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Genome-Wide Characterization of the Cellulose Synthase Gene Superfamily in tea Plants(Camellia sinensis)

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Phyton-International Journal of Experimental Botany 2022年第10期91卷 2163-2189页

作者： Qianqian Li Qi Zhao Xinzhuan Yao Baohui Zhang Litang Lu College of tea Science Guizhou UniversityGuiyang550025China Institute of Agro-Bioengineering College of Life SciencesThe Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education)Guizhou UniversityGuiyang550025China

The cellulose synthase gene superfamily,including Cellulose synthase A(CesA)and cellulose synthase-like(Csl)gene families,is responsible for the synthesis of cellulose and hemicellulose,*** CesA/Csl genes are vital for abiotic stress resistance and shoot tenderness regulation of tea plants(Camellia sinensis).However,the CesA/Csl gene family has not been extensively studied in tea ***,we identified 53 CsCesA/Csl genes in tea *** genes were grouped into five subfamilies(CsCesA,CsCslB,CsCslD,CsCslE,CsCslG)based on the phylogenetic relationships with Arabidopsis and *** analysis of chromosome distribution,gene structure,protein domain and motif revealed that most genes in CsCesA,CsCslD and CsCslE subfamilies were conserved,whereas CsCslB and CsCslG subfamily members are highly *** transcriptome analysis showed that most CsCesA/Csl genes displayed tissue-specific expression *** addition,members of CsCslB4,CsCesA1/3/6,CsCslB3/4,CsCslD3,CsCslE1 and CsCslG2/3 subfamilies were up-regulated under drought and cold stresses,indicating their potential roles in regulating stress tolerance in tea ***,the expression levels of CsCslG2_6 and CsCslD3_5 in different tissues and cultivars,respectively,were positively correlated with the cellulose content that is negatively related with shoot ***,these two genes were speculated to be involved in the regulation of shoot tenderness in tea *** findings may help elucidate the evolutionary relationships and expression patterns of the CsCesA/Csl genes in tea plants,and provide more candidate genes responsible for stress tolerance and tenderness regulation in tea plants for future functional research.

关键词： tea plant(Camellia sinensis) cellulose synthase superfamily phylogeny stress resistance shoot tenderness regulation

Diversity Analysis of Chlorophyll, Flavonoid, Anthocyanin, and Nitrogen Balance Index of tea Based on Dualex

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1549-1558页

作者： Yifu Liu Jiazhen Wang Yao Xiao Xiongwen Shi Yixia Zeng College of Biology and Agriculture Science and Technology Zunyi Normal UniversityZunyi563000China tea research Institute Zunyi Normal UniversityZunyi563000China

The chemical compositions of tea(Camellia sinensis)are affected by numerous factors,such as cultivar,climate,leaf position,and cultivation ***,under the same conditions,the chemical compositions are mainly determined by ***,we investigated the genetic diversity of chemical compositions of tea tree resources in China to screen excellent germplasm *** chemical compositions index(including chlorophyll index,flavonoid index,and anthocyanin index)and the nitrogen balance index of tea leaves were measured in 102 tea germplasms planted in Chinese tea Plants Improved Variety Germplasm Resources Nursery(CTPIVGRN)by Dualex on April *** showed that the chlorophyll,flavonoid,and anthocyanin contents and the nitrogen balance index significantly differed between the 102 tea *** genetic diversity index values were 2.005,2.246,1.599,and 1.838,and the average genetic diversity was *** 102 tea germplasms can be divided into four categories by cluster analysis under the genetic distance threshold of *** results suggest that the genetic diversity of tea germplasm resources in China is *** study’s results can serve as a basis for the diversified development and utilization of tea plant.

