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dc.contributor.authorBancole, W.B.A.
dc.contributor.authorLaing, M.
dc.contributor.authorYobo, K.S.
dc.contributor.authorTogola, A.
dc.contributor.authorSaeed, M.B.
dc.date.accessioned2021-11-29T10:56:54Z
dc.date.available2021-11-29T10:56:54Z
dc.date.issued2021
dc.identifier.citationBancole, W.B.A., Laing, M.D., Yobo, K.S., Togola, A. & Saeed, M.B. (2021). Investigating the endophytic competency and pathogenicity efficacy of Beauveria bassiana isolates against Chilo partellus Swinhoe. International Journal of Tropical Insect Science, 1-13.
dc.identifier.issn1742-7584
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7290
dc.description.abstractSorghum bicolor L. Moench (Poaceae) is a cereal crop grown worldwide and playing an important role in human nutrition as well as feed for livestock. Lepidopteran stem borers are the most economically important insect pests that affect sorghum production and their management relies on the use of insecticide chemicals that have adverse effects on humans and biodiversity. The objective of this study was to investigate the endophytytic and pathogenic properties of Beauveria bassiana (Balsamo) Vuillemin as environmentally friendly, ecologically sound and sustainable bioncontrol method against Chilo partellus Swinhoe, one of the key stemborer of Sorghum in South Africa. In this study, 20 strains of Beauveria bassiana (Balsamo) Vuillemin were tested on sorghum cultivars Sugargraze AS 18, AS 79, AS 71 and PAN 8816 initially infested with Chilo partellus Swinhoe at 3rd instar larval stage. For the purpose, various strains of B. bassiana were inoculated in sorghum cultivars as foliar spray or seed treatment inoculum. At 30 and 60 days after the inoculation, the roots, stems and leaves of the cultivars were sampled to evaluate the endophytic property of each B. bassiana strain. Moreover, the 3rd instar larvae of C. partellus were fed with harvested stems previously colonized by the five best strains of B. bassiana to test their pathogenicity. Some 3rd instar larvae were fed with untreated stems (check). On both treated and untreated plants, number of dead larva was counted and recorded every seven days for 28 days interval. Results showed good endophytic ability of five B. bassiana strains (Bb3, Bb4, Bb10, Bb21 and Bb35) in the sorghum plants with varying degree of colonization and persistence in plant tissues, regardless the inoculation methods. However, colonization resulted from seed treatments were higher than that from foliar spray. The untreated plants did not show any presence of B. bassiana strains. Significant main effects (mostly P<0.0001) and interaction effects were observed between the application methods, strains, cultivars and date after inoculation. The endophytic strains (B3, B10 and B35) were highly pathogenic, recording up to 80% of larval mortality at 28 days after treatment. Five strains of B. bassiana (Bb3, Bb4, Bb10, Bb21 and Bb35) showed both endophytic colonization in S. bicolor and entomopathogenic activity on C. partellus, and can be used as potential systemic biocontrol agents against the spotted stem borer.
dc.description.sponsorshipOrganization for Women in Science for Developing world
dc.description.sponsorshipPlant Health Products (PHP), South Africa
dc.format.extent1-13
dc.language.isoen
dc.subjectBeauveria Bassiana
dc.subjectEndophytes
dc.subjectBiological Control
dc.subjectChilo Partellus
dc.titleInvestigating the endophytic competency and pathogenicity efficacy of Beauveria bassiana isolates against Chilo partellus Swinhoe
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.affiliationUniversity of KwaZulu- Natal
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidBANCOLE:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectBiodiversity
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalInternational Journal of Tropical Insect Science
cg.notesPublished online: 07 Oct 2021
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s42690-021-00641-1
cg.iitaauthor.identifierAbou TOGOLA: 0000-0001-6155-8292
cg.futureupdate.requiredNo
cg.contributor.acknowledgementsThis study were made possible by a grant from the Organization for Women in Science for Developing world (OWSD) and research funds from Plant Health Products (PHP), South Africa.


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