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Promoter and coding sequence diversity of CsCCD1 may contribute to the differential accumulation of floralβ-ionone in fresh tea leaves 被引量:3
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作者 Jingming Wang Mingyue Zhao +11 位作者 Ting Gao Yingying Feng Feiquan Wang Yuting Pan Jieyang Jin Tingting Jing Mengqian Lu Mengting Zhang Danyang Guo Xiaochun Wan Wilfried Schwab Chuankui Song 《Horticultural Plant Journal》 SCIE CAS CSCD 2023年第4期837-847,共11页
The carotenoid-derived volatileβ-ionone makes an important contribution to tea fragrance.Here,we qualitatively and quantitatively analysed 15 carotenoids in tea leaves of 13 cultivars by UHPLC-APCI-MS/MS.The 13 culti... The carotenoid-derived volatileβ-ionone makes an important contribution to tea fragrance.Here,we qualitatively and quantitatively analysed 15 carotenoids in tea leaves of 13 cultivars by UHPLC-APCI-MS/MS.The 13 cultivars were divided into two groups by PCA(Principal Component Analysis)clustering analysis of their carotenoid content,and OPLS-DA(Orthogonal projections to latent structures)indicated that the levels ofβ-carotene(VIP=2.89)and lutein(VIP=2.30)were responsible for much of the variation between the two groups.Interestingly,theβ-carotene toβ-ionone conversion rates in Group 1 were higher than in Group 2,while theβ-carotene content was significantly lower in Group 1 than in Group 2.Theβ-ionone content was significantly higher in Group 1.Pearson Correlation Coefficient calculation between the transcription level of candidate genes(CsCCD1 and CsCCD4)and the accumulation ofβ-ionone indicated that CsCCD1 may involve in the formation ofβ-ionone in 13 cultivars.Prokaryotic expression and in vitro enzyme activity assays showed that‘Chuanhuang 1’had an amino acid mutation in carotenoid cleavage dioxygenases 1(CsCCD1)compared with‘Shuchazao’,resulting in a significantly higherβ-ionone content in‘Chuanhuang 1’.Sequence analysis showed that‘Chuanhuang 1’and‘Huangdan’had different CsCCD1 promoter sequences,leading to significantly higher CsCCD1 expression andβ-ionone accumulation in‘Chuanhuang 1’.These results indicated that the promoter and coding sequence diversity of CsCCD1 might contribute to the differential accumulation ofβ-ionone in different tea cultivars. 展开更多
关键词 camellia sinensis(l.)Kuntze Carotenoid cleavage dioxygenase Β-CAROTENE Β-IONONE PROMOTER Differential accumulation
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恩施厚朴与茶树复合经营模式下生长状况与效益分析
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作者 向生寿 顿春垚 +1 位作者 李双龙 丁中彪 《中南农业科技》 2024年第3期254-256,共3页
通过研究厚朴(Houpoea officinalis)与茶树[Camellia sinensis(L.)O. Ktze.]套种的复合经营模式,分析厚朴在套种模式下生长状况及生长指标间的相互关系,对套种模式下茶树与厚朴产生的经济效益进行分析。结果表明,厚朴与茶树套种模式科... 通过研究厚朴(Houpoea officinalis)与茶树[Camellia sinensis(L.)O. Ktze.]套种的复合经营模式,分析厚朴在套种模式下生长状况及生长指标间的相互关系,对套种模式下茶树与厚朴产生的经济效益进行分析。结果表明,厚朴与茶树套种模式科学可行,套种厚朴可为普通茶园提供额外收入,对厚朴与茶树套种关键技术提出改良建议,以期为厚朴与茶树套种的林下经济模式提供参考。 展开更多
关键词 厚朴(Houpoea officinalis) 茶树[camellia sinensis(l.)O.Ktze.] 复合经营模式 效益分析 生长状况 恩施
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Genetic Diversity Analysis of Wild Tea Plants in Yunnan Province Using EST-SSR Markers 被引量:4
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作者 Meng ZHOU Youyong LI +5 位作者 Xuemei SUN Jiajin WANG Jin XIE Hao CHENG Yungang WANG Benying LIU 《Agricultural Biotechnology》 CAS 2015年第1期9-15,共7页
