Journal of Pest Science (2016) 89, 993-1001

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Beritah Mutune, Sunday Ekesi, Saliou Niassy, Viviene Matiru, Christine Bii and Nguya K. Maniania (2016)
Fungal endophytes as promising tools for the management of bean stem maggot Ophiomyia phaseoli on beans Phaseolus vulgaris
Journal of Pest Science 89 (4), 993-1001
Abstract: Common bean, Phaseolus vulgaris, is an important food and cash crop in Africa. Its production is seriously affected by the bean stem maggot (BSM), Ophiomyia spp., which attacks seedlings. We evaluated the ability of eleven fungal isolates to colonize bean plants and the effects of inoculation on BSM feeding and oviposition, pupation, and adult emergence. All fungal isolates were able to colonize different bean plant parts (root, stem, and leaves), except isolates of Metarhizium anisopliae and Beauveria bassiana isolate ICIPE 273. Colonization was generally higher on the roots than on the stem and leaves and varied significantly between the fungal isolates. BSM feeding and oviposition were significantly reduced in all the fungus-inoculated bean plants which in turn affected pupation and adult emergence as compared to the control. Metarhizium anisopliae ICIPE 20 outperformed the other isolates in interfering with BSM lifecycle. Although M. anisopliae ICIPE 78 recorded a high number of punctures similar to the control, a significant reduction in the number of pupae and adult emergence was observed, suggesting possible BSM growth inhibition. This study clearly demonstrates that fungal endophytes can be considered as promising tools for the management of BSM in East Africa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Nguya K. Maniania, Sunday Ekesi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Ophiomyia phaseoli Beans (Phaseolus) Kenya
Metarhizium anisopliae (entomopathogen) Ophiomyia phaseoli Beans (Phaseolus) Kenya
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