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Ecogenomics of Mycorrhizal Interactions Mediated by the Aspen Genome under Elevated Ozone and Carbon Dioxide
Ist Teil von
Genetics, Genomics and Breeding of Poplar, 2011, p.359-394
Ort / Verlag
United Kingdom: CRC Press
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Human activities have greatly accelerated the rates of global environmental
change (Vitousek et al. 1997). Understanding the consequences of these
changes for forest ecosystems is one of the more pressing challenges
confronting the scientific community today, given the importance of
forests in global net primary production (NPP), carbon sequestration,
human economies, and as repositories of biodiversity (Hassan et al. 2005).
The effects of environmental change will occur fi rst and foremost in the
activation or suppression of genes within the species of these systems.
Altered gene expression drives plant function, and gene expression at all
levels is the fi rst transponder that receives the signal that the atmosphere
has changed. Any alteration of gene expression sequence that controls
the allocation of photosynthate to below-ground structures also has the
potential of infl uencing root function via effects on processes associated with
membrane permeability and transporter function, membrane repair, and
the production of signaling molecules important in regulating mycorrhizal
and pathogen interactions (Garrett et al. 2006). It is important then, in
order to better anticipate the consequences of environmental change, toidentify those genes that are activated by an alteration of environmental
conditions. More specifi cally, it is important to be able to identify those
genes or gene sequences that are good surrogates of the metabolic state of
an individual but can also be used to scale from the individual to higher
organization levels as a robust indicator of a change in the community or
ecosystem properties.