Lf2是一个结结的homeobox调节器,它调节大豆中的传单号码
Chancelor B Clark1,2, Denise Caldwell2,3, Qiang Zhu1,2
1Department of Agronomy, Purdue University, West Lafayette, Indiana, USA.
一种大豆突变 (lf2) 产生了七片叶子,揭示了两步发展过程. 这项研究确定KNOTTED1-LIKE HOMEOBOX 2基因删除是原因,为大豆结构改进提供了见解.
科学领域:
- 植物遗传学 植物遗传学
- 发育生物学是发展生物学.
- 农作物科学 农作物科学
背景情况:
- 叶子的复杂性影响光捕获和作物产量潜力.
- 大豆通常表现出三叶复合叶,但lf2突变导致七叶复合叶.
- 目前尚不清楚lf2突变的遗传和发育基础.
研究的目的:
- 描述大豆lf2突变的七片叶表型.
- 为了识别导致变更的传单号码的遗传突变.
- 评估Lf2位点对大豆改良和植物结构修改的潜力.
主要方法:
- 使用显微镜对lf2表型的形态和发育特征.
- 基因映射以界定lf2突变的基因组区域.
- 对比基因组分析和基因测序以确定候选突变.
- 基因表达分析和CRISPR-Cas9编辑以验证基因功能.
主要成果:
- 七片叶表型源于一个两步过程,包括最初的五片叶形成,然后是次要的叶片启动.
- 基因映射将lf2突变定位在11号染色体上.
- 在一个KNOTTED1-LIKE HOMEOBOX 2 (KNAT7) 基因中的2-bp删除被确定为致病突变.
- 补充和CRISPR-Cas9编辑证实了KNAT7基因在传单开发中的作用.
结论:
- lf2突变是由同类于Arabidopsis KNAT7的大豆基因中断引起的,影响了叶片的发育.
- 了解Lf2位点可以了解植物叶子发育的分子机制.
- 对Lf2位点的有针对性的修改为多样化大豆植物结构和潜在提高作物性能提供了一种战略.
更多相关视频
10:08Experimental Design for Laser Microdissection RNA-Seq: Lessons from an Analysis of Maize Leaf Development
Published on: March 5, 2017
08:31Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
Published on: December 2, 2016
相关概念视频
Cell Signaling in Plants
Cell Adhesion in Plants
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
Regulation of Transpiration by Stomata
Gene Regulation During Sporulation
Regulation of Expression at Multiple Steps
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
