Citrus Variegated Chlorosis Bacterium: Axenic Culture, Pathogenicity, and Serological Relationships with Other Strains of<i>Xylella fastidiosa</i>

Hartung, John; Beretta, J.; Brlansky, R. H.; Spisso, J.; Lee, R. F.

doi:10.1094/phyto-84-591

Cited by 144 publications

(93 citation statements)

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“…This disease is caused by Xylella fastidiosa (Hartung et al ., 1994) or X. fastidiosa subsp. pauca (Schaad et al ., 2004) and 18 years after its description, it is known to infect about 43% of the estimated 200 million trees grown in the states of São Paulo and Minas Gerais, Brazil (www.fundecitrus.com.br).…”

Section: Introductionmentioning

confidence: 99%

Analysis of resistance to Xylella fastidiosa within a hybrid population of Pera sweet orange × Murcott tangor

Coletta-Filho¹,

Pereira

Souza

et al. 2007

Plant Pathology

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Resistance to Xylella fastidiosa was evaluated within a population of 20 interspecific hybrids of Pera sweet orange and Murcott tangor under greenhouse conditions. Efficiency of inoculation, multiplication of bacteria within the plants, xylem vessel morphology, and symptom expression were analysed. The rate of infection ranged from 40 to 100% (average 70%) for all genotypes analysed. Xylella fastidiosa populations ranged from log 0·59 to log 2·13 cells mg − 1 tissue for the resistant hybrids. These values were significantly different ( P = 0·05) from those obtained for the tolerant (no symptoms but bacteria recovered) or susceptible (symptoms and bacteria recovered) hybrids (log 3·02 to log 4·06 cells mg − 1 ). Xylella fastidiosa was recovered from all hybrids (log 2·31 to 5·03 CFU mg − 1 tissue) except the resistant ones. The first foliar symptoms appeared at least 90 days post-inoculation, the time varying according to genotype. No correlation between xylem vessel morphology and disease expression was observed, indicating that the resistance was the result of a genetic response of the host. According to this hypothesis, a high broad-based heritability index for resistance was obtained (0·96) at 210 days from X. fastidiosa inoculations, using bacterial quantification by real-time PCR, which indicated that the influence of the number of bacteria was the result of genetic rather than environmental variations.

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Section: Introductionmentioning

confidence: 99%

Analysis of resistance to Xylella fastidiosa within a hybrid population of Pera sweet orange × Murcott tangor

Coletta-Filho¹,

Pereira

Souza

et al. 2007

Plant Pathology

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“…sandyi [4,7]. Aside from the three defined subspecies, many strains of X. fastidiosa have also been described [2,[5][6][7][8][9][10]. Colonization of the host by X. fastidiosa is not host-specific, but pathogenicity of X. fastidiosa exhibits a degree of host specificity.…”

Section: Introductionmentioning

confidence: 99%

Development of Quantitative Real-Time Polymerase Chain Reaction protocols for rapid detection and differentiation of Xylella fastidiosa subsp. fastidiosa and Xylella fastidiosa subsp. multiplex

Pierce¹,

Morano²,

Bextine³

2011

J Plant Pathol Microbiol

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“…This bacterium infects the xylem vessels of plants and causes significant economic losses in several crops (Hopkins 1989), such as the leaf scald in plums (Raju et al 1982), phony peach disease (Wells et al 1987), pierce's disease of grapevine (Davis et al 1978), leaf scorch in coffee (Hartung et al 1994) and citrus variegated chlorosis (CVC) (Chang et al 1993, Hartung et al 1994, among others. Among the symptoms, X. fastidiosa causes the death of susceptible plants.…”

Section: Introductionmentioning

confidence: 99%

Evolution of the response of segregating populations of plums and the association with microsatellite markers of leaf scald

Dalbó

Klabunde

Nodari

et al. 2010

Crop Breed. Appl. Biotechnol.

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-The evolution of leaf scald (Xylella fastidiosa) resistance was evaluated in individuals of seven plum segregating populations, consisted of seedling progenies originating from crosses involving nine plum cultivars, with varied levels of resistance. Plants were submitted to artificial inoculation in 2001 and evaluated annually from 2002 to 2007 for the evolution of leaf scald symptoms. All populations showed an evolution of symptom severity during the evaluated period. The population Amarelinha x Carazinho was the most resistant while populations Chatard x Santa Rosa and Chatard x Simka were the most susceptible ones. The populations Chatard x Harry Pickstone and Chatard x Angeleno exhibited an intermediate behavior. The analysis of genetic segregation of microsatellite markers and disease resistance curves in different populations indicated that inheritance to leaf scald resistance is polygenic and predominantly recessive, with an eventual presence of major QTLs in susceptible parents.

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Citrus Variegated Chlorosis Bacterium: Axenic Culture, Pathogenicity, and Serological Relationships with Other Strains ofXylella fastidiosa

Cited by 144 publications

References 0 publications

Analysis of resistance to Xylella fastidiosa within a hybrid population of Pera sweet orange × Murcott tangor

Analysis of resistance to Xylella fastidiosa within a hybrid population of Pera sweet orange × Murcott tangor

Development of Quantitative Real-Time Polymerase Chain Reaction protocols for rapid detection and differentiation of Xylella fastidiosa subsp. fastidiosa and Xylella fastidiosa subsp. multiplex

Evolution of the response of segregating populations of plums and the association with microsatellite markers of leaf scald

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