Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)

ABSTRACT American slough grass (Beckmannia syzigachne Steud. Fernald) is an annual grass which has developed resistance to acetyl-coenzyme A carboxylase (ACCase) inhibitors, and the major mechanism of resistance is target site based. Target site resistance-conferring mutations may confer pleiotropic...

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Autores principales:	Du,Long, Bai,Shuang, Li,Qi, Qu,Mingjing, Yuan,Guohui, Guo,Wenlei, Wang,Jinxin
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2017
Materias:	ACCase gene mutation Beckmannia syzigachne fitness cost homozygote.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200142
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spelling	oai:scielo:S0718-583920170002001422017-11-09Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)Du,LongBai,ShuangLi,QiQu,MingjingYuan,GuohuiGuo,WenleiWang,Jinxin ACCase gene mutation Beckmannia syzigachne fitness cost homozygote. ABSTRACT American slough grass (Beckmannia syzigachne Steud. Fernald) is an annual grass which has developed resistance to acetyl-coenzyme A carboxylase (ACCase) inhibitors, and the major mechanism of resistance is target site based. Target site resistance-conferring mutations may confer pleiotropic effects on a weed's life cycle. The effects of three American slough grass spontaneous ACCase mutations (Ile1781Leu, Trp2027Cys and Ile2041Asn) on seed germination and viability under different experimental factors had been investigated in this paper. Seeds containing homozygous 1781Leu/Leu ACCase showed a greater germination under salt and osmotic stress, but no fitness variation in optimal experimental conditions. Homozygous 2027Cys/Cys ACCase caused nonsignificant effects on seed germination in optimal experimental conditions, but caused a greater germination after 16 d incubation at 40 °C and 100% RH. Homozygous 2041Asn/Asn ACCase tended to cause nonsignificant effects on seed germination or seed viability. Finally, an obvious population effects on seed germination was observed between six subpopulations, which indicated that fitness assessing should be measured in resistant and susceptible individuals that share a similar genetic background. These findings suggest that the absence of fitness penalty associated with these three homozygous mutant ACCase alleles may be a contributing factor for resistance spread.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.77 n.2 20172017-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200142en10.4067/S0718-58392017000200142
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	ACCase gene mutation Beckmannia syzigachne fitness cost homozygote.
spellingShingle	ACCase gene mutation Beckmannia syzigachne fitness cost homozygote. Du,Long Bai,Shuang Li,Qi Qu,Mingjing Yuan,Guohui Guo,Wenlei Wang,Jinxin Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
description	ABSTRACT American slough grass (Beckmannia syzigachne Steud. Fernald) is an annual grass which has developed resistance to acetyl-coenzyme A carboxylase (ACCase) inhibitors, and the major mechanism of resistance is target site based. Target site resistance-conferring mutations may confer pleiotropic effects on a weed's life cycle. The effects of three American slough grass spontaneous ACCase mutations (Ile1781Leu, Trp2027Cys and Ile2041Asn) on seed germination and viability under different experimental factors had been investigated in this paper. Seeds containing homozygous 1781Leu/Leu ACCase showed a greater germination under salt and osmotic stress, but no fitness variation in optimal experimental conditions. Homozygous 2027Cys/Cys ACCase caused nonsignificant effects on seed germination in optimal experimental conditions, but caused a greater germination after 16 d incubation at 40 °C and 100% RH. Homozygous 2041Asn/Asn ACCase tended to cause nonsignificant effects on seed germination or seed viability. Finally, an obvious population effects on seed germination was observed between six subpopulations, which indicated that fitness assessing should be measured in resistant and susceptible individuals that share a similar genetic background. These findings suggest that the absence of fitness penalty associated with these three homozygous mutant ACCase alleles may be a contributing factor for resistance spread.
author	Du,Long Bai,Shuang Li,Qi Qu,Mingjing Yuan,Guohui Guo,Wenlei Wang,Jinxin
author_facet	Du,Long Bai,Shuang Li,Qi Qu,Mingjing Yuan,Guohui Guo,Wenlei Wang,Jinxin
author_sort	Du,Long
title	Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
title_short	Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
title_full	Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
title_fullStr	Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
title_full_unstemmed	Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)
title_sort	effect of herbicide resistance endowing three accase mutations on seed germination and viability in american slough grass ( beckmannia syzigachne steud. fernald)
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000200142
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Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass ( Beckmannia syzigachne Steud. Fernald)

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