Difference between revisions of "Background info on Physco biology and culture"
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precisely known. | precisely known. | ||
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| + | =gametophore= | ||
[[File:P_patens_gametophore.jpg]] | [[File:P_patens_gametophore.jpg]] | ||
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| − | gametophore | + | gametophore (PO:0030018) |
A shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase. | A shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase. | ||
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| + | =protonema= | ||
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| + | protonema (PO:0030003) | ||
| + | A portion of chlorenchyma tissue that develops directly from a spore and grows by division of an apical cell to form filaments that are one cell wide and dicotomously branching. | ||
Revision as of 12:21, 9 November 2011
Physcomitrella patens is a monoecious moss, which requires simple growth conditions for the completion of its life cycle. Moss gametophytes exist in two morphologically distinct forms: the juvenile filamentous tissue called protonema and the adult leafy tissue called gametophore. However, the molecular mechanism for the transition from the juvenile (protonema) to the adult (gametophore) stage is not precisely known.
gametophore
This is a gametophore, with non-vascular leaflets (source Wikimedia commons).
gametophore (PO:0030018)
A shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase.
protonema
protonema (PO:0030003) A portion of chlorenchyma tissue that develops directly from a spore and grows by division of an apical cell to form filaments that are one cell wide and dicotomously branching.
