Elevated CO2 increases root exudation from loblolly pine (Pinus taeda) seedlings as an N-mediated response
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منابع مشابه
Elevated CO2 increases root exudation from loblolly pine (Pinus taeda) seedlings as an N-mediated response.
The degree to which forest ecosystems provide a long-term sink for increasing atmospheric CO(2) depends upon the capacity of trees to increase the availability of growth-limiting resources. It has been widely speculated that trees exposed to CO(2) enrichment may increase the release of root exudates to soil as a mechanism to stimulate microbes to enhance nutrient availability. As a first test t...
متن کاملFine-root respiration in a loblolly pine (Pinus taeda L.) forest exposed to elevated CO2 and N fertilization.
Forest ecosystems release large amounts of carbon to the atmosphere from fine-root respiration (R(r)), but the control of this flux and its temperature sensitivity (Q(10)) are poorly understood. We attempted to: (1) identify the factors limiting this flux using additions of glucose and an electron transport uncoupler (carbonyl cyanide m-chlorophenylhydrazone); and (2) improve yearly estimates o...
متن کاملThe Association of a Longidorus Species with Stunting and Root Damage of Loblolly Pine (Pinus taeda L.) Seedlings
Fraedrich, S. W., and Cram, M. M. 2002. The association of a Lungidorus species with stunting and root damage of loblolly pine (Pinus ruedu L.) seedlings. Plant Dis. 86803-807. A Longidorus species was consistently associated with patches of stunted and chlorotic loblolly pine seedlings at a forest-tree nursery in Georgia. Seedlings from affected areas had poorly developed root systems that lac...
متن کاملAcclimation of leaf hydraulic conductance and stomatal conductance of Pinus taeda (loblolly pine) to long-term growth in elevated CO2 (free-air CO2 enrichment) and N-fertilizationpce_2014
We investigated how leaf hydraulic conductance (Kleaf) of loblolly pine trees is influenced by soil nitrogen amendment (N) in stands subjected to ambient or elevated CO2 concentrations (CO2 and CO2, respectively). We also examined how Kleaf varies with changes in reference leaf water potential (Yleaf-ref) and stomatal conductance (gs-ref) calculated at vapour pressure deficit, D of 1 kPa. We de...
متن کاملSHORT COMMUNICATION Frequent fire protects shortleaf pine (Pinus echinata) from introgression by loblolly pine (P. taeda)
Across much of the globe, fire is a major disturbance agent of forest and grassland communities. The removal of fire from previously fire-maintained ecosystems, which has occurred in many areas, changes species composition, favoring later less fire tolerant species over fire-adapted ones. A recent measured increase in the rate of hybridization between the fire-adapted shortleaf pine (Pinus echi...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 2009
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/tpp083