saprotophs,necrotrops and sewage fungus complex

shaik umme salma
am, MFK 1710
college of fisheries manglore

1. SAPROTROPHS,NECROTROPHS AND SEWAGE FUNGUS COMPLEX SAPROTROPHS , NECROTROPHS AND SEWAGE FUNGUS COMPLEX

2. SAPROTROPHS Any organism , especially a fungus or bacterium,that lives and feeds on dead organic matter. SAPROTROPHIC NUTRITION: Lysotrophic nutrition Process of chemoheterotrophic extracellular digestion involved in processing of dead organic matter.

3. Examples: Mucor . Soil bacteria. Sometimes called as saprobes. This process is most often facilitated through the active transport. The facultative saprophytes appears on stressed

4. Or drying plants and may combine with live pathogens. Presence of water. Presence of oxygen. Low medium temperature. neutral acidic ph.

5. NECROTROPHS An organism that causes the death of host tissues as it grows through them such that it is always colonising dead substrate.

6. DISEASE Increased temperature and CO2 levels. Change in geographical distribution. More stubble=more necrotrophs .

7. BROWN PATCH The fungus it self is a necrotrophs as it release toxins which kills the cell . Before it feeds on it leading to appearance of lesions in infected leaves.

8. SEWAGE-FUNGUS COMPLEX The biological component of the activated sludge system is consists of microorganisms. . Cell makeup depends on both the chemical composition of the wastewater and the specific characteristics of the organisms in the biological community.

9. Bacteria, fungi, protozoans , and rotifers constitute the biological component, or biological mass, of activated sludge. . However, the constant agitation in the aeration tanks and sludge recirculation are deterrents to the growth of higher organisms. The most common sewage fungi are Sphaerotilus natans and Zoogloea sp.

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