Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae
Isolates of Xanthomonas oryzae pv. oryzae (causal agent of bacterial blight of rice) from the Philippines representing two phylogenetic lineages, and five haplotypes within those two lineages, were evaluated for aggressiveness in two glasshouse trials. Aggressiveness was determined by clip‐inoculati...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2002
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/166914 |
| _version_ | 1855539558841581568 |
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| author | Mundt, C.C. Nieva, L.P. Vera Cruz, C.M. |
| author_browse | Mundt, C.C. Nieva, L.P. Vera Cruz, C.M. |
| author_facet | Mundt, C.C. Nieva, L.P. Vera Cruz, C.M. |
| author_sort | Mundt, C.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Isolates of Xanthomonas oryzae pv. oryzae (causal agent of bacterial blight of rice) from the Philippines representing two phylogenetic lineages, and five haplotypes within those two lineages, were evaluated for aggressiveness in two glasshouse trials. Aggressiveness was determined by clip‐inoculating leaves of a rice cultivar lacking known, effective major genes for resistance and measuring the lengths of resulting lesions. Variance components analysis indicated that 55 and 46% of the lesion length variation were genetic in origin for the first and second trials, respectively. Variation of lesion length among isolates within haplotypes was highly significant in both trials (P = 0·002 and 0·027), but the effects of lineage and haplotype within lineage were not (P = 0·08 and 0·30 for lineage and P= 0·23 and 0·07 for haplotype). These results suggest that substantial heritable variation for aggressiveness exists within Philippine populations of X. oryzae pv. oryzae. This variation appears to be more prevalent within than among known phylogenetic groups, although mean differences among phylogenetic groups may still be of significant biological importance. |
| format | Journal Article |
| id | CGSpace166914 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1669142025-05-14T10:39:58Z Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae Mundt, C.C. Nieva, L.P. Vera Cruz, C.M. xanthomonas oryzae pv oryzae bacterial blight genetic diversity phylogeny restriction fragment length polymorphism Isolates of Xanthomonas oryzae pv. oryzae (causal agent of bacterial blight of rice) from the Philippines representing two phylogenetic lineages, and five haplotypes within those two lineages, were evaluated for aggressiveness in two glasshouse trials. Aggressiveness was determined by clip‐inoculating leaves of a rice cultivar lacking known, effective major genes for resistance and measuring the lengths of resulting lesions. Variance components analysis indicated that 55 and 46% of the lesion length variation were genetic in origin for the first and second trials, respectively. Variation of lesion length among isolates within haplotypes was highly significant in both trials (P = 0·002 and 0·027), but the effects of lineage and haplotype within lineage were not (P = 0·08 and 0·30 for lineage and P= 0·23 and 0·07 for haplotype). These results suggest that substantial heritable variation for aggressiveness exists within Philippine populations of X. oryzae pv. oryzae. This variation appears to be more prevalent within than among known phylogenetic groups, although mean differences among phylogenetic groups may still be of significant biological importance. 2002-04 2024-12-19T12:56:48Z 2024-12-19T12:56:48Z Journal Article https://hdl.handle.net/10568/166914 en Wiley Mundt, C. C.; Nieva, L. P. and Vera Cruz, C. M. 2002. Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae. Plant Pathology, Volume 51 no. 2 p. 163-168 |
| spellingShingle | xanthomonas oryzae pv oryzae bacterial blight genetic diversity phylogeny restriction fragment length polymorphism Mundt, C.C. Nieva, L.P. Vera Cruz, C.M. Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title | Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title_full | Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title_fullStr | Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title_full_unstemmed | Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title_short | Variation for aggressiveness within and between lineages of Xanthomonas oryzae pv. oryzae |
| title_sort | variation for aggressiveness within and between lineages of xanthomonas oryzae pv oryzae |
| topic | xanthomonas oryzae pv oryzae bacterial blight genetic diversity phylogeny restriction fragment length polymorphism |
| url | https://hdl.handle.net/10568/166914 |
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