1
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Fu W, Zhao L, Qiu W, Xu X, Ding M, Lan L, Qu S, Wang S. Whole-genome resequencing identifies candidate genes and allelic variation in the MdNADP-ME promoter that regulate fruit malate and fructose contents in apple. PLANT COMMUNICATIONS 2024; 5:100973. [PMID: 38751120 DOI: 10.1016/j.xplc.2024.100973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/29/2024] [Accepted: 05/10/2024] [Indexed: 06/23/2024]
Abstract
Soluble sugar and organic acids are key determinants of fruit organoleptic quality and directly affect the commodity value and economic returns of fruit crops. We performed whole-genome sequencing of the apple varieties Gala and Xiahongrou, along with their F1 hybrids, to construct a high-density bin map. Our quantitative genetic analysis pinpointed 53 quantitative trait loci (QTLs) related to 11 sugar and acid traits. We identified a candidate gene, MdNADP-ME, responsible for malate degradation, in a stable QTL on linkage group 15. Sequence analysis revealed an A/C SNP in the promoter region (MEp-799) that influences binding of the MdMYB2 transcription factor, thereby affecting MdNADP-ME expression. In our study of various apple genotypes, this SNP has been demonstrated to be linked to malate and fructose levels. We also developed a dCAPS marker associated with fruit fructose content. These results substantiate the role of MdNADP-ME in maintaining the equilibrium between sugar and acid contents in apple fruits.
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Affiliation(s)
- Weihong Fu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Lin Zhao
- Xuzhou Institute of Agricultural Sciences in Xuhuai Region of Jiangsu, Xuzhou 221131, China
| | - Wanjun Qiu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xu Xu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Meng Ding
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Liming Lan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shenchun Qu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Sanhong Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
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2
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Nie X, Hong C, Wang Q, Lu M, An H. Sugar composition and transcriptome analysis in developing 'Fengtang' plum (Prunus salicina Lindl.) reveal candidate genes regulating sugar accumulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107955. [PMID: 37603969 DOI: 10.1016/j.plaphy.2023.107955] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023]
Abstract
Sweetness is an important attribute of fruit quality, which directly affects consumers' preference for fresh fruit and is mostly determined by carbohydrate composition. 'Fengtang' plum (Prunus salicina Lindl.) is recognized for its high soluble sugar content, but the sugar composition and the molecular mechanisms underlying sugar overproduction are not fully understood. In this work, the sugar components were analyzed using gas chromatography-mass spectrometry combined with transcription profiles from RNA-sequencing and Quantitative Real-time PCR during fruit development. The target metabolic group showed that sucrose was the dominant sugar component in mature fruit, followed by glucose, fructose, and sorbitol. Based on the transcriptome data and qRT-PCR validation, we identified 12 key structural genes that significantly responded to corresponding component accumulation: sucrose synthase (PsSUS4), sucrose phosphate synthase (PsSPS2), neutral invertase (PsNINV1/3/4), phosphoglucomutase (PsPGM1), UTP-glucose-1-phosphate uridylyl transferase (PsUGP1/2), hexose kinase (PsHXK1/3), sugar transport protein (PsSTP1), and Sugars Will Eventually be Exported Transporter (PsSWEET4). In which PsSUS4 and PsSPS2, whose encoding proteins immediately catalyze sucrose synthesis, were selected to be silenced using the virus-induced gene silencing technology. Silencing of PsSUS4 or PsSPS2 resulted in decreased sucrose content by 27.6% and 8%, respectively, compared with the control, verifying their important roles in sucrose accumulation. Subsequently, sugar metabolism networks in this high-sugar plum were constructed with 12 key structural genes, 72 putative transcription factors, and 4 major sugar components. These results might facilitate a better understanding of the molecular mechanisms of sugar accumulation in 'Fengtang' plum and provide a framework for future fruit quality improvement.
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Affiliation(s)
- Xiaoshuang Nie
- Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Chen Hong
- Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Qiyu Wang
- Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Min Lu
- Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Huaming An
- Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, 550025, People's Republic of China.
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3
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Taboada J, González-Gordo S, Muñoz-Vargas MA, Palma JM, Corpas FJ. NADP-Dependent Malic Enzyme Genes in Sweet Pepper Fruits: Involvement in Ripening and Modulation by Nitric Oxide (NO). PLANTS (BASEL, SWITZERLAND) 2023; 12:2353. [PMID: 37375977 DOI: 10.3390/plants12122353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/01/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023]
Abstract
NADPH is an indispensable cofactor in a wide range of physiological processes that is generated by a family of NADPH dehydrogenases, of which the NADP-dependent malic enzyme (NADP-ME) is a member. Pepper (Capsicum annuum L.) fruit is a horticultural product consumed worldwide that has great nutritional and economic relevance. Besides the phenotypical changes that pepper fruit undergoes during ripening, there are many associated modifications at transcriptomic, proteome, biochemical and metabolic levels. Nitric oxide (NO) is a recognized signal molecule with regulatory functions in diverse plant processes. To our knowledge, there is very scarce information about the number of genes encoding for NADP-ME in pepper plants and their expression during the ripening of sweet pepper fruit. Using a data mining approach to evaluate the pepper plant genome and fruit transcriptome (RNA-seq), five NADP-ME genes were identified, and four of them, namely CaNADP-ME2 to CaNADP-ME5, were expressed in fruit. The time course expression analysis of these genes during different fruit ripening stages, including green immature (G), breaking point (BP) and red ripe (R), showed that they were differentially modulated. Thus, while CaNADP-ME3 and CaNADP-ME5 were upregulated, CaNADP-ME2 and CaNADP-ME4 were downregulated. Exogenous NO treatment of fruit triggered the downregulation of CaNADP-ME4. We obtained a 50-75% ammonium-sulfate-enriched protein fraction containing CaNADP-ME enzyme activity, and this was assayed via non-denaturing polyacrylamide gel electrophoresis (PAGE). The results allow us to identify four isozymes designated from CaNADP-ME I to CaNADP-ME IV. Taken together, the data provide new pieces of information on the CaNADP-ME system with the identification of five CaNADP-ME genes and how the four genes expressed in pepper fruits are modulated during ripening and exogenous NO gas treatment.