关键词： tea nitrogen balance index diversity chlorophyll anthocyanin flavonoid

Chemical components in yellow mealworm(Tenebrio molitor L.)reared with tea powder

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Journal of Future Foods 2022年第3期2卷 266-269页

作者： Yanxia Wang Hongya Li Yu Lu Wenyi He Chen Wang Litang Lü Institute of Entomology Guizhou UniversityGuiyang 550025China College of tea Science Guizhou UniversityGuiyang 550025China Guizhou Minzu University Guiyang 550025China

The yellow mealworms(Tenebrio molitor L.)were reared by different ratios of tea powder and wheat bran powder mixtures,and weighted every day during the whole 10 days *** content of tea polyphenols,total catechins,catechin(C),epicatechins(EC),epigallocatechins(EGC),epicatechin gallates(ECG),epigallocatechin gallates(EGCG),and nutrition components such as protein and fatty acid in the yellow mealworms were determined after 10 days *** yellow mealworms can put on weight and grow well when the proportion of tea powder belows 80%,while 100%tea powder rearing has no signifi cantly reduced the weight of yellow *** content of tea polyphenols,total catechins,C,EC,EGC,ECG,and EGCG all enhance signifi cantly along with the increase ratio of the tea *** protein content increase more signifi cantly at 50%and 80%ratios treatments than the other *** powder added rearing reduces the content of saturated fatty acid,and has a complex effect on the content of unsaturated fatty *** analysis of the components determined show that 50%ratio is the best for yellow mealworm rearing.

关键词： Yellow mealworm tea Protein Fatty acid

Determination of carbendazim in tea using surface enhanced Raman spectroscopy

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Chinese Chemical Letters 2015年第12期26卷 1455-1459页

作者： Chun-Hua Ma Jing Zhang Yong-Cong Hong Yi-Ru Wang Xi Chen College of tea and Food Science/Collaborative Innovation Center of Chinese Oolong tea Industry Wuyi University Department of Chemistry and The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation College of Chemistry and Chemical EngineeringXiamen University

Surface-enhanced Raman scattering（SERS） is applied to detect the concentration of carbendzim（CBZ） in tea leaves. Au colloid is selected and used for active surfaces, and the extraction conditions are optimized in the experiment. The linearity range for the SERS intensity and the concentration of CBZ is found to be0.5 to 8 mg kgà1. The detection limit for CBZ is 0.1 mg kgà1and its recovery in tea samples is 72.3%. The detection results for CBZ using this method are compared with those of HPLC, and no obvious difference can be found. In addition, by dripping the condensed Au colloid on the tea leaves, the proposed SERS approach could be used to the in-situ determination of the half life period of CBZ on tea leaves.

关键词： SERS colloid linearity pesticide condensed filtered preparations listed attributed consuming

Dietary Green tea Extract and Antioxidants Improve Insulin Secretory Functions of Pancreatic β-Cells in Mild and Severe Experimental Rodent Model of Chronic Pancreatitis

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 53-72页

作者： Galande Sheethal Ranjeet K. Tokala Pavan Pondugala Krishna Vemula Vijayalakshmi Venkatesan Pothani Suresh Surya Satyanarayana Singh Guduru Venkat Rao Duvvur Nageshwar Reddy Mitnala Sasikala Basic Science and Translational research Division Asian Healthcare Foundation AIG Hospitals Hyderabad India Division of Cell and Molecular Biology National institute of Nutrition Hyderabad India National Animal Resource Facility for Biomedical research Hyderabad India Department of Biochemistry Osmania University Hyderabad India Department of Surgical Gastroenterology Asian Institute of Gastroenterology Hyderabad India Department of Gastroenterology Asian Institute of Gastroenterology Hyderabad India

