GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00001890
Main curator
Courtier
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Echinochloa colona - sensitive
Trait State in Taxon B
Echinochloa colona - resistant
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Common Name
-
Synonyms
Echinochloa colonum; Deccan grass; corn panic grass; jungle-rice; millet-rice; shama millet; Echinochloa colona (L.) Link
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Panicodae; Paniceae; Boivinellinae; Echinochloa
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
-
Synonyms
Echinochloa colonum; Deccan grass; corn panic grass; jungle-rice; millet-rice; shama millet; Echinochloa colona (L.) Link
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Panicodae; Paniceae; Boivinellinae; Echinochloa
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
UniProtKB
Arabidopsis thaliana
GenebankID or UniProtKB
Presumptive Null
No
Molecular Type
Aberration Type
SNP
SNP Coding Change
Nonsynonymous
Molecular Details of the Mutation
Pro106Leu leading to resistance
Experimental Evidence
Taxon A Taxon B Position
Codon - - -
Amino-acid Pro Leu 106
Authors
Morran S; Moretti ML; Brunharo CA; Fischer AJ; Hanson BD
Abstract
In California specialty cropping systems such as vineyards and orchards, Echinochloa colona is present as a summer annual weed. It is able to germinate throughout the growing season whenever favorable conditions are present, and management relies heavily on glyphosate applications. Glyphosate-resistant (GR) E. colona biotypes are present in the state, but the levels of resistance observed suggest that there may be differences in mechanisms of resistance among populations.

Echinochloa colona lines collected from different regions of California's Central Valley presented resistance levels ranging from 1.4 to 4.3-fold compared to susceptible lines. No differences in the absorption and translocation of [ C]-glyphosate were observed among lines. Resistant lines accumulated eight-fold less shikimic acid after treatment with 435 and 870 g a.e. ha glyphosate compared to the most susceptible line. Sequencing of a region of the EPSPS gene revealed three single nucleotide changes leading to amino acid substitutions at Proline 106, including Pro106Leu, Pro106Thr and Pro106Ser.

These results indicate that an altered target site in EPSPS is contributing to resistance in these lines and resistance has evolved independently, multiple times in the Central Valley of California. Additional research is needed to further understand the genomic contributions of resistance loci in this polyploid weed species. © 2018 Society of Chemical Industry.

© 2018 Society of Chemical Industry.
Additional References
RELATED GEPHE
Related Genes
No matches found.
Related Haplotypes
2
COMMENTS
@ConvergentEvolution in this species there are three single nucleotide changes leading to amino acid substitutions at Proline 106; including Pro106Leu; Pro106Thr and Pro106Ser
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