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Affiliation(s)
- Jorge Taboada
- Department of Stress, Development and Signaling in Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín (Spanish National Research Council, CSIC), C/Profesor Albareda, 1, 18008 Granada, Spain
| | - Salvador González-Gordo
- Department of Stress, Development and Signaling in Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín (Spanish National Research Council, CSIC), C/Profesor Albareda, 1, 18008 Granada, Spain
| | - María A Muñoz-Vargas
- Department of Stress, Development and Signaling in Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín (Spanish National Research Council, CSIC), C/Profesor Albareda, 1, 18008 Granada, Spain
| | - José M Palma
- Department of Stress, Development and Signaling in Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín (Spanish National Research Council, CSIC), C/Profesor Albareda, 1, 18008 Granada, Spain
| | - Francisco J Corpas
- Department of Stress, Development and Signaling in Plants, Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Estación Experimental del Zaidín (Spanish National Research Council, CSIC), C/Profesor Albareda, 1, 18008 Granada, Spain
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4
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Yang M, Hou G, Peng Y, Wang L, Liu X, Jiang Y, He C, She M, Zhao M, Chen Q, Li M, Zhang Y, Lin Y, Zhang Y, Wang Y, He W, Wang X, Tang H, Luo Y. FaGAPC2/FaPKc2.2 and FaPEPCK reveal differential citric acid metabolism regulation in late development of strawberry fruit. FRONTIERS IN PLANT SCIENCE 2023; 14:1138865. [PMID: 37082348 PMCID: PMC10110876 DOI: 10.3389/fpls.2023.1138865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 02/28/2023] [Indexed: 05/03/2023]
Abstract
Citric acid is the primary organic acid that affects the taste of strawberry fruit. Glycolysis supplies key substrates for the tricarboxylic acid cycle (TCA cycle). However, little is known about the regulatory mechanisms of glycolytic genes on citric acid metabolism in strawberry fruits. In this study, the citric acid content of strawberry fruit displayed a trend of rising and decreasing from the initial red stage to the full red stage and then dark red stage. Thus, a difference in citric acid metabolic regulation was suspected during strawberry fruit development. In addition, overexpression of either cytoplasm glyceraldehyde-3-phosphate dehydrogenase (FxaC_14g13400, namely FaGAPC2) or pyruvate kinase (FxaC_15g00080, namely FaPKc2.2) inhibited strawberry fruit ripening and the accumulation of citric acid, leading to a range of maturity stages from partial red to full red stage. The combined transcriptome and metabolome analysis revealed that overexpression of FaGAPC2 and FaPKc2.2 significantly suppressed the expression of phosphoenolpyruvate carboxykinase (FxaC_1g21491, namely FaPEPCK) but enhanced the content of glutamine and aspartic acid. Meanwhile, the activities of PEPCK and glutamate decarboxylase (GAD) were inhibited, but the activities of glutamine synthase (GS) were increased in FaGAPC2/FaPKc2.2-overexpressed fruit. Further, functional verification demonstrated that overexpression of FaPEPCK can promote strawberry fruit ripening, resulting in a range of maturity stage from full red to dark red stage, while the citric acid synthase (CS) activities and citric acid content were significantly decreased. Overall, this study revealed that FaGAPC2/FaPKc2.2 and FaPEPCK perform an important role in reducing citric acid content in strawberry fruit, and FaGAPC2/FaPKc2.2 mainly by promoting the GS degradation pathway and FaPEPCK mainly by inhibiting the CS synthesis pathway.
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Affiliation(s)
- Min Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - GouYan Hou
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - YuTing Peng
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - LiangXin Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - XiaoYang Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - YuYan Jiang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - CaiXia He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - MuSha She
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - ManTong Zhao
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yuanxiu Lin
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Yunting Zhang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Yan Wang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Wen He
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Xiaorong Wang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Haoru Tang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
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5
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Khan MKU, Muhammad N, Jia Z, Peng J, Liu M. Mechanism of Stone (Hardened Endocarp) Formation in Fruits: An Attempt toward Pitless Fruits, and Its Advantages and Disadvantages. Genes (Basel) 2022; 13:2123. [PMID: 36421798 PMCID: PMC9690734 DOI: 10.3390/genes13112123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2023] Open
Abstract
Stone (hardened endocarp) has a very important role in the continuity of plant life. Nature has gifted plants with various seed protection and dispersal strategies. Stone-fruit-bearing species have evolved a unique adaptation in which the seed is encased in an extremely hard wood-like shell called the stone. The lignification of the fruit endocarp layer produces the stone, a feature that separates drupes from other plants. Stone cells emerge from parenchyma cells after programmed cell death and the deposition of cellulose and lignin in the secondary cell wall. Generally, the deposition of lignin in primary cell walls is followed by secondary thickening of cell walls to form stone cells. This review article describes the molecular mechanisms and factors that influence the production of stone in the fruit. This is the first review article that describes the molecular mechanisms regulating stone (harden endocarp) formation in fruits. This article will help breeders understand the molecular and genetic basis for the stone formation in fruit, and this could lead to new and innovative directions to breed stoneless fruit cultivars in the future.
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Affiliation(s)
| | - Noor Muhammad
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
- Center of Chinese Jujube, Hebei Agricultural University, Baoding 071001, China
| | - Zhuolong Jia
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
| | - Jianying Peng
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
| | - Mengjun Liu
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
- Center of Chinese Jujube, Hebei Agricultural University, Baoding 071001, China
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6
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Pinzón-Sandoval EH, Balaguera-Lopez HE, Becerra-Gonzalez ME. Phenological and physicochemical changes during fruit development in two peach cultivars in the high tropics. REVISTA U.D.C.A ACTUALIDAD & DIVULGACIÓN CIENTÍFICA 2022. [DOI: 10.31910/rudca.v25.n1.2022.1942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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7
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Walker RP, Chen ZH, Famiani F. Gluconeogenesis in Plants: A Key Interface between Organic Acid/Amino Acid/Lipid and Sugar Metabolism. Molecules 2021; 26:molecules26175129. [PMID: 34500562 PMCID: PMC8434439 DOI: 10.3390/molecules26175129] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 12/22/2022] Open
Abstract
Gluconeogenesis is a key interface between organic acid/amino acid/lipid and sugar metabolism. The aims of this article are four-fold. First, to provide a concise overview of plant gluconeogenesis. Second, to emphasise the widespread occurrence of gluconeogenesis and its utilisation in diverse processes. Third, to stress the importance of the vacuolar storage and release of Krebs cycle acids/nitrogenous compounds, and of the role of gluconeogenesis and malic enzyme in this process. Fourth, to outline the contribution of fine control of enzyme activity to the coordinate-regulation of gluconeogenesis and malate metabolism, and the importance of cytosolic pH in this.
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Affiliation(s)
- Robert P. Walker
- Independent Researcher, Lancashire, Bolton BL2 3BG, UK
- Correspondence: (R.P.W.); (Z.-H.C.); (F.F.)
| | - Zhi-Hui Chen
- School of Life Science, University of Dundee, Dundee DD1 5EH, UK
- Correspondence: (R.P.W.); (Z.-H.C.); (F.F.)
