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Chekol H, Warkineh B, Shimber T, Mierek-Adamska A, Dąbrowska GB, Degu A. Drought Stress Responses in Arabica Coffee Genotypes: Physiological and Metabolic Insights. PLANTS (BASEL, SWITZERLAND) 2024; 13:828. [PMID: 38592785 PMCID: PMC10975139 DOI: 10.3390/plants13060828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/30/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024]
Abstract
Understanding the impact of drought stress on Arabica coffee physiology and metabolism is essential in the pursuit of developing drought-resistant varieties. In this study, we explored the physiological and metabolite changes in coffee genotypes exhibiting varying degrees of tolerance to drought-namely, the relatively tolerant Ca74110 and Ca74112, and the sensitive Ca754 and CaJ-19 genotypes-under well-watered conditions and during terminal drought stress periods at two time points (0 and 60 days following the onset of stress). The metabolite profiling uncovered significant associations between the growth and the physiological characteristics of coffee genotypes with distinct drought tolerance behaviors. Initially, no marked differences were observed among the genotypes or treatments. However, at the 60-day post-drought onset time point, notably higher shoot growth, biomass, CO2 assimilation, pigments, and various physiological parameters were evident, particularly in the relatively tolerant genotypes. The metabolite profiling revealed elevations in glucose, maltose, amino acids, and organic acids, and decreases in other metabolites. These alterations were more pronounced in the drought-tolerant genotypes, indicating a correlation between enhanced compatible solutes and energy-associated metabolites crucial for drought tolerance mechanisms. This research introduces GC-MS-based metabolome profiling to the study of Ethiopian coffee, shedding light on its intricate responses to drought stress and paving the way for the potential development of drought-resistant coffee seedlings in intensified agro-ecological zones.
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Affiliation(s)
- Habtamu Chekol
- Department of Plant Biology and Biodiversity Management, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa 3434, Ethiopia; (H.C.); (B.W.)
| | - Bikila Warkineh
- Department of Plant Biology and Biodiversity Management, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa 3434, Ethiopia; (H.C.); (B.W.)
| | - Tesfaye Shimber
- Ethiopian Institute of Agricultural Research, Addis Ababa 2003, Ethiopia;
| | - Agnieszka Mierek-Adamska
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (A.M.-A.); (G.B.D.)
| | - Grażyna B. Dąbrowska
- Department of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; (A.M.-A.); (G.B.D.)
| | - Asfaw Degu
- Department of Plant Biology and Biodiversity Management, College of Natural and Computational Sciences, Addis Ababa University, Addis Ababa 3434, Ethiopia; (H.C.); (B.W.)
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De Palma N, Fett-Neto AG. A semi-quantitative histochemical method for assessment of biochemical responses to osmotic stress in Coffea arabica leaf disks. PROTOPLASMA 2024:10.1007/s00709-024-01941-2. [PMID: 38462580 DOI: 10.1007/s00709-024-01941-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/29/2024] [Indexed: 03/12/2024]
Abstract
A simple method set for assessing biochemical changes associated with osmotic stress responses was developed using coffee (Coffea arabica L.) leaf disks. Stress was induced by polyethylene glycol (PEG) exposure. Quantitative evaluation of tissue physiological stress parameters was carried out using analytical methods to validate the conversion of classic qualitative histochemical tests for localizing lipid peroxidation, hydrogen peroxide, and total xanthine alkaloids into semi-quantitative assays. Relative electrolyte leakage (EL%) and chlorophyll content (SPAD index) were also recorded. EL% levels of treated disks were higher than those of control ones, whereas SPAD indexes were comparable. Histochemical localization indicated that levels of lipid peroxidation, H2O2, and total xanthines were also higher under osmotic stress than in control conditions. Semi-quantitative data obtained by image processing of histochemical staining consistently matched quantitative evaluations. Chromatographic analyses revealed that theophylline and caffeine concentrations increased in the presence of PEG, whereas theobromine remained constant in relation to the control. The methods herein described can be useful to rapidly acquire initial data regarding biochemical osmotic stress responses in coffee tissues based on simple staining and imaging steps. Moreover, it is likely that the same method may be applicable to other types of stresses and plant species upon minor adjustments.
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Affiliation(s)
- Nicolás De Palma
- Plant Physiology Laboratory, Department of Botany, Institute of Biosciences, Federal University of Rio Grande do Sul, Campus do Vale, Av. Bento Gonçalves 9500, building 43423, Porto Alegre, RS, 91501-970, Brazil
| | - Arthur Germano Fett-Neto
- Plant Physiology Laboratory, Department of Botany, Institute of Biosciences, Federal University of Rio Grande do Sul, Campus do Vale, Av. Bento Gonçalves 9500, building 43423, Porto Alegre, RS, 91501-970, Brazil.
- Center for Biotechnology, Federal University of Rio Grande do Sul, CP 15005, Porto Alegre, RS, 91501-970, Brazil.
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Wang Y, Wang X, Hu G, Al-Romaima A, Peng X, Li J, Bai X, Li Z, Qiu M. Anaerobic germination of green coffee beans: A novel strategy to improve the quality of commercial Arabica coffee. Curr Res Food Sci 2023; 6:100461. [PMID: 36852384 PMCID: PMC9958430 DOI: 10.1016/j.crfs.2023.100461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/16/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023] Open
Abstract
This study aimed to improve the brewing quality of commercial Arabica coffee through anaerobic germination. Changes in important compounds and cupping scores of germination roasting coffee with different germination degrees were investigated by 1H NMR, HS-SPME-GC-MS and sensory analysis. Statistical analysis of multivariate analysis results indicated that 6 water-soluble chemical components and 8 volatile chemical components have the potential to be markers of germinated roasting coffee. In addition, germination significantly reduced caffeine content and acrylamide formation in roasted coffee. Sensory analysis according to the Specialty Coffee Association (SCA) cupping protocol demonstrated that anaerobic germination modified flavor attributes, improved the quality, and increased sensory scores. Furthermore, anaerobic sprouting increased fruity descriptors, but over-sprouting did not improve overall attributes while producing both fermentative and vegetable descriptors. Therefore, suitable anaerobic germination of green coffee beans can be used as a new strategy to improve the flavor of commercial Arabica coffee.
