来自不同王国的叶松病原体共享防御诱导效应蛋白
Mariana Tarallo1,2, Carl H Mesarich2,3, Rebecca L McDougal2,4
1School of Food Technology and Natural Sciences, Massey University, Palmerston North, New Zealand.
Molecular plant pathology
|March 3, 2025
概括
研究人员在三个主要的松树病原体中确定了共同的效应蛋白. 这些效应器激活植物的免疫反应,提供了对Dothistroma针炎和其他叶病的持续耐药性工程的潜力.
科学领域:
- 植物病理学 植物病理学
- 分子生物学分子生物学
- 菌类学 菌类学是指菌类学.
背景情况:
- 多西斯特罗玛针病,旋风性针病和红针病是重要的松树疾病.
- 诸如Dothistroma septosporum,Cyclaneusma minus和Phytophthora pluvialis之类的病原体分泌效应蛋白来促进感染.
- 宿主耐药性蛋白质可以识别病原体效应因子,触发植物免疫反应.
研究的目的:
- 为了识别和描述D. septosporum,C.minus和P. pluvialis.共同的效应蛋白.
- 研究这些常见效应因子在植物免疫系统激活中的作用.
主要方法:
- 研究了来自D. septosporum的三个候选作用剂 (CE):Ds69335,Ds131885和Ds74283.
- 评估了CE与C.减和P. pluvialis.中的同类的序列和结构相似性.
- 在Nicotiana物种和Pinus radiata中评估了效应因子诱导的反应 (化,细胞死亡).
- 利用一个缺乏SOBIR1共受体的尼科蒂亚娜本塔米亚纳突变来评估免疫系统的参与.
主要成果:
- Ds74283和Ds131885,以及它们的同类,在尼科蒂亚纳物种中诱导了化或细胞死亡.
- Ds131885及其同类也触发了Pinus radiata的细胞死亡.
- Ds131885诱导的化在缺少SOBIR1的尼科蒂亚娜本塔米亚娜中减少,这表明免疫系统激活.
结论:
- 常见的跨王国效应蛋白可以激活植物免疫系统.
- 效应器的序列或结构相似性与免疫识别有关.
- 这些发现可能会促进对叶松病原体产生持久的,广泛的耐药性.
相关概念视频
Defenses Against Pathogens and Herbivores
22.9K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
22.9K
Introduction to Plant Diversity
43.5K
From Water to Land
43.5K
Cell Signaling in Plants
5.6K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.6K
Epiphytes, Parasites, and Carnivores
12.9K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
12.9K
Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
Antimicrobial Proteins
864
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
864


