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Pathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava

dc.contributor.authorAgboton, B.V.
dc.contributor.authorHanna, R.
dc.contributor.authorHountondji, F.C.C.
dc.contributor.authorTiedemann, A. von
dc.date.accessioned2019-12-04T11:11:37Z
dc.date.available2019-12-04T11:11:37Z
dc.date.issued2009
dc.identifier.citationAgboton, B.V., Hanna, R., Hountondji, F.C.C. & Von Tiedemann, A. (2009). Pathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava. Journal of Applied Entomology, 155(9‐10), 651-658.
dc.identifier.issn0931-2048
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2467
dc.description.abstractNeozygites tanajoaeis a host-specific acaropathogen introduced in the late1990s from Brazil into cassava fields in West Africa for biocontrol ofthe cassava green mite (Mononychellus tanajoa). Local African isolates ofN. tanajoaeare morphologically similar to introduced Brazilian strainsbut the two origins can be distinguished by diagnostic PCR. In this studyit was explored whether differential traits in acaropathogenic perfor-mance and host specificity exist between Brazilian and African isolates.Pathogenicity and host specificity of two Brazilian and two Africanisolates ofN. tanajoaewere compared in leaf discs laboratory bioassaysor on whole cassava plants in the greenhouse by exposing adult femalemites to inoculum delivered fromN. tanajoaeinfested mite mummies.The results show that all fourN. tanajoaeisolates caused significant mor-tality ofM. tanajoa,both on leaf discs and on whole plants. However, onleaf discs the Brazilian isolate collected directly from Alto Alegre inBrazil (Brazil–Brazil isolate) caused a significantly higher mortality(80%) than the Brazilian isolate collected about 9 years post-releasefrom a field in Adjohoun (Brazil–Benin isolate) (61.3%). The two Afri-can isolates collected in Benin and Tanzania caused a mortality similarto the African–Brazilian isolate (62.3% and 61.3% respectively).Onwhole cassava plants, the four fungal isolates did not show any signifi-cant differences in incidence ofM. tanajoainfection. The host specificitystudy was conducted on leaf discs against a collection of mite speciestypically associated with cassava plants in Africa,Typhlodromalus aripo,Euseius fustis,Tetranychus urticaeandOligonychus gossypii. It demonstratedthat the African and Brazilian isolates ofN. tanajoaehad similar hostspecificity forM. tanajoa.
dc.description.sponsorshipGerman Academic Exchange Service
dc.description.sponsorshipInternational Fund for Agricultural Development
dc.format.extent651-658
dc.language.isoen
dc.subjectNeozygites Tanajoae
dc.subjectMononychellus Tanajoa
dc.subjectTyphlodromalus Aripo
dc.subjectEuseius Fustis
dc.subjectTetranychus Urticae
dc.subjectOligonychus Gossypii
dc.subjectPathogen
dc.subjectAcaropathogen
dc.subjectMolecular
dc.titlePathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationGeorg-August-Universität Göttingen
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAcp
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.regionEurope
cg.coverage.countryGermany
cg.coverage.countryBenin
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectDisease Control
cg.iitasubjectCassava
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Production
cg.iitasubjectPests Of Plants
cg.journalJournal of Applied Entomology
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid93218
cg.identifier.doihttps://dx.doi.org/10.1111/j.1439-0418.2009.01415.x


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