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Bao J, Yang J, Lu X, Ma L, Shi X, Lan S, Zhao Y, Cao J, Ma S, Li S. Exogenous Melatonin Promotes Glucoraphanin Biosynthesis by Mediating Glutathione in Hairy Roots of Broccoli ( Brassica oleracea L. var. italica Planch). PLANTS (BASEL, SWITZERLAND) 2023; 13:106. [PMID: 38202414 PMCID: PMC10780497 DOI: 10.3390/plants13010106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/19/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024]
Abstract
To investigate the mechanism of melatonin (MT)-mediated glutathione (GSH) in promoting glucoraphanin (GRA) and sulforaphane (SF) synthesis, the gene expression pattern and protein content of hairy broccoli roots under MT treatment were analyzed by a combination of RNA-seq and tandem mass spectrometry tagging (TMT) techniques in this study. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that both proteins and mRNAs with the same expression trend were enriched in the "Glutathione metabolism (ko00480)" and "Proteasome (ko03050)" pathways, and most of the differentially expressed genes (DEGs) and differentially abundant proteins (DAPs) regulating the two pathways were downregulated. The results showed that endogenous GSH concentration and GR activity were increased in hairy roots after MT treatment. Exogenous GSH could promote the biosynthesis of GRA and SF, and both exogenous MT and GSH could upregulate the expression of the GSTF11 gene related to the sulfur transport gene, thus promoting the biosynthesis of GRA. Taken together, this study provides a new perspective to explore the complex molecular mechanisms of improving GRA and SF synthesis levels by MT and GSH regulation.
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Affiliation(s)
- Jinyu Bao
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.B.); (L.M.)
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
| | - Jie Yang
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
| | - Xu Lu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
| | - Lei Ma
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.B.); (L.M.)
| | - Xiaotong Shi
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
| | - Shimin Lan
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
| | - Yi Zhao
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
| | - Jie Cao
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
| | - Shaoying Ma
- Laboratory and Practice Base Management Center, Gansu Agricultural University, Lanzhou 730070, China
| | - Sheng Li
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.B.); (L.M.)
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (J.Y.); (X.S.); (S.L.); (Y.Z.); (J.C.)
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Yang S, Zhou Z, Zhang T, Zhang Q, Li R, Li J. Overexpression of BoLSU1 and BoLSU2 Confers Tolerance to Sulfur Deficiency in Arabidopsis by Manipulating Glucosinolate Metabolism. Int J Mol Sci 2023; 24:13520. [PMID: 37686325 PMCID: PMC10487721 DOI: 10.3390/ijms241713520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/17/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
Sulfur is an essential element for plant growth, development and resistance to environmental stresses. Glucosinolates (GSLs), a group of sulfur rich secondary metabolites found in Brassicaceae plants, are known for their defensive properties against pathogens and herbivores. Due to their integration of a large proportion of total sulfur, their biosynthesis and degradation are closely linked to sulfur metabolism. It has been demonstrated that GSLs can be broken down to release sulfur and facilitate the production of other thio-metabolites when the plant is under stress. However, the regulation of this process is still not fully understood. In this study, we constructed two broccoli LSU (low sulfur responsive) gene overexpressing lines, 35S::BoLSU1 and 35S::BoLSU2, to detect changes in GSL metabolism after sulfur deficiency treatment. The results showed that BoLSU1 and BoLSU2 inhibit the biosynthesis of aliphatic GSLs, while also promoting their degradation and increasing the content of glutathione (GSH), leading to the reallocation of sulfur from the GSL pool to other thio-metabolites such as GSH. Furthermore, this regulation of GSL metabolism mediated by BoLSU1 and BoLSU2 is found to be dependent on myrosinases BGLU28 and BGLU30. Our study provides insight into the physiological role of LSU proteins and their regulation of sulfur metabolism.
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Affiliation(s)
| | | | | | | | - Rui Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (S.Y.)
| | - Jing Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (S.Y.)
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