Campbell Essential Biology with Physiology (6th Edition)
Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 29, Problem 1SQ
Summary Introduction

To explain: How the antifungal sprays might be harmful to the plants.

Concept introduction:

For absorption process, many plants gain some significant surface areas through symbiotic associations with fungi. The plant roots and the associated fungus create a mutualistic structure called as mycorrhiza. The fungal filaments around the roots absorb water and the minerals much more rapidly than the roots that absorb alone.

Expert Solution & Answer
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Explanation of Solution

The fungi and the plants have a symbiotic association with each other called mycorrhiza. The plant roots associated with fungus absorb water and minerals more than the normal plants. But there are some fungi that cause diseases. To get rid of fungal diseases, some antifungal sprays are used.

Plants that are unaffected by fungal diseases when they are exposed to fungicides may cause various effects on plant growth, photosynthesis, and nutrients. Some fungicides have copper that destroys the chloroplasts, affecting photosystem I (PSI) and the biosynthesis of chlorophyll. Also the symbiotic relation between mycorrhiza and plant root is damaged due to these fungicides. If the fungicides affect the mycorrhiza, the water and mineral absorption in plant reduces. It causes water and mineral deficiency in plants.

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