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Artículo

A double EPSPS gene mutation endowing glyphosate resistance shows a remarkably high resistance cost

Han, Heping; Vila Aiub, Martin MiguelIcon ; Jalaludin, Adam; Yu, Qin; Powles, Stephen B.
Fecha de publicación: 12/2017
Editorial: Wiley Blackwell Publishing, Inc
Revista: Plant, Cell and Environment
ISSN: 0140-7791
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Agricultura

Resumen

A novel glyphosate resistance double point mutation (T102I/P106S, TIPS) in the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene has been recently identified for the first time only in the weed species Eleusine indica. Quantification of plant resistance cost associated with the TIPS and the often reported glyphosate resistance single P106S mutation was performed. A significant resistance cost (50% in seed number currency) associated with the homozygous TIPS but not the homozygous P106S EPSPS variant was identified in E. indica plants. The resistance cost associated with the TIPS mutation escalated to 85% in plants under resource competition with rice crops. The resistance cost was not detected in nonhomozygous TIPS plants denoting the recessive nature of the cost associated with the TIPS allele. An excess of 11-fold more shikimate and sixfold more quinate in the shikimate pathway was detected in TIPS plants in the absence of glyphosate treatment compared to wild type, whereas no changes in these compounds were observed in P106S plants when compared to wild type. TIPS plants show altered metabolite levels in several other metabolic pathways that may account for the expression of the observed resistance cost.
Palabras clave: Aromatic Amino Acids , Glyphosate Resistance Cost , Pro-106-Ser , Tips
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/56334
DOI: https://dx.doi.org/10.1111/pce.13067
URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/pce.13067
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Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Han, Heping; Vila Aiub, Martin Miguel; Jalaludin, Adam; Yu, Qin; Powles, Stephen B.; A double EPSPS gene mutation endowing glyphosate resistance shows a remarkably high resistance cost; Wiley Blackwell Publishing, Inc; Plant, Cell and Environment; 40; 12; 12-2017; 3031-3042
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