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Liu S, Long J, Zhang L, Gao J, Dong T, Wang Y, Peng C. Arabidopsis sucrose transporter 4 (AtSUC4) is involved in high sucrose-mediated inhibition of root elongation. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2101942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- Siwen Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, PR China
| | - Jianmei Long
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, PR China
| | - Liding Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, PR China
| | - Jiayu Gao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, PR China
| | - Tiantian Dong
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, PR China
| | - Ying Wang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, PR China
| | - Changcao Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, PR China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, PR China
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Liao L, Cheng Y, Liu S, Zhou J, An S, Lv M, Chen Y, Gu Y, Chen S, Zhang LH. Production of novel antibiotics zeamines through optimizing Dickeya zeae fermentation conditions. PLoS One 2014; 9:e116047. [PMID: 25541733 PMCID: PMC4277462 DOI: 10.1371/journal.pone.0116047] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 11/30/2014] [Indexed: 01/20/2023] Open
Abstract
Dickeya zeae strain EC1 was recently shown to produce a new type of phytotoxins designated as zeamine and zeamine II, which are potent wide-spectrum antibiotics against Gram-positive and Gram-negative bacterial pathogens, suggesting their promising potential as clinical medicines. In this study, the optimized medium composition and culture conditions for biosynthesis of novel antibiotics zeamines have been established by using response surface methodology, largely increasing the yield of zeamines from original about 7.35 µg · mL(-1) in minimal medium to about 150 µg · mL(-1) in LS5 medium. The study identified the major factors contributing to zeamines production, which include nitrate, sucrose, asparaginate, mineral elements Mg2+ and K+, and optimized amount of phosphate. In addition, the results showed that overexpression of zmsK in D. zeae strain EC1 could further increase zeamines yield to about 180 µg · mL(-1) in LS5 medium. The findings from this study could facilitate further characterization and utilization of these two novel antibiotics, and also provide useful clues for understanding the regulatory mechanisms that govern D. zeae virulence.
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Affiliation(s)
- Lisheng Liao
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Yingying Cheng
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Shiyin Liu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Jianuan Zhou
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Shuwen An
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Mingfa Lv
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Yufan Chen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Yanfang Gu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
| | - Shaohua Chen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
- * E-mail: (SC); (LHZ)
| | - Lian-Hui Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Peoples' Republic of China
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Republic of Singapore
- * E-mail: (SC); (LHZ)
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Jia H, Wang Y, Sun M, Li B, Han Y, Zhao Y, Li X, Ding N, Li C, Ji W, Jia W. Sucrose functions as a signal involved in the regulation of strawberry fruit development and ripening. THE NEW PHYTOLOGIST 2013; 198:453-465. [PMID: 23425297 DOI: 10.1111/nph.12176] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 01/07/2013] [Indexed: 05/04/2023]
Abstract
Fleshy fruits are classically divided into climacteric and nonclimacteric types. It has long been thought that the ripening of climacteric and nonclimacteric fruits is regulated by ethylene and abscisic acid (ABA), respectively. Here, we report that sucrose functions as a signal in the ripening of strawberry (Fragaria × ananassa), a nonclimacteric fruit. Pharmacological experiments, as well as gain- and loss-of-function studies, were performed to demonstrate the critical role of sucrose in the regulation of fruit ripening. Fruit growth and development were closely correlated with a change in sucrose content. Exogenous sucrose and its nonmetabolizable analog, turanose, induced ABA accumulation in fruit and accelerated dramatically fruit ripening. A set of sucrose transporters, FaSUT1-7, was identified and characterized, among which FaSUT1 was found to be a major component responsible for sucrose accumulation during fruit development. RNA interference-induced silencing of FaSUT1 led to a decrease in both sucrose and ABA content, and arrested fruit ripening. By contrast, overexpression of FaSUT1 led to an increase in both sucrose and ABA content, and accelerated fruit ripening. In conclusion, this study demonstrates that sucrose is an important signal in the regulation of strawberry fruit ripening.