In this study, 27 pairs of EST-SSR primers were employed to analyze the genetic diversity and genetic relationship of 100 wild tea plant germplasm re- sources and 22 cultivars, according to the results, a total of 88 ... In this study, 27 pairs of EST-SSR primers were employed to analyze the genetic diversity and genetic relationship of 100 wild tea plant germplasm re- sources and 22 cultivars, according to the results, a total of 88 polymorphic bands were amplified with 27 pairs of primers; the variation of effective alleles accounted for 69.01% ; a total of 183 genotypes were detected, with a variation range of 4 -11 ; averagely 6.78 genotypes were amplified with each primer pair; Shannon index (I) of 27 primer pairs ranged from 0.32 to I. 35, with an average of 0.88 ; the observed heterozygosity (0.52) was basically consistent with the expected het- erozygosity (0.52) ; the average polymorphism heterozygosity was 0.48, which was very close to 0.50 ; the average Nei's index was 0.51, which was higher than 0. 50 ; the average polymorphism information content (PIC) was 0.52, which was higher than 0.50, indicating high genetic diversity among wild tea germplasm resources in Yuunan Province. According to the clustering results, based on geographical origins and genetic backgrounds, 122 materials were clustered into 14 categories. Dendrogram based on Nei's genetic distance revealed complex genetic relationships among wild tea germplasm resources in Yunnan Province. This study provided certain reference for subsequent preservation, development and research of wild tea germplasm resources in China. 展开更多
关键词 Tea plant[ camellia sinensis l.) O. Kuntze] EST-SSR Genetic diversity Genetic relationship
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Effect of increasing levels of nitrogen on yield of tea in different agro-ecological conditions of Pakistan
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作者 F.S. Hamid Tahira Ahmad 《Agricultural Science & Technology》 CAS 2006年第1期14-22,共9页
Field experiment was conducted on mature tea bushes of Qi-Men variety at two different altitudes from sea level i.e. at National Tea Research Institute Shinkiari (1000 m) and on farmer’s field in Konsh valley at vill... Field experiment was conducted on mature tea bushes of Qi-Men variety at two different altitudes from sea level i.e. at National Tea Research Institute Shinkiari (1000 m) and on farmer’s field in Konsh valley at village Battal (1500 m). Different levels of nitrogen with constant dose of phosphorus and potassium were applied to observe the optimal dose of nutrients for highest yield under local edaphic conditions. The experiment was repeated for three consecutive years. The highest yield of fresh tea leaves were obtained by the application of 420 kg ha-1 N followed by the application of 360 kg ha-1 N at 1000 masl. The highest dose of nitrogen also reduced significantly the soil pH in the upper (0-15cm) layer depth during 1998 and 1999. During the year 2000, the reduction in soil pH was observed by the application of highest dose of nitrogen but was non-significant at 5% level. The lower soil depth (15-30 cm) showed the reduction in pH with the highest dose of nitrogen during the experimental year but was statistically non significant. At the higher altitude of 1500 masl the highest yield of fresh tea leaves was obtained by the application of 420 kg ha-1 during the experimental years but the increase was significant during the year 1999 and 2000. The yield of the fresh tea leaves was positively correlated with the amount of nitrogen application at both the altitudes. The increasing amount of nitrogen decreased the soil pH at both the depths of 0-15cm and 15-30cm. Unlike the lower altitude (1000 m) there was no any significant reduction in the soil pH during 1998 and 1999. A significant reduction in soil pH was found in the year 2000. 展开更多
