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10 results for “Glycine betaine”
Stress amelioration response of glycine betaine and Arbuscular mycorrhizal fungi in sorghum under Cr toxicity
<p>In search of the solution to Cr toxicity a two-year pot experiment (completely randomized design with three replications), in three genetically different varieties of sorghum (SSG 59-3, HJ 513 and HJ 541) under Cr toxicity (2 and 4 ppm) was conducted to determine the effect of glycine betaine (50 and 100mM) and <i>Arbuscular mycorrhizal fungi</i> (AMF) on the antioxidant system (enzymes <i>viz.</i> superoxide dismutase, ascorbate peroxidase, catalase, glutathione reductase, peroxidase and metabolites <i>viz.</i> glutathione, ascorbate, proline, β-carotene) along with Cr accumulation and indices of oxidative stress parameters (polyphenol oxidase, hydrogen peroxide and malondialdehyde) at two growth stages (vegetative and grain filling). According to results; Cr stress (2 & 4 ppm) increased its accumulation and indices of oxidative stresses significantly (<i>p≤0.05</i>) in all varieties of sorghum at both growth stages. However, soil application of glycine betaine (GB) and AMF decreased Cr accumulation and indices of oxidative stress by increasing antioxidant enzymes and metabolites activities at both growth stages in all varieties. The combination of 100mM GB with AMF was observed most significant (<i>p≤0.05</i>) in decreasing oxidative stress and improved the antioxidant system's activities. The SSG 59-3 cultivar showed the lowest Cr accumulation indices of oxidative stress and highest antioxidant system's activity among these three cultivars at both growth stages. Thus, SSG 59-3 was found most tolerant cultivars followed by HJ 513 and then HJ 541. These findings suggest that both GB and AMF, either individually or combined can play a positive role to reduce oxidative stress and increased antioxidant attributes under Cr toxicity in sorghum.</p>
Stress amelioration response of glycine betaine and Arbuscular mycorrhizal fungi in sorghum under Cr toxicity
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Data from: The role of glycine betaine in range expansions; protecting mangroves against extreme freeze events
1. Due to a warming climate, mangrove populations within the Gulf of Mexico and along the Florida Atlantic coastline are expanding their range poleward. As mangroves expand their range limit, leading edge individuals are more likely to experience an increased incidence of freeze events. However, we still lack a clear understanding of the mechanisms used by mangroves to survive freezing conditions. 2. Here, we conducted common garden experiments at different locations experiencing variable winter freeze conditions to show glycine betaine, an organic osmolyte, increases significantly with freeze exposure, playing an important role in the freeze tolerance of Avicennia germinans, a widespread Neotropical mangrove. 3. We found glycine betaine accumulation was similar across all source populations and freeze exposure locations, suggesting glycine betaine is not a range limit adaptation and is instead used for freeze tolerance by A. germinans irrespective of source population. Plants sourced from populations that experience freezing conditions exhibited greater rates of survival, indicating range edge populations of A. germinans have other heritable adaptations in addition to glycine betaine for freeze tolerance. 4. Synthesis. Continued mangrove expansion poleward will result in a greater incidence of freeze events for individuals at the leading edge. Our findings suggest freeze tolerance in this species may be genetically based and that leading edge A. germinans have the potential to survive extreme freeze events and recover post-freeze, allowing for their continued expansion poleward. This process of selective survival may act to promote adaptation of freeze tolerance in range edge populations.
Data from: The role of glycine betaine in range expansions; protecting mangroves against extreme freeze events
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Global transcriptome analyses and intracellular regulatory mechanisms of glycine betaine and mycosporine-2-glycine expression in the halotolerant cyanobacterium Halothece sp. PCC 7418 exposed to abiot
GEO Series GSE206286. Halothece sp. PCC 7418. 7 samples. Type: Expression profiling by high throughput sequencing.
Gene regulation in Bacillus subtilis by the compatible solute glycine betaine
GEO Series GSE17435. Bacillus subtilis. 12 samples. Type: Expression profiling by array.
Impact of high salinity and the compatible solute glycine betaine on global gene expression of Bacillus subtilis
GEO Series GSE145124. Bacillus subtilis; Bacillus subtilis subsp. subtilis str. 168. 12 samples. Type: Expression profiling by array.
Influence of glycine betaine on the transcriptional profile of the Bacillus subtilis SigB regulon
GEO Series GSE141882. Bacillus subtilis; Bacillus subtilis subsp. subtilis str. 168. 8 samples. Type: Expression profiling by array.
Effect of NaCl concentration on the transcriptional network of E. coli in glucose minimal medium with glycine betaine
GEO Series GSE54512. Escherichia coli K-12; Escherichia coli CFT073; Escherichia coli O157:H7 str. EDL933; Escherichia coli str. K-12 substr. MG1655; Escherichia coli O157:H7 str. Sakai. 6 samples. Type: Expression profiling by array.
Global transcriptome analyses and intracellular regulatory mechanisms of glycine betaine and mycosporine-2-glycine expression in the halotolerant cyanobacterium Halothece sp. PCC 7418 exposed to abiot
GEO Series GSE207763. Halothece sp. PCC 7418. 2 samples. Type: Expression profiling by high throughput sequencing.
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