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Affiliation(s)
- Yanbing Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China,Dehong Tropical Agriculture Research Institute of Yunnan, Ruili, 678600, Yunnan, PR China,College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, PR China
| | - Xiaoyuan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China,Dehong Tropical Agriculture Research Institute of Yunnan, Ruili, 678600, Yunnan, PR China,College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, PR China,Corresponding author. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China.
| | - Guilin Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Abdulbaset Al-Romaima
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Xingrong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Jinhong Li
- Dehong Tropical Agriculture Research Institute of Yunnan, Ruili, 678600, Yunnan, PR China
| | - Xuehui Bai
- Dehong Tropical Agriculture Research Institute of Yunnan, Ruili, 678600, Yunnan, PR China
| | - Zhongrong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China
| | - Minghua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China,Corresponding author. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, PR China.
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Antoine G, Vaissayre V, Meile JC, Payet J, Conéjéro G, Costet L, Fock-Bastide I, Joët T, Dussert S. Diterpenes of Coffea seeds show antifungal and anti-insect activities and are transferred from the endosperm to the seedling after germination. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 194:627-637. [PMID: 36535102 DOI: 10.1016/j.plaphy.2022.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/08/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Species of the genus Coffea accumulate diterpenes of the ent-kaurane family in the endosperm of their seeds, of which cafestol and kahweol are the most abundant. The diterpenes are mainly stored in esterified form with fatty acids, mostly palmitate. In contrast to the numerous studies on their effects on human health and therapeutic applications, nothing was previously known about their biological and ecological role in planta. The antifungal and anti-insect activities of cafestol and cafestol palmitate were thus investigated in this study. Cafestol significantly affected the mycelial growth of five of the six phytopathogenic fungi tested. It also greatly reduced the percentage of pupation of larvae and the pupae and adult masses of one of the two fruit flies tested. By contrast, cafestol palmitate had no significant effect against any of the fungi and insects studied. Using confocal imaging and oil body isolation and analysis, we showed that diterpenes are localized in endosperm oil bodies, suggesting that esterification with fatty acids enables the accumulation of large amounts of diterpenes in a non-toxic form. Diterpene measurements in all organs of seedlings recovered from whole seed germination or embryos isolated from the endosperm showed that diterpenes are transferred from the endosperm to the cotyledons during seedling growth and then distributed to all organs, including the hypocotyl and the root. Collectively, our findings show that coffee diterpenes are broad-spectrum defence compounds that protect not only the seed on the mother plant and in the soil, but also the seedling after germination.
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Affiliation(s)
- Gaëlle Antoine
- DIADE, Univ Montpellier, IRD, CIRAD, Montpellier, France; PVBMT, Univ Réunion, CIRAD, La Réunion, Saint-Pierre, France
| | | | - Jean-Christophe Meile
- QUALISUD, Univ Montpellier, CIRAD, Institut Agro, Univ Avignon, Univ La Réunion, IRD, Montpellier, France
| | - Jim Payet
- PVBMT, Univ Réunion, CIRAD, La Réunion, Saint-Pierre, France
| | | | - Laurent Costet
- PVBMT, Univ Réunion, CIRAD, La Réunion, Saint-Pierre, France
| | | | - Thierry Joët
- DIADE, Univ Montpellier, IRD, CIRAD, Montpellier, France
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Does Coffee Have Terroir and How Should It Be Assessed? Foods 2022; 11:foods11131907. [PMID: 35804722 PMCID: PMC9265435 DOI: 10.3390/foods11131907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/15/2022] [Accepted: 06/24/2022] [Indexed: 01/27/2023] Open
Abstract
The terroir of coffee is defined as the unique sensory experience derived from a single origin roasted coffee that embodies its source. Environmental conditions such as temperature, altitude, shade cover, rainfall, and agronomy are considered the major parameters that define coffee terroir. However, many other parameters such as post-harvest processing, roasting, grinding, and brewing can combine to influence the perception of terroir. In this review, we discuss the contribution of these parameters and their influence on coffee terroir. Assessment of terroir requires defined sensory descriptors, as provided by the World Coffee Research Lexicon, and standardized roast level, grind size, and brew method. The choice of the post-harvest processing method is often environmentally dependent, suggesting that an inclusion into the coffee terroir definition is warranted. Coffee terroir is often not intentionally created but results from the contributions of the Coffea species and variety planted, environmental and agricultural parameters, and both the harvest and post-harvest method used. The unique combination of these parameters gives the consumer a unique cup of coffee, reminiscent of the place the coffee was produced.
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Gonçalinho GHF, Nascimento JRDO, Mioto BM, Amato RV, Moretti MA, Strunz CMC, César LAM, Mansur ADP. Effects of Coffee on Sirtuin-1, Homocysteine, and Cholesterol of Healthy Adults: Does the Coffee Powder Matter? J Clin Med 2022; 11:jcm11112985. [PMID: 35683374 PMCID: PMC9181040 DOI: 10.3390/jcm11112985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/12/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Coffee is one of the most popular beverages globally and contains several bioactive compounds that are relevant to human health. Many nutritional strategies modulate sirtuin-1, thereby impacting aging and cardiometabolic health. This study investigated the influence of different blended coffees on serum sirtuin-1, blood lipids, and plasma homocysteine. Methods: An eight-week randomized clinical trial that included 53 healthy adults of both sexes analyzed the effects of daily intake of 450 to 600 mL of pure Arabica or blended (Arabica + Robusta) coffee intake of filtered coffee on blood sirtuin-1, lipids, and homocysteine. Results: Both Arabica and blended coffees similarly increased serum sirtuin-1 concentration, from 0.51 to 0.58 ng/mL (p = 0.004) and from 0.40 to 0.49 ng/mL (p = 0.003), respectively, without changing plasma homocysteine, folic acid, glucose, and CRP. However, the blended coffee intake increased total cholesterol from 4.70 to 5.17 mmol/L (p < 0.001) and LDL-cholesterol from 2.98 to 3.32 mmol/L (p < 0.001), as well as HDL-c from 1.26 to 1.36 mmol/L (p < 0.001). Conclusion: Both coffee powders increased sirtuin-1 expression, but our results suggest that blended coffee had hypercholesterolemic effects which could increase cardiovascular risk. Therefore, preference should be given to Arabica coffee for the best cardiometabolic benefits of coffee.
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Affiliation(s)
- Gustavo Henrique Ferreira Gonçalinho
- Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (G.H.F.G.); (J.R.d.O.N.); (L.A.M.C.)
- Servico de Prevencao e Reabilitacao Cardiovascular, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil
| | - José Rafael de Oliveira Nascimento
- Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (G.H.F.G.); (J.R.d.O.N.); (L.A.M.C.)