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06123 Perugia, Italy
- Correspondence: (R.P.W.); (Z.-H.C.); (F.F.)
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8
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Walker RP, Bonghi C, Varotto S, Battistelli A, Burbidge CA, Castellarin SD, Chen ZH, Darriet P, Moscatello S, Rienth M, Sweetman C, Famiani F. Sucrose Metabolism and Transport in Grapevines, with Emphasis on Berries and Leaves, and Insights Gained from a Cross-Species Comparison. Int J Mol Sci 2021; 22:7794. [PMID: 34360556 PMCID: PMC8345980 DOI: 10.3390/ijms22157794] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 01/14/2023] Open
Abstract
In grapevines, as in other plants, sucrose and its constituents glucose and fructose are fundamentally important and carry out a multitude of roles. The aims of this review are three-fold. First, to provide a summary of the metabolism and transport of sucrose in grapevines, together with new insights and interpretations. Second, to stress the importance of considering the compartmentation of metabolism. Third, to outline the key role of acid invertase in osmoregulation associated with sucrose metabolism and transport in plants.
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Affiliation(s)
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, 35020 Legnaro, Italy;
| | - Serena Varotto
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, 35020 Legnaro, Italy;
| | - Alberto Battistelli
- Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, 05010 Porano, Italy; (A.B.); (S.M.)
| | | | - Simone D. Castellarin
- Wine Research Centre, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC V6T 0Z4, Canada;
| | - Zhi-Hui Chen
- College of Life Science, University of Dundee, Dundee DD1 5EH, UK;
| | - Philippe Darriet
- Cenologie, Institut des Sciences de la Vigne et du Vin (ISVV), 33140 Villenave d’Ornon, France;
| | - Stefano Moscatello
- Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, 05010 Porano, Italy; (A.B.); (S.M.)
| | - Markus Rienth
- Changins College for Viticulture and Oenology, University of Sciences and Art Western Switzerland, 1260 Nyon, Switzerland;
| | - Crystal Sweetman
- College of Science & Engineering, Flinders University, GPO Box 5100, Adelaide, SA 5001, Australia;
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy
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9
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Walker RP, Battistelli A, Bonghi C, Drincovich MF, Falchi R, Lara MV, Moscatello S, Vizzotto G, Famiani F. Non-structural Carbohydrate Metabolism in the Flesh of Stone Fruits of the Genus Prunus (Rosaceae) - A Review. FRONTIERS IN PLANT SCIENCE 2020; 11:549921. [PMID: 33240291 PMCID: PMC7683422 DOI: 10.3389/fpls.2020.549921] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 09/24/2020] [Indexed: 05/13/2023]
Abstract
Non-structural carbohydrates are abundant constituents of the ripe flesh of all stone fruits. The bulk of their content comprises sucrose, glucose, fructose and sorbitol. However, the abundance of each of these carbohydrates in the flesh differs between species, and also with its stage of development. In this article the import, subcellular compartmentation, contents, metabolism and functions of non-structural carbohydrates in the flesh of commercially cultivated stone fruits of the family Rosaceae are reviewed.
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Affiliation(s)
- Robert P. Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Alberto Battistelli
- Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Porano, Italy
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
| | - María F. Drincovich
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Rachele Falchi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - María V. Lara
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Stefano Moscatello
- Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Porano, Italy
| | - Giannina Vizzotto
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
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10
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Canton M, Drincovich MF, Lara MV, Vizzotto G, Walker RP, Famiani F, Bonghi C. Metabolism of Stone Fruits: Reciprocal Contribution Between Primary Metabolism and Cell Wall. FRONTIERS IN PLANT SCIENCE 2020; 11:1054. [PMID: 32733527 PMCID: PMC7363977 DOI: 10.3389/fpls.2020.01054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/26/2020] [Indexed: 05/08/2023]
Abstract
Cell wall turnover and modification in its composition are key factors during stone fruit development and patterning. Changes in cell wall disassembly and reassembly are essential for fruit growth and ripening. Modifications in cell wall composition, resulting in the formation of secondary cell walls, are necessary for producing the most distinctive trait of drupes: the lignified endocarp. The contribution of primary metabolism to cell wall synthesis has been investigated in detail, while the knowledge on the contribution of the cell wall to primary metabolites and related processes is still fragmented. In this review, starting from peculiarities of cell wall of drupes cells (in mesocarp and endocarp layers), we discuss the structure and composition of cell wall, processes related to its modification and contribution to the synthesis of primary metabolites. In particular, our attention has been focused on the ascorbate synthesis cell wall-related and on the potential role of cyanogenic compounds in the deposition of the secondary cell wall.
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Affiliation(s)
- Monica Canton
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
| | - María F. Drincovich
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - María V. Lara
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Giannina Vizzotto
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Udine, Italy
| | - Robert P. Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
- *Correspondence: Claudio Bonghi,
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11
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Famiani F, Bonghi C, Chen ZH, Drincovich MF, Farinelli D, Lara MV, Proietti S, Rosati A, Vizzotto G, Walker RP. Stone Fruits: Growth and Nitrogen and Organic Acid Metabolism in the Fruits and Seeds-A Review. FRONTIERS IN PLANT SCIENCE 2020; 11:572601. [PMID: 33101339 PMCID: PMC7546786 DOI: 10.3389/fpls.2020.572601] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/31/2020] [Indexed: 05/08/2023]
Abstract
Stone fruits of the Rosaceae family consist of several distinct parts, and these include the flesh, woody endocarp, and seed. To understand the metabolism of these fruits, it is necessary to have knowledge of both their structure and growth characteristics. The nitrogen metabolism of the different tissues of stone fruits is interlinked. For example, there is an import and storage of nitrogenous compounds in the endocarp that are then exported to the seed. Moreover, there are links between the metabolism of nitrogen and that of malic/citric acids. In this article, the structure and growth characteristics, together with the import/export, contents, metabolism, and functions of nitrogenous compounds and organic acids in the different parts of stone fruits and their seeds are reviewed.