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Affiliation(s)
- Haifeng Jia
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yuanhua Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Mingzhu Sun
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Bingbing Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yu Han
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yanxia Zhao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xingliang Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ning Ding
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Chen Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Wenlong Ji
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Wensuo Jia
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
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Tognetti JA, Pontis HG, Martínez-Noël GM. Sucrose signaling in plants: a world yet to be explored. PLANT SIGNALING & BEHAVIOR 2013; 8:e23316. [PMID: 23333971 PMCID: PMC3676498 DOI: 10.4161/psb.23316] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 12/17/2012] [Indexed: 05/18/2023]
Abstract
The role of sucrose as a signaling molecule in plants was originally proposed several decades ago. However, recognition of sucrose as a true signal has been largely debated and only recently this role has been fully accepted. The best-studied cases of sucrose signaling involve metabolic processes, such as the induction of fructan or anthocyanin synthesis, but a large volume of scattered information suggests that sucrose signals may control a vast array of developmental processes along the whole life cycle of the plant. Also, wide gaps exist in our current understanding of the intracellular steps that mediate sucrose action. Sucrose concentration in plant tissues tends to be directly related to light intensity, and inversely related to temperature, and accordingly, exogenous sucrose supply often mimics the effect of high light and cold. However, many exceptions to this rule seem to occur due to interactions with other signaling pathways. In conclusion, the sucrose role as a signal molecule in plants is starting to be unveiled and much research is still needed to have a complete map of its significance in plant function.
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Affiliation(s)
- Jorge A. Tognetti
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC); Buenos Aires, Argentina
- Facultad de Ciencias Agrarias; Universidad Nacional de Mar del Plata; Buenos Aires, Argentina
| | - Horacio G. Pontis
- Fundación para Investigaciones Biológicas Aplicadas; Buenos Aires, Argentina
| | - Giselle M.A. Martínez-Noël
- Fundación para Investigaciones Biológicas Aplicadas; Buenos Aires, Argentina
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Buenos Aires, Argentina
- Correspondence to: Giselle M.A. Martínez-Noël,
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Tang C, Huang D, Yang J, Liu S, Sakr S, Li H, Zhou Y, Qin Y. The sucrose transporter HbSUT3 plays an active role in sucrose loading to laticifer and rubber productivity in exploited trees of Hevea brasiliensis (para rubber tree). PLANT, CELL & ENVIRONMENT 2010; 33:1708-20. [PMID: 20492551 DOI: 10.1111/j.1365-3040.2010.02175.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Efficient sucrose loading in rubber-producing cells (laticifer cells) is essential for retaining rubber productivity in Hevea brasiliensis, but the molecular mechanisms underlying the regulation of this process remain unknown. Here, we functionally characterized a putative Hevea SUT member, HbSUT3, mainly in samples from regularly exploited trees. When expressed in yeast, HbSUT3 encodes a functional sucrose transporter that exhibits high sucrose affinity with a K(m) value of 1.24 mm at pH 4.0, and possesses features typical of sucrose/H(+) symporters. In planta, when compared to the expression of other Hevea SUT genes, HbSUT3 was found to be the predominant member expressed in the rubber-containing cytoplasm (latex) of laticifers. The comparison of HbSUT3 expression among twelve Hevea tissues demonstrates a relatively tissue-specific pattern, i.e. expression primarily in the latex and in female flowers. HbSUT3 expression is induced by the latex stimulator Ethrel (an ethylene generator), and relates to its yield-stimulating effect. Tapping (the act of rubber harvesting) markedly increased the expression of HbSUT3, whereas wounding alone had little effect. Moreover, the expression of HbSUT3 was found to be positively correlated with latex yield. Taken together, our results provide evidence favouring the involvement of HbSUT3 in sucrose loading into laticifers and in rubber productivity.
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Affiliation(s)
- Chaorong Tang
- Key Lab of Rubber Biology, Ministry of Agriculture & Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, College of Agronomy, Hainan University, Danzhou, Hainan 571737, China.
