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

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...

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Bibliographic Details
Published in:European journal of plant pathology 2014-07, Vol.139 (3), p.593-596
Main Authors: Coletta-Filho, Helvécio Della, Carvalho, Sérgio Alves, Silva, Luis Fernando Carvalho, Machado, Marcos Antonio
Format: Article
Language:English
Subjects:
Agriculture
bacteria
Biomedical and Life Sciences
Citrus
Citrus fruits
citrus variegated chlorosis
Disease transmission
Ecology
endosperm
exocarp
Fruits
germplasm
Life Sciences
mesocarp
Pathogens
Plant diseases
Plant Pathology
Plant Sciences
polymerase chain reaction
seed trees
Seedlings
Seeds
testa
Trees
vigor
Xylella fastidiosa
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Summary: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-seedling transmission of X. fastidiosa. This bacterium was found colonizing the fruit (exocarp, central axis and mesocarp) and the seed parts (seed coat and endosperm plus embryo). After 7 years of PCR assay, no positive PCR detection of X. fastidiosa was confirmed in seedlings propagated from the seeds infected with X. fastidiosa. This result demonstrates the lack of seed-to-seedling transmission of this bacterium.
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-014-0415-8