Elevated atmospheric CO2 concentration changes ectomycorrhizal morphotype assemblages in Betula papyrifera
نویسندگان
چکیده
منابع مشابه
Elevated atmospheric CO2 concentration changes ectomycorrhizal
ferent species of fungi having very different physiologies and morphologies that, in turn, confer a range of different benefits to the host plant. To test the hypothesis that elevated CO2 leads to changes in the assemblage of ectomycorrhizae associated with trees, we examined the number and frequency of ectomycorrhizal morphotypes colonizing roots of Betula papyrifera Marsh. saplings grown at a...
متن کاملImpacts of elevated atmospheric CO2 and O3 on paper birch (Betula papyrifera): reproductive fitness.
Atmospheric CO2 and tropospheric O3 are rising in many regions of the world. Little is known about how these two commonly co-occurring gases will affect reproductive fitness of important forest tree species. Here, we report on the long-term effects of CO2 and O3 for paper birch seedlings exposed for nearly their entire life history at the Aspen FACE (Free Air Carbon Dioxide Enrichment) site in ...
متن کاملElevated CO2 and the magnitude and seasonal dynamics of root production and loss in Betula papyrifera
The impact of elevated atmospheric CO2 on belowground plant growth is poorly understood relative to its effects on aboveground growth. We carried out a study of the seasonal dynamics of gross root production and death to determine how elevated CO2 affected the dynamics of net and gross root production through a full growing season. We quantified gross root production and root loss from sequenti...
متن کاملLeaf size and surface characteristics of Betula papyrifera exposed to elevated CO2 and O3.
Betula papyrifera trees were exposed to elevated concentrations of CO(2) (1.4 x ambient), O(3) (1.2 x ambient) or CO(2) + O(3) at the Aspen Free-air CO(2) Enrichment Experiment. The treatment effects on leaf surface characteristics were studied after nine years of tree exposure. CO(2) and O(3) increased epidermal cell size and reduced epidermal cell density but leaf size was not altered. Stomat...
متن کاملAltered growth and fine root chemistry of Betula papyrifera and Acer saccharum under elevated CO2
We investigated the effects of CO2 enrichment on fine root chemical composition of two tree species common to northern hardwood forests. Two-year-old Betula papyrifera and 3-year-old Acer saccharum saplings were grown under ambient (400 μmol·mol–1) and elevated (700 μmol·mol–1) CO2 in a glasshouse experiment. In both species, root/shoot ratios and fine root percentages (of total biomass) were u...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 1997
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/17.5.347