Abstract:
:We investigated the genetic diversity of symbiotic bacteria associated with two newly discovered species of Osedax from Monterey Canyon, CA, at 1,017-m (Osedax Monterey Bay sp. 3 "rosy" [Osedax sp. MB3]) and 381-m (Osedax Monterey Bay sp. 4 "yellow collar") depths. Quantitative PCR and clone libraries of 16S rRNA gene sequences identified differences in the compositions and abundances of bacterial phylotypes associated with the newly discovered host species and permitted comparisons between adult Osedax frankpressi and juveniles that had recently colonized whalebones implanted at 2,891 m. The newly discovered Osedax species hosted Oceanospirillales symbionts that are related to Gammaproteobacteria associated with the previously described O. frankpressi and Osedax rubiplumus (S. K. Goffredi, V. J. Orphan, G. W. Rouse, L. Jahnke, T. Embaye, K. Turk, R. Lee, and R. C. Vrijenhoek, Environ. Microbiol. 7:1369-1378, 2005). In addition, Osedax sp. MB3 hosts a diverse and abundant population of additional bacteria dominated by Epsilonproteobacteria. Ultrastructural analysis of symbiont-bearing root tissues verified the enhanced microbial diversity of Osedax sp. MB3. Root tissues from the newly described host species and O. frankpressi all exhibited collagenolytic enzyme activity, which covaried positively with the abundance of symbiont DNA and negatively with mean adult size of the host species. Members of this unusual genus of bone-eating worms may form variable associations with symbiotic bacteria that allow for the observed differences in colonization and success in whale fall environments throughout the world's oceans.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Goffredi SK,Johnson SB,Vrijenhoek RCdoi
10.1128/AEM.01986-06subject
Has Abstractpub_date
2007-04-01 00:00:00pages
2314-23issue
7eissn
0099-2240issn
1098-5336pii
AEM.01986-06journal_volume
73pub_type
杂志文章abstract::Piriformospora indica (Hymenomycetes, Basidiomycota) is a newly described cultivable endophyte that colonizes roots. Inoculation with the fungus and application of fungal culture filtrate promotes plant growth and biomass production. Due to its ease of culture, this fungus provides a model organism for the study of be...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.6.2741-2744.1999
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.1.181-186.1990
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pub_type: 杂志文章
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更新日期:1993-07-01 00:00:00
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doi:10.1128/AEM.41.3.752-757.1981
更新日期:1981-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:1982-01-01 00:00:00
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更新日期:1977-07-01 00:00:00
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doi:10.1128/AEM.50.5.1165-1170.1985
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.61.8.3136-3141.1995
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.1.243-247.1994
更新日期:1994-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2001-07-01 00:00:00