- Servico de Prevencao e Reabilitacao Cardiovascular, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil
| | - Bruno Mahler Mioto
- Unidade Clinica de Coronariopatias Cronicas, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil; (B.M.M.); (R.V.A.); (M.A.M.)
| | - Reynaldo Vicente Amato
- Unidade Clinica de Coronariopatias Cronicas, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil; (B.M.M.); (R.V.A.); (M.A.M.)
| | - Miguel Antonio Moretti
- Unidade Clinica de Coronariopatias Cronicas, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil; (B.M.M.); (R.V.A.); (M.A.M.)
| | - Célia Maria Cassaro Strunz
- Laboratorio de Analises Clínicas, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil;
| | - Luiz Antonio Machado César
- Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (G.H.F.G.); (J.R.d.O.N.); (L.A.M.C.)
- Unidade Clinica de Coronariopatias Cronicas, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil; (B.M.M.); (R.V.A.); (M.A.M.)
| | - Antonio de Padua Mansur
- Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (G.H.F.G.); (J.R.d.O.N.); (L.A.M.C.)
- Servico de Prevencao e Reabilitacao Cardiovascular, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 05403-900, SP, Brazil
- Correspondence:
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Pazmiño-Arteaga J, Gallardo C, González-Rodríguez T, Winkler R. Loss of Sensory Cup Quality: Physiological and Chemical Changes during Green Coffee Storage. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2022; 77:1-11. [PMID: 35233705 DOI: 10.1007/s11130-022-00953-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Coffee is one of the most valued consumer products. Surprisingly, there is limited scientific knowledge about the biochemical processes during the storage of green coffee that affects its sensory quality. This review analyzes the impact of the different variables involved in the green coffee storage on quality from a chemical point of view. Further, it highlights the relationship between the physiological processes of the grain, its viability, and shelf-life. Notably, the storage conditions and postharvest treatment affect both the longevity and the sensory quality of the coffee, probably due to the biological behavior of green coffee. Various studies found modifications in their chemical profiles involving carbohydrates, lipids, proteins/amino acids, and phenolic compounds. To make future studies more comparable, we recommend standardized protocols for evaluating and linking the sensory coffee quality with instrumental analysis methods and pre-defined settings for experimental storage conditions.
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Affiliation(s)
- Jhonathan Pazmiño-Arteaga
- Grupo de investigación La Salada, Servicio Nacional de Aprendizaje SENA, Km. 6 Vía Caldas La Pintada, Caldas, Antioquia, Colombia
- Grupo de Estabilidad de Medicamentos, Cosméticos y Alimentos GEMCA, Universidad de Antioquia, Cl. 67 #53-108, Medellín, Antioquia, Colombia
| | - Cecilia Gallardo
- Grupo de Estabilidad de Medicamentos, Cosméticos y Alimentos GEMCA, Universidad de Antioquia, Cl. 67 #53-108, Medellín, Antioquia, Colombia
| | - Tzitziki González-Rodríguez
- Department of Biotechnology and Biochemistry, Center for Research and Advanced Studies (CINVESTAV) Irapuato, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36824, Irapuato, Gto, Mexico
| | - Robert Winkler
- Department of Biotechnology and Biochemistry, Center for Research and Advanced Studies (CINVESTAV) Irapuato, Km. 9.6 Libramiento Norte Carr. Irapuato-León, 36824, Irapuato, Gto, Mexico.
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Mediani A, Kamal N, Lee SY, Abas F, Farag MA. Green Extraction Methods for Isolation of Bioactive Substances from Coffee Seed and Spent. SEPARATION & PURIFICATION REVIEWS 2022. [DOI: 10.1080/15422119.2022.2027444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ahmed Mediani
- Metabolomics Research Laboratory, Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, UKM Bangi, 43600, Malaysia
| | - Nurkhalida Kamal
- Metabolomics Research Laboratory, Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, UKM Bangi, 43600, Malaysia
| | - Soo Yee Lee
- Natural Medicines and Products Research Laboratory (NaturMeds), Institute of Bioscience Universiti Putra Malaysia, 43400 Serdang, Malaysia
| | - Faridah Abas
- Natural Medicines and Products Research Laboratory (NaturMeds), Institute of Bioscience Universiti Putra Malaysia, 43400 Serdang, Malaysia
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Malaysia
| | - Mohamed A. Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo 11562, Egypt
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Hall RD, Trevisan F, de Vos RCH. Coffee berry and green bean chemistry - Opportunities for improving cup quality and crop circularity. Food Res Int 2022; 151:110825. [PMID: 34980376 DOI: 10.1016/j.foodres.2021.110825] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 11/04/2022]
Abstract
Coffee cup quality is primarily determined by the type and variety of green beans chosen and the roasting regime used. Furthermore, green coffee beans are not only the starting point for the production of all coffee beverages but also are a major source of revenue for many sub-tropical countries. Green bean quality is directly related to its biochemical composition which is influenced by genetic and environmental factors. Post-harvest, on-farm processing methods are now particularly recognised as being influential to bean chemistry and final cup quality. However, research on green coffee has been limited and results are fragmented. Despite this, there are already indications that multiple factors play a role in determining green coffee chemistry - including plant cultivation/fruit ripening issues and ending with farmer practices and post-harvest storage conditions. Here, we provide the first overview of the knowledge determined so far specifically for pre-factory, green coffee composition. In addition, the potential of coffee waste biomass in a biobased economy context for the delivery of useful bioactives is described as this is becoming a topic of growing relevance within the coffee industry. We draw attention to a general lack of consistency in experimentation and reporting and call for a more intensive and united effort to build up our knowledge both of green bean composition and also how perturbations in genetic and environmental factors impact bean chemistry, crop sustainability and ultimately, cup quality.
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Affiliation(s)
- Robert D Hall
- Laboratory of Plant Physiology, Wageningen University & Research, P.O. Box 16, 6700 AA Wageningen, the Netherlands; Business Unit Bioscience, Wageningen University & Research, P.O. Box 16, 6700 AA Wageningen, the Netherlands.
| | - Fabio Trevisan
- Laboratory of Plant Physiology, Wageningen University & Research, P.O. Box 16, 6700 AA Wageningen, the Netherlands
| | - Ric C H de Vos
- Business Unit Bioscience, Wageningen University & Research, P.O. Box 16, 6700 AA Wageningen, the Netherlands
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10
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Ballesteros D, Fanega-Sleziak N, Davies RM. Cryopreservation of Seeds and Seed Embryos in Orthodox-, Intermediate-, and Recalcitrant-Seeded Species. Methods Mol Biol 2021; 2180:663-682. [PMID: 32797442 DOI: 10.1007/978-1-0716-0783-1_36] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Seeds are one of the preferable and most used sources of germplasm for the ex situ preservation of plant genetic resources. They are generally stored dry at -20 °C in seed banks following international standards. However, some seeds do not tolerate drying and/or storage at -20 °C, or present short lifespans at these conditions. For them cryopreservation is indicated for long-term preservation. When seeds tolerate desiccation (i.e., orthodox seeds), they can be dried at about 32 ± 3% relative humidity at 18 °C and stored in the vapor phase of liquid nitrogen. This is the method followed in the Millennium Seed Bank of the Royal Botanic Gardens, Kew, for wild species with short lifespans in the standard conditions of seed banks. When seeds do not tolerate desiccation (i.e., recalcitrant seeds) or their tolerance to desiccation and/or -20 °C storage is limited (i.e., intermediate seeds), drying and cooling procedures must be adjusted, and often, cryoprotection is also required. Some methods are detailed for diverse species of temperate and tropical origin.
