检索结果-南通市图书馆

Evidence of the predominance of passive symplastic phloem loading and sugar transport with leaf ageing in Camellia oleifera

引用

Horticultural Plant Journal 2023年第4期9卷 811-825页

作者： Shiwen Yang Kehao Liang Yongjiang Sun Jinshun Zhang Yibo Cao Jing Zhou Aibin Wang Lingyun Zhang Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education The College of ForestryBeijing Forestry UniversityBeijing 100083China

Phloem loading and transport of sugar from leaves to sink tissues such as fruits are crucial for yield *** oleifera is an evergreen horticultural crop with high value;however,its low production limits the development of the *** *** this study,using a combination of ultrastructural observation,fluorescence loss in photobleaching(FLIP)and inhibitor treatment,we revealed that *** leaves mainly adopt a symplastic loading route from mesophyll cells to the surrounding vascular bundle cells in minor *** assays showed that sucrose is the main sugar transported and only a small amount of raffinose or stachyose was detected in petioles,supporting a passive symplastic loading route in *** *** to leaves grown this year(LT),the carbohydrate synthesis capacity in leaves grown last year(LL)was decreased while LL retained more soluble sugar,suggesting a decrease in transport capacity with leaf *** and tissue staining showed that a reduction in plasmodesmata density leads to a decline in the degree of cellular coupling and is responsible for the weakening transport capacity in older ***-seq revealed several differentially expressed genes(DEGs)including CoPDCB1-1,CoSUT1 and CoSWEET12,which are likely involved in the regulation of phloem loading and sugar *** expression correlation network is constructed between PD-callose binding protein genes,sugar transporter genes and senescence-associated ***,this study provides the evidence of the passive symplastic phloem loading pathway in *** leaves and constructs the correlation between sugar transport and leaf ageing.

关键词： Camellia oleifera Phloem loading Leaf sugar transport Yield formation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Physiological Mechanism of Postphloem sugar transport in Citrus Fruit

引用

Agricultural Sciences in China 2003年第8期2卷 912-918页

作者： CHENJun-wei1 ZHANGShang-long ZHANGLiang-cheng RuanYong-ling XIEMing TAOJun DepartmentofHorticulture ZhejiangUniversityHangzhou310029P.R.China InstituteofHorticulture ZhejiangAcademyofAgriculturalSciencesHangzhou310021P.R.China

The dynamics of translocation and partitioning of 14C-phothsynthates, the concentration of sucrose in fruit tissues and the effects of the membrane carrier- and ATPase-specific inhibitors on 14C-sucrose uptake by juice sacs of the satsuma mandarin(Citrus unshiu Marc. cv. Miyagawa wase)fruit were examined at the stage of fruit enlargement and fruit full ripe. Kinetic data of 14C-photosynthate translocation indicated that the rate of photosynthate transport into juice sacs decreased with fruit maturation and sugar accumulation. Along the photosynthate translocation path, i. e. from vascular bundles to segment epidermis then to juice sacs, a descending sugar gradient was observed. With fruit maturation and sugar accumulation in juice sacs, the 14C photosynthate gradient increased, whereas the static sucrose concentration gradient decreased with fruit maturation and sugar accumulation. The higher gradient of specific 14C radioactivity was considered to favor diffusion and sugar transport into juice sacs at the later stage of fruit development. The rate of uptake 14C-sucrose by juice sacs of satsuma mandarin fruit was markedly reduced by PCMBS, EB, DNP and NO3-treatment. The above results suggested the participation of a carrier-mediated, energy-dependent sugar active transport process in juice sacs of satsuma mandarin fruit.

关键词： Satsuma mandarin sugar transport sugar accumulation Gradient Carrier Active transport

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identification and Characterization of Tonoplast sugar transporter (TST) Gene Family in Cucumber

引用

Horticultural Plant Journal 2020年第3期6卷 145-157页

作者： Weifeng Huang Bin Hu Jialin Liu Yong Zhou Shiqiang Liu National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Crop Physiology Ecology and Genetic BreedingMinistry of EducationJiangxi Agricultural UniversityNanchang 330045China College of Bioscience and Bioengineering Jiangxi Agricultural UniversityNanchang 330045China

Tonoplast sugar transporters(TSTs)play essential roles in regulating plant growth,development,and response to various biotic and abiotic *** this study,a total of three TST genes were identified by a genome-wide analysis in *** analysis showed that TST proteins from cucumber and other plant species can be classified into five groups,and nearly all TST members in the same groups displayed similarmotif distributions,transmembrane(TM)domains,and gene *** of the three CsTST genes possess a number of development-,stress-,and hormone-related cis-elements in the promoter ***,qRT-PCR assays revealed that the CsTST1 was expressed in fruits,flowers,leaves,and other tissues,and its expression varied significantly under various abiotic stresses such as cold,salt,drought(PEG),and abscisic acid(ABA).Finally,functional analysis of CsTST1 in yeast revealed that it was able to complement the deficiency in galactose,mannose and sucrose *** results revealed that CsTST1 can act as a functional sugar transporter to play important roles in cucumber growth and response to abiotic stress probably through affecting carbohydrate distribution.