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Affiliation(s)
- Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
- *Correspondence: Franco Famiani, ; Robert P. Walker,
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
| | - Zhi-Hui Chen
- College of Life Science, University of Dundee, Dundee, United Kingdom
| | - María F. Drincovich
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Daniela Farinelli
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - María V. Lara
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Simona Proietti
- Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Porano (TR), Italy
| | - Adolfo Rosati
- CREA Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura, Spoleto (PG), Italy
| | - Giannina Vizzotto
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Udine, Italy
| | - Robert P. Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
- *Correspondence: Franco Famiani, ; Robert P. Walker,
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Changes in Absolute Contents of Compounds Affecting the Taste and Nutritional Properties of the Flesh of Three Plum Species Throughout Development. Foods 2019; 8:foods8100486. [PMID: 31614805 PMCID: PMC6835993 DOI: 10.3390/foods8100486] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/03/2019] [Accepted: 10/10/2019] [Indexed: 02/03/2023] Open
Abstract
The characteristics of plum fruits of three different species were investigated throughout their development (including over-ripening). The content of primary and secondary metabolites was expressed as amount per gram DW (dry weight) and per fruit in order to obtain information about the balance between their synthesis and dissimilation at different stages of fruit development. In all the plums, during the first stages of development, glucose was the most abundant sugar, whereas sucrose increased during ripening. There was no decrease in malate content per fruit before the commercial harvesting time of any of the plums, whereas a decrease was observed during over-ripening. In general, both the total phenol content and the contents of individual phenols in the flesh expressed on gram DW decreased throughout development, whereas their content per fruit increased, indicating that these decreases were due to a dilution effect arising from the expansion of the flesh. During the development of the flesh, the increase in the contents of the investigated metabolites per fruit shows that there was no net dissimilation of malate up to commercial harvest and of phenols throughout fruit development. Good correlations between the content of phenols to antioxidant activity were found. Shiro flesh, during the last part of fruit development, had lower total carbohydrate and polyphenol contents, lower antioxidant activities, and a higher malate content than the flesh of the other two genotypes.
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13
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Influence of Coating Application Methods on the Postharvest Quality of Cassava. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2019; 2019:2148914. [PMID: 30863776 PMCID: PMC6378783 DOI: 10.1155/2019/2148914] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 11/28/2018] [Accepted: 01/03/2019] [Indexed: 11/18/2022]
Abstract
Various modes of edible coating application vary in their coat dispersion and film formation, hence the need to determine the most effective mode of application for cassava. Edible surface coatings have been found to be effective in preserving the quality of various food products. However, there are variations in effectiveness among the different coating solutions, hence the need for optimization of the concentrations of the gums used. This study aimed at determining the most efficient coating application method on the cassava postharvest quality. Physiologically mature cassava (variety KME 1) was harvested and divided into seven portions. The various portions were coated using 1.5% xanthan gum, 1.5% xanthan/guar gum, and 2% xanthan/guar gum by both dipping and spraying method. There was no significant difference on the colour, total cyanide, ethylene production, and total phenolic content between the two application methods. The 2% xanthan/guar gum coating showed a significant difference on the dry matter content while the 1.5% xanthan gum coating had a significant difference on the respiration rate and weight loss. The 1.5 xanthan treated roots had a final dry matter content of 72.5% for the sprayed samples and 75.98% for the dipped sample while the 2% xanthan/guar gum treated roots had a final dry matter content of 64.6% and 74.1% for the dipped and sprayed root samples, respectively. The 1.5% xanthan and 2% xanthan/guar gum treated roots showed no significant difference in their action on dry matter content. The 1.5% xanthan/guar dipped and sprayed samples differed significantly on their effect on flesh firmness with final values of 35.4N and 46.1N, respectively, at 20 days after harvest. This study suggested that based on the coating solution and the parameters being observed, there generally was no varying effect of dipping and spraying methods of coating application. The choice of the efficient mode of application to use will depend on other factors such as the easiness of application.
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Giné-Bordonaba J, Echeverria G, Duaigües E, Bobo G, Larrigaudière C. A comprehensive study on the main physiological and biochemical changes occurring during growth and on-tree ripening of two apple varieties with different postharvest behaviour. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:601-610. [PMID: 30442442 DOI: 10.1016/j.plaphy.2018.10.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 10/23/2018] [Accepted: 10/30/2018] [Indexed: 05/23/2023]
Abstract
Apple quality and the storage potential likely depend on a range of physiological and biochemical events occurring throughout fruit development and ripening. In this study, we investigated the major physiological (ethylene production and respiration) and biochemical changes (related to sugar and malic acid content as well as antioxidant metabolism) occurring during growth and on-tree ripening of two apple varieties ('Granny Smith' (GS) and 'Early Red One' (ERO)) with known differences in their postharvest behaviour, mainly firmness loss and susceptibility to superficial scald. Our results demonstrate that the higher storability and the limited loss of firmness of 'GS' fruit was associated to a higher acid content, mainly malic acid, that seemed to be regulated already at fruit set (20 DAFB). The reduced loss of firmness during storage in 'GS' was also associated to the fruit inability to produce ethylene upon harvest resulting from very low 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) activity. Sugar accumulation, on the other hand, was similar among both varieties as was also observed for the rate of fruit growth or the fruit respiration pattern. In addition, the higher susceptibility of 'GS' if compared to 'ERO' to superficial scald was not associated to peroxidative damage (malondialdehyde accumulation) nor to higher levels of the sesquiterpene α-farnesene but rather mediated by a fruit antioxidant imbalance resulting from higher H2O2 levels and lower antioxidant (peroxidase) enzymatic capacity. The interplay between ethylene, respiration and antioxidants or sugars and organic acids during apple growth and development is further discussed.
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Affiliation(s)
- Jordi Giné-Bordonaba
- Institute for Food and Agricultural Research and Technology (IRTA), XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain.
