Systemic acquired resistancePlant defense responseTrichoderma species includes many important in agriculture strains, known as effective biological control agents (BCAs). While their capability of mycoparasitism and strong position as antagonists of pathogenic microorganisms are quite well understood, there are...
近日,德国亚琛工业大学(RWTH Aachen University)Uwe Conrath研究团队在Plant Physiology上发表一篇题为Isolation of open chromatin identifies regulators of systemic acquired resistance的研究论文,综合运用RNA-seq和FAIRE-seq技术鉴定到拟南芥SAR相关新的调控因子。 该研究利用生物信息学分析发现,丁香假单胞侵染拟南芥叶片后...
当植物受到病原菌侵染时,在被侵染部位发生过敏性反应(Hypersensitive Response,HR)以阻止病原菌扩散。同时,植株在一定的时期内对病原菌产生抗性,在再次感染时会迅速诱导防御基因,称为系统获得性抗性(Systemic acquired resistance, SAR)【1】。SAR为植物抵抗病原菌的免疫启动和对大多数病菌的广谱抗性提供了保障【2】。
除细胞自主免疫外,坏死型病原物侵染或某些生化制剂诱导处理后,植株未受侵染或处理部位产生对随后病原物侵染的抗性,这种现象被称为系统性获得抗病性(systemic acquired resistance, SAR),该过程的发生需要细胞间的通讯。研究表明,植物细胞之间的通讯主要通过质外体和共质体途径进行的。在质外体途径中,信号分子离开产生信...
Regulatory and Functional Aspects of Indolic Metabolism in Plant Systemic Acquired Resistance. Molec. Plant 9:662-681.Elia Stahl,Patricia Bellwon,Stefan Huber,Klaus Schlaeppi,Friederike Bernsdorff,Armelle Vallat-Michel,Felix Mauch. Regulatory and Functional Aspects of Indolic Metabolism in Plant ...
NPR1 is an essential regulator of plant systemic acquired resistance (SAR), which confers immunity to a broad-spectrum of pathogens. SAR induction results in accumulation of the signal molecule salicylic acid (SA), which induces defense gene expression via activation of NPR1. We found that in an...
Active oxygen species in the induction of plant systemic acquired resistance by salicylic acid. Chen Z, Silva H, Klessig DF (1993) Active oxygen species in the induction of plant systemic acquired resistance by salicylic acid. Science 262:1883–... Chen,Zhixiang,Silva,... - 《Science》 被引...
Systemic acquired resistance (SAR) is a defense mechanism which is able to induce plants to resist against microorganisms continuously. SAR needs the signal molecule salicylic acid (SA) to participate in, and it is associated with accumulation of pathogenesis-related proteins (PR), which are thought...
其二,MeSA是另一种参与植物系统性获得抗性(SAR, systemic acquired resistance)的挥发性物质。SA结合蛋白2(SABP2)OBP是一种属于α/β折叠水解酶超家族(α/β-fold hydrolase superfamily)的酯酶,它以较高的亲和力结合SA,一直MeSA酯酶的活性,并使无生物活性的MeSA转化为有活性的SA。其三,近期发现的一种特异性结合...
这个强大的防御反应被称为系统获得性抗性(systemic acquired resistance, SAR)。哌啶酸(pipecolic acid, Pip)和N-羟基哌啶酸(N-hydroxypipecolic acid, NHP)参与调控SAR。另外,ALD1(AGD2-like Defense Response Protein1)和FMO1(Flavin-Dependent Monooxygenase1)是Pip和NHP生物合成中的关键催化酶,并且这两种酶会被病...