Exogenous Glycinebetaine Application Contributes to Abiotic Stress Tolerance in Maize

Plant growth and development are adversely affected by various environmental stresses. In this study, we investigated the possible function of glycinebetaine (GB) in improving abiotic stress tolerance in maize plants by exogenous application. Results indicated that GB application could effectively i...

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Bibliographic Details
Published in:Journal of plant biology = Singmul Hakhoe chi 2022, 65(6), , pp.517-529
Main Authors: Pei, Laming, Li, Hongmei, Zhou, Yuanyuan, Li, Weijun, Jiang, Yuhang, Li, Hui
Format: Article
Language:English
Subjects:
Abiotic stress
Abscisic acid
Biomedical and Life Sciences
Cold
Corn
Crop yield
Environmental stress
Enzymes
Experiments
Germination
Glycine betaine
Humidity
Leaves
Life Sciences
Oxidative stress
Plant Breeding/Biotechnology
Plant Ecology
Plant Genetics and Genomics
Plant growth
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Reactive oxygen species
Research Article
Salt
Scavenging
Seeds
Transcriptomes
생물학
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Summary:Plant growth and development are adversely affected by various environmental stresses. In this study, we investigated the possible function of glycinebetaine (GB) in improving abiotic stress tolerance in maize plants by exogenous application. Results indicated that GB application could effectively improve maize germination percentages, biomass weights and grain yield per plant under abiotic stresses. Moreover, GB-treated plants showed higher reactive oxygen species (ROS)-scavenging capacities, therefore less oxidative destruction than control plants under stresses. In addition, abscisic acid (ABA) levels were increased in GB-treated plants compared to control plants. The comparison of transcriptome profile was performed to analyze the possible mechanism underlying the enhanced tolerance mediated by GB. Many differentially expressed genes (DEGs) between GB-treated and control plants were found to be involved in responses to oxidative stress, abiotic stress and ABA. Taken together, these results indicated that GB might enhance abiotic stress tolerance in maize by regulating ROS-scavenging capacities and ABA-mediated stress-responsive pathways.
ISSN:1226-9239
1867-0725
DOI:10.1007/s12374-020-09265-3