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Photosynthetic Fractionation of the Stable Isotopes of Oxygen and Carbon
The results provide improved estimates of discrimination factors in several reactions prominent in the global O cycle and indicate that photorespiration plays a significant part in determining the isotopic composition of atmospheric oxygen.
The use of remote sensing in light use efficiency based models of gross primary production: a review of current status and future requirements.
Differential fractionation of oxygen isotopes by cyanide-resistant and cyanide-sensitive respiration in plants
Stable-isotope discrimination factors (D) for the uptake of oxygen during respiration by a variety of plant materials were determined by measuring 18O enrichment in a closed system to estimate the partitioning of electron transport between the two pathways at steady-state by linear interpolation between the Ds characteristic of cyanide-resistant and cyanid-sensitive respiration.
Geographical and environmental gradients shape phenotypic trait variation and genetic structure in Populus trichocarpa.
Robust relationships between traits, population structure and geoclimate in P. trichocarpa reflect patterns which suggest that range-wide geographical and environment gradients have shaped its genotypic and phenotypic variability.
Association genetics, geography and ecophysiology link stomatal patterning in Populus trichocarpa with carbon gain and disease resistance trade‐offs
Investigating the underlying genetics of stomatal traits and linked variability in these traits with geoclimate, ecophysiology, condensed foliar tannins and pathogen susceptibility in black cottonwood suggested an evolutionary trade‐off related to differing selection pressures across the species range.
Enhanced assimilation rate and water use efficiency with latitude through increased photosynthetic capacity and internal conductance in balsam poplar (Populus balsamifera L.).
- R. Soolanayakanahally, R. Guy, S. Silim, Eric C. Drewes, W. Schroeder
- Environmental SciencePlant, cell & environment
- 1 December 2009
Higher peak rates of height growth in high latitude genotypes of balsam poplar are supported by higher A, achieved partly through higher g(m), to help compensate for a shorter growing season.
The effects of nitrogen stress on the stable carbon isotope composition, productivity and water use efficiency of white spruce (Picea glauca (Moench) Voss) seedlings
The effect of nitrogen stress on needle δ 13 C, water-use efficiency (WUE) and biomass production in irrigated and dry land white spruce (Picea glauca (Moench) Voss) seedlings was investigated.…
Genome-wide association implicates numerous genes underlying ecological trait variation in natural populations of Populus trichocarpa.
In order to uncover the genetic basis of phenotypic trait variation, 448 unrelated wild accessions of black cottonwood from much of its range in western North America are used and numerous loci are proposed for further investigation.
LANDSCAPE GENOMICS OF POPULUS TRICHOCARPA: THE ROLE OF HYBRIDIZATION, LIMITED GENE FLOW, AND NATURAL SELECTION IN SHAPING PATTERNS OF POPULATION STRUCTURE
- A. Geraldes, N. Farzaneh, Q. Cronk
- Environmental Science, BiologyEvolution; international journal of organic…
- 1 November 2014
Gene Ontology analyses revealed that FST outliers are overrepresented in genes involved in circadian rhythm and response to red/far‐red light when the entire dataset is considered, whereas in southern BC heat response genes are over represented.
Whole-plant nitrogen- and water-relations traits, and their associated trade-offs, in adjacent muskeg and upland boreal spruce species
Black spruce was found to be significantly less sensitive to nitrogen stress, exhibited greater plasticity in nitrogen-use efficiency, and had a greater specific N absorption rate under high-N conditions than white spruce, suggesting optimization of the trade-off.