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Guan Y, Ren H, Xie H, Ma Z, Chen F. Identification and characterization of bZIP-type transcription factors involved in carrot (Daucus carota L.) somatic embryogenesis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2009; 60:207-17. [PMID: 19519801 DOI: 10.1111/j.1365-313x.2009.03948.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Seed dormancy is an important adaptive trait that enables seeds of many species to remain quiescent until conditions become favorable for germination. Abscisic acid (ABA) plays an important role in these developmental processes. Like dormancy and germination, the elongation of carrot somatic embryo radicles is retarded by sucrose concentrations at or above 6%, and normal growth resumes at sucrose concentrations below 3%. Using a yeast one-hybrid screening system, we isolated two bZIP-type transcription factors, CAREB1 and CAREB2, from a cDNA library prepared from carrot somatic embryos cultured in a high-sucrose medium. Both CAREB1 and CAREB2 were localized to the nucleus, and specifically bound to the ABA response element (ABRE) in the Dc3 promoter. Expression of CAREB2 was induced in seedlings by drought and exogenous ABA application; whereas expression of CAREB1 increased during late embryogenesis, and reduced dramatically when somatic embryos were treated with fluridone, an inhibitor of ABA synthesis. Overexpression of CAREB1 caused somatic embryos to develop slowly when cultured in low-sucrose medium, and retarded the elongation of the radicles. These results indicate that CAREB1 and CAREB2 have similar DNA-binding activities, but play different roles during carrot development. Our results indicate that CAREB1 functions as an important trans-acting factor in the ABA signal transduction pathway during carrot somatic embryogenesis.
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Affiliation(s)
- Yucheng Guan
- National Centre for Plant Gene Research, Key Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
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Abstract
Plants, restricted by their environment, need to integrate a wide variety of stimuli with their metabolic activity, growth and development. Sugars, generated by photosynthetic carbon fixation, are central in coordinating metabolic fluxes in response to the changing environment and in providing cells and tissues with the necessary energy for continued growth and survival. A complex network of metabolic and hormone signaling pathways are intimately linked to diverse sugar responses. A combination of genetic, cellular and systems analyses have uncovered nuclear HXK1 (hexokinase1) as a pivotal and conserved glucose sensor, directly mediating transcription regulation, while the KIN10/11 energy sensor protein kinases function as master regulators of transcription networks under sugar and energy deprivation conditions. The involvement of disaccharide signals in the regulation of specific cellular processes and the potential role of cell surface receptors in mediating sugar signals add to the complexity. This chapter gives an overview of our current insight in the sugar sensing and signaling network and describes some of the molecular mechanisms involved.
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Affiliation(s)
- Matthew Ramon
- Department of Molecular Biology, Massachusetts General Hospital, Department of Genetics, Harvard Medical School, Boston, Massachusetts 02114
| | - Filip Rolland
- Department of Biology, Institute of Botany and Microbiology, K.U. Leuven, Kasteelpark Arenberg 31, 3001, Heverlee, Belgium
| | - Jen Sheen
- Department of Molecular Biology, Massachusetts General Hospital, Department of Genetics, Harvard Medical School, Boston, Massachusetts 02114
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Baroja-Fernandez E, Etxeberria E, Muñoz FJ, Morán-Zorzano MT, Alonso-Casajús N, Gonzalez P, Pozueta-Romero J. An important pool of sucrose linked to starch biosynthesis is taken up by endocytosis in heterotrophic cells. PLANT & CELL PHYSIOLOGY 2006; 47:447-56. [PMID: 16434435 DOI: 10.1093/pcp/pcj011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We have recently shown the occurrence of endocytic sucrose uptake in heterotrophic cells. Whether this mechanism is involved in the sucrose-starch conversion process was investigated by comparing the rates of starch accumulation in sycamore cells cultured in the presence or absence of the endocytic inhibitors wortmannin and 2-(4-morpholynyl-)-8-phenyl-4H-1 benzopyran-4-1 (LY294002). These analyses revealed a two-phase process involving an initial 120 min wortmannin- and LY294002-insensitive starch accumulation period, followed by a prolonged phase that was arrested by the endocytic inhibitors. Both wortmannin and LY294002 led to a strong reduction of the intracellular levels of both sucrose and the starch precursor molecule, ADPglucose. No changes in maximum catalytic activities of enzymes closely linked to starch and sucrose metabolism occurred in cells cultured with endocytic inhibitors. In addition, starch accumulation was unaffected by endocytic inhibitors when cells were cultured with glucose. These results provide a first indication that an important pool of sucrose incorporated into the cell is taken up by endocytosis prior to its subsequent conversion into starch in heterotrophic cells. This conclusion was substantiated further by experiments showing that sucrose-starch conversion was strongly prevented by both wortmannin and LY294002 in both potato tuber discs and developing barley endosperms.
