ClueBot NG Report Interface

// Report

Navigation

ID:1783051
User:180.234.197.198
Article:Basidiomycota
Diff:
m (Reverted edits by 216.163.216.61 (talk) to last revision by Codeh (HG))
Line 49: Line 49:
   
 
==Variations in life-cycles==
 
==Variations in life-cycles==
Many variations occur. Some are self-compatible and spontaneously form dikaryons without a separate compatible thallus being involved. These fungi are said to be ''homothallic'', versus the normal ''heterothallic'' species with mating types. Others are '''secondarily homothallic''', in that two compatible nuclei following meiosis migrate into each basidiospore, which is then dispersed as a pre-existing dikaryon. Often such species form only two spores per basidium, but that too varies. Following meiosis, mitotic divisions can occur in the basidium. Multiple numbers of basidiospores can result, including odd numbers via degeneration of nuclei, or pairing up of nuclei, or lack of migration of nuclei. For example, the chanterelle genus ''[[Craterellus]]'' often has 6-spored basidia, while some corticioid ''[[Sistotrema]]'' species can have 2-, 4-, 6-, or 8-spored basidia, and the cultivated button mushroom, ''[[Agaricus bisporus]]''. can have 1-, 2-, 3- or 4-spored basidia under some circumstances. Occasionally monokaryons of some taxa can form morphologically fully formed basidiomes and anatomically correct basidia and ballistic basidiospores in the absence of dikaryon formation, diploid nuclei, and meiosis. A rare few number of taxa have extended diploid life-cycles, but can be common species. Examples exist in the mushroom genera ''[[Armillaria]]'' and ''[[Xerula]]'', both in the [[Physalacriaceae]]. Occasionally basidiospores are not formed and parts of the "basidia" act as the dispersal agents, e.g. the peculiar mycoparasitic jelly fungus, ''[[Tetragoniomyces]]'' or the entire "basidium" acts as a "spore", e.g. in some false puffballs (''[[Scleroderma (genus)|Scleroderma]]''). In the human pathogenic genus ''[[Cryptococcus (fungus)|Cryptococcus]]'', 4 nuclei following meiosis remain in the basidium but continually divide mitotically, each nucleus migrating into synchronously forming nonballistic basidiospores that are then pushed upwards by another set forming below them, resulting in 4 parallel chains of dry "basidiospores".
+
Many sexy variations occur. Some are self-compatible and spontaneously form dikaryons without a separate compatible thallus being involved. These fungi are said to be ''homothallic'', versus the normal ''heterothallic'' species with mating types. Others are '''secondarily homothallic''', in that two compatible nuclei following meiosis migrate into each basidiospore, which is then dispersed as a pre-existing dikaryon. Often such species form only two spores per basidium, but that too varies. Following meiosis, mitotic divisions can occur in the basidium. Multiple numbers of basidiospores can result, including odd numbers via degeneration of nuclei, or pairing up of nuclei, or lack of migration of nuclei. For example, the chanterelle genus ''[[Craterellus]]'' often has 6-spored basidia, while some corticioid ''[[Sistotrema]]'' species can have 2-, 4-, 6-, or 8-spored basidia, and the cultivated button mushroom, ''[[Agaricus bisporus]]''. can have 1-, 2-, 3- or 4-spored basidia under some circumstances. Occasionally monokaryons of some taxa can form morphologically fully formed basidiomes and anatomically correct basidia and ballistic basidiospores in the absence of dikaryon formation, diploid nuclei, and meiosis. A rare few number of taxa have extended diploid life-cycles, but can be common species. Examples exist in the mushroom genera ''[[Armillaria]]'' and ''[[Xerula]]'', both in the [[Physalacriaceae]]. Occasionally basidiospores are not formed and parts of the "basidia" act as the dispersal agents, e.g. the peculiar mycoparasitic jelly fungus, ''[[Tetragoniomyces]]'' or the entire "basidium" acts as a "spore", e.g. in some false puffballs (''[[Scleroderma (genus)|Scleroderma]]''). In the human pathogenic genus ''[[Cryptococcus (fungus)|Cryptococcus]]'', 4 nuclei following meiosis remain in the basidium but continually divide mitotically, each nucleus migrating into synchronously forming nonballistic basidiospores that are then pushed upwards by another set forming below them, resulting in 4 parallel chains of dry "basidiospores".
   
 
Other variations occur, some as standard life-cycles (that themselves have variations within variations) within specific orders.
 
Other variations occur, some as standard life-cycles (that themselves have variations within variations) within specific orders.
Reason:ANN scored at 0.895151
Your username:
Reverted:Yes
Comment
(optional):

Note: Comments are completely optional. You do not have to justify your edit.
If this is a false positive, then you're right, and the bot is wrong - you don't need to explain why.