye-1), collected from a cornfield at Yeongcheon, Korea, was identified by morphological and molecular characterization. The susceptibility of the fourth-instar larvae of FAW to the native strain M. rileyi was examined in the laboratory. The results showed that the Korean strain of M. rileyi (KNU-Ye-1) was highly virulent to FAW larvae, causing 89% mortality 7 days posttreatment. Therefore, M. rileyi (KNU-Ye-1) identified in this study is highly valuable for the biological control of FAW in the field.",

keywords = "biological control, climate change, invasive species, natural enemy, Spodoptera frugiperda",

author = "Rajendra Acharya and Lee, {Ji Youn} and Hwang, {Hwal Su} and Kim, {Min Ki} and Lee, {Seung Yeol} and Jung, {Hee Young} and Ikju Park and Lee, {Kyeong Yeoll}",

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year = "2022",

month = dec,

doi = "10.1002/arch.21965",

language = "English",

volume = "111",

journal = "Archives of Insect Biochemistry and Physiology",

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T1 - Identification of entomopathogenic fungus Metarhizium rileyi infested in fall armyworm in the cornfield of Korea, and evaluation of its virulence

AU - Acharya, Rajendra

AU - Lee, Ji Youn

AU - Hwang, Hwal Su

AU - Kim, Min Ki

AU - Lee, Seung Yeol

AU - Jung, Hee Young

AU - Park, Ikju

AU - Lee, Kyeong Yeoll

PY - 2022/12

Y1 - 2022/12

N2 - The fall armyworm (FAW) Spodoptera frugiperda is an important invasive pest in Africa and Asia. It is a polyphagous pest with at least 353 recorded host plant species, including corn. Chemical control of this pest is unsuccessful because of a developed resistance and harmful effects on the environment. Entomopathogenic fungi are potential biological control agents for FAW. In this study, the native strain of Metarhizium rileyi (KNU-Ye-1), collected from a cornfield at Yeongcheon, Korea, was identified by morphological and molecular characterization. The susceptibility of the fourth-instar larvae of FAW to the native strain M. rileyi was examined in the laboratory. The results showed that the Korean strain of M. rileyi (KNU-Ye-1) was highly virulent to FAW larvae, causing 89% mortality 7 days posttreatment. Therefore, M. rileyi (KNU-Ye-1) identified in this study is highly valuable for the biological control of FAW in the field.

AB - The fall armyworm (FAW) Spodoptera frugiperda is an important invasive pest in Africa and Asia. It is a polyphagous pest with at least 353 recorded host plant species, including corn. Chemical control of this pest is unsuccessful because of a developed resistance and harmful effects on the environment. Entomopathogenic fungi are potential biological control agents for FAW. In this study, the native strain of Metarhizium rileyi (KNU-Ye-1), collected from a cornfield at Yeongcheon, Korea, was identified by morphological and molecular characterization. The susceptibility of the fourth-instar larvae of FAW to the native strain M. rileyi was examined in the laboratory. The results showed that the Korean strain of M. rileyi (KNU-Ye-1) was highly virulent to FAW larvae, causing 89% mortality 7 days posttreatment. Therefore, M. rileyi (KNU-Ye-1) identified in this study is highly valuable for the biological control of FAW in the field.

KW - biological control

KW - climate change

KW - invasive species

KW - natural enemy

KW - Spodoptera frugiperda

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U2 - 10.1002/arch.21965

DO - 10.1002/arch.21965

M3 - Article

C2 - 36053552

AN - SCOPUS:85137352868

SN - 0739-4462

VL - 111

JO - Archives of Insect Biochemistry and Physiology

JF - Archives of Insect Biochemistry and Physiology

IS - 4

M1 - e21965

ER -

Identification of entomopathogenic fungus Metarhizium rileyi infested in fall armyworm in the cornfield of Korea, and evaluation of its virulence

Abstract

Keywords

UN SDGs

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