Chronic pancreatitis (CP) is a progressive inflammatory disorder of the pancreas. It is predominantly idiopathic (with an unknown cause) in India and mostly due to alcohol in the West. Diabetes that occur secondary to chronic pancreatitis (T3c Diabetes) is often brittle, and is difficult to attain normoglycemia with conventional treatment requiring multiple doses of insulin. Mild and severe model of CP was induced in mice by repeated intraperitoneal injections of cerulein and L-arginine respectively with an intent to study islet dysfunction and develop therapeutic strategy in animal models of CP. Dietary intervention of epigallocatechin-3-gallate (EGCG) was tested in both the models of CP for its beneficial effects on insulin secretory functions. Pancreata collected upon euthanasia were used to study alterations in the morphology of pancreatic parenchyma and inflammation by staining with H&E and fibrotic changes by Masson’s trichrome and picrosirius staining. Insulin secretory functions of islets were evaluated to test the efficacy of the dietary intervention on β-cell functions. Intraperitoneal glucose tolerance test was performed to monitor the glucose homeostasis before and after the dietary intervention. Both the models resulted in CP with dispersed acini, inflammation and fibrosis. The loss of acini and extent of fibrosis was more in L-arginine model. 2-fold improvement in glucose-stimulated insulin secretory functions of islets was observed with 0.5% EGCG dietary intervention in cerulein model of CP and 1.6-fold in L-arginine model of CP. A further improvement in insulin secretion by 3.2-fold was observed with additional dietary supplements like N-acetyl cysteine, curcumin in combination with EGCG. Our results thus demonstrate and highlight the therapeutic potential of dietary green tea (EGCG) supplementation in reversing islet dysfunction and improving glucose homeostasis in experimental chronic pancreatitis in mice.

关键词： Dietary Intervention C57BL6/J Mice Epigallocatechin-3-Gallate N-Acetyl Cysteine Curcumin Chronic Pancreatitis Islets Glucose Stimulated Insulin Secretion

Population Structure Analysis and Genome-Wide Association Study of tea(Camellia sinensis(L.)Kuntze)Germplasm in Qiannan,China,Based on SLAF-Seq Technology

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Phyton-International Journal of Experimental Botany 2022年第4期91卷 791-809页

作者： Fen Zhang Weili Tian Lu Cen Litang Lv Xiaofang Zeng Yulu Chen Yichen Zhao Yan Li The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) Institute of Agro-Bioengineering and College of Life SciencesGuizhou UniversityGuiyang550025China College of tea Sciences Guizhou UniversityGuiyang550025China

Duyun Maojian tea is a famous tea in *** this study,the specific-locus amplified fragment(SLAF)sequencing method was used to analyze the population structure and conduct a genome-wide association study(GWAS)of 2 leaf traits of 123 tea plants in Qiannan,China.A total of 462,019 SLAF tags and 11,362,041 single-nucleotide polymorphism(SNP)loci were *** results of phylogenetic tree analysis,cluster analysis,and principal component analysis showed that 123 tea germplasms were clustered into three groups,and the heterozygosity rates for Groups I,II,and II were 0.206,0.224,and 0.34,***,tea germplasms in a production area are clustered in a group,indicating that tea germplasms in different production areas have certain genetic *** traditional Duyun Maojian tea core production areas,TS and DC-SJ,are clustered into Group I and Group II respectively,while the ZY production area is relatively independent in Group ***,based on GWAS analysis,11 candidate genes related to leaf apex and 7 candidate genes related to leaf shape were *** study clarified the genetic relationship among eight Duyun Maojian tea production areas and obtained candidate genes related to leaf apex and leaf shape *** results showed that population structure and candidate genes are an effective basis for the breeding of Duyun Maojian tea germplasm.

