Q21 What are the favourable conditions for the growth of fungus?
Google Chennai batao apne aap
Answers
What are the best conditions for fungal growth?
Conditions for best fungal growth :-
Temperature: 25- 30 degree celcious.
Humidity: high moist humid environment.
pH: Moulds differ in their pH requirements. Most will grow well over the pH range 3-7. Some such as Aspergillus niger and Penicillium funiculosum can grow at pH 2 and below.
Nutrients: Nutrient requirements for moulds may vary from mould to mould. Some moulds may thrive well on substrates with high sugar or salt content. Some may prefer simple sugars while others have the ability to utilize complex sugars.
Light: Many moulds species grow well in the dark, but some prefer daylight or alternate light and darkness for them to produce spores.
Aeration: Nearly all moulds require air to grow.
Most fungi grow well in a warm, moist environment. If you are thinking of those that grow in soil with obvious fruiting bodies (“mushrooms”), the mycelium and hyphae are always there underground, and the fruiting body (the “mushroom”) shows up when growing conditions get worse.
Honey has some antifungal properties. This may be partly due to osmotic stress (high sugar content). Some fungi are specifically associated with plant roots, and will only grow on a particular plant. Growth of yeast is explained in many bread making books.
Too high of salt or sugar will ruin bread. Cool temperatures (refrigerator) will make yeast grow very slowly. Acidic conditions are bad for fungal growth. With sourdough bread, both yeast and bacteria are contributing.
Fungi includes yeast and molds
Generally fungi grow at 25 degree centigrade temperature with humidity, thats why in rainy days our shoes, leather and papers get attacked by molds.
On the other hand yeast can grow at both 37 and 25 degree centrtigrade.
Diomorphic fungi like Blastomyces dermitidi , Histoplams capsulatum can grow at both temp and shows yeast like morphology at 37 degree.
They generally grow at a pH which is acidic 4–5 or lower in range.
Nutritional condition differes from fungi to fungi - for example certain fungi like Trichoderma sp and Aspergillus can produce Cellulase and can thus simply grow on paper or cellulosic waste,while as many lower fungi are difficult to grow in vitro.