GEPHE SUMMARY
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Gephebase Gene
Entry Status
Published
GepheID
GP00000985
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Glycine max - sensitive
Trait State in Taxon B
Glycine max - resistant - rhg1-b allele - "PI 88788-type"; high-copy number; four or more Rhg1 repeats
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
soybean
Synonyms
soybean; soybeans; Glycine max (L.) Merr.; Glycine max; cv. Wye
Rank
species
Lineage
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angiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade; NPAAA clade; indigoferoid/millettioid clade; Phaseoleae; Glycine; Soja
Parent
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
soybean
Synonyms
soybean; soybeans; Glycine max (L.) Merr.; Glycine max; cv. Wye
Rank
species
Lineage
Show more ...
angiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade; NPAAA clade; indigoferoid/millettioid clade; Phaseoleae; Glycine; Soja
Parent
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Generic Gene Name
rhg1s
Synonyms
Rfs2; Rhg1; rhg1g
String
-
Sequence Similarities
-
GO - Molecular Function
GO:0005524 : ATP binding
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GO - Biological Process
-
GO - Cellular Component
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
Copy number Variant : 10-tandem copies of the gene cluster in resistant strains ; the 3 dissimilar genes participate to resistance
Experimental Evidence
Main Reference
Authors
Cook DE; Lee TG; Guo X; Melito S; Wang K; Bayless AM; Wang J; Hughes TJ; et al.
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Abstract
The rhg1-b allele of soybean is widely used for resistance against soybean cyst nematode (SCN), the most economically damaging pathogen of soybeans in the United States. Gene silencing showed that genes in a 31-kilobase segment at rhg1-b, encoding an amino acid transporter, an α-SNAP protein, and a WI12 (wound-inducible domain) protein, each contribute to resistance. There is one copy of the 31-kilobase segment per haploid genome in susceptible varieties, but 10 tandem copies are present in an rhg1-b haplotype. Overexpression of the individual genes in roots was ineffective, but overexpression of the genes together conferred enhanced SCN resistance. Hence, SCN resistance mediated by the soybean quantitative trait locus Rhg1 is conferred by copy number variation that increases the expression of a set of dissimilar genes in a repeated multigene segment.
Additional References
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