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Anti-Platelet Aggregation and Anti-Cyclooxygenase Activities for a Range of Coffee Extracts ( Coffea arabica). Molecules 2020; 26:molecules26010010. [PMID: 33375091 PMCID: PMC7792775 DOI: 10.3390/molecules26010010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 01/24/2023] Open
Abstract
Coffee is rich in caffeine (CF), chlorogenic acid (CGA) and phenolics. Differing types of coffee beverages and brewing procedures may result in differences in total phenolic contents (TPC) and biological activities. Inflammation and increases of platelet activation and aggregation can lead to thrombosis. We focused on determining the chemical composition, antioxidant activity and inhibitory effects on agonist-induced platelet aggregation and cyclooxygenase (COX) of coffee beverages in relation to their preparation method. We prepared instant coffee and brewed coffee beverages using drip, espresso, and boiling techniques. Coffee extracts were assayed for their CF and CGA contents using HPLC, TPC using colorimetry, platelet aggregation with an aggregometer, and COX activity using ELISA. The findings have shown all coffee extracts, except the decaffeinated types, contained nearly equal amounts of CF, CGA, and TPC. Inhibitory effects of coffee extracts on platelet aggregation differed depending on the activation pathways induced by different agonists. All espresso, drip and boiled coffee extracts caused dose dependent inhibition of platelet aggregation induced by ADP, collagen, epinephrine, and arachidonic acid (ARA). The most marked inhibition was seen at low doses of collagen or ARA. Espresso and drip extracts inhibited collagen-induced platelet aggregation more than purified caffeine or CGA. Espresso, boiled and drip coffee extracts were also a more potent inhibitors of COX-1 and COX-2 than purified caffeine or CGA. We conclude that inhibition of platelet aggregation and COX-1 and COX-2 may contribute to anti-platelet and anti-inflammatory effects of espresso and drip coffee extracts.
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12
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Lipid Thermal Fingerprints of Long-term Stored Seeds of Brassicaceae. PLANTS 2019; 8:plants8100414. [PMID: 31615156 PMCID: PMC6843794 DOI: 10.3390/plants8100414] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/24/2019] [Accepted: 09/28/2019] [Indexed: 11/23/2022]
Abstract
Thermal fingerprints for seeds of 20 crop wild relatives of Brassicaceae stored for 8 to 44 years at the Plant Germplasm Bank—Universidad Politécnica de Madrid and the Royal Botanic Gardens, Kew’s Millennium Seed Bank—were generated using differential scanning calorimetry (DSC) and analyzed in relation to storage stability. Relatively poor storing oily seeds at −20 °C tended to have lipids with crystallization and melting transitions spread over a wide temperature range (c. 40 °C) that spanned the storage temperature, plus a melting end temperature of around 15 °C. We postulated that in dry storage, the variable longevity in Brassicaceae seeds could be associated with the presence of a metastable lipid phase at the temperature at which they are being stored. Consistent with that, when high-quality seed samples of various species were assessed after banking at −5 to −10 °C for c. 40 years, melting end temperatures were observed to be much lower (c. 0 to −30 °C) and multiple lipid phases did not occur at the storage temperature. We conclude that multiple features of the seed lipid thermal fingerprint could be used as biophysical markers to predict potential poor performance of oily seeds during long-term, decadal storage.
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Chau MM, Chambers T, Weisenberger L, Keir M, Kroessig TI, Wolkis D, Kam R, Yoshinaga AY. Seed freeze sensitivity and ex situ longevity of 295 species in the native Hawaiian flora. AMERICAN JOURNAL OF BOTANY 2019; 106:1248-1270. [PMID: 31502257 PMCID: PMC6856683 DOI: 10.1002/ajb2.1351] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/24/2019] [Indexed: 05/20/2023]
Abstract
PREMISE Ex situ seed banking is critical for plant conservation globally, especially for threatened floras in tropical ecosystems like Hawai'i. Seed bank managers must maximize longevity, and species managers must plan restoration before seeds lose viability. Previous observations suggested some native Hawaiian seeds lost viability in frozen storage (-18°C). We investigated seed storage behavior in the Hawaiian flora to optimize storage conditions and recommend re-collection intervals (RCI) to maximize viability of stored seeds. METHODS Using 20+ years of real-time seed storage viability data, we tested freeze sensitivity for 197 species and calculated RCIs for 295 species. Using paired tests of accessions stored >2 yr at 5°C and -18°C, we developed an index of relative performance to determine freeze sensitivity. We calculated RCIs at 70% of highest germination (P70). RESULTS We identified four families (Campanulaceae, Cyperaceae, Rubiaceae, and Urticaceae) and four genera with seed freeze sensitivity and six additional genera with likely freeze sensitivity. Storage longevity was variable, but 195 species had viability >70% at the most recent tests (1 to 20+ yr), 123 species had RCIs >10 yr, and 45 species had RCIs <5 yr. CONCLUSIONS Freeze sensitive storage behavior is more widely observed in Hawai'i than any other regional flora, perhaps due to insufficient testing elsewhere. We present a new protocol to test seed freeze sensitivity, which is often not evident until 2-5 years of storage. Re-collection intervals will guide restoration practices in Hawai'i, and results inform seed conservation efforts globally, especially tropical and subtropical regions.
