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CmMYB3-like negatively regulates anthocyanin biosynthesis and flower color formation during the post-flowering stage in Chrysanthemum morifolium

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Horticultural Plant Journal 2024年第1期10卷 194-204页

作者： Lijie Zhou Shenhui Liu Yiguang Wang Yuxi Wang Aiping Song Jiafu Jiang Sumei Chen Zhiyong Guan Fadi Chen State Key Laboratory of Crop Genetics and Germplasm Enhancement The Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China

Color fading caused by a decrease in anthocyanin accumulation during the post-flowering stage significantly affects postharvest quality of chrysanthemum.However,the underlying mechanism by which anthocyanin accumulation decreases during the post-flowering stage still unclear,which greatly restricts design of molecular breeding in chrysanthemum.Here,a chrysanthemum SG7 R2R3 MYB transcription factor(TF),CmMYB3-like,was identified to have a function in regulating anthocyanin biosynthesis during the post-flowering stage.Quantitative real time PCR(qRT-PCR)assays showed that the expression of CmMYB3-like was gradually downregulated when anthocyanin content increased during the flowering stage and was significantly upregulated during the post-flowering stage.Genetic transformation of chrysanthemum and dual-luciferase assays in N.benthamiana leaves showed that CmMYB3-like suppressed anthocyanin accumulation by inhibiting the transcription of CmCHS and CmANS directly and that of CmF3H indirectly.However,overexpression or suppression of CmMYB3-like did not affect the biosynthesis of flavones or flavonols.Genetic transformation of chrysanthemum revealed that the overexpression of CmMYB3-like inhibited anthocyanin accumulation,but its suppression prevented the decrease in anthocyanin accumulation during the post-flowering stage.Our results revealed a crucial role of CmMYB3-like in regulating the color of petals during the post-flowering stage and provided a target gene for molecular design breeding to improve the postharvest quality of chrysanthemum.

关键词： Post-flowering stage Color fading anthocyanins CmMYB3-like Chrysanthemum Molecular breeding

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Smart Colorimetric Corn Starch Films Combined with Anthocyanin-Loaded Glutenin-Carboxymethyl Chitosan Nanocomplexes for Freshness Monitoring of Chilled Pork

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Journal of Renewable Materials 2024年第1期12卷 71-87页

作者： Juan Yan Wenchao Li Xianfang Zhang Shisheng Liu College of Food Science and Engineering Hainan UniversityHaikou570100China Engineering Research Center for Utilization of Tropical Polysaccharide Resources Ministry of EducationHaikou570100China

In this study,intelligent,pH-responsive colorimetric films were prepared by encapsulating anthocyanins in nanocomplexes prepared from glutenin and carboxymethyl chitosan.These nanocomplexes were added to a corn starch matrix and used in the freshness monitoring of chilled pork.The effects of anthocyanin-loaded nanocomplexes on the physical,structural,and functional characteristics of the films were investigated.The addition of anthocyanin-loaded nanocomplexes increased the tensile strength,elongation at break,hydrophobicity,and light transmittance of the films while decreasing their water vapor permeability.This is because new hydrogen bonds are formed between the film components,resulting in a more homogeneous and dense structure.The colorimetric film has a significant color response to pH changes.These films were used in experiments on the freshness of chilled pork,in which the pH changes with changing freshness states.The results show that the colorimetric film can monitor changes in the freshness of chilled pork in real time,where orange,pink,and green represent the fresh,secondary fresh,and putrefied states of pork,respectively.Therefore,the intelligent colorimetric film developed in this study has good application potential in the food industry.

