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populus tristis/atròfia
L'enllaç es desa al porta-retalls
7 resultats
Divergence of the Dof gene families in poplar, Arabidopsis, and rice suggests multiple modes of gene evolution after duplication.
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It is widely accepted that gene duplication is a primary source of genetic novelty. However, the evolutionary fate of duplicated genes remains largely unresolved. The classical Ohno's Duplication-Retention-Non/Neofunctionalization theory, and the recently proposed alternatives such as
Mule deer impede Pando's recovery: Implications for aspen resilience from a single-genotype forest.
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Aspen ecosystems (upland Populus-dominated forests) support diverse species assemblages in many parts of the northern hemisphere, yet are imperiled by common stressors. Extended drought, fire suppression, human development, and chronic herbivory serve to limit the sustainability of this keystone
Contrasting patterns of evolution following whole genome versus tandem duplication events in Populus.
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Comparative analysis of multiple angiosperm genomes has implicated gene duplication in the expansion and diversification of many gene families. However, empirical data and theory suggest that whole-genome and small-scale duplication events differ with respect to the types of genes preserved as
Clonal variation of Populus tremuloides responses to diurnal drought stress.
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We have developed an automated microprocessor controlled system for subjecting hydroponically grown plants to drought. Pumps and valves were used to move nutrient solutions into and out of a system of culture vessels in a growth chamber to provide periods of drought. Drought conditions were obtained
TUGAI: An integrated simulation tool for ecological assessment of alternative water management strategies in a degraded river delta.
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The development of ecologically sound water allocation strategies that account for the needs of riverine ecosystems is a pressing issue, especially in semiarid river basins. In the Aral Sea Basin, a search for strategies to mitigate ecological and socioeconomic deterioration has been in process
Survival and death of seeds during liquid nitrogen storage: a case study on seeds with short lifespans.
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BACKGROUND
The low temperature of liquid nitrogen is assumed to stop ageing and preserve viability indefinitely, however there are few validating data sets. The use of seeds to test these assumptions is important because other cryopreserved systems lack quantitative measures of viability to allow
Conserved noncoding sequences conserve biological networks and influence genome evolution.
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Comparative genomics approaches have identified numerous conserved cis-regulatory sequences near genes in plant genomes. Despite the identification of these conserved noncoding sequences (CNSs), our knowledge of their functional importance and selection remains limited. Here, we used a combination
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