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Affiliation(s)
- Marian M. Chau
- Lyon ArboretumUniversity of Hawai‘i at MānoaHonoluluHI96822USA
| | - Timothy Chambers
- U. S. Army Natural Resources Program on O‘ahuSchofield BarracksHI96857USA
| | - Lauren Weisenberger
- U. S. Fish and Wildlife ServicePacific Islands Fish and Wildlife OfficeHonoluluHI96850USA
| | - Matthew Keir
- State of Hawai‘i Department of Land and Natural Resources – Division of Forestry and WildlifeHonoluluHI96813USA
| | | | | | - Roy Kam
- U. S. Army Natural Resources Program on O‘ahuSchofield BarracksHI96857USA
| | - Alvin Y. Yoshinaga
- Lyon ArboretumUniversity of Hawai‘i at MānoaHonoluluHI96822USA
- Center for Conservation Research and TrainingPacific Biosciences Research CenterUniversity of Hawai‘i at MānoaHonoluluHI96822USA (Retired)
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14
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Effect of Co-Inoculation with Pichia fermentans and Pediococcus acidilactici on Metabolite Produced During Fermentation and Volatile Composition of Coffee Beans. FERMENTATION-BASEL 2019. [DOI: 10.3390/fermentation5030067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Removal of the mucilage layer of coffee fruits by a fermentation process has became an interesting strategy to improve coffee quality, which is able to assist the formation of flavored molecules. In this study, four sets of inoculation protocols were evaluated using ripe and immature coffee fruits, respectively, including (i) pure culture fermentation with Pichia fermentans, (ii) pure culture fermentation with Pediococcus acidilactici, (ii) combined fermentation with P. fermentans and P. acidilactici, and (iv) spontaneous, non-inoculated control. The initial pulp sugar concentration of ripe coffee fruits (0.57 and 1.13 g/L glucose and fructose content, respectively) was significantly higher than immature coffee pulp (0.13 and 0.26 g/L glucose and fructose content, respectively). Combined inoculation with P. fermentans and P. acidilactici of ripe coffee beans increased pulp sugar consumption and production of metabolites (lactic acid, ethanol, and ethyl acetate), evidencing a positive synergic interaction between these two microbial groups. On the other hand, when immature coffee fruits were used, only pure culture inoculation with P. fermentans was able to improve metabolite formation during fermentation, while combined treatment showed no significant effect. Altogether, 30 volatile compounds were identified and semi-quantified with HS- solid phase microextraction (SPME)-gas chromatography coupled to mass spectrophotometry (GC/MS) in fermented coffee beans. In comparison with pure cultures and spontaneous process, combined treatment prominently enhanced the aroma complexity of ripe coffee beans, with a sharp increase in benzeneacetaldehyde, 2-heptanol, and benzylalcohol. Consistent with the monitoring of the fermentation process, only P. fermentans treatment was able to impact the volatile composition of immature coffee beans. The major impacted compounds were 2-hexanol, nonanal, and D-limonene. In summary, this study demonstrated the great potential of the combined use of yeast and lactic acid bacteria to improve fermentation efficiency and to positively influence the chemical composition of coffee beans. Further studies are still required to investigate the mechanisms of synergism between these two microbial groups during the fermentation process and influence the sensory properties of coffee products.
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15
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Ballesteros D, Hill LM, Lynch RT, Pritchard HW, Walters C. Longevity of Preserved Germplasm: The Temperature Dependency of Aging Reactions in Glassy Matrices of Dried Fern Spores. PLANT & CELL PHYSIOLOGY 2019; 60:376-392. [PMID: 30398653 DOI: 10.1093/pcp/pcy217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 11/01/2018] [Indexed: 05/15/2023]
Abstract
This study explores the temperature dependency of the aging rate in dry cells over a broad temperature range encompassing the fluid to solid transition (Tg) and well below. Spores from diverse species of eight families of ferns were stored at temperatures ranging from +45�C to approximately -176�C (vapor phase above liquid nitrogen), and viability was monitored periodically for up to 4,300 d (∼12 years). Accompanying measurements using differential scanning calorimetry (DSC) provide insights into structural changes that occur, such as Tg between +45 and -20�C (depending on moisture), and triacylglycerol (TAG) crystallization between -5 and -35�C (depending on species). We detected aging even at cryogenic temperatures, which we consider analogous to unscheduled degradation of pharmaceuticals stored well below Tg caused by a shift in the nature of molecular motions that dominate chemical reactivity. We occasionally observed faster aging of spores stored at -18�C (conventional freezer) compared with 5�C (refrigerator), and linked this with mobility and crystallization within TAGs, which probably influences molecular motion of dried cytoplasm in a narrow temperature range. Temperature dependency of longevity was remarkably similar among diverse fern spores, despite widely disparate aging rates; this provides a powerful tool to predict deterioration of germplasm preserved in the solid state. Future work will increase our understanding of molecular organization and composition contributing to differences in longevity.
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Affiliation(s)
- Daniel Ballesteros
- USDA-ARS National Laboratory for Genetic Resources Preservation, 1111 South Mason Street, Fort Collins, CO, USA
- Center for Conservation and Research of Endangered Wildlife (CREW), Cincinnati Zoo and Botanical Garden, 3400 Vine Street, Cincinnati, OH, USA
- Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst Place, Ardingly, UK
| | - Lisa M Hill
- USDA-ARS National Laboratory for Genetic Resources Preservation, 1111 South Mason Street, Fort Collins, CO, USA
| | - Ryan T Lynch
- USDA-ARS National Laboratory for Genetic Resources Preservation, 1111 South Mason Street, Fort Collins, CO, USA
| | - Hugh W Pritchard
- Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst Place, Ardingly, UK
| | - Christina Walters
- USDA-ARS National Laboratory for Genetic Resources Preservation, 1111 South Mason Street, Fort Collins, CO, USA
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16
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Quintero FOC, Pinto LG, Barsalobres-Cavallari CF, Arcuri MDLC, Pino LE, Peres LEP, Maluf MP, Maia IG. Identification of a seed maturation protein gene from Coffea arabica (CaSMP) and analysis of its promoter activity in tomato. PLANT CELL REPORTS 2018; 37:1257-1268. [PMID: 29947954 DOI: 10.1007/s00299-018-2310-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
A seed maturation protein gene (CaSMP) from Coffea arabica is expressed in the endosperm of yellow/green fruits. The CaSMP promoter drives reporter expression in the seeds of immature tomato fruits. In this report, an expressed sequence tag-based approach was used to identify a seed-specific candidate gene for promoter isolation in Coffea arabica. The tissue-specific expression of the cognate gene (CaSMP), which encodes a yet uncharacterized coffee seed maturation protein, was validated by RT-qPCR. Additional expression analysis during coffee fruit development revealed higher levels of CaSMP transcript accumulation in the yellow/green phenological stage. Moreover, CaSMP was preferentially expressed in the endosperm and was down-regulated during water imbibition of the seeds. The presence of regulatory cis-elements known to be involved in seed- and endosperm-specific expression was observed in the CaSMP 5'-upstream region amplified by genome walking (GW). Additional histochemical analysis of transgenic tomato (cv. Micro-Tom) lines harboring the GW-amplified fragment (~ 1.4 kb) fused to uidA reporter gene confirmed promoter activity in the ovule of immature tomato fruits, while no activity was observed in the seeds of ripening fruits and in the other organs/tissues examined. These results indicate that the CaSMP promoter can be used to drive transgene expression in coffee beans and tomato seeds, thus representing a promising biotechnological tool.