关键词： Carboxymethyl chitosan glutenin nanocomplexes anthocyanins pH indicator film chilled pork

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Discussion of the Composition of Jaboticaba in Different Processes

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Food and Nutrition Sciences 2024年第1期15卷 101-112页

作者： Ching-Hu Tsai Yi-Chun Lin Chih-Ta Liu Yo-Ju Chen Department of Long-Term Care Kang Ning University Taipei Department of Respiratory Therapy En Chu Kong Hospital New Taipei City Department of Thoracic Surgery Division En Chu Kong Hospital New Taipei City

This study discusses the composition analysis and comparison of Jaboticaba under different processing conditions for fermented liquid, jam, fruit powder, and fruit vinegar. The differences and comparison of the contents of total polyphenols, anthocyanins, resveratrol, superoxide dismutase, small molecular peptides and ellagic acid in their products were analyzed. After analysis and comparison of results, the content of total polyphenols was found to be the highest 44.82 ± 0.89 (mg/g) after being fermented directly from fresh fruit. The fresh fruit was dried at low temperature and ground into powder, with a maximum ellagic acid content of 12.799 ± 0.12 (mg/g). Fresh fruit was then made into jam, with the highest anthocyanin content of 57.39 ± 1.20 (mg/g). The fruit vinegar was produced by fermentation. Except for the content of small molecule peptides, which was similar to the content of fermentation broth and fruit powder, they were 20.63 ± 1.61, 23.84 ± 2.51 and 20.52 ± 1.21 (mg/g), and the rest of the composition was not as good as other samples. In the fresh fruit fermentation broth samples, resveratrol was produced and detected, and its content was 2.14 (mg/L), while it was not detected in other samples, and a superoxide dismutase (SOD)-like enzyme was detected in the fresh fruit fermentation broth. The highest activity was 49002.5 units/mL. Jaboticaba is prepared using a fermentation broth processing method with fresh fruit, and its total polyphenol content is higher than that of fruit powder, jam, and fruit vinegar. The commercial value of Jaboticaba and the establishment of composition content data are relatively improved, which is more promising for the future.

关键词： Jaboticaba Total Polyphenols anthocyanins Resveratrol Small Molecule Peptides

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Protective effect of BlingLife®-berry extract on blue lightinduced eye damage and its mechanism

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Asian Journal of Traditional Medicines 2024年第1期19卷 1-9页

作者： Jiaxiang Ding Chenfeng Shou Kexin Xie School of Public Foundation Bengbu Medical CollegeBengbu 233000China Department of Emergency Surgery the Second HospitalAnhui Medical UniversityHefei 230001China State Key Laboratory of Pharmaceutical Biotechnology School of life SciencesNanjing UniversityNanjing 210023China

This study aims to investigate the protective effects of BlingLife®-berry extract on the eyes.BlingLife®-berry extract is a mixture of high-quality natural berries,including blackcurrant,aromia,bilberry and maquiberry.The main active ingredient responsible for theeye-protective effects is anthocyanins.anthocyanins are natural water-soluble pigments belonging to the flavonoid class,and theyhave multiple benefits,including improving vision,anti-inflammatory and antibacterial properties,and antioxidant effects.Dueto the dual benefits of anthocyanins in protecting vision and eliminating free radicals,this study explores the comprehensive eye protective effects of BlingLife®-berry extract in terms of combating blue light-induced eye damage and oxidative stress-inducedvisual fatigue.The results provide robust evidence for the in vivo effects and further technological applications of BlingLife®-berry extract.

关键词： BlingLife®-berry extract combination anthocyanins antioxidant protecting vision eliminating radicals

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Mapping of Purple Gene in Spears of Asparagus(Asparagus officinalis L.)

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Agricultural Biotechnology 2024年第1期13卷 5-8页

作者： Tao LIU Wenlai REN Yuqin LIANG Yubo WANG Wei LIU Xing WANG Yanpo CAO School of Landscape and Ecological Engineering Hebei University of EngineeringHandan 056000China Wen-an County Agriculture and Rural Bureau Langfang 065800China Institute of Cash Crops Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050051China

[Objectives]This study was conducted to find out regulatory genes related to purple in spears of asparagus(Asparagus officinalis L.).[Methods]The stable asparagus inbred line JX1513-5(the base of the spear is purple)and JLV1718-7(the base of the spear is green)were used as parents to study the genetic law of purple/green traits in their offspring.[Results]The results showed that the purple in the basal part of asparagus spear was controlled by a pair of alleles,and purple was dominant over green.The F 2 segregation population was resequenced by the bulk segregation analysis(BSA)method,and the purple trait in the basal part of asparagus spear was located in the interval of 24.51-25.08 Mb on Chr07 chromosome,which included 47 genes.According to the annotation information,three candidate genes were screened out:LOC109849403,LOC109849430 and LOC109849442.The candidate genes were verified by real-time fluorescence quantitative PCR(qRT-PCR),and finally LOC109849442 was obtained as the candidate gene for controlling the purple/green trait in the basal part of asparagus spear.[Conclusions]This study lays a foundation for the breeding of new asparagus varieties and molecular marker-assisted breeding.

