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The pathogenic fungus Fusicoccum amygdali secretes a toxin called fusicoccin that

Chapter 36, Problem 2

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QUESTION:

The pathogenic fungus Fusicoccum amygdali secretes a toxin called fusicoccin that activates the plasma membrane proton pumps of plant cells and leads to uncontrolled water loss. Suggest a mechanism by which the activation of proton pumps could lead to severe wilting.

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QUESTION:

The pathogenic fungus Fusicoccum amygdali secretes a toxin called fusicoccin that activates the plasma membrane proton pumps of plant cells and leads to uncontrolled water loss. Suggest a mechanism by which the activation of proton pumps could lead to severe wilting.

ANSWER:


The plasma membrane proton pumps are responsible for maintaining the internal environment of the plant cells by regulating the intake and release of ions and water. Fusicoccin is a toxin that activates these pumps, causing an increase in the release of ions and water from the cells. This causes a decrea

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