A New Bacterial Disease of Mung Bean and Cowpea for Australia.

Wood, Barbara; Easdown, W.

doi:10.1071/app9900016

Cited by 25 publications

(26 citation statements)

References 10 publications

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“…The best-studied pathovar, C. flaccumfaciens pv. flaccumfaciens , is the causal agent of bacterial wilt in dry beans worldwide with reports on five continents (Wood and Easdown, 1990; Harveson et al, 2006; EPPO, 2011; Soares et al, 2013; Osdaghi et al, 2015a). The disease harbors a high degree of genetic and phenotypic diversity (Hedges, 1926; Conner et al, 2008) even within a single host (Agarkova et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Evidence for Ecological Flexibility in the Cosmopolitan Genus Curtobacterium

et al. 2016

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Assigning ecological roles to bacterial taxa remains imperative to understanding how microbial communities will respond to changing environmental conditions. Here we analyze the genus Curtobacterium, as it was found to be the most abundant taxon in a leaf litter community in southern California. Traditional characterization of this taxon predominantly associates it as the causal pathogen in the agricultural crops of dry beans. Therefore, we sought to investigate whether the abundance of this genus was because of its role as a plant pathogen or another ecological role. By collating >24,000 16S rRNA sequences with 120 genomes across the Microbacteriaceae family, we show that Curtobacterium has a global distribution with a predominant presence in soil ecosystems. Moreover, this genus harbors a high diversity of genomic potential for the degradation of carbohydrates, specifically with regards to structural polysaccharides. We conclude that Curtobacterium may be responsible for the degradation of organic matter within litter communities.

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Section: Introductionmentioning

confidence: 99%

Evidence for Ecological Flexibility in the Cosmopolitan Genus Curtobacterium

et al. 2016

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“…Bacterial wilt disease caused by Curtobacterium flaccumfaciens pv. flaccumfaciens (Hedges) Collins and Jones ( Cff ) is one of the most destructive bacterial diseases in legumes (Wood and Easdown ; Tegli et al. ; González et al.…”

Section: Introductionmentioning

confidence: 99%

First Report of Curtobacterium flaccumfaciens pv. flaccumfaciens Causing Cowpea Bacterial Wilt in Iran

Osdaghi

Sardrood

Bavi

et al. 2014

Journal of Phytopathology

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During surveys in cowpea fields of Marand County, East Azerbaijan province, Iran, in the summer of 2013, a suspected bacterial disease was observed on cowpea leaves as tan spots and interveinal necrotic lesions surrounded by chlorotic margins. The disease was of high incidence where some fields had been fully destroyed and severity of the disease in some fields had reached up to 70%. Gram‐positive, yellow‐pigmented, coryneform bacteria were isolated from infected leaves. Pathogenicity of isolates was confirmed on 20‐day‐old cowpea (cv. Khoy) plants, and they were identified as Curtobacterium flaccumfaciens pv. flaccumfaciens based on biochemical test results confirmed using specific PCR primers. This is the first report of C. flaccumfaciens pv. flaccumfaciens, the causal agent of cowpea bacterial wilt in Iran.

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“…is incited by CFF, but it is considered a minor disease of this crop, and Hartmann et al (1999) indicated that Phaseolus vulgaris is the principle host of this pathogen. Mung bean (Tripepi and George 1991) and cowpea are susceptible to CFF with the most prominent symptom being leaf scorching, but stunting and other systemic symptoms also have been observed on these two hosts (Wood and Easdown 1990). Other hosts of CFF include adzuki bean (Vigna angularis (Willd.)…”

Section: Host Rangementioning

confidence: 98%

“…Halluka et al (1978) determined that CFF populations were much higher in susceptible bean cultivars than in resistant cultivars. Wood and Easdown (1990) demonstrated that cultural filtrates that were free of CFF cells could cause wilting in mung bean and cowpea plants indicating the pathogen produced a phytotoxin that was at least partially responsible for the wilting observed in infected plants.…”

Section: Epidemiologymentioning

confidence: 98%

Resurgence of bacterial wilt of common bean in North America

Huang

Erickson

Balasubramanian

et al. 2009

Canadian Journal of Plant Pathology

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Bacterial wilt, caused by Curtobacterium flaccumfaciens pv. flaccumfaciens (CFF), was a serious disease of common bean (Phaseolus vulgaris) in the United States in the early 1970s but was not reported for two decades after that time. Following this absence, the disease was reported again in the United States in North Dakota in 1995 and in Colorado, Nebraska, and Wyoming from 2004. In addition to the three coloured variants (yellow, orange and purple) of CFF reported in the United States in 1970s, a new pink variant of the pathogen was discovered in Nebraska in 2008. In Canada, the disease was reported in central Canada (Ontario) in the 1950s. The yellow and orange variants were found in western Canada in 2002, and the purple variant was found in 2006. These recent reports indicate a resurgence of bacterial wilt of bean in North America. The discovery of new variants suggests that the pathogen may be evolving. This minireview examines the resurgence of bacterial wilt of bean in North America, as well as its world distribution, symptoms, host range, and recent research progress in identification and detection, epidemiology, impacts, and methods of control of this disease. Résumé: Le flétrissement bactérien, causé par Curtobacterium flaccumfaciens pv. flaccumfaciens (CFF), était une maladie grave du haricot commun (Phaseolus vulgaris) aux États-Unis au début des années 1970, mais s'est faite plutôt discrète durant les deux décennies suivantes. Après cette absence, la maladie a été de nouveau signalée au Dakota du Nord en 1995 ainsi qu'au Colorado, au Nebraska et au Wyoming de 2004 à 2007. En plus des trois variantes chromatiques (jaune, orangé et pourpre) de la bactérie CFF rapportées aux États-Unis dans les années 70, une nouvelle variante rose de l'agent pathogène a été découverte au Nebraska en 2008. Au Canada, la maladie a été signalée en Ontario dans les années 50. Les variantes jaunes et orangées ont été trouvées dans l'Ouest canadien en 2002 et la pourpre y a été détectée en 2006. Ces récentes mentions indiquent qu'il y a résurgence du flétrissement bactérien chez le haricot en Amérique du Nord. La découverte de nouvelles variantes suggère que l'agent pathogène peut être en train d'évoluer. Ce minibulletin examine la résurgence du flétrissement bactérien chez le haricot en Amérique du Nord ainsi que sa répartition mondiale, ses symptômes, son spectre d'hôte et les dernières avancées des recherches relatives à l'identification et à la détection, à l'épidémiologie, aux répercussions de même qu'aux méthodes de lutte. Mots-clés : haricot, Phaseolus vulgaris, flétrissement bactérien, Curtobacterium flaccumfaciens pv. flaccumfaciens, biologie, épidémiologie, lutte, résistance aux maladies. Huang et al.: bacterial wilt on bean / Curtobacterium / mini-review 300

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A New Bacterial Disease of Mung Bean and Cowpea for Australia.

Cited by 25 publications

References 10 publications

Evidence for Ecological Flexibility in the Cosmopolitan Genus Curtobacterium

Evidence for Ecological Flexibility in the Cosmopolitan Genus Curtobacterium

First Report of Curtobacterium flaccumfaciens pv. flaccumfaciens Causing Cowpea Bacterial Wilt in Iran

Resurgence of bacterial wilt of common bean in North America

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