关键词： Asparagus anthocyanins Gene mapping Purple

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Eco-Friendly pH Indicator Based on Natural anthocyanins from Lycium ruthenicum

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Journal of Donghua University(English Edition) 2022年第2期39卷 110-114页

作者：张宏杰连雅思余佳燕卢润张洁邱夷平冯丽丽 College of Textiles and Apparel Quanzhou Normal UniversityQuanzhou 362000China Shishi Institute for Ecological&Smart Textile Quanzhou Normal UniversityQuanzhou 362000China College of Textiles Donghua UniversityShanghai 201620China

An eco-friendly and visual pH indicator was developed based on cotton fabrics dyed with natural Lycium ruthenicum extract(LRE),whose color changed from red to purple,blue and green at pH of 2-10.Three methods for dyeing cotton fabrics with LRE were attempted,namely pre-mordanting,simultaneous mordanting,and post-mordanting methods with different dyeing temperatures,dyeing times and dyebath pH values.The cotton fabrics exhibited the highest K/S value when they were dyed under a dyebath of pH 6 at 20℃for 90 min in the case of the simultaneous mordanting method.Meanwhile,the dyed cotton fabrics also showed reversible pH-dependent color changes.The developed flexible pH indicator based on renewable natural materials is suitable for multiple applications in environmental monitoring and smart textiles.

关键词： Lycium ruthenicum anthocyanins pH indicator environmental monitoring smart textiles

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Effects of Cerium on Accumulation of anthocyanins and Expression of Anthocyanin Biosynthetic Genes in Potato Cell Tissue Cultures

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Journal of Rare Earths 2006年第4期24卷 479-484页

作者：卢其能杨清邹华文 Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural University Nanjing 210095 ChinaDepartment of Agronomy Yichun University Yichun 336000 China Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural University Nanjing 210095 China

The effects of Ce （Ⅳ） on callus growth, anthocyanin content, and expression of anthocyanin biosynthetic genes in callus suspension cultures of Solanum tuberosum cv. Chieftain were studied by the measurement of fresh weight, spectrophotometric assays, and semiquantitative RT-PCR. The results indicate that 0.1 mmol·L^- 1 Ce （ Ⅳ ） can promote callus growth, increase the accumulation of anthocyanins, and enhance the expression of five anthocyanin biosynthetic genes （ CHS, F3H, F3＇5＇H, DFR, and 3 GT） most efficiently. At high concentrations of 1 mmol·L^- 1, Ce （Ⅳ） partially inhibits callus growth and at 2 mmol· L^-1 eventually lends to cell death. The results show that Ce（ Ⅳ ） can induce the expression of anthocyanin biosynthetic genes to produce and accumulate anthocyanins and increase the yield of anthocyanins.

关键词： anthocyanins cerium callus suspensive culture expression of genes Solanum tuberosum cv. Chieftain rare earths

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Delphinidin-3-O-sambubioside: a novel xanthine oxidase inhibitor identified from natural anthocyanins

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Food Quality and Safety 2021年第1期5卷 83-92页

作者：谢佳宏崔昊昕徐阳谢亮华陈卫 Department of Food Science and Nutrition Zhejiang Key Laboratory for Agro-Food ProcessingZhejiang UniversityHangzhouChina Ningbo Research Institute Zhejiang UniversityNingboChina