关键词 camellia sinensis. l YIElD AlTITUDES fertilizer effect soil pH Pakistan
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基于SSR标记的古茶树(Camellia sinensis)遗传关系分析 被引量:3
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作者 周长品 甘四明 +3 位作者 李发根 翁启杰 张照远 马锦林 《分子植物育种》 CAS CSCD 北大核心 2020年第13期4361-4367,共7页
本研究利用30个SSR标记,结合已有的128个茶树品种指纹,对福建省园岭林场的4株古茶树和1株铁观音进行了遗传关系分析。结果表明,30个SSR标记共产生了124个等位片段,每个标记的等位片段数1~9个;多态性信息量较高,平均为0.507。遗传聚类分... 本研究利用30个SSR标记,结合已有的128个茶树品种指纹,对福建省园岭林场的4株古茶树和1株铁观音进行了遗传关系分析。结果表明,30个SSR标记共产生了124个等位片段,每个标记的等位片段数1~9个;多态性信息量较高,平均为0.507。遗传聚类分析表明,铁观音品种‘Tieguanyin2’与Fujian组的‘Tieguanyin’、‘Jinmudan’、‘Mingke1’和‘Zimudan’等遗传距离较近,属于铁观音品种。4株古茶树(YL01,YL02,YL03和YL04)间遗传距离较近,属于Fujian组,推测为八仙茶古茶树品种。本研究的5株茶树与已知的128个茶树品种间没有直接的亲子关系。YL02、YL03和YL04聚类较近,不匹配位点数较少,可能来源于共同的亲本。DNA分子指纹检测表明,8对核心SSR标记可对所有参试茶树进行有效的鉴别,这为古茶树的品种鉴定和产权保护提供了有效的分子证据。 展开更多
关键词 茶树(camellia sinensis(l.)O.Kuntze) SSR标记 遗传关系
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低温胁迫下贵州云雾贡茶生长调节剂的变化 被引量:8
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作者 王莹 李岩 +2 位作者 王姝 向准 赵德刚 《湖北农业科学》 2020年第8期99-102,共4页
以贵州云雾贡茶[Camellia sinensis(L.)Kuntze var.niaowangensis Q.H.Chen]一年生幼苗茶树为试验材料,用酶联免疫法(ELISA)测定不同低温胁迫下茶树叶片生长调节剂含量的变化,以探讨低温胁迫下茶树生长调节剂变化规律。结果显示,1、4℃... 以贵州云雾贡茶[Camellia sinensis(L.)Kuntze var.niaowangensis Q.H.Chen]一年生幼苗茶树为试验材料,用酶联免疫法(ELISA)测定不同低温胁迫下茶树叶片生长调节剂含量的变化,以探讨低温胁迫下茶树生长调节剂变化规律。结果显示,1、4℃处理云雾贡茶IAA、GA含量大部分显著低于对照,ABA含量、ABA/GA明显高于对照;10℃处理ABA、IAA、GA含量大部分显著高于对照,ABA/GA与对照无明显变化。随胁迫时间延长,1、4℃处理ABA、IAA含量随时间变化呈先上升后下降的趋势,GA含量呈下降趋势,ABA/GA呈上升趋势;10℃处理ABA和GA含量呈先上升后下降的趋势,IAA含量呈下降趋势。低温条件下,云雾贡茶能提高ABA类生长抑制物质,降低IAA、GA等生长促进类物质,通过调节植物体内生长调节剂平衡来应对低温胁迫。 展开更多
关键词 云雾贡茶[camellia sinensis(l.)Kuntze var.niaowangensis Q.H.Chen] 低温胁迫 生长调节剂
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Sprinkler irrigation system for tea frost protection and the application effect 被引量:1
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作者 Hu Yongguang Zhao Chen +2 位作者 Liu Pengfei Asante Eric Amoah Li Pingping 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2016年第5期17-23,共7页
A sprinkler irrigation system was designed and applied for a tea field to achieve frost protection through latent heat release when water turning into ice.Frost protection effects during night were tested at different... A sprinkler irrigation system was designed and applied for a tea field to achieve frost protection through latent heat release when water turning into ice.Frost protection effects during night were tested at different irrigation application rates by monitoring air temperature around tea canopy(Tc).Temperature sensors were arranged at different distances from the sprinkler.The preliminary results showed that,when the sprinkler system worked continuously at the application rate of 2-4 mm/h before sunrise,tea canopy was covered with ice and Tc remained around 0℃,preventing tea plants from frost damage.But no more temperature rise was