Publications

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one bacterial cell, one complete genome.while the bulk of the finished microbial genomes sequenced to date are derived from cultured bacterial and archaeal representatives, the vast majority of microorganisms elude current culturing attempts, severely limiting the ability to recover complete or even partial genomes from these environmental species. single cell genomics is a novel culture-independent approach, which enables access to the genetic material of an individual cell. no single cell genome has to our knowledge been closed and ...201020428247
seasonal abundance of draeculacephala minerva and other xylella fastidiosa vectors in california almond orchards and vineyards.almond leaf scorch (als) disease is caused by the bacterium xylella fastidiosa and transmitted by xylem-feeding insects. reports of increased incidence of als-diseased trees in california prompted surveys in three almond [prunus dulcis (mill.) d. a. webb]-growing regions, from june 2003 to september 2005, to determine insect vector species composition and abundance. for comparison, sampling in and near vineyards in the san joaquin valley, california, also was completed. sampling in or near almon ...201121510181
populations of xylella fastidiosa in plants required for transmission by an efficient vector.abstract xylella fastidiosa, a xylem-limited bacterium that causes pierce's disease (pd) of grapevine and other diseases, is transmitted efficiently by xylem-feeding leafhoppers. acquisition of a pd strain of x. fastidiosa by the blue-green sharpshooter (bgss) from five plant host species-grapevine (vitis vinifera), himalayan blackberry (rubus discolor), california mugwort (artemisia douglasiana), watergrass (echinochloa crus-galli), and bermuda grass (cynodon dactylon)-was tested at various tim ...199718945018
seasonal population dynamics of draeculacephala minerva (hemiptera: cicadellidae) and transmission of xylella fastidiosa.the grass sharpshooter, draeculacephala minerva ball (hemiptera: cicadellidae), is a very common and often abundant grass-feeding leafhopper in california. its population dynamics and ability to transmit xylella fastidiosa were monitored over a 2-yr period in california's san joaquin valley. collections of individuals from natural populations in irrigated pastures and alfalfa, medicago savita l. fields adjacent to x. fastidiosa-infected almond (prunus spp.) orchards indicated the occurrence of t ...200818767716
pierce's disease of grapevines: evidence for a bacterial etiology.a gram-positive, rod-shaped bacterium was isolated and grown in pure culture on artificial mediums from the leafhopper draeculacephala minerva ball which had fed on plants infected with pierce's disease. the bacterial culture was injected into uncontaminated leafhoppers which were than allowed to feed on healthy grapevines. after exposure to these leafhoppers, typical symptoms of pierce's disease developed; however, no symptoms developed on plants exposed to leafhoppers injected with sterile cul ...19744833261
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