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相关概念视频

Monohybrid Crosses01:20

Monohybrid Crosses

Overview
Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Transgenic Organisms00:53

Transgenic Organisms

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Combinatorial Gene Control02:33

Combinatorial Gene Control

Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
Transgenic Organisms00:53

Transgenic Organisms

Overview
Transgenic Plants02:50

Transgenic Plants

Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...

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Cell fate acquisition at a de novo developmental boundary in the maize leaf.

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相关实验视频

Updated: Jul 14, 2026

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis
14:43

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

Published on: July 23, 2014

通过玉米中分支无丝1基因控制状状系统的身份.

George Chuck1, Michael Muszynski, Elizabeth Kellogg

  • 1Plant Gene Expression Center, U.S. Department of Agriculture-Agricultural Research Service, 800 Buchanan Street, Albany, CA 94710, USA. gchuck@nature.berkeley.edu

Science (New York, N.Y.)
|November 9, 2002
PubMed
概括

玉米中分支无丝1 (bd1) 基因突变改变了尖的发育,导致分支形成,而不是必要的谷物载体结构. 这项研究确定了bd1作为调节草花朵结构的关键转录因子.

科学领域:

  • 植物生物学 植物生物学
  • 遗传学 是一个遗传学.
  • 农业科学 农业科学

背景情况:

  • 对于全球粮食供应至关重要的谷物谷物,从草花花朵结构的基本单元 - - 尖子中发展出来.
  • 玉米中分支无丝1 (bd1) 突变破坏了正常的尖细胞发育,导致不确定的分支的形成.

研究的目的:

  • 确定负责bd1突变的基因,并阐明它在玉米皮发育中的作用.
  • 了解控制草花朵结构的分子机制.

主要方法:

  • 在玉米中bd1突变的遗传分析.
  • 基因克隆和序列分析以确定bd1基因.
  • 在尖状髓系统中分析bd1的表达模式.

主要成果:

  • 该bd1突变改变了尖状元系统的身份,导致分支而不是尖状元形成.
  • bd1编码了一个假定的ERF转录因子,这种转录因子在不同草种中保持.
  • bd1表达在尖端髓系统内的特定域内,这表明通过横向信号通路进行调节.

结论:

  • 由bd1编码的ERF转录因子在确定玉米中尖端细胞的身份方面发挥着至关重要的作用.

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Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis
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Published on: July 23, 2014

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Lateral Root Inducible System in Arabidopsis and Maize

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Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer

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  • 信号通路源于尖端髓系统的侧面域,可能通过bd1.1.调节髓系统的身份.
  • 了解bd1功能为改善谷物作物的花朵结构和谷物产量提供了洞察力.