Molecular and Biochemical Evidence for Phenylpropanoid Synthesis and Presence of Wall-linked Phenoli

来源 :Journal of Integrative Plant Biology | 被引量 : 0次 | 上传用户:kevinchen12344
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The mature cotton (Gossypium hirsutum L.) fiber is a single cell with a typically thickened secondary cell wall. The aim of this research was to use molecular, spectroscopic and chemical techniques to investigate the possible occurrence of previously overlooked accumulation of phenolics during secondary cell wall formation in cotton fibers. Relative quantitative reverse transcription-polymerase chain reaction analysis showed that GhCAD6 and GhCAD1 were predominantly expressed among seven gene homologs, only GhCAD6 was up-regulated during secondary wall formation in cotton fibers. Phylogenic analysis revealed that GhCAD6 belonged to Class I and was proposed to have a major role in monolignol biosynthesis, and GhCAD1 belonged to Class Ⅲ and was proposed to have a compensatory mechanism for monolignol biosynthesis. Amino acid sequence comparison showed that the cofactor binding sites of GhCADs were highly conserved with high similarity and identity to bona fide cinnamyl alcohol dehydrogenases. The substrate binding site of GhCAD1 is different from GhCAD6. This difference was confirmed by the different catalytic activities observed with the enzymes. Cell wall auto-fluorescence, Fourier transform infrared spectroscopy (FTIR), high-performance liquid chromatography (HPLC) and chemical analyses confirmed that phenolic compounds were bound to the cell walls of mature cotton fibers. Our findings may suggest a potential for genetic manipulation of cotton fiber properties, which are of central importance to agricultural, cotton processing and textile industries. The aim of this research was to use molecular, spectroscopic and chemical techniques to investigate the possible occurrence of previously overlooked accumulation of phenolics during secondary cell wall formation in cotton fibers. Relative quantitative reverse transcription-polymerase chain reaction analysis showed that GhCAD6 and GhCAD1 were predominantly expressed among seven gene homologs, only GhCAD6 was up-regulated during secondary wall formation in cotton fibers. Phylogenic analysis revealed that GhCAD6 belonged to Class I and was proposed to have a major role in monolignol biosynthesis, and GhCAD1 belonged to Class III and was proposed to have a compensatory mechanism for monolignol biosynthesis. Amino acid sequence comparison showed that the cofactor binding sites of GhCADs were highly conserved with high similarity and identity to bona fide cinnamyl alcohol dehydrog This assay was previously published in French. Consultant site for GhCAD1 is different from GhCAD6. This difference was confirmed by the different catalytic activities observed with the enzymes. Cell wall auto-fluorescence, Fourier transform infrared spectroscopy (FTIR), high-performance liquid chromatography (HPLC) and chemical analyzes: that phenolic compounds were bound to the cell walls of mature cotton fibers. Our findings may suggest a potential for genetic manipulation of cotton fiber properties, which are of central importance to agricultural, cotton processing and textile industries.
其他文献
近年来,竞争优势已日益成为企业立足市场、求得生存和发展的根本。面对复杂多变的外部环境,企业如何才能获取并维持竞争优势,实现可持续发展,成为摆在众多企业面前的一项重大而又
中国民族音乐有着悠久的历史.在漫长的发展过程中,民族管乐器作为民族音乐的重要组成部分,与其他姊妹乐器一起构成了五彩纷呈的民族乐器大家庭.它的传承、衍变对整个中国音乐
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
笔者于2009年底参加了“非遗”保护工程的普查收尾工作,感受颇深,尤其是有感于人的意识在“非遗”保护过程中的重要作用,并深刻地认识到,只有有了先进的意识,才能使“非遗”
《牡丹亭》故事的源头,谢传梅先生认为:“宋时洪迈《夷坚志》所记本仅仅是一个故事的雏形,明初话本《杜丽娘慕色还魂》把故事扩展了,而至汤显祖《牡丹亭》戏剧则得到进一步充
课堂质量关乎着职业教育的改革和发展,《基础护理学》作为护理专业的核心课程,其课堂质量尤为重要,现笔者以江苏省某中医药高职校护理专业为例,从重视学生的体验、应用多种教
2004年,台湾文化建设委员会出版,将吴漪曼的传记--收录其中.该书出版至今,获得很大的回响;身为作者,我与有荣焉.吴老师在台湾音乐界桃李满天下,而她的影响力却是超越音乐的范
程午加(以下简称程)是我国20世纪颇具影响力的国乐大家,他在民族器乐诸多领域皆有建树,尤其在琵琶的改革、演奏、教学、创作等方面做出了不可否定和忽视的卓越贡献。程在民族
竞争是市场经济的特征之一。随着世界经济一体化进程的加快和市场竞争的日趋激烈,我国的企业界逐步认识到研究与开发(R&D)活动正是形成和提高企业核心竞争力的基础和关键。鉴
上个世纪有关郑声问题的研究有一个共同的倾向:就是所有的研究者几乎都注意到了郑声的历史环境、社会背景对郑声自身发展的重要作用,但真正能够从历史环境、社会背景等方面对