What is Host Plant Resistance?

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Host plant resistance is the range of adaptations and advancements evolved by plants in order to improve their survivability and chances of successful reproduction. This is achieved by reducing the overall effects of destructive herbivores. Plants are able to sense when they are being touched by a foreign object and or animal/insect, they can then employ a list of strategies in order to defend against possible danger or damage. (by herbivores) Many plants produce chemical defences that act as repellents or toxins to herbivores, and even sometimes reduce digestibility.

 

Other defensive strategies used by plants include escaping or avoiding herbivores, at any point in time or place. An example of this is growing in a location where they are less vulnerable to herbivore interception, such as areas where herbivores are unable to easily access them, or not able to reach them at all. (or by changing seasonal growth patterns to avoid interaction with herbivores all together)

 

Another strategy used by some plants is to divert the herbivores away from the essential parts of the plant, instead directing them to non-essential parts allowing the plant to grow as if it hadn’t been altered. Some plants even completely avoid all these steps and instead choose to focus on their ability to grow faster in competition with the herbivores.

 

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