关键词： Cucumber Cucumis sativus L. TST Phylogenetic analysis Gene expression Abiotic stress sugar transport

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sucrose-responsive osmoregulation of plant cell size by a long non-coding RNA

引用

Molecular Plant 2024年第11期17卷 1719-1732页

作者： Jakub Hajný Tereza Trávnícková Martina pundová Michelle Roenspies R.M.Imtiaz Karim Rony Sebastian Sacharowski Michal Krzyszton David Zalabák Christian S.Hardtke Ales Pecinka Holger Puchta Szymon Swiezewski Jaimie M.van Norman Ondrej Novák Laboratory of Growth Regulators Czech Academy of SciencesInstitute of Experimental Botany and Palacky UniversitySlechtitelu 2777900 OlomoucCzech Republic Department of Biophysics Faculty of SciencePalacky UniversitySlechtitelu 2777900 OlomoucCzech Republic Joseph Gottlieb Kölreuter Institute for Plant Sciences(JKIP)–Molecular Biology Karlsruhe Institute of Technology76131 KarlsruheGermany Department of Molecular Celland Systems BiologyUniversity of CaliforniaRiversideCA 92521USA Laboratory of Seeds Molecular Biology Institute of Biochemistry and Biophysics Polish Academy of SciencesPawinskiego 5a02-106 WarsawPoland Department of Plant Molecular Biology University of Lausanne1015 LausanneSwitzerland Center of Plant Structural and Functional Genomics Institute of Experimental BotanyCzech Academy of SciencesSlechtitelu 3177900 OlomoucCzech Republic Department of Molecular Celland Developmental BiologyUniversity of CaliforniaLos AngelesLos AngelesCA 90095USA

In plants,sugars are the key source of energy and metabolic building *** systemic transport of sugars is essential for plant growth and *** evolved intricate molecular networks to effectively distribute *** dynamic distribution of these osmotically active compounds is a handy tool for regulating cell turgor pressure,an instructive force in developmental *** this study,we have investigated the molecular mechanism behind the dual role of the receptor-like kinase *** functionally characterized a long non-coding RNA,CARMA,as a negative regulator of *** CARMA specifically fine-tunes CANAR expression in the phloem,the route of sugar *** genetic,molecular,microscopy,and biophysical data suggest that the CARMA–CANAR module controls the shoot-to-root phloem transport of sugars,allows cells to flexibly adapt to the external osmolality by appropriate water uptake,and thus adjust the size of vascular cell types during organ growth and *** study identifies a nexus of plant vascular tissue formation with cell internal pressure monitoring,revealing a novel functional aspect of long non-coding RNAs in developmental biology.

关键词： lncRNA auxin turgor sugar transport cell size

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diverse Functional Roles of Monosaccharide transporters and their Homologs in Vascular Plants： A Physiological Perspective

引用

Molecular Plant 2011年第4期4卷 641-662页

作者： Thomas L. Slewinski Department of Plant Biology Cornell University 262 Plant Science Building Ithaca NY 14853 USA

Vascular plants contain two gene families that encode monosaccharide transporter proteins. The classical monosaccharide transporter（-like） gene superfamily is large and functionally diverse, while the recently identified SWEET transporter family is smaller and, thus far, only found to transport glucose. These transporters play essential roles at many levels, ranging from organelles to the whole plant. Many family members are essential for cellular homeostasis and reproductive success. Although most transporters do not directly participate in long-distance transport, their indirect roles greatly impact carbon allocation and transport flux to the heterotrophic tissues of the plant. Functional characterization of some members from both gene families has revealed their diverse roles in carbohydrate partitioning, phloem function, resource allocation, plant defense, and sugar signaling. This review highlights the broad impacts and implications of monosaccharide transport by describing some of the functional roles of the monosaccharide transporter（-like） superfamily and the SWEET transporter family.

关键词： Monosaccharide transporters sugar transport membrane transport hexoses sugar alcohols carbohydrate partitioning.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Medicago truncatula Sucrose transporter Family： Characterization and Implication of Key Members in Carbon Partitioning towards Arbuscular Mycorrhizal Fungi

引用

Molecular Plant 2012年第6期5卷 1346-1358页

作者： Joan Doidy Diederik van Tuinen Olivier Lamotte Marion Corneillat Gerard Alcaraz Daniel Wipf UMR INRA 1347 Agrosup Universite de Bourgogne Agro~cologie P61e Interactions Plantes Microorganismes ERL CNRS 6300 BP 86510 21065 DijonCedex France

We identified de novo sucrose transporter （SUT） genes involved in long-distance transport of sucrose from photosynthetic source leaves towards sink organs in the model leguminous species Medicago truncatula. The iden- tification and functional analysis of sugar transporters provide key information on mechanisms that underlie carbon partitioning in plant-microorganism interactions. In that way, full-length sequences of the M. truncatula SUT （MtSUT） family were retrieved and biochemical characterization of MtSUT members was performed by heterologous expression in yeast. The MtSUT family now comprises six genes which distribute among Dicotyledonous clades. MtSUTI-1 and MtSUT4-1 are key members in regard to their expression profiles in source leaves and sink roots and were characterized as functional H~/sucrose transporters. Physiological and molecular responses to phosphorus supply and inoculation by the arbuscular mycorrhizal fungus （AMF） Glomus intraradices was studied by gene expression and sugar quantification analyses. Sucrose represents the main sugar transport form in M. truncatula and the expression profiles of MtSUTI-1, MtSUT2, and MtSUT4-1 highlight a fine-tuning regulation for beneficial sugar fluxes towards the fungal symbiont. Taken together, these results suggest distinct functions for proteins from the SUT1, SUT2, and SUT4 clades in plant and in bio- trophic interactions.

关键词： sugar transport sucrose transporter SUT sugar partitioning Medicago truncatula Glomus intraradices.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：