检索结果-南通市图书馆

Filling the Gaps to Solve the Extensin Puzzle

molecular Plant 2018年第5期11卷 645-658页

作者： Eliana Marzol Cecilia Borassi Mauro Bringas Ana Sede Diana Rosa Rodriguez Garcia Luciana Capece Jose M. Estevez Fundacion instituto Leloir and instituto de investigaciones Bioquimicas de Buenos Aires (IIBBA-CO.NICEr) Avenida Patricias Argentinas 435 Buenos AiresCP C1405BWE Argentina departamento de Quimica Inorganica Analitica y Quimica Fisica Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires (INQUIMAE-CONICET)Buenos Aires CP C1428EGA Argentina Instituto de Investigaciones en Ingenierfa Genetica y Biologia Molecular Dr. Hector Torres (INGEBI-CONICET) Vuelta de Obligado 2490 Buenos Aires C1428ADNArgentina

Extensins （EXTs） are highly repetitive plant O-glycoproteins that require several post-translational modifi- cations （PTMs） to become functional in plant cell walls. First, they are hydroxylated on contiguous proline residues; then they are O-glycosylated on hydroxyproline and serine. After secretion into the apoplast, O-glycosylated EXTs form a tridimensional network organized by inter- and intra-Tyr linkages. Recent studies have made significant progress in the identification of the enzymatic machinery required to process EXTs, which includes prolyl 4-hydroxylases, glycosyltransferases, papain-type cysteine endopeptidases, and peroxidases. EXTs are abundant in plant tissues and are particularly important in rapidly expanding root hairs and pollen tubes, which grow in a polar manner. Small changes in EXT PTMs affect fastgrowing cells, although the molecular mechanisms underlying this regulation are unknown. In this review, we highlight recent advances in our understanding of EXT modifications throughout the secretory pathway, EXT assembly in cell walls, and possible sensing mechanisms involving the Catharanthus roseus cell surface sensor receptor-like kinases located at the interface between the apoplast and the cytoplasmic side of the plasma membrane.

关键词： Arabidopsis thaliana cysteine endopeptidases extensins glycosyltransferases peroxidases prolyl 4-hydroxylases

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

Genome-wide QTL analysis of tomato fruit cuticle deposition and composition

引用

Horticulture Research 2021年第1期8卷 1443-1457页

作者： Rida Barraj Barraj Patricia Segado Rocio Moreno-Gonzalez Antonio Heredia Rafael Fernandez-Munoz Eva Dominguez instituto de Hortofruticultura Subtropical y Mediterranea La Mayora Universidad de Malaga-Consejo Superior de Investigaciones CientificasDepartamento de Mejora Genetica y BiotecnologiaEstacion Experimental La MayoraAlgarrobo-CostaE-29750 MalagaSpain instituto de Hortofruticultura Subtropical y Mediterranea La Mayora Universidad de Malaga0Consejo Superior de Investigaciones CientificasDepartamento de Biologia Molecular y BioquimicaUniversidad de MalagaE-29071 MalagaSpain departament de Bioquimica i Fisiologia and Institut de Recerca en Nutricioi Seguretat Alimentaria(INSA-UB) Universitat de Barcelona(UB)E-08028 BarcelonaSpain

Genetics of traits related to fruit cuticle deposition and composition was studied in two red-fruited tomato species.Two mapping populations derived from the cross between the cultivated tomato(Solanum lycopersicum L.)and its closest relative wild species Solanum pimpinellifolium L.were employed to conduct a QTL analysis.A combination of fruit cuticle deposition,components and anatomical traits were investigated and the individual effect of each QTL evaluated.A total of 70 QTLs were identified,indicating that all the cuticle traits analyzed have a complex polygenic nature.A combination of additive and epistatic interactions was observed for all the traits,with positive contribution of both parental lines to most of them.Colocalization of QTLs for various traits uncovered novel genomic regions producing extensive changes in the cuticle.Cuticle density emerges as an important trait since it can modulate cuticle thickness and invagination thus providing a strategy for sustaining mechanical strength without compromising palatability.Two genomic regions,located in chromosomes 1 and 12,are responsible for the negative interaction between cuticle waxes and phenolics identified in tomato fruit.Several candidate genes,including transcription factors and structural genes,are postulated and their expression analyzed throughout development.

关键词： cultivated traits additive

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

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

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：