| | - Gemma Echeverria
- Institute for Food and Agricultural Research and Technology (IRTA), XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain
| | - Elisabet Duaigües
- Institute for Food and Agricultural Research and Technology (IRTA), XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain
| | - Gloria Bobo
- Institute for Food and Agricultural Research and Technology (IRTA), XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain
| | - Christian Larrigaudière
- Institute for Food and Agricultural Research and Technology (IRTA), XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain
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15
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Jiang CC, Fang ZZ, Zhou DR, Pan SL, Ye XF. Changes in secondary metabolites, organic acids and soluble sugars during the development of plum fruit cv. 'Furongli' (Prunus salicina Lindl). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:1010-1019. [PMID: 30009532 DOI: 10.1002/jsfa.9265] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 06/28/2018] [Accepted: 07/12/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Organic acids, sugars and pigments are key components that determine the taste and flavor of plum fruit. However, metabolism of organic acid and sugar is not fully understood during the development of plum fruit cv. 'Furongli'. RESULTS Mature fruit of 'Furongli' has the highest content of anthocyanins and the lowest content of total phenol compounds and flavonoids. Malate is the predominant organic acid anion in 'Furongli' fruit, followed by citrate and isocitrate. Glucose was the predominant sugar form, followed by fructose and sucrose. Correlation analysis indicated that malate content increased with increasing phosphoenolpyruvate carboxylase (PEPC) activity and decreasing nicotinamide adenine dinucleotide-malate dehydrogenase (NAD-MDH) activity. Citrate and isocitrate content increased with increasing PEPC and aconitase (ACO) activities, respectively. Both acid invertase and neutral invertase had higher activities at the early stage than later stage of fruit development. Fructose content decreased with increasing phosphoglucoisomerase (PGI) activity, whereas glucose content increased with decreasing hexokinase (HK) activity. CONCLUSION Dynamics in organic acid anions were not solely controlled by a single enzyme but regulated by the integrated activity of enzymes such as nicotinamide adenine dinucleotide phosphate-malic enzyme (NADP-ME), NAD-ME, PEPC, ACO and NADP-isocitrate dehydrogenase. Sugar metabolism enzymes such as PGI, invertase and HK may play vital roles in the regulation of individual sugar metabolic processes. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Cui-Cui Jiang
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Zhi-Zhen Fang
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Dan-Rong Zhou
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Shao-Lin Pan
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Xin-Fu Ye
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
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16
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Batista-Silva W, Nascimento VL, Medeiros DB, Nunes-Nesi A, Ribeiro DM, Zsögön A, Araújo WL. Modifications in Organic Acid Profiles During Fruit Development and Ripening: Correlation or Causation? FRONTIERS IN PLANT SCIENCE 2018; 9:1689. [PMID: 30524461 PMCID: PMC6256983 DOI: 10.3389/fpls.2018.01689] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/31/2018] [Indexed: 05/21/2023]
Abstract
The pivotal role of phytohormones during fruit development and ripening is considered established knowledge in plant biology. Perhaps less well-known is the growing body of evidence suggesting that organic acids play a key function in plant development and, in particular, in fruit development, maturation and ripening. Here, we critically review the connection between organic acids and the development of both climacteric and non-climacteric fruits. By analyzing the metabolic content of different fruits during their ontogenetic trajectory, we noticed that the content of organic acids in the early stages of fruit development is directly related to the supply of substrates for respiratory processes. Although different organic acid species can be found during fruit development in general, it appears that citrate and malate play major roles in this process, as they accumulate on a broad range of climacteric and non-climacteric fruits. We further highlight the functional significance of changes in organic acid profile in fruits due to either the manipulation of fruit-specific genes or the use of fruit-specific promoters. Despite the complexity behind the fluctuation in organic acid content during fruit development and ripening, we extend our understanding on the importance of organic acids on fruit metabolism and the need to further boost future research. We suggest that engineering organic acid metabolism could improve both qualitative and quantitative traits of crop fruits.
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Affiliation(s)
- Willian Batista-Silva
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Vitor L. Nascimento
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - David B. Medeiros
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Dimas M. Ribeiro
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Agustín Zsögön
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Wagner L. Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil
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17
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Walker RP, Benincasa P, Battistelli A, Moscatello S, Técsi L, Leegood RC, Famiani F. Gluconeogenesis and nitrogen metabolism in maize. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 130:324-333. [PMID: 30041084 DOI: 10.1016/j.plaphy.2018.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/06/2018] [Accepted: 07/06/2018] [Indexed: 05/23/2023]
Abstract
Two pathways can be used by gluconeogenesis in plants: one employs phosphoenolpyruvate carboxykinase (PEPCK) and the other pyruvate orthophosphate dikinase (PPDK). The occurrence-location of these enzymes was determined in developing kernels of maize. PPDK was much more abundant than PEPCK in extracts of whole kernels. However, their location within the kernel was different. PPDK was particularly abundant in the peripheral endosperm (in which alanine is abundant), whereas PEPCK was localised in the pedicel and basal endosperm transfer cells (where asparagine is metabolised). The abundance of these enzymes was also determined in maize roots where there was a massive increase in abundance of PEPCK and a small increase in abundance of PPDK when they were fed ammonium; PEPCK was located in the pericycle and various cell types associated with the vasculature. On the other hand, there was a large increase in abundance of PPDK in roots subjected to anoxia (which induces an accumulation of alanine), whereas the abundance of PEPCK was decreased. These results show: firstly, that gluconeogenesis can potentially occur in many different tissues of maize. Secondly, within one organ PPDK can be abundant in some tissues and PEPCK in others. Thirdly, the abundance of PPDK and PEPCK is often associated with the metabolism of certain nitrogenous compounds and can be dramatically altered by factors related to nitrogen metabolism. In maize roots and developing kernels PPDK was associated with alanine metabolism. By contrast, the presence of PEPCK in maize roots and kernels was associated with either ammonium or asparagine metabolism. We propose that gluconeogenesis is often a component of a widespread mechanism that is used in coordinating the import/mobilisation of nitrogenous compounds with their utilisation. Further, potentially component of this mechanism may have provided building blocks that were used in the evolution of processes such as C4 photosynthesis, Crassulacean acid metabolism, stomatal metabolism and the biochemical pH stat.
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Affiliation(s)
- Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy.
| | - Paolo Benincasa
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy
| | - Alberto Battistelli
- Istituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Viale Marconi 2, 05010, Porano, TR, Italy
| | - Stefano Moscatello
- Istituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Viale Marconi 2, 05010, Porano, TR, Italy
| | - László Técsi
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Richard C Leegood
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy.
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18
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Giné-Bordonaba J, Echeverria G, Ubach D, Aguiló-Aguayo I, López ML, Larrigaudière C. Biochemical and physiological changes during fruit development and ripening of two sweet cherry varieties with different levels of cracking tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 111:216-225. [PMID: 27951491 DOI: 10.1016/j.plaphy.2016.12.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 05/11/2023]
Abstract
The aim of this study was to investigate the biochemical and metabolic changes, related to oxidative stress, ethylene and respiration, cell wall modification and primary metabolism, between a high ('Prime Giant') and a low ('Cristalina') cracking susceptible sweet cherry cultivar during growth and ripening. While cherries are referred as a non-climacteric fruit, our results show that an increase of endogenous ethylene production at earlier fruit developmental stages is parallel to colour development and softening during growth. Higher cracking susceptibility was clearly associated to a higher fruit growth rate and accompanied by an increase net CO2 and ethylene production, on a cherry basis, leading to an enhanced accumulation of oxidative stress markers (i.e. H2O2 and MDA). As observed in other fruit species (i.e. tomatoes) higher cracking susceptibility was also related to enhanced activity of cell wall-modifying enzymes which in turn occurred in parallel to the ethylene rise. Overall, these results suggest that cracking development may be a more complex phenomenon than a mere consequence of altered fruit water absorption or turgor and point out the importance of ethylene on sweet cherry ripening and cracking development.
