Relationships between Burkholderia populations and plant parasitic nematodes in sugarcane
It is suggested that the bacterium Burkholderia tropica might be used to reduce nematode damage in sugarcane by promoting certain nematode species to create a less pathogenic nematode community. This suggestion arises from an investigation of the plant parasitic nematodes and their relationship with...
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Published in | Applied soil ecology : a section of Agriculture, ecosystems & environment Vol. 39; no. 1; pp. 1 - 14 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.05.2008
[Amsterdam]: Elsevier Science Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | It is suggested that the bacterium
Burkholderia tropica might be used to reduce nematode damage in sugarcane by promoting certain nematode species to create a less pathogenic nematode community. This suggestion arises from an investigation of the plant parasitic nematodes and their relationship with
Burkholderia species along a sugarcane row. During the course of this analysis sugarcane root and soil samples were taken at intervals (15, 45, 55, 75, 80, 85, 120, 150, 185, 190, 195
m) along a 200
m cane row across a cane field for nematode and bacterial analyses at various times after planting. Soil physical and chemical characteristics were similar at all sampling points. The numbers of culturable bacteria and
Burkholderia were significantly greater during the early part of the crop cycle when plants were younger. The diversity of the
Burkholderia communities was characterized by groups using Amplified Ribosomal 16S rDNA Restriction Analysis. Six groups were present.
Burkholderia species in each group were identified using 16S rDNA sequencing. It was observed that
B. ambifaria and
B. cenocepacia, were dominant at all sampling dates, although less so as the crop aged. The common nematode species were
Pratylenchus zeae,
Paratrichodorous minor,
Xiphinema elongatum and
Helicotylenchus dihystera. A spatial association of nematodes and
Burkholderia species along the cane row was identified using Principle Component Analysis (ADE-4 software). The more pathogenic
X. elongatum, was associated with
B. graminis,
B. silvatlantica,
B. gladioli,
B. fungorum and was dominant at the beginning of the cane row where planting started. In contrast the less pathogenic species
H. dihystera and
P. zeae, were associated with
B. tropica and were more common towards the end of the cane row where planting ended. Coinertia analysis revealed that
B. tropica was positively correlated with
H. dihystera and
P. zeae, but negatively correlated with
X. elongatum. |
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Bibliography: | http://dx.doi.org/10.1016/j.apsoil.2007.11.001 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0929-1393 1873-0272 |
DOI: | 10.1016/j.apsoil.2007.11.001 |