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What is the role of PR genes in plant defense? 


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PR genes play a crucial role in plant defense against biotic and abiotic stresses. These genes are induced by effector molecules produced by pathogens, leading to the synthesis and accumulation of pathogenesis-related proteins (PRs) . PRs are a diverse group of proteins with various functions, including antibacterial, antifungal, membrane permeabilizing, proteinase, peroxidase, ribonuclease, and lysozyme activities . They act as the first line of defense, increasing in abundance upon pathogen attack to reduce damage and mortality . PR1, a member of the PR protein family, has been extensively studied and is known to activate immune responses . PR proteins can also form complexes with other PR family members to enhance the host's immune response . The activation of PR proteins has been observed in response to both biotic and abiotic stresses, making them important candidates for the development of stress-resistant transgenic plants .

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The paper discusses the role of PR1 genes in plant defense. It states that overexpression of PR1 in plants increases resistance against pathogens, indicating their importance in immune defense.

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