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Affiliation(s)
- Jordi Giné-Bordonaba
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain.
| | - Gemma Echeverria
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain
| | - Dolors Ubach
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain
| | - Ingrid Aguiló-Aguayo
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain
| | - M Luisa López
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain; Food Technology Department, University of Lleida, Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Christian Larrigaudière
- Postharvest Programme, Institute for Food and Agricultural Research and Technology (IRTA), Parc Científic i Tecnològic Agroalimentari de Lleida, Edifici Fruitcentre, 25003, Lleida, Spain
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19
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Sestili F, Sparla F, Botticella E, Janni M, D'Ovidio R, Falini G, Marri L, Cuesta-Seijo JA, Moscatello S, Battistelli A, Trost P, Lafiandra D. The down-regulation of the genes encoding Isoamylase 1 alters the starch composition of the durum wheat grain. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 252:230-238. [PMID: 27717459 DOI: 10.1016/j.plantsci.2016.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 05/20/2023]
Abstract
In rice, maize and barley, the lack of Isoamylase 1 activity materially affects the composition of endosperm starch. Here, the effect of this deficiency in durum wheat has been characterized, using transgenic lines in which Isa1 was knocked down via RNAi. Transcriptional profiling confirmed the partial down-regulation of Isa1 and revealed a pleiotropic effect on the level of transcription of genes encoding other isoamylases, pullulanase and sucrose synthase. The polysaccharide content of the transgenic endosperms was different from that of the wild type in a number of ways, including a reduction in the content of starch and a moderate enhancement of both phytoglycogen and β-glucan. Some alterations were also induced in the distribution of amylopectin chain length and amylopectin fine structure. The amylopectin present in the transgenic endosperms was more readily hydrolyzable after a treatment with hydrochloric acid, which disrupted its semi-crystalline structure. The conclusion was that in durum wheat, Isoamylase 1 is important for both the synthesis of amylopectin and for determining its internal structure.
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Affiliation(s)
- Francesco Sestili
- Department of Agricultural and Forestry Sciences DAFNE, University of Tuscia, Via S. Camillo de Lellis, SNC, 01100 Viterbo, Italy.
| | - Francesca Sparla
- Department of Pharmacy and Biotechnology FABIT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.
| | - Ermelinda Botticella
- Department of Agricultural and Forestry Sciences DAFNE, University of Tuscia, Via S. Camillo de Lellis, SNC, 01100 Viterbo, Italy.
| | - Michela Janni
- Department of Agricultural and Forestry Sciences DAFNE, University of Tuscia, Via S. Camillo de Lellis, SNC, 01100 Viterbo, Italy; National Research Council CNR-Istituto di Bioscienze e Biorisorse, Via G. Amendola, 165, 70126 Bari, Italy.
| | - Renato D'Ovidio
- Department of Agricultural and Forestry Sciences DAFNE, University of Tuscia, Via S. Camillo de Lellis, SNC, 01100 Viterbo, Italy.
| | - Giuseppe Falini
- Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Lucia Marri
- Carlsberg Research Laboratory, Gamle Carlsberg Vej 10, Copenhagen, V DK-1799, Denmark.
| | - Jose A Cuesta-Seijo
- Carlsberg Research Laboratory, Gamle Carlsberg Vej 10, Copenhagen, V DK-1799, Denmark.
| | - Stefano Moscatello
- National Research Council CNR-Istituto di Biologia Agroambientale e Forestale, Viale Marconi 2, 05010 Porano, TR, Italy.
| | - Alberto Battistelli
- National Research Council CNR-Istituto di Biologia Agroambientale e Forestale, Viale Marconi 2, 05010 Porano, TR, Italy.
| | - Paolo Trost
- Department of Pharmacy and Biotechnology FABIT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.
| | - Domenico Lafiandra
- Department of Agricultural and Forestry Sciences DAFNE, University of Tuscia, Via S. Camillo de Lellis, SNC, 01100 Viterbo, Italy.
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20
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Walker RP, Paoletti A, Leegood RC, Famiani F. Phosphorylation of phosphoenolpyruvate carboxykinase (PEPCK) and phosphoenolpyruvate carboxylase (PEPC) in the flesh of fruits. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:323-327. [PMID: 27497301 DOI: 10.1016/j.plaphy.2016.07.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/03/2016] [Accepted: 07/19/2016] [Indexed: 05/22/2023]
Abstract
This study determined whether phosphoenolpyruvate carboxykinase (PEPCK) and phosphoenolpyruvate carboxylase (PEPC) are phosphorylated in the flesh of a range of fruits. This was done by incubating fruit flesh with 32P[P] (where 32P[P] = 32PO43-), then PEPCK and PEPC were immunoprecipitated from extracts using specific antisera. The incorporation of 32P[P] into these enzymes was then determined by autoradiography of SDS-PAGE gels. Both enzymes were subject to phosphorylation in vivo in the flesh of grape, tomato, cherry and plum. PEPCK was also subject to phosphorylation in vivo in developing grape seeds. Proteolytic cleavage of PEPCK showed that it was phosphorylated at a site(s) located on its N-terminal extension. Potentially phosphorylation of these enzymes could contribute to the coordinate regulation of their activities in the flesh of fruits and in developing seeds.
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Affiliation(s)
- Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Italy.
| | - Andrea Paoletti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Italy
| | - Richard C Leegood
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Italy.
