@ARTICLE{TreeBASE2Ref17112,
author = {Elizabeth J. Pope and Dee A. Carter},
title = {Phylogenetic placement and host specificity of mycorrhizal isolates belonging to AG-6 and AG-12 in the Rhizoctonia solani species complex.},
year = {2001},
keywords = {anastomosis group; mycorrhizae; phylogenetics; seed germination},
doi = {},
url = {http://www.jstor.org/stable/3761825},
pmid = {},
journal = {Mycologia},
volume = {93},
number = {4},
pages = {712--719},
abstract = {Rhizoctonia solani isolates belonging to anastomosis group 6 (AG-6) and AG-12 are mycorrhizal with the Australian orchid Pterostylis acuminata. In this study, phylogenetic analyses were conducted using sequences of the ITS (internal transcribed spacer) region of the rRNA gene from all known anastomosis groups of R. solani. The mycorrhizal isolates of AG-6 and AG-12 were placed on independent branches, despite their functional and geographic similarities. The mycorrhizal AG-6 isolates were positioned most closely to the pathogenic AG-6 isolates from Southern Africa. The remaining AG-6 isolates from Japan and the USA were positioned in a distinct and independent cluster, suggesting that various subgroups of AG-6 have evolved independently within R. solani. Germination tests were conducted using AG-6 isolates obtained from pathogenic and saprophytic interactions, as well as isolates belonging to the pathogenic AGs 3, 4, 5, 7, and 8. All AG?6 isolates promoted germination of P. acuminata seed, regardless of their origin, although they did so more slowly than the AG-12 isolates. All other AGs either parasitized or disregarded the orchid seed, indicating that the ability to form mycorrhizal interactions is restricted in R. solani. This is the first phylogenetic analysis to include all known AGs with a range of host associations and geographic origins including the newly described mycorrhizal AGs, and will assist in understanding the evolutionary history and host specificity of this fungus.}
}
Citation for Study 755
Citation title:
"Phylogenetic placement and host specificity of mycorrhizal isolates belonging to AG-6 and AG-12 in the Rhizoctonia solani species complex.".
This study was previously identified under the legacy study ID S607
(Status: Published).
Citation
Pope E., & Carter D. 2001. Phylogenetic placement and host specificity of mycorrhizal isolates belonging to AG-6 and AG-12 in the Rhizoctonia solani species complex. Mycologia, 93(4): 712-719.
Authors
Abstract
Rhizoctonia solani isolates belonging to anastomosis group 6 (AG-6) and AG-12 are mycorrhizal with the Australian orchid Pterostylis acuminata. In this study, phylogenetic analyses were conducted using sequences of the ITS (internal transcribed spacer) region of the rRNA gene from all known anastomosis groups of R. solani. The mycorrhizal isolates of AG-6 and AG-12 were placed on independent branches, despite their functional and geographic similarities. The mycorrhizal AG-6 isolates were positioned most closely to the pathogenic AG-6 isolates from Southern Africa. The remaining AG-6 isolates from Japan and the USA were positioned in a distinct and independent cluster, suggesting that various subgroups of AG-6 have evolved independently within R. solani. Germination tests were conducted using AG-6 isolates obtained from pathogenic and saprophytic interactions, as well as isolates belonging to the pathogenic AGs 3, 4, 5, 7, and 8. All AG?6 isolates promoted germination of P. acuminata seed, regardless of their origin, although they did so more slowly than the AG-12 isolates. All other AGs either parasitized or disregarded the orchid seed, indicating that the ability to form mycorrhizal interactions is restricted in R. solani. This is the first phylogenetic analysis to include all known AGs with a range of host associations and geographic origins including the newly described mycorrhizal AGs, and will assist in understanding the evolutionary history and host specificity of this fungus.
Keywords
anastomosis group; mycorrhizae; phylogenetics; seed germination
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S755
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref17112,
author = {Elizabeth J. Pope and Dee A. Carter},
title = {Phylogenetic placement and host specificity of mycorrhizal isolates belonging to AG-6 and AG-12 in the Rhizoctonia solani species complex.},
year = {2001},
keywords = {anastomosis group; mycorrhizae; phylogenetics; seed germination},
doi = {},
url = {http://www.jstor.org/stable/3761825},
pmid = {},
journal = {Mycologia},
volume = {93},
number = {4},
pages = {712--719},
abstract = {Rhizoctonia solani isolates belonging to anastomosis group 6 (AG-6) and AG-12 are mycorrhizal with the Australian orchid Pterostylis acuminata. In this study, phylogenetic analyses were conducted using sequences of the ITS (internal transcribed spacer) region of the rRNA gene from all known anastomosis groups of R. solani. The mycorrhizal isolates of AG-6 and AG-12 were placed on independent branches, despite their functional and geographic similarities. The mycorrhizal AG-6 isolates were positioned most closely to the pathogenic AG-6 isolates from Southern Africa. The remaining AG-6 isolates from Japan and the USA were positioned in a distinct and independent cluster, suggesting that various subgroups of AG-6 have evolved independently within R. solani. Germination tests were conducted using AG-6 isolates obtained from pathogenic and saprophytic interactions, as well as isolates belonging to the pathogenic AGs 3, 4, 5, 7, and 8. All AG?6 isolates promoted germination of P. acuminata seed, regardless of their origin, although they did so more slowly than the AG-12 isolates. All other AGs either parasitized or disregarded the orchid seed, indicating that the ability to form mycorrhizal interactions is restricted in R. solani. This is the first phylogenetic analysis to include all known AGs with a range of host associations and geographic origins including the newly described mycorrhizal AGs, and will assist in understanding the evolutionary history and host specificity of this fungus.}
}
- Show RIS reference
TY - JOUR
ID - 17112
AU - Pope,Elizabeth J.
AU - Carter,Dee A.
T1 - Phylogenetic placement and host specificity of mycorrhizal isolates belonging to AG-6 and AG-12 in the Rhizoctonia solani species complex.
PY - 2001
KW - anastomosis group; mycorrhizae; phylogenetics; seed germination
UR - http://www.jstor.org/stable/3761825
N2 - Rhizoctonia solani isolates belonging to anastomosis group 6 (AG-6) and AG-12 are mycorrhizal with the Australian orchid Pterostylis acuminata. In this study, phylogenetic analyses were conducted using sequences of the ITS (internal transcribed spacer) region of the rRNA gene from all known anastomosis groups of R. solani. The mycorrhizal isolates of AG-6 and AG-12 were placed on independent branches, despite their functional and geographic similarities. The mycorrhizal AG-6 isolates were positioned most closely to the pathogenic AG-6 isolates from Southern Africa. The remaining AG-6 isolates from Japan and the USA were positioned in a distinct and independent cluster, suggesting that various subgroups of AG-6 have evolved independently within R. solani. Germination tests were conducted using AG-6 isolates obtained from pathogenic and saprophytic interactions, as well as isolates belonging to the pathogenic AGs 3, 4, 5, 7, and 8. All AG?6 isolates promoted germination of P. acuminata seed, regardless of their origin, although they did so more slowly than the AG-12 isolates. All other AGs either parasitized or disregarded the orchid seed, indicating that the ability to form mycorrhizal interactions is restricted in R. solani. This is the first phylogenetic analysis to include all known AGs with a range of host associations and geographic origins including the newly described mycorrhizal AGs, and will assist in understanding the evolutionary history and host specificity of this fungus.
L3 -
JF - Mycologia
VL - 93
IS - 4
SP - 712
EP - 719
ER -