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Affiliation(s)
- Fabíola OCampo Quintero
- Department of Genetics, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, 18618-689, Brazil
| | - Layra G Pinto
- Department of Genetics, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, 18618-689, Brazil
| | - Carla F Barsalobres-Cavallari
- Department of Genetics, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, 18618-689, Brazil
| | - Mariana de Lara Campos Arcuri
- Department of Genetics, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, 18618-689, Brazil
| | - Lilian Ellen Pino
- Department of Biological Sciences (LCB), Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), University of Sao Paulo (USP), Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Lázaro Eustáquio Pereira Peres
- Department of Biological Sciences (LCB), Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), University of Sao Paulo (USP), Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Mirian P Maluf
- Embrapa Coffee and Coffee Center Alcides Carvalho, Agronomic Institute of Campinas, Campinas, Sao Paulo, 13012-970, Brazil
| | - Ivan G Maia
- Department of Genetics, Institute of Biosciences, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, 18618-689, Brazil.
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Dussert S, Serret J, Bastos-Siqueira A, Morcillo F, Déchamp E, Rofidal V, Lashermes P, Etienne H, JOët T. Integrative analysis of the late maturation programme and desiccation tolerance mechanisms in intermediate coffee seeds. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:1583-1597. [PMID: 29361125 PMCID: PMC5888931 DOI: 10.1093/jxb/erx492] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 12/20/2017] [Indexed: 05/24/2023]
Abstract
The 'intermediate seed' category was defined in the early 1990s using coffee (Coffea arabica) as a model. In contrast to orthodox seeds, intermediate seeds cannot survive complete drying, which is a major constraint for seed storage and has implications for both biodiversity conservation and agricultural purposes. However, intermediate seeds are considerably more tolerant to drying than recalcitrant seeds, which are highly sensitive to desiccation. To gain insight into the mechanisms governing such differences, changes in desiccation tolerance (DT), hormone contents, and the transcriptome were analysed in developing coffee seeds. Acquisition of DT coincided with a dramatic transcriptional switch characterised by the repression of primary metabolism, photosynthesis, and respiration, and the up-regulation of genes coding for late-embryogenesis abundant (LEA) proteins, heat-shock proteins (HSPs), and antioxidant enzymes. Analysis of the heat-stable proteome in mature coffee seeds confirmed the accumulation of LEA proteins identified at the transcript level. Transcriptome analysis also suggested a major role for ABA and for the transcription factors CaHSFA9, CaDREB2G, CaANAC029, CaPLATZ, and CaDOG-like in DT acquisition. The ability of CaHSFA9 and CaDREB2G to trigger HSP gene transcription was validated by Agrobacterium-mediated transformation of coffee somatic embryos.
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Affiliation(s)
| | | | | | | | | | - Valérie Rofidal
- Biochimie et physiologie moléculaire des plantes, CNRS, INRA, Montpellier Supagro, Université Montpellier, France
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18
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Kumar A, Giridhar P. Salicylic acid and methyljasmonate restore the transcription of caffeine biosynthetic N-methyltransferases from a transcription inhibition noticed during late endosperm maturation in coffee. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.plgene.2015.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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19
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Walters C. Orthodoxy, recalcitrance and in-between: describing variation in seed storage characteristics using threshold responses to water loss. PLANTA 2015; 242:397-406. [PMID: 25985842 DOI: 10.1007/s00425-015-2312-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 04/20/2015] [Indexed: 05/15/2023]
Abstract
Discrete categories of seed physiology can be explained through a unified concept of the structural and molecular mobility responses within cells to drying. Tolerance of desiccation is typically described by a threshold or low water content limit to survival. This convention provides fairly good distinction between orthodox and recalcitrant seeds, which show thresholds of less than about 0.07 and greater than about 0.2 g H2O g DW(-1), respectively. Threshold water contents, however, are not direct measures of the intensity of water stress tolerated by seeds, nor are they measures of cell response to water stress. More direct criteria, that accommodate both spatial and temporal effects of water loss, are required to explain variation of desiccation tolerance and longevity in seeds from diverse genetic backgrounds and growth conditions. This essay presents the argument that changes in cellular volume directly quantify primary responses to desiccating stress in a context that also links damage, as cellular constituents compress, and protection, as compressed molecules form stabilizing structure. During desiccation, fluid cytoplasm solidifies, and the newly formed spatial relationships among molecules determine whether and how long viability is maintained. The diversity of seed behaviors suggests complexity and opportunity to discover molecules and mechanisms that regulate survival and perception of time in cells that lack metabolic function.
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Affiliation(s)
- Christina Walters
- USDA-ARS, National Center for Genetic Resources Preservation, 1111 South Mason Street, Fort Collins, CO, 80521, USA,
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20
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Waters DM, Arendt EK, Moroni AV. Overview on the mechanisms of coffee germination and fermentation and their significance for coffee and coffee beverage quality. Crit Rev Food Sci Nutr 2015; 57:259-274. [DOI: 10.1080/10408398.2014.902804] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Xia K, Hill LM, Li DZ, Walters C. Factors affecting stress tolerance in recalcitrant embryonic axes from seeds of four Quercus (Fagaceae) species native to the USA or China. ANNALS OF BOTANY 2014; 114:1747-59. [PMID: 25326139 PMCID: PMC4649694 DOI: 10.1093/aob/mcu193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 08/20/2014] [Indexed: 05/27/2023]
Abstract
BACKGROUND AND AIMS Quercus species are often considered 'foundation' components of several temperate and/or subtropical forest ecosystems. However, the populations of some species are declining and there is considerable urgency to develop ex situ conservation strategies. In this study, the storage physiology of seeds within Quercus was explored in order to determine factors that affect survival during cryopreservation and to provide a quantitative assessment of seed recalcitrance to support future studies of this complex trait. METHODS Water relations and survival of excised axes in response to water loss and cryo-exposure were compared for four Quercus species from subtropical China (Q. franchetii, Q. schottkyana) and temperate USA (Q. gambelii, Q. rubra). KEY RESULTS Seed tissues initially had high water contents and water potentials. Desiccation tolerance of the embryonic axis was not correlated with the post-shedding rainfall patterns where the samples originated. Instead, higher desiccation tolerance was observed in samples growing in areas with colder winters. Survival following cryo-exposure correlated with desiccation tolerance. Among species, plumule tissues were more sensitive than radicles to excision, desiccation and cryo-exposure, and this led to a higher proportion of abnormally developing embryos during recovery following stress. CONCLUSIONS Quercus species adapted to arid and semi-humid climates still produce recalcitrant seeds. The ability to avoid freezing rather than drought may be a more important selection factor to increase desiccation tolerance. Cryopreservation of recalcitrant germplasm from temperate species is currently feasible, whilst additional protective treatments are needed for ex situ conservation of Quercus from tropical and subtropical areas.
