Contrasting plant ecological benefits endowed by naturally occurring EPSPS resistance mutations under glyphosate selection
Autor: | Stephen B. Powles, Qin Yu, Heping Han, Martin M. Vila-Aiub, Federico García |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
0106 biological sciences
0301 basic medicine relative fitness Evolution RESISTANCE BENEFIT Eleusine indica GLYPHOSATE Compound heterozygosity 010603 evolutionary biology 01 natural sciences EPSPS MUTATION 03 medical and health sciences chemistry.chemical_compound glyphosate Genotype Genetics QH359-425 Allele Ecology Evolution Behavior and Systematics biology RELATIVE FITNESS food and beverages Original Articles biology.organism_classification Resistance mutation resistance benefit 030104 developmental biology chemistry Glyphosate EPSPS mutation Original Article General Agricultural and Biological Sciences Weed Inbreeding |
Zdroj: | Evolutionary Applications, Vol 14, Iss 6, Pp 1635-1645 (2021) Evolutionary Applications Vol.14, no.6 FAUBA Digital (UBA-FAUBA) Universidad de Buenos Aires. Facultad de Agronomía instacron:UBA-FAUBA |
ISSN: | 1752-4571 |
Popis: | Vila Aiub, Martín Miguel. University of Western Australia (UWA). School of Agriculture and Environment. Australian Herbicide Resistance Initiative (AHRI. Crawley, Western Australia, Australia. Vila Aiub, Martín Miguel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Vila Aiub, Martín Miguel. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Han, Heping. University of Western Australia (UWA). School of Agriculture and Environment. Australian Herbicide Resistance Initiative (AHRI. Crawley, Western Australia, Australia. Yu, Qin. University of Western Australia (UWA). School of Agriculture and Environment. Australian Herbicide Resistance Initiative (AHRI. Crawley, Western Australia, Australia. García, Federico. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. García, Federico. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Powles, Stephen B. University of Western Australia (UWA). School of Agriculture and Environment. Australian Herbicide Resistance Initiative (AHRI. Crawley, Western Australia, Australia. Concurrent natural evolution of glyphosate resistance single and double-point EPSPS mutations in weed species provides an opportunity for the estimation of resistance fitness benefits and prediction of equilibrium resistance frequencies in environments under glyphosate selection. Assessment of glyphosate resistance benefit was conducted for the most commonly identified single Pro-106-Ser and less-frequent double TIPS mutations in the EPSPS gene evolved in the global damaging weed Eleusine indica. Under glyphosate selection at the field dose, plants with the single Pro-106- Ser mutation at homozygous state (P106S-rr) showed reduced survival and compromised vegetative growth and fecundity compared with TIPS plants. Whereas both homozygous (TIPS-RR) and compound heterozygous (TIPS-Rr) plants with the double TIPS resistance mutation displayed similar survival rates when exposed to glyphosate, a significantly higher fecundity in the currency of seed number was observed in TIPS-Rr than TIPS-RR plants. The highest plant fitness benefit was associated with the heterozygous TIPS-Rr mutation, whereas plants with the homozygous Pro-106- Ser and TIPS mutations exhibited, respectively, 31% and 39% of the fitness benefit revealed by the TIPS-Rr plants. Populations are predicted to reach stable allelic and genotypic frequencies after 20 years of glyphosate selection at which the WT allele is lost and the stable genotypic polymorphism is comprised by 2% of heterozygous TIPS-Rr, 52% of homozygous TIPS-RR and 46% of homozygous P106S-rr. The high inbreeding nature of E. indica is responsible for the expected frequency decrease in the fittest TIPS-Rr in favour of the homozygous TIPS-RR and P106S-rr. Mutated alleles associated with the glyphosate resistance EPSPS single EPSPS Pro-106-Ser and double TIPS mutations confer contrasting fitness benefits to E. indica under glyphosate treatment and therefore are expected to exhibit contrasting evolution rates in cropping systems under recurrent glyphosate selection. grafs., tbls. |
Databáze: | OpenAIRE |
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