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21
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Famiani F, Paoletti A, Battistelli A, Moscatello S, Chen ZH, Leegood RC, Walker RP. Phosphoenolpyruvate carboxykinase, pyruvate orthophosphate dikinase and isocitrate lyase in both tomato fruits and leaves, and in the flesh of peach and some other fruits. JOURNAL OF PLANT PHYSIOLOGY 2016; 202:34-44. [PMID: 27450492 DOI: 10.1016/j.jplph.2016.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/30/2016] [Accepted: 07/01/2016] [Indexed: 06/06/2023]
Abstract
In this study the occurrence of a number of enzymes involved in gluconeogenesis was investigated in both tomato fruits and leaves during their development and senescence and in some other fruits. The enzymes studied were phosphoenolpyruvate carboxykinase (PEPCK), pyruvate orthophosphate dikinase (PPDK) and glyoxysomal isocitrate lyase (ICL). PPDK was detected in the ripe flesh of tomato, and much smaller amounts were detected in the flesh of both peach and pepper, whereas it was not detected (not present or at very low abundance) in the other fruits which were investigated (apricot, aubergine, blackberry, blueberry, cherry, grape, plum, raspberry and red current). By contrast PEPCK was present in the flesh of all the fruits investigated. Very small amounts of ICL were detected in ripe tomato flesh. PEPCK was present in the skin, flesh, locular gel and columella of tomato fruit, and in these its abundance increased greatly during ripening. PPDK showed a similar distribution, however, its abundance did not increase during ripening. PEPCK was not detected in tomato leaves at any stage of their development or senescence. The content of PPDK g(-1) fresh weight (FW) increased in tomato leaves as they matured, however, it declined during their senescence. In tomato leaves the content of ICL g(-1) FW increased until the mid-stage of development, then decreased as the leaf matured, and then increased during the latter stages of senescence. In the flesh of tomato fruits the contents of PPDK and PEPCK g(-1) FW decreased during senescence. The results suggest that in fruits other than tomato the bulk of any gluconeogenic flux proceeds via PEPCK, whereas in tomato both PEPCK and PPDK could potentially be utilised. Further, the results indicate that the conversion of pyruvate/acetyl-CoA to malate by the glyoxylate cycle, for which ICL is necessary, is not a major pathway utilised by gluconeogenesis in fruits under normal conditions of growth. Finally, the results contribute to our understanding of the role of several enzymes in the senescence of both leaves and fruits.
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Affiliation(s)
- Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
| | - Andrea Paoletti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy
| | - Alberto Battistelli
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano (TR), Italy
| | - Stefano Moscatello
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano (TR), Italy
| | - Zhi-Hui Chen
- College of Life Science, University of Dundee, Dundee, DD1 5EH, Scotland, UK
| | - Richard C Leegood
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
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Famiani F, Farinelli D, Moscatello S, Battistelli A, Leegood RC, Walker RP. The contribution of stored malate and citrate to the substrate requirements of metabolism of ripening peach (Prunus persica L. Batsch) flesh is negligible. Implications for the occurrence of phosphoenolpyruvate carboxykinase and gluconeogenesis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 101:33-42. [PMID: 26852108 DOI: 10.1016/j.plaphy.2016.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 01/13/2016] [Indexed: 05/23/2023]
Abstract
The first aim of this study was to determine the contribution of stored malate and citrate to the substrate requirements of metabolism in the ripening flesh of the peach (Prunus persica L. Batsch) cultivar Adriatica. In the flesh, stored malate accumulated before ripening could contribute little or nothing to the net substrate requirements of metabolism. This was because there was synthesis and not dissimilation of malate throughout ripening. Stored citrate could potentially contribute a very small amount (about 5.8%) of the substrate required by metabolism when the whole ripening period was considered, and a maximum of about 7.5% over the latter part of ripening. The second aim of this study was to investigate why phosphoenolpyruvate carboxykinase (PEPCK) an enzyme utilised in gluconeogenesis from malate and citrate is present in peach flesh. The occurrence and localisation of enzymes utilised in the metabolism of malate, citrate and amino acids were determined in peach flesh throughout its development. Phosphoenolpyruvate carboxylase (essential for the synthesis of malate and citrate) was present in the same cells and at the same time as PEPCK and NADP-malic enzyme (both utilised in the dissimilation of malate and citrate). A hypothesis is presented to explain the presence of these enzymes and to account for the likely occurrence of gluconeogenesis.
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Affiliation(s)
- Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121, Perugia, Italy.
| | - Daniela Farinelli
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121, Perugia, Italy
| | | | | | - Richard C Leegood
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121, Perugia, Italy.
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Walker RP, Battistelli A, Moscatello S, Técsi L, Leegood RC, Famiani F. Phosphoenolpyruvate carboxykinase and gluconeogenesis in grape pericarp. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 97:62-9. [PMID: 26432988 DOI: 10.1016/j.plaphy.2015.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 08/27/2015] [Accepted: 09/02/2015] [Indexed: 05/23/2023]
Abstract
Glycolysis from sugars is necessary at all stages of development of grape pericarp, and this raises the question as to why gluconeogenesis from malate occurs. Phosphoenolpyruvate carboxykinase (PEPCK) is required for gluconeogenesis in grape pericarp. In this study we determined the abundance of PEPCK protein and activity in different parts of grape pericarp during its development. Both PEPCK protein and activity were present throughout development, however, in both the skin and the flesh their abundance increased greatly at the start of ripening. This coincided with the onset of the decrease in the malate content of the berry. The location of PEPCK in the pericarp at different stages of development was determined using both immunohistochemistry and dissection. We provide a possible explanation for the occurrence of gluconeogenesis in grape pericarp.
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Affiliation(s)
- Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
| | - Alberto Battistelli
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano (TR), Italy
| | - Stefano Moscatello
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano (TR), Italy
| | - László Técsi
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Richard C Leegood
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2 TN, UK
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
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Huang YX, Yin YG, Sanuki A, Fukuda N, Ezura H, Matsukura C. Phosphoenolpyruvate carboxykinase (PEPCK) deficiency affects the germination, growth and fruit sugar content in tomato (Solanum lycopersicum L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 96:417-25. [PMID: 26381194 DOI: 10.1016/j.plaphy.2015.08.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/17/2015] [Accepted: 08/27/2015] [Indexed: 05/18/2023]
Abstract
Phosphoenolpyruvate carboxykinase (PEPCK) is a key regulatory enzyme and is utilized in the gluconeogenesis pathway in plants. Although, its catalytic and regulatory properties are quite well understood, there are uncertainties regarding its physiological role in many plants tissues such as the flesh of developing fruits. To further understand the function of PEPCK in fruits and other tissues, RNAi transgenic tomato plants in which SlPEPCK transcription was down-regulated by either CaMV 35S constitutive promoter or the fruit-specific E8 promoter were generated and characterized on the basis of their phenotypic and metabolic aspects. In the PEPCK-deficient lines, prominent growth suppression of germinated seedlings was observed and other vegetative suppression appeared during the early stage of plant growth in the 35S promoter-driven lines. In particular, root elongation was most obviously suppressed in the germinated seedlings, indicating that the gluconeogenesis pathway is involved in the root growth of seedlings. Regarding the primary metabolism in fruit, the soluble sugar content tended to decrease, whereas the malate content tended to increase in ripening fruits of the RNAi lines compared with the wild type. These results indicate that activation of the gluconeogenesis pathway from organic acids to sugars occurs during ripening but is suppressed by the knocking down of the PEPCK gene, suggesting that PEPCK participates in determining the sugar/acid ratio in ripening fruit.
