Xenogenomics: Bioprospecting for Genetic Determinants of Cold and Freezing Stress Tolerance in the Cryophilic Antarctic Hair Grass Deschampsia antarctica E. Desv

2007 ◽  
pp. 175-177
Author(s):  
U. P. John ◽  
R. M. Polotnianka ◽  
A. Sivakumaran ◽  
L. Mackin ◽  
M. J. Kuiper ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Freezing Stress ◽  
Deschampsia Antarctica ◽  
Genetic Determinants

Anthocyanin biosynthesis for cold and freezing stress tolerance and desirable color in Brassica rapa

2014 ◽  
Vol 15 (4) ◽  
pp. 383-394 ◽  
Author(s):  
Nasar Uddin Ahmed ◽  
Jong-In Park ◽  
Hee-Jeong Jung ◽  
Yoonkang Hur ◽  
Ill-Sup Nou
Keyword(s):  
Stress Tolerance ◽  
Brassica Rapa ◽  
Anthocyanin Biosynthesis ◽  
Freezing Stress

scholarly journals Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana

2019 ◽  
Vol 55 (No. 2) ◽  
pp. 73-80 ◽  
Author(s):  
Zlata V. Ogneva ◽  
Andrey R. Suprun ◽  
Alexandra S. Dubrovina ◽  
Konstantin V. Kiselev
Keyword(s):  
Arabidopsis Thaliana ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance ◽  
Survival Rates ◽  
Biomass Accumulation ◽  
Dna Demethylation ◽  
Freezing Stress ◽  
Dna Hypomethylation ◽  
Inducible Genes

The effect of 5-azacytidine (5A)-induced DNA hypomethylation on the growth and abiotic stress tolerance of Arabidopsis thaliana were analysed. Growth analysis revealed that aqueous solutions of 5A added to the soil did not affect the fresh and dry biomass accumulation but led to a higher percentage of flowering A. thaliana plants after four weeks of cultivation. The 5A treatment considerably lowered survival rates of Arabidopsis plants under high soil salinity, heat stress, and drought, while it did not affect the survival rates after freezing stress. 5A eliminated the stimulatory effect of the heat and drought stresses on the transcriptional levels of a number of stress-inducible genes, such as DREB1, LEA, SOS1, or RD29A. A less clear but similar trend has been detected for the effect of 5A on expression of the stress-inducible genes under salt and cold stresses. The data indicate that DNA methylation is an important mechanism regulating plant abiotic stress resistance.

scholarly journals Extremophyte adaptations to salt and water deficit stress

2016 ◽  
Vol 43 (7) ◽  
pp. v ◽  
Author(s):  
Simon Barak ◽  
Jill M. Farrant
Keyword(s):  
Stress Tolerance ◽  
Water Deficit ◽  
Extreme Environments ◽  
Plant Biology ◽  
Water Deficit Stress ◽  
Molecular Processes ◽  
Special Issue ◽  
Genetic Determinants ◽  
Sensitive Species ◽  
Plant Adaptations

Plants that can survive and even thrive in extreme environments (extremophytes) are likely treasure boxes of plant adaptations to environmental stresses. These species represent excellent models for understanding mechanisms of stress tolerance that may not be present in stress-sensitive species, as well as for identifying genetic determinants to develop stress-tolerant crops. This special issue of Functional Plant Biology focuses on physiological and molecular processes that enable extremophytes to naturally survive high levels of salt or desiccation.

Identification of a drought responsive gene encoding a nuclear protein involved in drought and freezing stress tolerance in Arabidopsis

2016 ◽  
Vol 60 (1) ◽  
pp. 105-112 ◽  
Author(s):  
H. -D. Moon ◽  
M. -S. Lee ◽  
S. -H. Kim ◽  
W. -J. Jeong ◽  
D. -W. Choi
Keyword(s):  
Stress Tolerance ◽  
Nuclear Protein ◽  
Freezing Stress ◽  
Gene Encoding ◽  
Responsive Gene

Transcription factor MdCBF1 gene increases freezing stress tolerance in transgenic Arabidopsis thaliana

2014 ◽  
Vol 58 (3) ◽  
pp. 499-506 ◽  
Author(s):  
Y. Xue ◽  
Y. Y. Wang ◽  
R. H. Peng ◽  
J. L. Zhen ◽  
B. Zhu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Stress Tolerance ◽  
Transgenic Arabidopsis ◽  
Freezing Stress ◽  
Transgenic Arabidopsis Thaliana

RELATIONSHIPS AMONG FREEZING, LOW TEMPERATURE FLOODING, AND ICE ENCASEMENT TOLERANCE IN ALFALFA

1990 ◽  
Vol 70 (1) ◽  
pp. 227-235 ◽  
Author(s):  
S. R. BOWLEY ◽  
B. D. McKERSIE
Keyword(s):  
Low Temperature ◽  
Environmental Stress ◽  
Stress Tolerance ◽  
Environmental Stresses ◽  
Freezing Stress ◽  
Yield Reduction ◽  
Ice Encasement ◽  
Medicago Sativa L ◽  
Selection For ◽  
The Relationship

In order to select cultivars with improved tolerance to environmental stresses, the relationship among tolerance to environmental stresses needs to be determined. This study evaluated 16 populations of alfafla for their tolerance to freezing (−8 to −16 °C), low temperature flooding (21 and 28 d), and ice encasement (10 and 14 d). Stresses were applied on field-grown plants excavated in November. Dry matter yield of the regrowth was determined 40 d following application of the stress. Two stands differing in plant ages (seeding year and first production year) over 2 yr were assessed. Seeding year plants were smaller in size, had fewer crown buds, lower moisture contents, and greater regrowth yields in the absence of stress. Regrowth yield was linearly related to stress level. Seeding year plants had greater absolute reductions in yield when subjected to freezing and icing stress, but less relative (to control) yield reduction when subjected to freezing stress compared to first production year plants. Plant age did not affect yield reduction of plants exposed to icing stress. Superiority index (Pi) ranking of the populations varied with environmental stress and was not correlated with moisture content, number of buds, or fall growth habit. Differential rankings of Pi among the freezing, flooding, and ice encasement stresses indicated that tolerance to one environmental stress will not necessarily give tolerance to other stresses. Selection for improved stress tolerance in alfalfa should be based on assessment of all stresses.Key words: Alfalfa, stress tolerance, environmental stress, Medicago sativa L.

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