GEPHE SUMMARY Print
Entry Status
Published
GepheID
GP00000930
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Sorghum bicolor
Trait State in Taxon B
Sorghum bicolor- SM100 and BTx406
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Common Name
sorghum
Synonyms
Andropogon sorghum; Sorghum bicolor subsp. bicolor; Sorghum nervosum; Sorghum saccharatum; Sorghum vulgare; sorghum; broomcorn; milo; Andropogon sorghum (L.) Brot.; Sorghum bicolor (L.) Moench; Sorghum nervosum Besser ex Schult.; Sorghum saccharatum (L.) Moench; Sorghum vulgare Pers.; Sorghum bicolor milo; Sorghum_bicolor
Rank
species
Lineage
Show more ... yta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Sorghinae; Sorghum
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
sorghum
Synonyms
Andropogon sorghum; Sorghum bicolor subsp. bicolor; Sorghum nervosum; Sorghum saccharatum; Sorghum vulgare; sorghum; broomcorn; milo; Andropogon sorghum (L.) Brot.; Sorghum bicolor (L.) Moench; Sorghum nervosum Besser ex Schult.; Sorghum saccharatum (L.) Moench; Sorghum vulgare Pers.; Sorghum bicolor milo; Sorghum_bicolor
Rank
species
Lineage
Show more ... yta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Sorghinae; Sorghum
NCBI Taxonomy ID
is Taxon B an Infraspecies?
Yes
Taxon B Description
Sorghum bicolor- SM100 and BTx406
GENOTYPIC CHANGE
Generic Gene Name
PRR37
Synonyms
PRR37; OsPRR37; DTH7; HD2; Os07g0695100; LOC_Os07g49460; P0627E10.21
Sequence Similarities
Belongs to the ARR-like family.
GO - Molecular Function
-
GO - Cellular Component
UniProtKB
Oryza sativa subsp. japonica
GenebankID or UniProtKB
Presumptive Null
Yes
Molecular Type
Aberration Type
Deletion Size
1-9 bp
Molecular Details of the Mutation
1bp deletion resulting in frameshift
Experimental Evidence
Authors
Murphy RL; Klein RR; Morishige DT; Brady JA; Rooney WL; Miller FR; Dugas DV; Klein PE; et al. ... show more
Abstract
Optimal flowering time is critical to the success of modern agriculture. Sorghum is a short-day tropical species that exhibits substantial photoperiod sensitivity and delayed flowering in long days. Genotypes with reduced photoperiod sensitivity enabled sorghum's utilization as a grain crop in temperate zones worldwide. In the present study, Ma(1), the major repressor of sorghum flowering in long days, was identified as the pseudoresponse regulator protein 37 (PRR37) through positional cloning and analysis of SbPRR37 alleles that modulate flowering time in grain and energy sorghum. Several allelic variants of SbPRR37 were identified in early flowering grain sorghum germplasm that contain unique loss-of-function mutations. We show that in long days SbPRR37 activates expression of the floral inhibitor CONSTANS and represses expression of the floral activators Early Heading Date 1, FLOWERING LOCUS T, Zea mays CENTRORADIALIS 8, and floral induction. Expression of SbPRR37 is light dependent and regulated by the circadian clock, with peaks of RNA abundance in the morning and evening in long days. In short days, the evening-phase expression of SbPRR37 does not occur due to darkness, allowing sorghum to flower in this photoperiod. This study provides insight into an external coincidence mechanism of photoperiodic regulation of flowering time mediated by PRR37 in the short-day grass sorghum and identifies important alleles of SbPRR37 that are critical for the utilization of this tropical grass in temperate zone grain and bioenergy production.
Additional References
RELATED GEPHE
Related Genes
Related Haplotypes
2
EXTERNAL LINKS
COMMENTS
YOUR FEEDBACK is welcome!