Microorganisms Associated with Feeding and from Various Organs of Nezara viridula12

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Abstract
The internal microflora transferred by feeding southern green stink bugs varied among insects which were field collected from soybean at defined stages of plant development. Thirty-five microorganisms transferred by feeding stink bugs were identified at least to genus. Two transferred fungi were identified as the causative agent of yeast spot disease of soybean, Nematospora coryli Peglion, but were transmitted by only 2 of 118 insects. Five of the 31 bacteria isolated (3-Corynebacterium and 2-Pseudomonas) produced leaf spots and vein necrosis when sprayed on seedling soybean. Over 90% of the isolated microorganisms produced an extracellular lipase which could contribute to the reduced oil content reported in stink bug damaged soybean. This study indicated that no more than a casual relationship exists between microbes and stink bugs. However, Nezara viridula (L.) has the potential to be a significant vector of both fungal and bacterial diseases of soybean.

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