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expand all sections collapse all sections  Zea mays subsp. mays Gene "sh2"
ID 829
Name sh2 (GENE SYMBOL)
Synonyms (4)
GRAMENE GENEGR:0200490
Type Gene
Species Zea mays subsp. mays (Maize) [ GR_tax:014546 ]
Germplasm
Description Inflated, transparent, sweet kernels collapse on drying, becoming angular and
brittle; endosperm ADPG pyrophosphorylase subunit (compare bt2); application:
"supersweet" sweet corn - kernels sugar-sweet for long period. Large, plump
translucent kernels which are crisp and very sweet at the milk stage and
collapse on drying, becoming angular and brittle (compare bt2). Failure of ADPG
pyrophosphorylase causes accumulation of sucrose and lipids instead of water
soluble polysaccarides and starch (Laughnan 1953 Genetics 38:485), hence the
"super sweet" kernel known in the sweet corn industry. Germinates poorly to
produce smaller but otherwise normal plants. Selection to overcome poor
germination and poor growth has been achieved for sweet corn production. Mutant
lacks transcript and immunoreactive polypeptide (Barton et al 1986; Preiss et al
1990). bnl#(sh2)(1050). With bt2, complements E. coli mutant glgC. 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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