obviously observed at the application rates above 4 mm/h,which means less cost effectiveness.The system was stopped after sunrise when background air temperature rose back to 0℃and Tc increased by 2.2℃in one hour,while Tc of non-irrigated area increased by 4.8℃,which might cause thawing injuries to tea plants.The leaf surface temperature was lower than Tc,and the difference between the leaf surface temperature and Tc decreased with the increase of application rate.Therefore,the sprinkler irrigation system could achieve tea frost protection,and the recommended application rate was 2-4 mm/h for better protection effect.The system should keep running throughout frost night till half an hour after sunrise.The start and stop of the sprinkler irrigation system should be controlled based on Tc. 展开更多
关键词 sprinkler irrigation frost protection camellia sinensis l application rate temperature rise frost damage
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茶树‘湘妃翠’黄化枝光合生理与组织学 被引量:6
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作者 张晨禹 王铭涵 +5 位作者 高羲之 郭书凝 李娟 林海燕 刘青如 沈程文 《分子植物育种》 CAS CSCD 北大核心 2019年第23期7892-7900,共9页
黄化突变是茶树叶色变异中的一个重要分支,研究其光合生理特征及生理结构变化规律对于揭示黄化茶树对环境的响应机理具有重要意义。在湖南农业大学‘湘妃翠’茶树母本园中,发现一株茶树上生长出数枝黄化枝条。通过对黄化单株黄化叶(YPEL... 黄化突变是茶树叶色变异中的一个重要分支,研究其光合生理特征及生理结构变化规律对于揭示黄化茶树对环境的响应机理具有重要意义。在湖南农业大学‘湘妃翠’茶树母本园中,发现一株茶树上生长出数枝黄化枝条。通过对黄化单株黄化叶(YPEL)、黄化单株正常叶(YPNL)以及正常株正常叶(NPNL)的叶绿体色素含量、超微结构、叶绿素荧光参数及解剖结构进行研究。结果表明:YPEL叶绿素、类胡萝卜素含量极显著低于YPNL和NPNL;YPEL叶绿体面积与基粒片层有效堆叠明显少于NPNL,YPEL叶绿体中出现淀粉粒、嗜锇颗粒和囊状小泡异常增多现象;YPEL叶绿素荧光参数Fm、Fv/Fm、Fv/Fo、qP、qN值极显著低于YPNL和NPNL,而Fo、NPQ值则极显著高于YPNL和NPNL;黄化叶主脉厚度极显著小于NPNL(15.96%),栅栏组织厚度/海绵组织厚度显著高于NPNL(37.09%),YPEL茎髓细胞面积极显著小于NPNL(43.86%)。研究表明,‘湘妃翠’黄化单株叶色黄化的直接原因可能是因为叶绿体结构瓦解,导致叶绿素及类胡萝卜素的生物合成受阻;而叶绿体结构瓦解也严重影响了黄化叶的光合作用,导致黄化叶受到光抑制与光氧化。黄化枝通过改变叶与茎的生理结构比例,减少养分消耗并增强营养物质的储存能力,从而保证其正常发育与生长。 展开更多
关键词 茶树(camellia sinensis l.O.Kuntze) 黄化变异 叶绿素荧光 解剖结构
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茶树类防御素CsDEF2基因的克隆与序列及表达分析 被引量:1
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作者 胡梦芹 刘硕谦 +3 位作者 刘赛 刘丽萍 刘仲华 田娜 《分子植物育种》 CAS CSCD 北大核心 2020年第22期7267-7275,共9页
防御素(Defensin)是一类广泛存在动植物中的阳离子短肽,具有多种防御功能。本研究利用转录组数据库,从茶树叶片中克隆了一个类防御素基因CsDEF2并对该基因进行了生物信息学分析,CsDEF2的开放阅读框(ORF)全长246 bp,编码81个氨基酸,蛋白... 防御素(Defensin)是一类广泛存在动植物中的阳离子短肽,具有多种防御功能。本研究利用转录组数据库,从茶树叶片中克隆了一个类防御素基因CsDEF2并对该基因进行了生物信息学分析,CsDEF2的开放阅读框(ORF)全长246 bp,编码81个氨基酸,蛋白分子量8.68 kD,等电点9.12.序列比对和系统发育分析表明,CsDEF2是防御素家族中的新成员。此外,本研究对病原真菌(茶树镰刀菌)侵染后的茶树叶片中该基因的表达水平进行半定量分析。结果表明,茶树镰刀菌侵染的叶片CsDEF2基因的表达量相较未侵染叶片明显上调,说明CsDEF2基因可能在防御真菌侵染发挥作用。以上研究结果为提高茶树及其它作物的生物抗性提供了新的靶基因,同时也为探讨茶树生物抗性奠定了基础,具有重要的理论与应用价值。 展开更多
关键词 茶树(camellia sinensis l.) 类防御素 基因克隆 生物信息学分析 生物抗性
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基于RNA-seq技术的茶树新梢组培褐变分析 被引量:2
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作者 李解 唐敏 +2 位作者 翟秀明 杨娟 侯渝嘉 《分子植物育种》 CAS 北大核心 2022年第3期943-950,共8页
为研究褐变对于茶树组培转录水平的影响,以褐变前后的茶树组培新梢为研究材料,利用RNA-seq技术对样品进行转录组测序分析,筛选出1 753个差异表达基因,其中上调表达590个,下调表达1 163个。通过GO和KEGG数据库,对差异基因进行功能基因注... 为研究褐变对于茶树组培转录水平的影响,以褐变前后的茶树组培新梢为研究材料,利用RNA-seq技术对样品进行转录组测序分析,筛选出1 753个差异表达基因,其中上调表达590个,下调表达1 163个。通过GO和KEGG数据库,对差异基因进行功能基因注释和富集分析,发现差异基因主要富集在糖代谢、应激与防御反应、植物激素信号传导、胁迫响应等代谢通路,表明褐变对于茶树新梢生长发育相关的基础代谢造成了损伤,褐化逆境抑制了相关基因的正常表达;同时,茶树新梢在响应褐变后,激活了Glyco_ydro_1、p450、AP2等与胁迫相关的转录因子高表达。本研究表明,褐变导致茶树组培大量基因被诱导或抑制表达,与胁迫响应相关的部分转录因子显著上调表达,这为解决褐变危害并获得茶树组培成功提供帮助。 展开更多
关键词 茶树(camellia sinensis(l.)O.Ktze.) 褐变 RNA-SEQ 组培
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