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Title: S phagnum physiology in the context of changing climate: emergent influences of genomics, modelling and host-microbiome interactions on understanding ecosystem function: Sphagnum physiology and changing climate

Journal Article · · Plant, Cell and Environment
DOI:https://doi.org/10.1111/pce.12458· OSTI ID:1237104
 [1];  [1];  [2];  [2];  [1];  [3];  [4];  [1];  [2];  [2]
  1. Biosciences Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  2. Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  3. Department of Energy Joint Genome Institute, Walnut Creek CA 94598 USA, HudsonAlpha Institute of Biotechnology, Huntsville AL 35806 USA
  4. Department of Biology, Duke University, Durham NC 27708 USA

Peatlands harbour more than one-third of terrestrial carbon leading to the argument that the bryophytes, as major components of peatland ecosystems, store more organic carbon in soils than any other collective plant taxa. Plants of the genus Sphagnum are important components of peatland ecosystems and are potentially vulnerable to changing climatic conditions. However, the response of Sphagnum to rising temperatures, elevated CO2 and shifts in local hydrology have yet to be fully characterized. In this review, we examine Sphagnum biology and ecology and explore the role of this group of keystone species and its associated microbiome in carbon and nitrogen cycling using literature review and model simulations. Several issues are highlighted including the consequences of a variable environment on plant-microbiome interactions, uncertainty associated with CO2 diffusion resistances and the relationship between fixed N and that partitioned to the photosynthetic apparatus. We note that the Sphagnum fallax genome is currently being sequenced and outline potential applications of population-level genomics and corresponding plant photosynthesis and microbial metabolic modelling techniques. We highlight Sphagnum as a model organism to explore ecosystem response to a changing climate and to define the role that Sphagnum can play at the intersection of physiology, genetics and functional genomics.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-00OR22725; AC02-05CH11231
OSTI ID:
1237104
Alternate ID(s):
OSTI ID: 1237105; OSTI ID: 1286707; OSTI ID: 1616042
Journal Information:
Plant, Cell and Environment, Journal Name: Plant, Cell and Environment Vol. 38 Journal Issue: 9; ISSN 0140-7791
Publisher:
WileyCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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