Objectives:This study was conducted to investigate the xanthine oxidase(XO)inhibitory activities of 18 monomeric anthocyanins from berry fruits and roselle,and to illustrate the underlying mechanism of the most active anthocyanin delphinidin-3-O-sambubioside.Materials and Methods:Eighteen monomeric anthocyanins were prepared and purified in our laboratory.The inhibitory properties of anthocyanins were investigated by in vitro inhibitory activity studies and fluorescence quenching studies;the inhibitory mechanism was explored through kinetic studies,fluorescence quenching studies,circular dichroism analysis and computational docking simulations.Results:XO inhibitory activities of anthocyanins were related to the structures of B rings and glycosides.Among all the tested anthocyanins,delphinidin-3-O-sambubioside showed the most potent inhibitory activity with an IC_(50) of 17.1μmol/L,which was comparable to the positive control allopurinol.Spectroscopic results revealed that delphinidin-3-O-sambubioside could spontaneously interact with XO and induce conformational changes.Computational docking study indicated that delphinidin-3-O-sambubioside could bind to XO with a proper orientation,stably formed π-π interactions and hydrogen bonds with key residues,thus preventing the substrate from entering the active pocket.Conclusions:In brief,our study identified delphinidin-3-O-sambubioside as a potent XO inhibitor from natural anthocyanins,which is potentially applicable for prevention and treatment of hyperuricemia.

关键词： anthocyanins xanthine oxidase delphinidin-3-0-sambubioside molecular docking inhibitory mechanism

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Effect of Modified Atmosphere Packaging (MAP) on the Stability of anthocyanins and Degradation of Phenolic Compounds during Postharvest Storage of Pomegranate Fruit

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Food and Nutrition Sciences 2022年第3期13卷 316-335页

作者： Elham Lashkari Advanced Academic Programs Johns Hopkins University Washington D.C. USA

Effects of storage temperature, packaging material, elevated CO2 and reduced O2 contents in the package headspace, and their interaction effects on the total content of anthocyanins and degradation of phenolic compounds during long storage of “Malase Torsh Saveh” pomegranate were studied. The study findings showed that only storage temperature and its duration had significant effects on the degradation of phenolic compounds. The content of anthocyanins was affected by the single effect of storage time and its 3-way interaction effect with the storage temperature and the fruit’s surrounding gas composition. Higher contents of both total anthocyanins and browning pigments were recorded at 2°C storage temperature. The Browning Index (BI) of the pomegranate extracts showed to change quadratically with the variations in the total anthocyanins content but linearly with the variations in the content of browning compounds. Thermal dipping treatment and its interaction with the storage time also had significant effect on the BI values of the extracts obtained from modified atmosphere packaged pomegranates stored at 6 °C.

关键词： Pomegranate anthocyanins Phenolic Compounds Postharvest Storage Packaging

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Thermal Degradation Kinetics of Three Kinds of Representative anthocyanins Obtained from Blood Orange

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Agricultural Sciences in China 2011年第4期10卷 642-649页

作者： LIU Liang CAO Shao-qian PAN Si-yi Department of Applied Biology Zhejiang Pharmaceutical College Ningbo 315100 P.R.China College of Biological and Environmental Sciences Zhejiang Wanli University Ningbo 315190 P..R. China College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 P.R.China

Cyanidin-3-glucoside, cyanidin-3-（6′′-malonyl）-glucoside, and cyanidin-3-glucoside-derived pyranoanthocyanins which were three major anthocyanins of blood orange, were obtained using a Toyopearl TSK HW-40S column chromatography. Then, thermal degradation kinetics of the three major anthocyanins was studied at selected temperatures （70, 80, and 90°C）. Degradation parameters such as k and t1/2 values were determined. The activation energy （Ea） values for cyanidin- 3-glucoside, cyanidin-3-（6′′-malonyl）-glucoside and cyanidin-3-glucoside-derived pyranoanthocyanin were 75.4, 79.5, and 81.7 kJ mol-1, respectively. Ea values suggested that cyanidin-3-glucoside-derived pyranoanthocyanin had the highest stability, followed by cyanidin-3-（6′′-malonyl）-glucoside and cyanidin-3-glucoside. However, t1/2 values indicated cyanidin- 3-glucoside-derived pyranoanthocyanin degraded faster than cyanidin-3-（6′′-malonyl）-glucoside and cyanidin-3-glucoside at selected temperature.

关键词： blood orange anthocyanins purification identification degradation kinetics

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