Monoterpenes are typical aroma components of muscat grape cultivars,providing pleasant floral and fruity aromas to grapes and wines.However,the molecular mechanism of monoterpene biosynthesis between muscat and non-mu...Monoterpenes are typical aroma components of muscat grape cultivars,providing pleasant floral and fruity aromas to grapes and wines.However,the molecular mechanism of monoterpene biosynthesis between muscat and non-muscat grape remains unclear.Here,the muscat grape cultivar‘Jumeigui’and the non-muscat grape cultivar‘Kyoho’were chosen as plant materials for a comprehensive transcriptome and metabolite analysis.The gas chromatography-mass spectrometry(GC-MS)analysis demonstrated that a total of 27 and 23 monoterpene compounds were identified and quantified in the‘Jumeigui’and‘Kyoho’grape,respectively.‘Jumeigui’grape accumulated significantly higher concentrations of monoterpenes than‘Kyoho’grape.Furthermore,geraniol,linalool,geranic acid,and β-citronellol might be important odorants contributing to the floral character of the‘Jumeigui’grape due to the high levels odor activity values(OAVs).Transcriptome analysis demonstrated that the expression profiles of VvDXS,VvGGPPS.SSU1,Vv TPS-b/g showed a positive correlation with monoterpene accumulation in grapes.In addition,the expression patterns of the genes involved in jasmonic acid(JA)synthesis and signal were also positively correlated with monoterpene accumulation.All these results will help guide the functional verification of candidate genes related to monoterpene biosynthesis,as well as identify the master transcriptional and hormonal regulators of this pathway in grapes.展开更多
[Objectives] This study was conducted to analyze the differences in procyanidine content in grapes caused by different producing areas. [Methods]With Muscat Hamburg grape from different producing areas as an experimen...[Objectives] This study was conducted to analyze the differences in procyanidine content in grapes caused by different producing areas. [Methods]With Muscat Hamburg grape from different producing areas as an experimental material,procyanidine content was determined by n-butanol-hydrochloric acid colorimetry. [Results] The procyanidins contents in different parts of the same variety ranked as grape seed > grape skin > grape flesh. The procyanidins contents in grapes from different producing areas were in order of Changli County,Hebei Province > Dazeshan Town,Shandong Province > Hangu District,Tianjin City.[Conclusions]The procyanidins contents in Muscat Hamburg grapes from different producing areas differ to a certain degree.展开更多
To study the effects of different soil conditions on winter nutrient storage of Muscat Hamburg branches,this study compared the soil texture,bulk density,total salt content and soil K,Ca,Na,Mg and total Fe contents of...To study the effects of different soil conditions on winter nutrient storage of Muscat Hamburg branches,this study compared the soil texture,bulk density,total salt content and soil K,Ca,Na,Mg and total Fe contents of Muscat Hamburg vineyards in Ninghe District and Hangu District,Binhai New Area of Tianjin and analyzed the soluble sugar and soluble protein contents in one-year-old vine branches. The results showed that the soil p H was lower,and the soil K,Ca and total salt( 0. 445%) contents were higher in the vineyard of Ninghe District than those in the vineyard of Hangu District. There were no significant differences in the soil Mg,Fe and Na contents between the vineyards in the two regions. The soil of the vineyard in Ninghe District is medium loam,and that in Hangu District is heavy loam. In short,all the soil indicators of the vineyard in Ninghe District were better than those in Hangu District except the indicator of soil salt content. The soluble sugar and soluble protein contents of one-year-old vine branches differed significantly between the two regions.展开更多
This study presents the first documentation work on recent benthic foraminifers of Oman coasts, especially of the northern part of Sultanate at Sawadi and the southern part at Janoof Tidal Creek near Taqah-Salalah bea...This study presents the first documentation work on recent benthic foraminifers of Oman coasts, especially of the northern part of Sultanate at Sawadi and the southern part at Janoof Tidal Creek near Taqah-Salalah beach. Eleven samples were collected from both localities. Twenty-nine species of benthonic Foraminifera belonging to 20 genera are retrieved, identified and illustrated herein. The study areas show the interaction in land and sea. Lagoons with normal marine hypersaline inhabited with sea grass and Mangrove-swamps. Mainly calcareous porcellaneous and hyaline walled foraminifers are abundant. Environmentally, the Janoof Tidal Creek shows better condition than Sawadi Tidal Creek as reflected by the more diverse and high abundance of foraminiferal taxa at the former locality. Both water bodies are free of toxic-heavy elements as evidenced by the lack of any abnormal foraminiferal test.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.32002005)the National Natural Science Foundation of Shandong Province(Grant No.ZR2020QC149)+2 种基金the Breeding Plan of Shandong Provincial Qingchuang Research Team(2019)the science-technology benefiting people project of Qingdao(Grant No.21-1-4-ny-14-nsh)the Highlevel Scientific Research Foundation of Qingdao Agricultural University(Grant Nos.665/1118011,665/1119002)。
