Seven years of negative detection results confirm that Xylella fastidiosa, the causal agent of CVC, is not transmitted from seeds to seedlings

@article{ColettaFilho2014SevenYO,
  title={Seven years of negative detection results confirm that Xylella fastidiosa, the causal agent of CVC, is not transmitted from seeds to seedlings},
  author={Helv{\'e}cio Della Coletta-Filho and S{\'e}rgio Alves de Carvalho and Luis Fernando Carvalho Silva and Marcos Antonio Machado},
  journal={European Journal of Plant Pathology},
  year={2014},
  volume={139},
  pages={593-596}
}
Knowledge about the mechanism of transmission of systemic pathogens of citrus species is highly important for the safe movement of citrus germplasm, management of citrus mother trees, and also production of young plants. Among systemic pathogens of citrus, Xylella fastidiosa the causal agent of the citrus variegated chlorosis (CVC), is one the most important pathogens causing decline in tree vigour and productivity. Seven-year experiments were conducted to evaluate the hypothesis of seed-to… Expand

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1 Department of Genetics, University of S~ ao Paulo, ESALQ/USP, Piracicaba, SP, Brazil 2 N ucleo Integrado de Biotecnologia, NIB, University of Mogi das Cruzes, Mogi das Cruzes, SP, Brazil 3 CentroExpand

References

SHOWING 1-10 OF 27 REFERENCES
Determination of the Presence of Huanglongbing in Seeds and Movement of the Pathogen in Citrus reticulata
TLDR
HLB disease in citrus is not seed borne and it can reach to the roots 26 weeks after inoculation, base on conventional PCR test. Expand
Presence of Xylella fastidiosa in Sweet Orange Fruit and Seeds and Its Transmission to Seedlings.
TLDR
The results show that X. fastidiosa can infect and colonize fruit tissues including the seed, and it is shown that the bacterium can be transmitted from seeds to seedlings of sweet orange. Expand
Candidatus Liberibacter asiaticus and Huanglongbing effects on citrus seeds and seedlings.
Huanglongbing (HLB) is devastating disease of citrus and threatens the citrus industry worldwide. The suspected causal agent of the disease is a phloem-limited bacterium of the genus Cana'idatusExpand
Serological detection of Citrus psorosis virus in seeds but not in seedlings of infected mandarin and sour orange.
TLDR
None of 690 ‘Grosso di Puglia’ mandarin and 202 ‘Baladi’ sour orange seedlings obtained from treated and untreated seeds reacted positively in ELISA and no psorosis symptoms were observed in glasshouse-grown seedlings, nor were expressed by Dweet tangor grafted on 50 of these seedlings. Expand
Colonization of citrus seed coats by 'Candidatus Liberibacter asiaticus': implications for seed transmission of the bacterium.
  • M. Hilf
  • Biology, Medicine
  • Phytopathology
  • 2011
TLDR
Though the apparent colonization of 'Conners' seeds was more extensive and nearly uniform compared with 'Sanguenelli' seeds, no association was established between the presence of pathogen DNA in fruit peduncles and seed coats and in seedlings. Expand
Lack of Development of Huanglongbing in Seedlings from Citrus Seed
TLDR
Assays of seedlings derived from seed extracted from symptomatic fruit found the most probable explanation for transient transmission of Lasfrom seed obtained from HLB-affected trees with no subsequent disease establishment. Expand
Lack of Evidence for Transmission of 'Candidatus Liberibacter asiaticus' Through Citrus Seed Taken from Affected Fruit.
TLDR
This research was undertaken to provide evidence as to whether or not 'Ca. L. asiaticus' can be transmitted through seed, and found no evidence of transmission of the pathogen through seed. Expand
PLANT-TO-SEED TRANSMISSION OF CURTOBACTERIUM FLACCUMFACIENS pv. FLACCUMACIENS IN A DRY BEAN CULTIVAR
TLDR
Low levels of disease developed, indicating resistance to bacterial wilt, whereas cvs Perola and IAC Carioca were highly susceptible in all the assays. Expand
Transmission from Seed to Seedling and Secondary Spread of Xanthomonas campestris pv. Campestris in Brassica Transplants: Effects of Dose and Watering Regime
TLDR
The effects of inoculum load and watering regime on the transmission of Xanthomonas campestris from seed to seedlings of cauliflower were investigated and it was found that the proportion of plants with symptoms was greater for plants subjected to overhead watering, due to spread and secondary infection. Expand
Citrus Responses to Xylella fastidiosa Infection.
TLDR
There were no obvious differences in xylem anatomy among all citrus varieties, suggesting that the mechanisms of resistance to CVC are not related to any physical variation inxylem structure. Expand
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