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相关概念视频

Abnormal Proliferation02:23

Abnormal Proliferation

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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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MdSCL13 coordinates with MdTCP2 to positively regulate cold tolerance by mediating ROS scavenging and JA biosynthesis.

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Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
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MdDREB2A通过抑制MdPR基因表达来负面调节果对Alternaria alternata的抵抗力.

Chana Bao1,2, Gege Qin2, Chen Liu2

  • 1Northwest A&F University ShenZhen Research Institute, Shenzhen, Guangdong, China.

Plant, cell & environment
|November 28, 2025
PubMed
概括

一个关键的转录因子MdDREB2A通过抑制与病变发生相关的 (PR) 基因来抑制果对叶子斑病的免疫力. 了解这种相互作用为开发抗病果品种提供了新的策略.

关键词:
A. 替代性的交换机在MdDREB2A中.在MdPR10中使用.果果 果果是什么意思疾病耐药性 疾病耐药性

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An Easy and Flexible Inoculation Method for Accurately Assessing Powdery Mildew-Infection Phenotypes of Arabidopsis and Other Plants
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Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis
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科学领域:

  • 植物病理学 植物病理学
  • 分子生物学分子生物学
  • 植物与微生物的相互作用

背景情况:

  • 叶子斑病,由Alternaria alternata f. sp. 引起的 马里,显著影响果产量.
  • 与病原发生相关的 (PR) 基因对植物免疫至关重要,但它们的调节机制尚未完全理解.

研究的目的:

  • 研究一种转录因子MdDREB2A在果对Alternaria alternata的防御中的作用.
  • 阐明果免疫中涉及MdDREB2A和致病相关 (PR) 基因的调控网络.

主要方法:

  • DAP-seq分析以确定MdDREB2A的直接目标.
  • ChIP-qPCR,EMSA和双露西法酶测定验证了基因调节.
  • 对MdDREB2A过度表达和淘汰植物对疾病易感性的分析.

主要成果:

  • MdDREB2A通过抑制MdPR10基因表达来负面调节果对A. alternata的耐药性.
  • 过度表达MdDREB2A增加了敏感性,而敲击则增强了抵抗力.
  • MdDREB2A直接结合并抑制三种具有抗真菌活性的MdPR10基因的转录.

结论:

  • MdDREB2A充当了对果中的A. alternata防御的负调节者.
  • MdDREB2A对MdPR10基因的抑制降低了抗真菌耐药性.
  • 这一发现为开发抗叶斑病的果品种提供了一个新的目标.