scholarly journals Identification of MicroRNAs Involved in Pathogen-Associated Molecular Pattern-Triggered Plant Innate Immunity

2010 ◽  
Vol 152 (4) ◽  
pp. 2222-2231 ◽  
Author(s):  
Yan Li ◽  
QingQing Zhang ◽  
Jiangguang Zhang ◽  
Liang Wu ◽  
Yijun Qi ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Plant Innate Immunity ◽  
Molecular Pattern ◽  
Pathogen Associated Molecular Pattern

Plant innate immunity in strawberry induced by pathogen-associated molecular pattern harpin and acibenzolar-S-methyl

2021 ◽  
Author(s):  
Silvia Scariotto ◽  
Vanessa Nataline Tomazeli ◽  
Marcos Vily Paladini ◽  
Cristiane de Oliveira Bolina ◽  
Renato Lustosa Sobrinho ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Plant Innate Immunity ◽  
Molecular Pattern ◽  
Pathogen Associated Molecular Pattern

scholarly journals The bacterial quorum sensing signal DSF hijacks Arabidopsis thaliana sterol biosynthesis to suppress plant innate immunity

2020 ◽  
Vol 3 (10) ◽  
pp. e202000720
Author(s):  
Tuan Minh Tran ◽  
Zhiming Ma ◽  
Alexander Triebl ◽  
Sangeeta Nath ◽  
Yingying Cheng ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Arabidopsis Thaliana ◽  
Plasma Membrane ◽  
Quorum Sensing ◽  
Xanthomonas Campestris ◽  
Pathogenic Bacteria ◽  
Specific Effect ◽  
Molecular Pattern ◽  
Pathogen Associated Molecular Pattern ◽  
Bacterial Quorum

Quorum sensing (QS) is a recognized phenomenon that is crucial for regulating population-related behaviors in bacteria. However, the direct specific effect of QS molecules on host biology is largely understudied. In this work, we show that the QS molecule DSF (cis-11-methyl-dodecenoic acid) produced by Xanthomonas campestris pv. campestris can suppress pathogen-associated molecular pattern–triggered immunity (PTI) in Arabidopsis thaliana, mediated by flagellin-induced activation of flagellin receptor FLS2. The DSF-mediated attenuation of innate immunity results from the alteration of FLS2 nanoclusters and endocytic internalization of plasma membrane FLS2. DSF altered the lipid profile of Arabidopsis, with a particular increase in the phytosterol species, which impairs the general endocytosis pathway mediated by clathrin and FLS2 nano-clustering on the plasma membrane. The DSF effect on receptor dynamics and host immune responses could be entirely reversed by sterol removal. Together, our results highlighted the importance of sterol homeostasis to plasma membrane organization and demonstrate a novel mechanism by which pathogenic bacteria use their communicating molecule to manipulate pathogen-associated molecular pattern–triggered host immunity.

scholarly journals Endogenous Molecules Induced by a Pathogen-Associated Molecular Pattern (PAMP) Elicit Innate Immunity in Shrimp

PLoS ONE ◽  
2014 ◽  
Vol 9 (12) ◽  
pp. e115232 ◽  
Author(s):  
Yu-Yuan Chen ◽  
Jiann-Chu Chen ◽  
Yong-Chin Lin ◽  
Suwaree Kitikiew ◽  
Hui-Fang Li ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Molecular Pattern ◽  
Pathogen Associated Molecular Pattern

scholarly journals ThePseudomonas syringaetype III effector HopG1 targets mitochondria, alters plant development and suppresses plant innate immunity

2010 ◽  
Vol 12 (3) ◽  
pp. 318-330 ◽  
Author(s):  
Anna Block ◽  
Ming Guo ◽  
Guangyong Li ◽  
Christian Elowsky ◽  
Thomas E. Clemente ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Plant Development ◽  
Plant Innate Immunity

scholarly journals The Fungal Effector Avr-Pita Suppresses Innate Immunity by Increasing COX Activity in Rice Mitochondria

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jingluan Han ◽  
Xiaoyu Wang ◽  
Fengpin Wang ◽  
Zhe Zhao ◽  
Gousi Li ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Host Plant ◽  
Fungal Pathogen ◽  
Defense Responses ◽  
Oxygen Species ◽  
Mitochondrial Reactive Oxygen Species ◽  
Molecular Pattern ◽  
Ros Accumulation ◽  
Ros Metabolism ◽  
Increased Susceptibility

Abstract Background Avr-Pita was the first effector identified in the blast fungus (Magnaporthe oryzae)–rice (Oryza sativa) pathosystem. However, the molecular mechanism underlying its effects on the host plant has remained a long-standing mystery. Results Here, we report that ectopically expressing Avr-Pita in rice enhances susceptibility to M. oryzae and suppresses pathogen-associated molecular pattern (PAMP)-triggered defense responses. Avr-Pita targets the host mitochondria and interacts with the cytochrome c oxidase (COX) assembly protein OsCOX11, a key regulator of mitochondrial reactive oxygen species (ROS) metabolism in rice. Overexpressing Avr-Pita or OsCOX11 increased COX activity and decreased ROS accumulation triggered by the fungal PAMP chitin. OsCOX11-overexpressing plants showed increased susceptibility to M. oryzae, whereas OsCOX11-knockdown plants showed resistance to M. oryzae. Conclusions Taken together, these findings suggest that the fungal pathogen M. oryzae delivers the effector Avr-Pita to the host plant, where it enhances COX activity thus decreasing ROS accumulation. Therefore, this effector suppresses host innate immunity by perturbing ROS metabolism in the mitochondria.

scholarly journals The Receptor-like Cytoplasmic Kinase BIK1 Localizes to the Nucleus and Regulates Defense Hormone Expression during Plant Innate Immunity

2018 ◽  
Vol 23 (4) ◽  
pp. 485-497.e5 ◽  
Author(s):  
Neeraj K. Lal ◽  
Ugrappa Nagalakshmi ◽  
Nicholas K. Hurlburt ◽  
Rosalva Flores ◽  
Aurelie Bak ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Plant Innate Immunity
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