Hydrogen sulphide alleviates iron deficiency by promoting iron availability and plant hormone levels in Glycine max seedlings
Autor: | Ni-Na Zhang, Zhouping Shangguan, Qing Pan, Xue-Yuan Lin, Gehong Wei, Jianhua Zhang, Juan Chen |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
0301 basic medicine Chlorophyll Iron Plant Science Reductase Sulfides Photosynthesis 01 natural sciences Plant Roots Iron assimilation 03 medical and health sciences Plant Growth Regulators Gene Expression Regulation Plant lcsh:Botany Plant hormones Homeostasis Biomass Hydrogen Sulfide Plant Diseases chemistry.chemical_classification Chlorosis biology Gene Expression Profiling Iron deficiency fungi food and beverages biology.organism_classification equipment and supplies Apoplast lcsh:QK1-989 Horticulture Hydrogen sulphide (H2S) 030104 developmental biology chemistry Soybean (Glycine max) Seedling Seedlings Plant hormone Soybeans Organic acid Sulfur 010606 plant biology & botany Research Article |
Zdroj: | BMC Plant Biology, Vol 20, Iss 1, Pp 1-22 (2020) BMC Plant Biology |
ISSN: | 1471-2229 |
Popis: | Background Hydrogen sulphide (H2S) is involved in regulating physiological processes in plants. We investigated how H2S ameliorates iron (Fe) deficiency in soybean (Glycine max L.) seedlings. Multidisciplinary approaches including physiological, biochemical and molecular, and transcriptome methods were used to investigate the H2S role in regulating Fe availability in soybean seedlings. Results Our results showed that H2S completely prevented leaf interveinal chlorosis and caused an increase in soybean seedling biomass under Fe deficiency conditions. Moreover, H2S decreased the amount of root-bound apoplastic Fe and increased the Fe content in leaves and roots by regulating the ferric-chelate reductase (FCR) activities and Fe homeostasis- and sulphur metabolism-related gene expression levels, thereby promoting photosynthesis in soybean seedlings. In addition, H2S changed the plant hormone concentrations by modulating plant hormone-related gene expression abundances in soybean seedlings grown in Fe-deficient solution. Furthermore, organic acid biosynthesis and related genes expression also played a vital role in modulating the H2S-mediated alleviation of Fe deficiency in soybean seedlings. Conclusion Our results indicated that Fe deficiency was alleviated by H2S through enhancement of Fe acquisition and assimilation, thereby regulating plant hormones and organic acid synthesis in plants. |
Databáze: | OpenAIRE |
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