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Affiliation(s)
- Edurne Baroja-Fernandez
- Agrobioteknologia Instituta, Nafarroako Unibertsitate Publikoa, Gobierno de Navarra and Consejo Superior de Investigaciones Científicas, Mutiloako etorbidea zenbaki gabe, 31192 Mutiloabeti, Nafarroa, Spain
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Hajduch M, Ganapathy A, Stein JW, Thelen JJ. A systematic proteomic study of seed filling in soybean. Establishment of high-resolution two-dimensional reference maps, expression profiles, and an interactive proteome database. PLANT PHYSIOLOGY 2005; 137:1397-419. [PMID: 15824287 PMCID: PMC1088330 DOI: 10.1104/pp.104.056614] [Citation(s) in RCA: 242] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2004] [Revised: 12/29/2004] [Accepted: 12/30/2004] [Indexed: 05/18/2023]
Abstract
A high-throughput proteomic approach was employed to determine the expression profile and identity of hundreds of proteins during seed filling in soybean (Glycine max) cv Maverick. Soybean seed proteins were analyzed at 2, 3, 4, 5, and 6 weeks after flowering using two-dimensional gel electrophoresis and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. This led to the establishment of high-resolution proteome reference maps, expression profiles of 679 spots, and corresponding matrix-assisted laser desorption ionization time-of-flight mass spectrometry spectra for each spot. Database searching with these spectra resulted in the identification of 422 proteins representing 216 nonredundant proteins. These proteins were classified into 14 major functional categories. Proteins involved in metabolism, protein destination and storage, metabolite transport, and disease/defense were the most abundant. For each functional category, a composite expression profile is presented to gain insight into legume seed physiology and the general regulation of proteins associated with each functional class. Using this approach, an overall decrease in metabolism-related proteins versus an increase in proteins associated with destination and storage was observed during seed filling. The accumulation of unknown proteins, sucrose transport and cleavage enzymes, cysteine and methionine biosynthesis enzymes, 14-3-3-like proteins, lipoxygenases, storage proteins, and allergenic proteins during seed filling is also discussed. A user-intuitive database (http://oilseedproteomics.missouri.edu) was developed to access these data for soybean and other oilseeds currently being investigated.
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Affiliation(s)
- Martin Hajduch
- Department of Biochemistry, Life Sciences Center, University of Missouri, Columbia, Missouri 65211, USA
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Gibson SI. Control of plant development and gene expression by sugar signaling. CURRENT OPINION IN PLANT BIOLOGY 2005; 8:93-102. [PMID: 15653406 DOI: 10.1016/j.pbi.2004.11.003] [Citation(s) in RCA: 342] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Coordination of development with the availability of nutrients, such as soluble sugars, may help ensure an adequate supply of building materials and energy with which to carry out specific developmental programs. For example, in-vivo and in-vitro experiments suggest that increasing sugar levels delay seed germination and stimulate the induction of flowering and senescence in at least some plant species. Higher sugar concentrations can also increase the number of tubers formed by potatoes and can stimulate the formation of adventitious roots by Arabidopsis. New insights into the mechanisms by which sugar-response pathways interact with other response pathways have been provided by microarray experiments examining sugar-regulated gene expression under different light and nitrogen conditions.
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Affiliation(s)
- Susan I Gibson
- Department of Plant Biology, University of Minnesota, 122 Cargill Building, 1500 Gortner Avenue, St. Paul, Minnesota 55108-1095, USA.
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