- Merging Physiological and Genetic Approaches to Improve Abiotic Stress Resistance

2013 ◽  
pp. 254-287
Keyword(s):  
Abiotic Stress ◽  
Stress Resistance

Oxylipins and plant abiotic stress resistance

2014 ◽  
Vol 79 (4) ◽  
pp. 362-375 ◽  
Author(s):  
T. V. Savchenko ◽  
O. M. Zastrijnaja ◽  
V. V. Klimov
Keyword(s):  
Abiotic Stress ◽  
Stress Resistance ◽  
Plant Abiotic Stress

Antifungal Properties, Abiotic Stress Resistance, and Biocontrol Ability of Bacillus mojavensis PS17

2021 ◽  
Author(s):  
Roderic Gilles C. Diabankana ◽  
Daniel M. Afordoanyi ◽  
Radik I. Safin ◽  
Rustam M. Nizamov ◽  
Lilia Z. Karimova ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Stress Resistance ◽  
Bacillus Mojavensis ◽  
Antifungal Properties

Targeting Plant Hormones to Develop Abiotic Stress Resistance in Wheat

2019 ◽  
pp. 557-577 ◽  
Author(s):  
Ali Raza ◽  
Sundas Saher Mehmood ◽  
Javaria Tabassum ◽  
Raufa Batool
Keyword(s):  
Abiotic Stress ◽  
Plant Hormones ◽  
Stress Resistance

Application of pangenomics for wheat molecular breeding.

2021 ◽  
pp. 236-246
Author(s):  
Cassandria Tay Fernandez ◽  
Jacob Marsh ◽  
Mônica Furaste Danilevicz ◽  
Clémentine Mercé ◽  
David Edwards
Keyword(s):  
Abiotic Stress ◽  
Stress Resistance ◽  
Molecular Breeding ◽  
Genome Mapping ◽  
Global Environment ◽  
Wheat Cultivars ◽  
Wheat Varieties ◽  
Long Read ◽  
Beneficial Traits ◽  
Variable Genes

Abstract This chapter discusses the application of pangenomics for molecular breeding of wheat. Pangenomes can be used by both researchers and breeders alike to develop elite wheat cultivars through the discovery and integration of genetic variations associated with agronomically beneficial traits. By providing a reference that accommodates for variation in individuals, variants whose presence and/or absence control abiotic stress resistance and yield can be identified. This tool has only become more informative as more wheat varieties are sequenced, new sequencing approaches such as long-read sequencing and genome mapping are utilized, and tools for pangenomic analysis are developed. With pangenomics, variable genes from wild wheat relatives and related species can be used to optimize wheat molecular breeding and develop improved varieties tailored for the changing global environment.

scholarly journals Effects of Substrate-Binding Site Residues on the Biochemical Properties of a Tau Class Glutathione S-Transferase from Oryza sativa

Genes ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 25 ◽  
Author(s):  
Xue Yang ◽  
Jinchi Wei ◽  
Zhihai Wu ◽  
Jie Gao
Keyword(s):  
Amino Acids ◽  
Enzyme Activity ◽  
Abiotic Stress ◽  
Binding Site ◽  
Stress Responses ◽  
Stress Resistance ◽  
Substrate Binding ◽  
Biochemical Properties ◽  
Biotic And Abiotic Stress ◽  
Substrate Binding Site

Glutathione S-transferases (GSTs)—an especially plant-specific tau class of GSTs—are key enzymes involved in biotic and abiotic stress responses. To improve the stress resistance of crops via the genetic modification of GSTs, we predicted the amino acids present in the GSH binding site (G-site) and hydrophobic substrate-binding site (H-site) of OsGSTU17, a tau class GST in rice. We then examined the enzyme activity, substrate specificity, enzyme kinetics and thermodynamic stability of the mutant enzymes. Our results showed that the hydrogen bonds between Lys42, Val56, Glu68, and Ser69 of the G-site and glutathione were essential for enzyme activity and thermal stability. The hydrophobic side chains of amino acids of the H-site contributed to enzyme activity toward 4-nitrobenzyl chloride but had an inhibitory effect on enzyme activity toward 1-chloro-2,4-dinitrobenzene and cumene hydroperoxide. Different amino acids of the H-site had different effects on enzyme activity toward a different substrate, 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole. Moreover, Leu112 and Phe162 were found to inhibit the catalytic efficiency of OsGSTU17 to 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole, while Pro16, Leu112, and Trp165 contributed to structural stability. The results of this research enhance the understanding of the relationship between the structure and function of tau class GSTs to improve the abiotic stress resistance of crops.

scholarly journals Plastid Sulfate Transporters Open Doors to Abiotic Stress Resistance

2019 ◽  
Vol 180 (1) ◽  
pp. 12-13
Author(s):  
Charlotte M.M. Gommers
Keyword(s):  
Abiotic Stress ◽  
Stress Resistance

scholarly journals Effect of Selection for Pyrethroid Resistance on Abiotic Stress Tolerance in Aedes aegypti from Merida, Yucatan, Mexico

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 124
Author(s):  
Keenan Amer ◽  
Karla Saavedra-Rodriguez ◽  
William C. Black ◽  
Emilie M. Gray
Keyword(s):  
Life History ◽  
Abiotic Stress ◽  
Aedes Aegypti ◽  
Insecticide Resistance ◽  
Stress Resistance ◽  
Pyrethroid Resistance ◽  
Southern Mexico ◽  
Life History Parameters ◽  
Trade Offs ◽  
Selection For

The study of fitness costs of insecticide resistance mutations in Aedes aegypti has generally been focused on life history parameters such as fecundity, mortality, and energy reserves. In this study we sought to investigate whether trade-offs might also exist between insecticide resistance and other abiotic stress resistance parameters. We evaluated the effects of the selection for permethrin resistance specifically on larval salinity and thermal tolerance. A population of A. aegypti originally from Southern Mexico was split into two strains, one selected for permethrin resistance and the other not. Larvae were reared at different salinities, and the fourth instar larvae were subjected to acute thermal stress; then, survival to both stresses was compared between strains. Contrary to our predictions, we found that insecticide resistance correlated with significantly enhanced larval thermotolerance. We found no clear difference in salinity tolerance between strains. This result suggests that insecticide resistance does not necessarily carry trade-offs in all traits affecting fitness and that successful insecticide resistance management strategies must account for genetic associations between insecticide resistance and abiotic stress resistance, as well as traditional life history parameters.

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