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Affiliation(s)
- Ke Xia
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80524, USA
| | - Lisa M Hill
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80524, USA
| | - De-Zhu Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Christina Walters
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80524, USA
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22
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Patui S, Clincon L, Peresson C, Zancani M, Conte L, Del Terra L, Navarini L, Vianello A, Braidot E. Lipase activity and antioxidant capacity in coffee (Coffea arabica L.) seeds during germination. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2014; 219-220:19-25. [PMID: 24576760 DOI: 10.1016/j.plantsci.2013.12.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/19/2013] [Accepted: 12/25/2013] [Indexed: 06/03/2023]
Abstract
In this paper, lipase activity was characterized in coffee (Coffea arabica L.) seeds to determine its involvement in lipid degradation during germination. The lipase activity, evaluated by a colorimetric method, was already present before imbibition of seeds and was further induced during the germination process. The activity showed a biphasic behaviour, which was similar in seeds either with or without endocarp (parchment), even though the phenomenon showed a delay in the former. The enzymatic activity was inhibited by tetrahydrolipstatin (THL), a selective and irreversible inhibitor of lipases, and by a polyclonal antibody raised against purified alkaline lipase from castor bean. The immunochemical analysis evidenced a protein of ca. 60 kDa, cross-reacting with an anti-lipase antibody, in coffee samples obtained from seeds of both types. Gas chromatographic analyses of free fatty acid (FFA) content confirmed the differences shown in the lipolytic activity of the samples with or without parchment, since FFA levels increased more rapidly in samples without parchment. Finally, the analyses of the antioxidant capacity showed that the presence of parchment was crucial for lowering the oxidation of the lipophylic fraction, being the seeds with parchment less prone to oxidation processes.
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Affiliation(s)
- Sonia Patui
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
| | - Luisa Clincon
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
| | - Carlo Peresson
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
| | - Marco Zancani
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
| | - Lanfranco Conte
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy.
| | | | | | - Angelo Vianello
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
| | - Enrico Braidot
- Department of Agricultural and Environmental Sciences, Unit of Plant Biology, University of Udine, via delle Scienze 91, 33100 Udine, Italy.
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de A Bojórquez-Quintal JE, Sánchez-Cach LA, Ku-González Á, de los Santos-Briones C, de Fátima Medina-Lara M, Echevarría-Machado I, Muñoz-Sánchez JA, Teresa Hernández Sotomayor SM, Estévez MM. Differential effects of aluminum on in vitro primary root growth, nutrient content and phospholipase C activity in coffee seedlings (Coffea arabica). J Inorg Biochem 2014; 134:39-48. [PMID: 24531533 DOI: 10.1016/j.jinorgbio.2014.01.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 01/21/2014] [Accepted: 01/23/2014] [Indexed: 12/17/2022]
Abstract
Coffea arabica is a woody species that grows in acid soils, where aluminum is available and may affect growth and productivity. To determine the effect of aluminum on primary root growth of C. arabica cv. Typica, seedlings were exposed over 30 days to different concentrations of AlCl3 (0, 100, 300 and 500 μM) in vitro. The aluminum effect on primary root growth was dose-dependent: low aluminum concentrations (100 and 300 μM) stimulated primary root growth (6.98 ± 0.15 and 6.45 ± 0.17 cm, respectively) compared to the control (0 μM; 5.24 ± 0.17 cm), while high concentrations (500 μM) induced damage to the root tips and inhibition of primary root growth (2.96 ± 0.28 cm). Aluminum (100 μM) also increased the K and Ca contents around 33% and 35% in the coffee roots. It is possible that aluminum toxicity resides in its association with cell nuclei in the meristematic region of the root. Additionally, after 30 days of treatment with aluminum, two different effects could be observed on phospholipase C (PLC) activity. In shoots, aluminum concentrations ≥ 300 μM inhibited more than 50% of PLC activity. In contrast, in roots a contrasting behavior was determined: low (100 μM) and toxic concentrations (500 μM) increased the activity of PLC (100%). These results suggest the possible involvement of the phosphoinositide signal transduction pathway, with the phospholipase C enzyme participating in the beneficial and toxic effects of aluminum in plants.
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Affiliation(s)
- Jesús E de A Bojórquez-Quintal
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Lucila A Sánchez-Cach
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Ángela Ku-González
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Cesar de los Santos-Briones
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - María de Fátima Medina-Lara
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Ileana Echevarría-Machado
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - José A Muñoz-Sánchez
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - S M Teresa Hernández Sotomayor
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Manuel Martínez Estévez
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43 # 130, Col. Chuburná de Hidalgo, 97200 Mérida, Yucatán, Mexico.
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24
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Antioxidant enzyme activity and hydrogen peroxide content during the drying of Arabica coffee beans. Eur Food Res Technol 2013. [DOI: 10.1007/s00217-013-1933-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Ramírez-Martínez A, Salgado-Cervantes M, Rodríguez-Jimenes G, García-Alvarado M, Cherblanc F, Bénet J. Water transport in parchment and endosperm of coffee bean. J FOOD ENG 2013. [DOI: 10.1016/j.jfoodeng.2012.08.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Abstract
Coffee (genus Coffea L.) is one of the most critical global agricultural crops. Many studies have focused on coffee plants and their associated insects. This review will summarize work specifically relating to coffee plant – pollinator interactions. We review the current status of coffee as a worldwide commodity, botanical aspects of coffee, and insects associated with coffee pollination, and we assess the current understanding of the role of different pollinator taxa in increasing fruit set and yield.