文摘Monoterpenes are typical aroma components of muscat grape cultivars,providing pleasant floral and fruity aromas to grapes and wines.However,the molecular mechanism of monoterpene biosynthesis between muscat and non-muscat grape remains unclear.Here,the muscat grape cultivar‘Jumeigui’and the non-muscat grape cultivar‘Kyoho’were chosen as plant materials for a comprehensive transcriptome and metabolite analysis.The gas chromatography-mass spectrometry(GC-MS)analysis demonstrated that a total of 27 and 23 monoterpene compounds were identified and quantified in the‘Jumeigui’and‘Kyoho’grape,respectively.‘Jumeigui’grape accumulated significantly higher concentrations of monoterpenes than‘Kyoho’grape.Furthermore,geraniol,linalool,geranic acid,and β-citronellol might be important odorants contributing to the floral character of the‘Jumeigui’grape due to the high levels odor activity values(OAVs).Transcriptome analysis demonstrated that the expression profiles of VvDXS,VvGGPPS.SSU1,Vv TPS-b/g showed a positive correlation with monoterpene accumulation in grapes.In addition,the expression patterns of the genes involved in jasmonic acid(JA)synthesis and signal were also positively correlated with monoterpene accumulation.All these results will help guide the functional verification of candidate genes related to monoterpene biosynthesis,as well as identify the master transcriptional and hormonal regulators of this pathway in grapes.
基金Supported by the Key Research and Development Foundation of Tianjin City(17YFXTZC00040)Agriculture Product Quality and Security Detection Foundation of Ministery of Agriculture(181821301092362005)Tianjin Science and Technology Program(17JCYBJC29800,16PTZSTG00020)
文摘[Objectives] This study was conducted to analyze the differences in procyanidine content in grapes caused by different producing areas. [Methods]With Muscat Hamburg grape from different producing areas as an experimental material,procyanidine content was determined by n-butanol-hydrochloric acid colorimetry. [Results] The procyanidins contents in different parts of the same variety ranked as grape seed > grape skin > grape flesh. The procyanidins contents in grapes from different producing areas were in order of Changli County,Hebei Province > Dazeshan Town,Shandong Province > Hangu District,Tianjin City.[Conclusions]The procyanidins contents in Muscat Hamburg grapes from different producing areas differ to a certain degree.
基金Supported by Major Agricultural Technology Extension Project of Tianjin City(2017CK0184)Tianjin Agricultural and Rural Affairs Committee(ITTHRS2018002)Special Commissioner Project of Tianjin Science and Technology Commission(17ZXBFNC0031)
文摘To study the effects of different soil conditions on winter nutrient storage of Muscat Hamburg branches,this study compared the soil texture,bulk density,total salt content and soil K,Ca,Na,Mg and total Fe contents of Muscat Hamburg vineyards in Ninghe District and Hangu District,Binhai New Area of Tianjin and analyzed the soluble sugar and soluble protein contents in one-year-old vine branches. The results showed that the soil p H was lower,and the soil K,Ca and total salt( 0. 445%) contents were higher in the vineyard of Ninghe District than those in the vineyard of Hangu District. There were no significant differences in the soil Mg,Fe and Na contents between the vineyards in the two regions. The soil of the vineyard in Ninghe District is medium loam,and that in Hangu District is heavy loam. In short,all the soil indicators of the vineyard in Ninghe District were better than those in Hangu District except the indicator of soil salt content. The soluble sugar and soluble protein contents of one-year-old vine branches differed significantly between the two regions.
文摘This study presents the first documentation work on recent benthic foraminifers of Oman coasts, especially of the northern part of Sultanate at Sawadi and the southern part at Janoof Tidal Creek near Taqah-Salalah beach. Eleven samples were collected from both localities. Twenty-nine species of benthonic Foraminifera belonging to 20 genera are retrieved, identified and illustrated herein. The study areas show the interaction in land and sea. Lagoons with normal marine hypersaline inhabited with sea grass and Mangrove-swamps. Mainly calcareous porcellaneous and hyaline walled foraminifers are abundant. Environmentally, the Janoof Tidal Creek shows better condition than Sawadi Tidal Creek as reflected by the more diverse and high abundance of foraminiferal taxa at the former locality. Both water bodies are free of toxic-heavy elements as evidenced by the lack of any abnormal foraminiferal test.
