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expand all sections collapse all sections  Zea mays subsp. mays Gene "v24"
ID 540
Name v24 (GENE SYMBOL)
Synonyms (5)
GRAMENE GENEGR:0200555
Type Gene
Species Zea mays subsp. mays (Maize) [ GR_tax:014546 ]
Germplasm
Description Like v1, except not cold-sensitive and developmentally conditional high
chlorophyll fluorescence attributable to premature assembly of the light
harvesting complexes. First 3 to 4 leaves emerge as white or pale yellow,
dependent on genetic background, and green slowly and uniformly from tip down.
Similar to v1, except developmentally conditional hcf (high chlorophyll leaf
fluorescence), and not cold sensitive. High yield of leaf chlorophyll
fluorescence is restricted to early stages of greening and attributable to
premature assembly of the major light harvesting complex, LHCII. Thylakoid
polypeptide composition of fully greened leaves is normal. Developing v24-424
chloroplasts have normal thylakoid lipid composition (Polacco et al. 1985 Plant
Physiol. 77:795-800), elevated thylakoid plastoquinone (M. Polacco, unpublished)
and normal levels of a plastid transcript, psbA (Polacco et al. 1987 Dev. Genet.
8:389). In the field and plastic greenhouse, growth is slow, plants are
palegreen and seedlings often die unless shaded during 1- to 5-leaf stage. In
contrast, in growth chamber or glass greenhouse, 5- to 7-leaf seedlings are
visibly similar to normal sibs, both in size and extent of greening; however,
the base of emerging leaves after 5-leaf stage is somewhat less green and
dramatically hcf. Survivors in the field are small, late maturing, and have tiny
ears. Classification is excellent if examined on germination. Viability is poor
in field and plastic greenhouse; excellent in growth chamber and glass
greenhouse. (M. Polacco). Genetic 2005 2 coordinates determined from these
recombination and map data: T1-2(4464) v24; bnlg2077 -9- v24 -9- mmc0191; see
MaizeGDB ID:934757. This gene was originally curated in MaizeGDB Database and
the map position was displayed on the maize bins map if feasible.
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