Effects of rhizobacteria on parasitism by Meloidogyne ethiopica on grapevines
Author
dc.contributor.author
Aballay Espinoza, Erwin
es_CL
Author
dc.contributor.author
Órdenes, Paula
es_CL
Author
dc.contributor.author
Martensson, Anna
Author
dc.contributor.author
Persson, Paula
es_CL
Admission date
dc.date.accessioned
2014-01-24T18:25:32Z
Available date
dc.date.available
2014-01-24T18:25:32Z
Publication date
dc.date.issued
2013
Cita de ítem
dc.identifier.citation
Eur J Plant Pathol (2013) 135:137–145 DOI 10.1007/s10658-012-0073-7
en_US
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/120226
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
Meloidogyne ethiopica is one of the most
important plant-parasitic nematodes affecting vines in
Chile and is very aggressive and difficult to control.
This study evaluated 16 strains of rhizobacteria, originally
isolated from roots of grapevines, for their
effects on parasitism and nematode damage to potted
vine plants. The antagonistic effect of rhizobacteria
was assessed by treating 2-month-old plants of cv.
Chardonnay in 3-l pots with a suspension containing
1×106cfuml−1 of the bacteria and 1,000 nematode
eggs. After 6 months of growth, the plants were cut
and root and canopy weights, nematode populations
and root damage determined. The effect of rhizobacterial
culture filtrate on hatching of nematode eggs was
also assessed in vitro. Seven strains of rhizobacteria
proved effective in inhibiting damage or reproduction
of the nematode. These were strains of Serratia
marcescens, Comamonas acidovorans, Pantoea
agglomerans, Sphingobacterium spiritivorum, Bacillus
mycoides, Alcaligenes piechaudii and Serratia plymuthica.
A further three strains, of Bacillus megaterium, P.
agglomerans and Pseudomonas savastanoi, significantly
increased root weight, but did not decrease nematode
damage or population density. The supernatant of
all strains significantly decreased hatching of juvenile
nematodes after 24 h of immersion, with isolates
of P. putida and B. megaterium being the
most effective.