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Affiliation(s)
- Yong-Xing Huang
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Yong-Gen Yin
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan; Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA), Watanuki 1233, Takasaki, Gunma 370-1292, Japan
| | - Atsuko Sanuki
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Naoya Fukuda
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Hiroshi Ezura
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Chiaki Matsukura
- Graduate School of Life and Environment Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan.
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Famiani F, Moscatello S, Ferradini N, Gardi T, Battistelli A, Walker RP. Occurrence of a number of enzymes involved in either gluconeogenesis or other processes in the pericarp of three cultivars of grape (Vitis vinifera L.) during development. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2014; 84:261-270. [PMID: 25306529 DOI: 10.1016/j.plaphy.2014.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/02/2014] [Indexed: 06/04/2023]
Abstract
It is uncertain whether the enzymes pyruvate orthophosphate dikinase (PPDK) or isocitrate lyase (ICL) are present in the pericarp of grape, in which they could function in gluconeogenesis. The occurrence of these and other enzymes was investigated in the pericarp of three cultivars of grape (Vitis vinifera L.). In particular, the abundance of the enzymes aldolase, glutamine synthase (GS), acid invertase, ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), phosphoenolpyruvate carboxylase (PEPC), PPDK and ICL were determined during the development of the pericarp of the cultivars Cabernet Sauvignon, Chardonnay and Zibibbo. PPDK and ICL were not detected at any stage of development. Each of the other enzymes showed different changes in abundance during development. However, for a given enzyme its changes in abundance were similar in each cultivar. In the ripe pericarp of Cabernet Sauvignon, PEPC, cytosolic GS and aldolase were equally distributed between the vasculature and parenchyma cells of the flesh and skin. The absence or very low abundance of PPDK provides strong evidence that any gluconeogenesis from malate utilises phosphoenolpyruvate carboxykinase (PEPCK). The absence or very low abundance of ICL in the pericarp precludes any gluconeogenesis from ethanol.
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Affiliation(s)
- Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
| | - Stefano Moscatello
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano TR, Italy
| | - Nicoletta Ferradini
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy
| | - Tiziano Gardi
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy
| | - Alberto Battistelli
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010, Porano TR, Italy
| | - Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121, Perugia, Italy.
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Famiani F, Farinelli D, Palliotti A, Moscatello S, Battistelli A, Walker RP. Is stored malate the quantitatively most important substrate utilised by respiration and ethanolic fermentation in grape berry pericarp during ripening? PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2014; 76:52-7. [PMID: 24463535 DOI: 10.1016/j.plaphy.2013.12.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 12/21/2013] [Indexed: 05/20/2023]
Abstract
A widely held view is that in grape pericarp glycolysis is inhibited during ripening, and that stored malate rather than sugars become the major substrate for respiration. In this study we determined what contribution stored malate could make to the substrate requirements of respiration and ethanolic fermentation in the pericarp of Cabernet Sauvignon berries during ripening. At a number of time points through development the amount of malate in the pericarp was measured. The change in malate content between each time point was then calculated, having first allowed for dilution arising from expansion of the fruit. The amount of CO2 that was released by the berry in the interval between each pair of time points was measured. It was found that the contribution that stored malate could make to the substrate requirements of respiration and ethanolic fermentation of grape pericarp was dependent on the stage of ripening. At the beginning of ripening stored malate could provide a greater proportion of substrate than later in ripening, and during the latter its contribution was relatively low. Therefore, stored malate was not the quantitatively most important substrate utilised by respiration and ethanolic fermentation in the pericarp of grape berries during most of ripening. It is likely that sugars provide the bulk of the deficit in substrate. Further, the increase in the respiratory quotient during most of ripening does not arise from the use of malate as main respiratory substrate.
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Affiliation(s)
- Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy.
| | - Daniela Farinelli
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy
| | - Alberto Palliotti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy
| | - Stefano Moscatello
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010 Porano (TR), Italy.
| | - Alberto Battistelli
- Istituto di Biologia Agroambientale e Forestale, CNR, Viale Marconi, 2, 05010 Porano (TR), Italy
| | - Robert P Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy.
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27
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Hammami SBM, Costagli G, Rapoport HF. Cell and tissue dynamics of olive endocarp sclerification vary according to water availability. PHYSIOLOGIA PLANTARUM 2013; 149:571-582. [PMID: 24004196 DOI: 10.1111/ppl.12097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/06/2013] [Accepted: 08/14/2013] [Indexed: 05/28/2023]
Abstract
Endocarp developmental timing in drupe-type fruits, involving tissue expansion and sclerification processes, is increasingly used as marker for biological studies and crop management. In spite of its wide application, however, little is known regarding how these morphogenetic processes unfold or the factors that modify it. This study evaluates endocarp expansion and sclerification of olive (Olea europaea) fruits, used as an example of drupe-type fruits, from trees growing under different water regimes: full irrigated, deficit irrigated (moderate reduction of water availability) and rainfed (severe reduction of water availability). Fruits were sampled weekly until pit hardening, and fruit and endocarp areas were evaluated in histological preparations. An image analysis process was tested and adjusted to quantify sclerified area and distribution within the endocarp. Individual stone cells differentiated independently but distribution and timing indicated the overall coordination of endocarp tissue sclerification. Increase in sclerified area was initially gradual, accelerated abruptly the week prior to the end of endocarp expansion and then continued at an intermediate rate. These results suggest that the end of the expansion period is driven by sclerification and the morphogenetic signals involved act first on sclerification rather than endocarp size. Intensification of sclerification and the end of expansive growth occurred first with lowest water supply. Moderate and severe reductions in water availability proportionately decreased endocarp expansion and prolonged the sclerification, delaying the date of physically perceived hardening but not affecting the final degree of endocarp sclerification.
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Affiliation(s)
- Sofiene B M Hammami
- Instituto de Agricultura Sostenible, IAS-CSIC, P.O. Box 4084, 14080, Cordoba, Spain
- Institut National Agronomique de Tunisie, 43 av. Charles Nicolle, 1082, Tunis, Tunisia
| | - Giacomo Costagli
- Instituto de Agricultura Sostenible, IAS-CSIC, P.O. Box 4084, 14080, Cordoba, Spain
- Alfa Laval SpA, Olive Oil, Via Sangallo 33, Tavarnelle Val Di Pesa, FI IT-50028, Italy
| | - Hava F Rapoport
- Instituto de Agricultura Sostenible, IAS-CSIC, P.O. Box 4084, 14080, Cordoba, Spain
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