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GO:0009555 pollen development

The process whose specific outcome is the progression of the pollen grain over time, from its formation to the mature structure. The process begins with the meiosis of the microsporocyte to form four haploid microspores. The nucleus of each microspore then divides by mitosis to form a two-celled organism, the pollen grain, that contains a tube cell as well as a smaller generative cell. The pollen grain is surrounded by an elaborate cell wall. In some species, the generative cell immediately divides again to give a pair of sperm cells. In most flowering plants, however this division takes place later, in the tube that develops when a pollen grain germinates.

Term Information

ID GO:0009555
Name pollen development
Ontology Biological Process
Definition The process whose specific outcome is the progression of the pollen grain over time, from its formation to the mature structure. The process begins with the meiosis of the microsporocyte to form four haploid microspores. The nucleus of each microspore then divides by mitosis to form a two-celled organism, the pollen grain, that contains a tube cell as well as a smaller generative cell. The pollen grain is surrounded by an elaborate cell wall. In some species, the generative cell immediately divides again to give a pair of sperm cells. In most flowering plants, however this division takes place later, in the tube that develops when a pollen grain germinates.
Comment

Synonyms

Type Synonym
exact formation of generative and vegetative cells
exact male gametophyte formation
exact male gametophyte development
exact pollen grain formation
exact microgametophyte development

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Ancestor Chart

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Ancestor Table

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GO:0008150 biological_process
GO:0032501 multicellular organismal process
GO:0032502 developmental process
GO:0007275 multicellular organismal development
GO:0048229 gametophyte development
GO:0009555 pollen development

Relationship key

Code Relationship
part of
is a
regulates
+ve regulates
-ve regulates

Child Terms

All direct descendants (child terms) available for this GO term:
P GO:0010152 pollen maturation
P GO:0010208 pollen wall assembly
P GO:0009556 microsporogenesis
P GO:0055046 microgametogenesis

Relationship key

CodeRelationship
Ppart of
Iis a

Protein Annotation

DB
ID
Qualifier colocalizes_with contributes_to NOT NOT|colocalizes_with NOT|contributes_to
GO Term
Reference
Evidence IMP IGI IPI IGC ISS IDA IEP IEA TAS NAS ND IC RCA ISA EXP
With
Taxonomy
From
Download limit
Format

Co-occurring Terms

Co-occurrence statistics

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IMP IGI IPI IGC ISS IDA IEP IEA TAS NAS ND IC RCA ISA EXP Statistics may take up to 1 minute to calculate
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12ms
Stand-alone
Hostnametomcat-7.ebi.ac.uk
Uptime16:38 12/10/2009
Data version2009-11-23-04-03-36
Terminal
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