Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (Avena sterilis ssp. ludoviciana)

Herbicide resistance can affect seed germination and the optimal conditions required for seed germination, which in turn may impose a fitness cost in resistant populations. Winter wild oat [Avena sterilis L. ssp. ludoviciana (Durieu) Gillet and Magne] is a serio...

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Autores principales:	Fatemeh Benakashani, Jose L. Gonzalez-Andujar, Elias Soltani
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ecological costs germination models herbicide resistance hydrotime target-site resistance Botany QK1-989
Acceso en línea:	https://doaj.org/article/4cfc972b59cc42f6a08696191ea996ae
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spelling	oai:doaj.org-article:4cfc972b59cc42f6a08696191ea996ae2021-11-25T18:45:40ZDifferences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)10.3390/plants101123502223-7747https://doaj.org/article/4cfc972b59cc42f6a08696191ea996ae2021-10-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2350https://doaj.org/toc/2223-7747Herbicide resistance can affect seed germination and the optimal conditions required for seed germination, which in turn may impose a fitness cost in resistant populations. Winter wild oat [<i>Avena sterilis</i> L. ssp. <i>ludoviciana</i> (Durieu) Gillet and Magne] is a serious weed in cereal fields. In this study, the molecular basis of resistance to an ACCase herbicide, clodinafop-propargyl, in four <i>A. ludoviciana</i> biotypes was assessed. Germination differences between susceptible (S) and ACCase-resistant biotypes (WR<sub>1</sub>, WR<sub>2</sub>, WR<sub>3</sub>, WR<sub>4</sub>) and the effect of Isoleucine-1781-Leucine mutation on germination were also investigated through germination models. The results indicated that WR<sub>1</sub> and WR<sub>4</sub> were very highly resistant (RI > 214.22) to clodinafop-propargyl-contained Isoleucine to Leucine amino acid substitution. However, Isoleucine-1781-Leucine mutation was not detected in other very highly resistant biotypes. Germination studies indicated that resistant biotypes (in particular WR<sub>1</sub> and WR<sub>4</sub>) had higher base water potentials than the susceptible one. This shows that resistant biotypes need more soil water to initiate their germination. However, the hydrotime constant for germination was higher in resistant biotypes than in the susceptible one in most cases, showing faster germination in susceptible biotypes. ACCase-resistant biotypes containing the Isoleucine-1781-Leucine mutation had lower seed weight but used more seed reserve to produce seedlings. Hence, integrated management practices such as stale seedbed and implementing it at the right time could be used to take advantage of the differential soil water requirement and relatively late germination characteristics of ACCase-resistant biotypes.Fatemeh BenakashaniJose L. Gonzalez-AndujarElias SoltaniMDPI AGarticleecological costsgermination modelsherbicide resistancehydrotimetarget-site resistanceBotanyQK1-989ENPlants, Vol 10, Iss 2350, p 2350 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ecological costs germination models herbicide resistance hydrotime target-site resistance Botany QK1-989
spellingShingle	ecological costs germination models herbicide resistance hydrotime target-site resistance Botany QK1-989 Fatemeh Benakashani Jose L. Gonzalez-Andujar Elias Soltani Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
description	Herbicide resistance can affect seed germination and the optimal conditions required for seed germination, which in turn may impose a fitness cost in resistant populations. Winter wild oat [<i>Avena sterilis</i> L. ssp. <i>ludoviciana</i> (Durieu) Gillet and Magne] is a serious weed in cereal fields. In this study, the molecular basis of resistance to an ACCase herbicide, clodinafop-propargyl, in four <i>A. ludoviciana</i> biotypes was assessed. Germination differences between susceptible (S) and ACCase-resistant biotypes (WR<sub>1</sub>, WR<sub>2</sub>, WR<sub>3</sub>, WR<sub>4</sub>) and the effect of Isoleucine-1781-Leucine mutation on germination were also investigated through germination models. The results indicated that WR<sub>1</sub> and WR<sub>4</sub> were very highly resistant (RI > 214.22) to clodinafop-propargyl-contained Isoleucine to Leucine amino acid substitution. However, Isoleucine-1781-Leucine mutation was not detected in other very highly resistant biotypes. Germination studies indicated that resistant biotypes (in particular WR<sub>1</sub> and WR<sub>4</sub>) had higher base water potentials than the susceptible one. This shows that resistant biotypes need more soil water to initiate their germination. However, the hydrotime constant for germination was higher in resistant biotypes than in the susceptible one in most cases, showing faster germination in susceptible biotypes. ACCase-resistant biotypes containing the Isoleucine-1781-Leucine mutation had lower seed weight but used more seed reserve to produce seedlings. Hence, integrated management practices such as stale seedbed and implementing it at the right time could be used to take advantage of the differential soil water requirement and relatively late germination characteristics of ACCase-resistant biotypes.
format	article
author	Fatemeh Benakashani Jose L. Gonzalez-Andujar Elias Soltani
author_facet	Fatemeh Benakashani Jose L. Gonzalez-Andujar Elias Soltani
author_sort	Fatemeh Benakashani
title	Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
title_short	Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
title_full	Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
title_fullStr	Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
title_full_unstemmed	Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)
title_sort	differences in germination of accase-resistant biotypes containing isoleucine-1781-leucine mutation and susceptible biotypes of wild oat (<i>avena sterilis</i> ssp. <i>ludoviciana</i>)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4cfc972b59cc42f6a08696191ea996ae
work_keys_str_mv	AT fatemehbenakashani differencesingerminationofaccaseresistantbiotypescontainingisoleucine1781leucinemutationandsusceptiblebiotypesofwildoatiavenasterilisisspiludovicianai AT joselgonzalezandujar differencesingerminationofaccaseresistantbiotypescontainingisoleucine1781leucinemutationandsusceptiblebiotypesofwildoatiavenasterilisisspiludovicianai AT eliassoltani differencesingerminationofaccaseresistantbiotypescontainingisoleucine1781leucinemutationandsusceptiblebiotypesofwildoatiavenasterilisisspiludovicianai
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Differences in Germination of ACCase-Resistant Biotypes Containing Isoleucine-1781-Leucine Mutation and Susceptible Biotypes of Wild Oat (<i>Avena sterilis</i> ssp. <i>ludoviciana</i>)

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