Plant Immunity
Plant immunity is the ability of plants to defend themselves against microbes, insects, and other predators. It is an essential part of plant health and helps protect plants from disease and other forms of damage. Plant immunity is achieved by a combination of physical, chemical and biochemical mechanisms. Physical mechanisms such as strong cell walls or rigid cell structures provide a barrier to entry of pathogens or other damaging agents. Chemical compounds like phytoalexins are produced by the plant to repel or kill the invading agent. Additionally, plants have been shown to be capable of recognizing invading agents and activating special pathways known as the plant's innate immune system which result in responses such as reducing the availability of nutrients to the pathogen or producing hormones that increase the plant's resistance. Plant immunity is important for crop production, and understanding how it works can help increase yield, improve crop quality and reduce losses due to disease and pest attacks.
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