关键词： Duyun maojian tea plant SLAF-seq SNP genetic structure leaf character GWAS

Characterization of mulberry leaf instant tea and evaluation of its hypolipidemia effect via regulation of intestinal microbiota

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Food Science and Human Wellness 2024年第3期13卷 1348-1357页

作者： Xiaoyun Han Yunlong Bai Xiaoxin Feng Baochang Du Baojiang Zheng Qingshen Sun Engineering research Center of Agricultural Microbiology Technology Ministry of Education&Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold RegionKey Laboratory of Molecular Biology&Key Laboratory of MicrobiologyCollege of Heilongjiang Province&School of Life SciencesHeilongjiang UniversityHarbin 150080China Gannan Forest Farm Qiqihaer 162100China College of Life Sciences Northeast Forestry UniversityHarbin 150040China

The purpose of this study was to characterize mulberry leaf instant tea(MLIT)powder prepared from the'Longsang No.1'(Morus abla *** 1)mulberry leaves in Heilongjiang Province(China)and assess its obesity-preventing/relieving effects.A total of 174 compounds including quercetin,chlorogenic acid,1-deoxyecomycin(1-DNJ)related to antihyperlipidemia effects were identified from the MLIT *** treatment reversed the Lee's index,fat coefficient,and serum biochemical parameters in both the obesity relieving and obesity preventing mice fed with high-fat *** the obesity relieving experiment,the relative abundance of Desulfovibrio in mouse feces decreased after both 0.5%and 1%MLIT *** obesity preventing experiments,mouse with different amount of MLIT treatments showed increased relative abundance of Akkermansia,Bifidobacterium and Lactobacillus,while Deferribacteres,Desulfobacterota *** beneficial bacteria in the intestinal tract of mice treated with MLIT *** study proved that MLIT had antihyperlipidemia potential via modulating intestinal microbiota in mice.

关键词： Mulberry leaf instant tea Liquid chromatography-mass spectrometry(LC-MS) Antihyperlipidemia Intestinal microbiota

Study on the Retention Rate of Green tea Catechins Components and tea Polyphenol by Different Processing Technology

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茶叶 2013年第4期39卷 356-361页

作者： Hong-Chun Cui Jian-Yong Zhang Ji-Zhong Yu Xu-Xia Zheng Cun Ao Yu-Xiao Mao tea research Institute of Hangzhou Academy of Agricultural Science tea research Institute Chinese Academy of Agricultural Sciences

The aim of this research was to explore the effect of fixation,rolling,and drying processing technology on the retention rate of green tea catechins components and tea *** fixation processes(rotary drumfiring,microwave,steam-blasting),rolling process(weight of rolling,gently press rolling and traditional rolling),drying process(stove drying,roasting dehydration,baked fried drying) were *** effect of different tea processing technology on the retention rate of catechins component and tea polyphenol was *** showed that the microwave fixation process,gently press rolling process,baked fried dry process were beneficial to keep high levels of EGCG,C,EGC,EC,ECG.

关键词：茶儿茶素加工工艺茶多酚保留率组分干燥处理固定方法蒸汽爆破

Studies on Aftertaste of tea

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茶叶 2013年第4期39卷 486-490页

作者： Deng L Xiang LP Liang YR Zhejiang University tea research Institute Guizhou tea and tea Products Quality Supervision and Inspection Center

Aftertaste is a taste perceiption after a food or beverage is either swallowed or spat *** primary taste processing area located in the insula was considered to be involved in aftertaste *** changes in chemical compositions lead to the changes in aftertaste of *** fermentation,in which tea catechins are transformed into thearubigins,lead to a strong,distinctive flavor but a plain *** has a sweet taste,with little or no *** bitter aftertaste of transglucosylated steviosides was reduced when they were converted through transglucosylation of stevioside by α-*** of aftertaste include quality,intensity,and *** that have lingering aftertastes typically have long sensation durations.A surface plasmon resonance(SPR) system immobilized β-cyclodextrin indicated larger responses for the gallate-type catechins in comparison to the non-gallate-type *** β-cyclodextrin/SPR system can sense the bitterastringent taste intensity of the green *** SPR system detected the stability of the complex between the gallatetype catechins and β-cyclodextrin,which can be interpreted as the aftertaste produced in humans by the gallatetype catechins.

关键词：茶叶发酵酯型儿茶素表面等离子体共振没食子酸儿茶素类持续时间 β-环糊精 α-环糊精