Abstract：
:Members of the ant tribe Camponotini have coevolved with Blochmannia, an obligate intracellular bacterial mutualist. This endosymbiont lives within host bacteriocyte cells that line the ant midgut, undergoes maternal transmission from host queens to offspring, and contributes to host nutrition via nitrogen recycling and nutrient biosynthesis. While elevated temperature has been shown to disrupt obligate bacterial mutualists of some insects, its impact on the ant-Blochmannia partnership is less clear. Here, we test the effect of heat on the density of Blochmannia in two related Camponotus species in the lab. Transcriptionally active Blochmannia were quantified using RT-qPCR as the ratio of Blochmannia 16S rRNA to ant host elongation factor 1-α transcripts. Our results showed that 4 weeks of heat treatment depleted active Blochmannia by >99 % in minor workers and unmated queens. However, complete elimination of Blochmannia transcripts rarely occurred, even after 16 weeks of heat treatment. Possible mechanisms of observed thermal sensitivity may include extreme AT-richness and related features of Blochmannia genomes, as well as host stress responses. Broadly, the observed depletion of an essential microbial mutualist in heat-treated ants is analogous to the loss of zooanthellae during coral bleaching. While the ecological relevance of Blochmannia's thermal sensitivity is uncertain, our results argue that symbiont dynamics should be part of models predicting how ants and other animals will respond and adapt to a warming climate.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Fan Y,Wernegreen JJdoi
10.1007/s00248-013-0264-6subject
Has Abstractpub_date
2013-10-01 00:00:00pages
727-33issue
3eissn
0095-3628issn
1432-184Xjournal_volume
66pub_type
杂志文章abstract：:Sediment samples were collected monthly from Acton Lake, a eutrophic reservoir located in an agricultural region of southwestern Ohio, from three stations (River, Middle, and Dam) during the period May 1995 through January 1997. Sedimentary microbial biomass and community structures from these stations were studied us...
journal_title：Microbial ecology
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doi：10.1007/s002480000102
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abstract：:Ecological transformations derived from habitat fragmentation have led to increased threats to above-ground biodiversity. However, the impacts of forest fragmentation on soils and their microbial communities are not well understood. We examined the effects of contrasting fragment sizes on the structure and functioning...
journal_title：Microbial ecology
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journal_title：Microbial ecology
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0254-9
更新日期：2004-08-01 00:00:00
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journal_title：Microbial ecology
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journal_title：Microbial ecology
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journal_title：Microbial ecology
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journal_title：Microbial ecology
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journal_title：Microbial ecology
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doi：10.1007/s00248-015-0716-2
更新日期：2016-05-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
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更新日期：2013-08-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-014-0506-2
更新日期：2015-04-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01462-z
更新日期：2020-05-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00172569
更新日期：1995-09-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9979-4
更新日期：2012-04-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9355-6
更新日期：2008-08-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9574-0
更新日期：2010-02-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0120-0
更新日期：2013-02-01 00:00:00
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journal_title：Microbial ecology
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doi：10.1007/s00248-013-0360-7
更新日期：2014-04-01 00:00:00
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更新日期：2018-08-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02017167
更新日期：1990-05-01 00:00:00
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更新日期：2001-02-01 00:00:00
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journal_title：Microbial ecology
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更新日期：2015-10-01 00:00:00
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journal_title：Microbial ecology
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journal_title：Microbial ecology
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doi：10.1007/s002480000069
更新日期：2001-01-01 00:00:00