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Affiliation(s)
- H.T. Ngo
- Department of Biology, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - A.C. Mojica
- Cavite State University, Indang, Cavite, Philippines
| | - L. Packer
- Department of Biology, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
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Budzinski IGF, Santos TB, Sera T, Pot D, Vieira LGE, Pereira LFP. Expression patterns of three α-expansin isoforms in Coffea arabica during fruit development. PLANT BIOLOGY (STUTTGART, GERMANY) 2011; 13:462-71. [PMID: 21489097 DOI: 10.1111/j.1438-8677.2010.00400.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
As a first step towards understanding the physiological role and regulation of the expansin gene (EXP) family in Coffea arabica fruits during growth and maturation, we identified 11 expansin genes, nine belonging to the α-expansin family (EXPA), one EXLA and one EXLB, through in silico analysis of expressed sequence tags (ESTs). Within the α-expansin family, three isoforms were selected for detailed examination based on their high expression in coffee fruits or because they were specifically induced during different fruit developmental stages, according to the EST information. The expression patterns were analysed in different fruit tissues (perisperm, endosperm and pericarp) of C. arabica cv. IAPAR-59 and C. arabica cv. IAPAR-59 Graúdo, the latter being a closely related cultivar with a larger fruit size. Accumulation of CaEXPA1 and CaEXPA3 transcripts was high in the perisperm (tissue responsible for coffee bean size) and in the early stages of pericarp development. Transcripts of CaEXPA2 were detected only in the pericarp during the later stages of fruit maturation and ripening. There was no detectable transcription of the three EXPs analysed in the endosperm. The observed differences in mRNA expression levels of CaEXPA1 and CaEXP3 in the perisperm of IAPAR-59 and IAPAR-59 Graúdo suggest the participation of these two isoforms in the regulation of grain size.
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Affiliation(s)
- I G F Budzinski
- Instituto Agronômico do Paraná, IAPAR, LBI-AMG, Londrina, Paraná, Brazil
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Tarzia A, Dos Santos Scholz MB, De Oliveira Petkowicz CL. Influence of the postharvest processing method on polysaccharides and coffee beverages. Int J Food Sci Technol 2010. [DOI: 10.1111/j.1365-2621.2010.02388.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Salmona J, Dussert S, Descroix F, de Kochko A, Bertrand B, Joët T. Deciphering transcriptional networks that govern Coffea arabica seed development using combined cDNA array and real-time RT-PCR approaches. PLANT MOLECULAR BIOLOGY 2008; 66:105-24. [PMID: 18026845 DOI: 10.1007/s11103-007-9256-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Accepted: 10/27/2007] [Indexed: 05/04/2023]
Abstract
Due to its economic importance, Coffea arabica is becoming the subject of increasing genomic research and, in particular, the genes involved in the final chemical composition of the bean and the sensorial quality of the coffee beverage. The aim of the present study was to decipher the transcriptional networks that govern the development of the C. arabica seed, a model for non-orthodox albuminous seeds of tropical origin. For this purpose, we developed a transcriptomic approach combining two techniques: targeted cDNA arrays, containing 266 selected candidate gene sequences, and real-time RT-PCR on a large subset of 111 genes. The combination of the two techniques allowed us to limit detection of false positives and to reveal the advantages of using large real-time RT-PCR screening. Multivariate analysis was conducted on both datasets and results were broadly convergent. First, principle component analysis (PCA) revealed a dramatic re-programming of the transcriptional machinery between early cell division and elongation, storage and maturation phases. Second, hierarchical clustering analysis (HCA) led to the identification of 11 distinct patterns of gene expression during seed development as well as to the detection of genes expressed at specific developmental stages that can be used as functional markers of phenological changes. In addition, this study led to the description of gene expression profiles for quality-related genes, most of them formerly uncharacterised in Coffea. Their involvement in storage compound synthesis and accumulation during endosperm development and final metabolic re-adjustments during maturation is discussed.
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Affiliation(s)
- Jordi Salmona
- IRD, UMR DIAPC, Pôle de Protection des Plantes, 7 Chemin de l'IRAT, ligne Paradis, 97410 Saint Pierre, France
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Abstract
After oil, coffee is the most valuable traded commodity worldwide. In this review we highlighted some aspects of coffee growth and development in addition to focusing our attention on recent advances on the (eco)physiology of production in both Coffea arabica and C. canephora, which together account for 99% of the world coffee bean production. This review is organized into sections dealing with (i) climatic factors and environmental requirements, (ii) root and shoot growth, (iii) blossoming synchronisation, fruiting and cup quality, (iv) competition between vegetative and reproductive growth and branch die-back, (v) photosynthesis and crop yield, (vi) physiological components of crop yield, (vii) shading and agroforestry systems, and (viii) high-density plantings.
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Volk GM, Crane J, Caspersen AM, Kovach D, Gardner C, Walters C. Hydration of Cuphea seeds containing crystallised triacylglycerols. FUNCTIONAL PLANT BIOLOGY : FPB 2007; 34:360-367. [PMID: 32689363 DOI: 10.1071/fp06291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Accepted: 02/01/2007] [Indexed: 06/11/2023]
Abstract
Seeds that exhibit intermediate storage behaviour seem to die under conventional -18°C storage conditions. Cuphea wrightii A. Gray, C. laminuligera Koehne, C. carthagenensis (Jacq.) J.F. Macbr. and C. aequipetala Cav are considered sensitive to low temperature storage. The seeds of these species have triacylglycerols (TAG) that are crystalline at -18°C and melt when the seeds are warmed to >35°C. In contrast, seeds of tolerant species, C. lanceolata W.T. Aiton and C. hookeriana Walp., have TAG that crystallise at temperatures below -18°C and are fluid at 22°C. Cuphea seeds imbided while TAG are crystalline fail to germinate and exhibit visual damage. However, germination proceeded normally when dry seeds were warmed adequately to melt any crystalline TAG before imbibition. Reduced germination and cellular disruption including loss of lipid body compartmentation and fragmented protein bodies develop in seeds with crystalline TAG equilibrated to >0.1 g H2O g-1 DW. This damage cannot be reversed, even when seeds are dried before the damage can be visually detected. Results from this work reveal that the seeds of some species with intermediate type physiologies can be successfully placed into conventional -18 and -80°C storage facilities.
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Affiliation(s)
- Gayle M Volk
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80521, USA
| | - Jennifer Crane
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80521, USA
| | - Ann M Caspersen
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80521, USA
| | - David Kovach
- USDA-ARS North Central Regional Plant Introduction Station, Ames, IA 50011, USA
| | - Candice Gardner
- USDA-ARS North Central Regional Plant Introduction Station, Ames, IA 50011, USA
| | - Christina Walters
- USDA-ARS National Center for Genetic Resources Preservation, Fort Collins, CO 80521, USA
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