Endosphere microbial community assemblage of an inland sand dune colonizing plant
Julkaistu sarjassa
Jyväskylä studies in biological and environmental scienceTekijät
Päivämäärä
2016Oppiaine
Ekologia ja evoluutiobiologiaPlant-associated microbes could play a role in plant colonization of sand dune
ecosystems, but microbes associated with plants colonizing those ecosystems in the
arctic are poorly known. I characterized Deschampsia flexuosa-associated
microbiomes in two successional stages (early and late) of arctic inland sand dune
differ in their plant species richness and soil physiochemical properties. The work
based on culturable microbes showed that different plant parts harbour generalist
and specific groups of endosphere microbes and most of the endosphere bacteria
were closely related to other cold habitat microbes. Also, most of the endosphere
bacteria possessed an important plant growth promoting property of solubilizing
organic phosphate. Next generation sequencing methods showed that endosphere
microbial species richness was determined by soil characteristics (succession) and
plant compartment. Successional stage strongly affected the microbial community
composition. Further, reciprocal transplantation experiment showed that
endosphere microbial species richness was determined by successional stage
rather than transplantation type (self or reciprocal). Irrespective of successional
stage, after reciprocal transplantation microbial community compositions in most
of the leaf and root compartments differed from local non-transplanted control. In
contrast, the microbial community composition only in few root compartments
was affected by self-transplantation. Further, leaf endosphere bacterial community
composition was significantly affected by arbuscular mycorrhizal fungal (AMF)
inoculation under greenhouse conditions. Overall, my work provided data from
poorly characterized arctic biota and novel insight into endosphere bacterial and
fungal community assemblage in arctic inland sand dune ecosystem. These results
could be utilized when restoring vegetation in sand dunes and similar extreme
ecosystems.
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Julkaisija
University of JyväskyläISBN
978-951-39-6848-9ISSN Hae Julkaisufoorumista
1456-9701Asiasanat
Katso myös
http://urn.fi/URN:NBN:fi:jyu-201611234732Metadata
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Reseach data of a dissertation "Endosphere microbial community assemblage of an inland sand dune colonizing plant"
Poosakkannu, Anbu (2016)Dataset of a dissertation. -
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