Pathogen-plant interaction, effect

Antibiotic substances and their molecular genetics are summarized for the best studied system of fluorescent Pseudomonas, producing up to. seven different compounds. Similar extensive studies should be done for other important rhizosphere bacteria as potential important antagonists for root pathogens. The best-studied example for the effects of vitamins in the rhizosphere is biotin. The molecular genetics of production and uptake of vitamins in the plant-microbe interaction is also a field of interesting future work. 

Before we can predict the response of a plant variety to a specific pollutant or group of pollutants, we must understand the following factors genetic variability (both between and within species), climatic and edaphic factors, interactions with other pollutants, interactions with biotic pathogens and insects, and the growth and physiologic age of susceptible plant tissue. The overall conceptualization of relationships between pollutant exposure and ultimate effects is shown simplistically (Figure 11-1) in an adaptation from van Haut and Stratmann. ... 

In most research on lower organisms, there has been an attempt to use ozone as a germicide or to understand the interactions of pollutants and pathogens on the responses of higher plants. In few studies has the interest been on the effects of ozone on the organisms themselves, except in the studies of effects on algae. 

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