نتایج جستجو برای: abiotic factors

تعداد نتایج: 1089815  

2016
Amit K. Tripathi Ashwani Pareek Sneh Lata Singla-Pareek

Modulation of gene expression is one of the most significant molecular mechanisms of abiotic stress response in plants. Via altering DNA accessibility, histone chaperones affect the transcriptional competence of genomic loci. However, in contrast to other factors affecting chromatin dynamics, the role of plant histone chaperones in abiotic stress response and adaptation remains elusive. Here, w...

Journal: :Plant physiology 2016
Amit K Tripathi Ashwani Pareek Sneh Lata Singla-Pareek

Modulation of gene expression is one of the most significant molecular mechanisms of abiotic stress response in plants. Via altering DNA accessibility, histone chaperones affect the transcriptional competence of genomic loci. However, in contrast to other factors affecting chromatin dynamics, the role of plant histone chaperones in abiotic stress response and adaptation remains elusive. Here, w...

Journal: :Genome 2005
Willem Rensink Amy Hart Jia Liu Shu Ouyang Victoria Zismann C Robin Buell

To further increase our understanding of responses in potato to abiotic stress and the potato transcriptome in general, we generated 20 756 expressed sequence tags (ESTs) from a cDNA library constructed by pooling mRNA from heat-, cold-, salt-, and drought-stressed potato leaves and roots. These ESTs were clustered and assembled into a collection of 5240 unique sequences with 3344 contigs and 1...

2016
Andy Pereira

The challenges of abiotic stress on plant growth and development are evident among the emerging ecological impacts of climate change (Bellard et al., 2012), and the constraints to crop production exacerbated with the increasing human population competing for environmental resources (Wallace et al., 2003). Climate change is predicted to affect agricultural production the most, primarily at low l...

2016
Zhulong Chan Ken Yokawa Woe-Yeon Kim Chun-Peng Song

Plants frequently encounter a combination of abiotic stresses in their natural habitats. Abiotic stresses, including drought, salt, cold, heat, and heavy metal etc., modulate phytohormone metabolism and enhance expression level of transcription factors which activate stress responsive genes. During plant stress response, reactive oxygen species (ROS) act as important molecules and play pivotal ...

Journal: :Journal of experimental botany 2016
Walter Gassmann Heidi M Appel Melvin J Oliver

Organisms are under strong selection to respond adaptively to environmental stress, even when different stresses occur simultaneously or in rapid succession, as they often do in natural environments. However, at a molecular level, stress responses are often studied in isolation and under controlled growth conditions. This leaves us with an ever-finer picture of single stress responses but littl...

2017
Sevgi Marakli Nermin Gozukirmizi

This chapter covers the advances in establishment and optimization of brassinoste‐ roids (BRs) in the alleviation of abiotic stresses such as water, salinity, temperature, and heavy metals in plant system, especially roots. Plant roots regulate their develop‐ mental and physiological processes in response to various internal and external stim‐ uli. Studies are in progress to improve plant root ...

2005
JANIE WULFF

A combination of transplant experiments and provision of recruitment surfaces has been initiated to determine the degree to which differences in sponge diversity and species composition at two Twin Cays sites, Hidden Creek and Sponge Haven, reflect differences in abiotic factors, ecological interactions, and recruitment history. This report contains the first stages of this project. The Hidden ...

2016

Topics covered: 1. Conceptual framework – agents of pattern formation. 2. Abiotic factors – geology, geomorphology, hydrology, soils. 3. Climatic factors – temperature, precipitation, solar radiation, meteorology. 4. Climate-landform effects on vegetation pattern, ecological flows, disturbance regimes and geomorphological processes. 5. Resource management implications – climate change scenarios...

Journal: :Journal of biological dynamics 2007
Shandelle M Henson Joseph G Galusha James L Hayward J M Cushing

In previous studies we developed a general compartmental methodology for modeling animal behavior and applied the methodology to marine birds and mammals. In this study we used the methodology to construct a system of two differential equations to model the dynamics of territory attendance and preening in a gull colony on Protection Island, Strait of Juan de Fuca, Washington. We found that colo...

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