Plant innate immunity: An updated insight into defense mechanism

Journal of biosciences

Manoj Prasad1¹  Mehanathan Muthamilarasan¹ 

[1] National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110 067, India$$

关键词: Effector-triggered immunity;    microbial-associated molecular-patterns-triggered immunity;    plant immunity;    RNAi;    systemic acquired resistance;    trans-generational immune memory;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Plants are invaded by an array of pathogens of which only a few succeed in causing disease. The attack by others is countered by a sophisticated immune system possessed by the plants. The plant immune system is broadly divided into two, viz. microbial-associated molecular-patterns-triggered immunity (MTI) and effector-triggered immunity (ETI). MTI confers basal resistance, while ETI confers durable resistance, often resulting in hypersensitive response. Plants also possess systemic acquired resistance (SAR), which provides long-term defense against a broad-spectrum of pathogens. Salicylic-acid-mediated systemic acquired immunity provokes the defense response throughout the plant system during pathogen infection at a particular site. Trans-generational immune priming allows the plant to heritably shield their progeny towards pathogens previously encountered. Plants circumvent the viral infection through RNA interference phenomena by utilizing small RNAs. This review summarizes the molecular mechanisms of plant immune system, and the latest breakthroughs reported in plant defense. We discuss the plant–pathogen interactions and integrated defense responses in the context of presenting an integral understanding in plant molecular immunity.

【 授权许可】

Unknown