ArticleScientific reports2022
Molecular cloning and functional analysis of a Chrysanthemum vestitum GME homolog that enhances drought tolerance in transgenic tobacco.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 9 citations in OpenAlex.
- Effects of low temperature stress on photosynthetic characteristics and antioxidant defense system of flue-cured tobacco.Frontiers in plant science · 2025Article
- Characterization of bZIP Transcription Factors in Transcriptome ofPlants (Basel, Switzerland) · 2024Article
- Advanced Biotechnological Interventions in Mitigating Drought Stress in Plants.Plants (Basel, Switzerland) · 2024Review
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7 authors at 1 institution in 1 country.
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Abstract
GDP-mannose 3, 5-epimerase (GME, EC 5.1.3.18), a key enzyme in the ascorbic acid synthesis pathway, catalyzes the conversion of GDP-D-mannose to GDP-l-galactose in higher plants. Here, a homolog of GME was isolated from Chrysanthemum vestitum. The cDNA sequence of CvGME was 1131 bp and contained a complete open reading frame encoding a protein comprising 376 amino acids. Quantitative real-time PCR analysis revealed that CvGME was most highly expressed in the stems and roots. Phylogenetic analysis showed that CvGME was closely related to LsGME from Lactuca sativa. Subcellular localization studies revealed that CvGME was localized in the nucleus. Heterologous expression of CvGME in transgenic tobacco plants increased the ascorbic acid content in the leaves. In addition, overexpression of CvGME reduced the malondialdehyde content and increased superoxide dismutase and peroxidase activity in tobacco leaves compared to those in the wild-type plants under drought stress conditions, explaining the increased drought tolerance of transgenic tobacco lines. These results suggest that CvGME can effectively enhance the tolerance of plants to drought by increasing the ascorbic acid content, which may help improve the drought tolerance of chrysanthemums through molecular breeding.
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