The bacterium Xanthomonas

Swings, Jean; Vauterin, Luc; Kersters, Karel

doi:10.1007/978-94-011-1526-1_2

Cited by 51 publications

(51 citation statements)

References 150 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a characteristic of canker symptomalogy following Xcvi colonization ( Figure 2C, D). Observations at 3000× and 5000× magnification indicated the preence of 1.9-2.3 µm long and 0.6-0.8 µm wide bacilliform cells ( Figure 2E, F), a typical morphological characteristic of the genus Xanthomonas as described by Swings et al (1993) and Araujo et al (2004). This was evidence of bacterial colonization and also confirmed the identity of Xcvi using immune-staining techniques.…”

Section: Resultssupporting

confidence: 58%

Detection and cellular localization of Xanthomonas campestris pv. viticola in seeds of commercial 'Red Globe' grapes

Tostes

Araujo

Farias

et al. 2014

Trop. plant pathol.

View full text Add to dashboard Cite

Commercial grapevine fruit (Vitis vinifera) of the Red Globe variety were collected in vineyards from Vale do São Francisco lower basin, an area of occurrence of grapevine bacterial canker. Seeds were extracted, classified as symptomatic or asymptomatic and processed in order to be observed under light (LM) and scanning electron microscopy (SEM) along with silver-enhanced immunogold labeling, to allow bacterial detection using a policlonal antibody against Xanthomonas campestris pv. viticola (Xcvi), etiological agent of the disease. The seed samples showed bacterial aggregates associated to the tegument surface and to the first parenchymal layer beneath the seed tegument. Bacterial identity was confirmed by immunogold labeling. This appears to be the first report of Xcvi associated to asymptomatic seeds and berries, suggesting a systemic mechanism to spread and colonize different tissues and sites, driving attention to seeds, presenting them as an important niche for survival and dissemination of this pathogen. These results point towards the need of including seed-bearing fruit in studies regarding Xcvi epidemiology.

show abstract

Section: Resultssupporting

confidence: 58%

Detection and cellular localization of Xanthomonas campestris pv. viticola in seeds of commercial 'Red Globe' grapes

Tostes

Araujo

Farias

et al. 2014

Trop. plant pathol.

View full text Add to dashboard Cite

show abstract

“…Todos os microrganismos desse gênero são fitopatogênicos, com exceção do Xanthomonas maltophilia (Sutherland, 1993;Swings et al, 1993;García-Ochoa et al, 2000). a Xanthomonas infecta uma extensa variedade de plantas, incluindo alguns de interesse para a agricultura, como a alcachofra, o algodão, a ameixa, a berinjela, o brócolis, a couve, a couve-flor, a couve de Bruxelas, o maracujá, a mostarda, a nectarina, a pimenta, o pimentão, o rabanete, o repolho, o tomate, a alfafa, o pêssego e outras (NCPPB, 2009).…”

Section: O Gênero Xanthomonasunclassified

Goma xantana: produção, recuperação, propriedades e aplicação

Luvielmo¹,

Scamparini²

2009

ETE

View full text Add to dashboard Cite

Resumo AbstractAs bactérias pertencentes ao gênero Xanthomonas podem produzir goma xantana, um polissacarídeo de enorme interesse para as indústrias de alimentos, farmacêuticas e de petróleo. A goma apresenta capacidade de formar soluções viscosas e géis hidrossolúveis que lhe fornece propriedades reológicas únicas. Atualmente toda a goma xantana consumida no Brasil, provém de importações, porém o Brasil tem um grande potencial para a fabricação deste polímero em escala industrial, já que temos matéria-prima básica para sua produção: açúcar, extrato de levedura e álcool do setor sucro-alcooleiro. O objetivo dessa revisão é atualizar os conhecimentos sobre a produção, recuperação, propriedades e aplicação da goma xantana.The bacteria belonging to the gender Xanthomonas can produce xanthan gum, a polysaccharide of enormous interest for food, pharmaceutical and petroleum industries. The gum presents capacity to form viscous solutions and gels hydrosoluble that supplies its unique reological properties. Actually, all xanthan gum consumed in Brazil, becomes from imports, however Brazil has a great potential for production of this polymeric in industrial scale, since we have basic raw material for its production: sugar, yeast extract and alcohol of sugar-alcohol section. The objective of this review is to update the knowledge about production, recovery, properties and application of the xanthan gum.Palavras-chave: goma xantana, produção, aplicação.

show abstract

“…The colonies of the strains on agar are mucoid, convex and round. Xam is an obligate aerobic bacterium and uses oxygen as a terminal electron acceptor [16]. It grows optimally between 25 and 30°C.…”

Section: Introductionmentioning

confidence: 99%

Cassava Bacterial Blight: A Devastating Disease of Cassava

Fanou¹,

Zinsou²,

KerstinWydra³

2018

Cassava

View full text Add to dashboard Cite

Cassava (Manihot esculenta Crantz) with its long life cycle is affected by several diseases of which cassava bacterial blight (CBB) is the major bacterial disease in the cassava belt worldwide. The epidemiological and ecological investigations undertaken on the disease showed that the causal agent, the bacterium Xanthomonas axonopodis pv. manihotis (Xam), possesses several means for survival and dissemination that may play an important role as inoculum sources for the infection when favorable conditions occur, and the subsequent damage of the plant causing severe yield losses. In fact, Xam survives epiphytically on some weeds occurring in and around cassava fields without developing blight symptoms. Investigating the survival period over the seasons, a longer survival exceeding 5 months has been observed in non-decayed cassava debris. Also, some insects in cassava field like the variegated grasshopper (Zonocerus variegatus) vehicles the pathogen for some time. Over seasons Xam also survives often latently, in cassava stems which are then used for establishing new plantations. In regional disease surveys across ecozones in West Africa, no zone of preference has been found. Though, comparing the development of the disease and the damages caused in yield loss trials in two agro-eco-zones over 2 years, CBB was more pronounced and caused higher yield and biomass losses in the forest savannah transition zone than in the dry savannah where symptom development was positively correlated with the rainfall patterns. The detailed knowledge of the epidemiology, disease development, survival and dissemination, of the reaction of cassava varieties towards CBB such as physiological resistance mechanisms, identification of genetic resistance (QTL) and the background of observed field resistance as well as of the influence of planting time and cropping pattern allows to recommend integrated management measures such as sanitation, intercropping, removal of diseased leaves, management of planting dates according to ecozone, soil amendments, use of resistant genotypes.

show abstract

The bacterium Xanthomonas

Cited by 51 publications

References 150 publications

Detection and cellular localization of Xanthomonas campestris pv. viticola in seeds of commercial 'Red Globe' grapes

Detection and cellular localization of Xanthomonas campestris pv. viticola in seeds of commercial 'Red Globe' grapes

Goma xantana: produção, recuperação, propriedades e aplicação

Cassava Bacterial Blight: A Devastating Disease of Cassava

Contact Info

Product

Resources

About