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Fungi Plentechyma

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Most fungal aggregations consist of parallel hyphae. The individual hyphae are recognisable as
such and the term used to describe these tissues is “prosenchyma”, meaning loosely organised
tissue. Some fungi develop more tightly organised tissue where the tightly packed cells resemble
plant parenchyma. These tissues are referred to as “pseudoparenchyma”, meaning false
parenchyma. The hyphal origin of the cells is less obvious in pseudoparenchyma.
Two types of structure are formed from pseudoparenchyma: sclerotia and stromata. The
differences between the two types of tissue is simply that one bears or contains fruiting bodies,
and the other does not.
Stromata of Claviceps
During development, stromata resemble sclerotia, though in addition, some host plant tissue may
be incorporated in stromata. Indeed, sclerotia may eventually form fruiting bodies following
recovery from dormancy. The distinction between the two complex tissues is unclear.
Sclerotium
The term sclerotium is used in a functional sense. The rounded bodies are able to survive periods
of adverse environment. They remain dormant or quiescent during the stressful period and then
germinate when conditions are more favourable.

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Student’s Name Course Date Most fungal aggregations consist of parallel hyphae. The individual hyphae are recognisable as such and the term used to describe these tissues is “prosenchyma”, meaning loosely organised tissue. Some fungi develop more tightly organised tissue where the tightly packed cells resemble plant parenchyma. These tissues are referred to as “pseudoparenchyma”, meaning false parenchyma. The hyphal origin of the cells is less obvious in pseudoparenchyma. Two types of structure are formed from pseudoparenchyma: sclerotia and stromata. The differences between the two ...
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