Phytoalexin

... plants or elicitation of cell cultures initiates substantial metabolic changes directed at the induction of defence reactions. The antimicrobial phytoalexins deserve special attention because they represent one essential component of plant resistance. The great structural diversity of phytoalexins ...

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... th upper one..the upper one just get curlied but no chlorocys were spotted. After reading and reading I found that plants use substances named Phytoalexin and PR (Pathogenic-Related) protein to supress the virus and depositioning the lignin. @Andrew Still remember plant hormone named Brassinolide ...

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