shaik umme salma am, MFK 1710 college of fisheries manglore

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

2. 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:
1. Mucor.
2. 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. An organism that causes the death of host
tissues as it grows through them such that it
is always colonising dead substrate.

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

7.  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.  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.

10.  THANK U