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Authors Du, L; Bai, S; Li, Q; Qu, MJ; Yuan, GH; Guo, WL; Wang, JX
Author Full Name Du, Long; Bai, Shuang; Li, Qi; Qu, Mingjing; Yuan, Guohui; Guo, Wenlei; Wang, Jinxin
Title Effect of herbicide resistance endowing three ACCase mutations on seed germination and viability in American slough grass (Beckmannia syzigachne Steud. Fernald)
Source CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
Language English
Document Type Article
Author Keywords ACCase gene mutation; Beckmannia syzigachne; fitness cost; homozygote
Keywords Plus LOLIUM-RIGIDUM POPULATION; ACETYL-COENZYME; ARABIDOPSIS-THALIANA; ALOPECURUS-MYOSUROIDES; CARBOXYLASE INHIBITORS; ECOLOGICAL FITNESS; MOLECULAR-BASES; SITE MUTATIONS; BLACK-GRASS; COSTS
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 degrees 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 Address [Bai, Shuang; Li, Qi; Yuan, Guohui; Guo, Wenlei; Wang, Jinxin] Shandong Agr Univ, Coll Plant Protect, Tai An 271018, Shandong, Peoples R China; [Du, Long; Qu, Mingjing] Shandong Peanut Res Inst, Qingdao 266100, Shandong, Peoples R China
Reprint Address Wang, JX (corresponding author), Shandong Agr Univ, Coll Plant Protect, Tai An 271018, Shandong, Peoples R China.
E-mail Address wangjx@sdau.edu.cn
Funding Agency and Grant Number National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31471787]; Special Fund for Agroscientific Research in the Public Interest [201303031]
Funding Text This research was supported by the National Natural Science Foundation of China (31471787) and the Special Fund for Agroscientific Research in the Public Interest (201303031). The authors thank all the workers for assistance in conducting this research.
Times Cited 4
Total Times Cited Count (WoS, BCI, and CSCD) 4
Publisher INST INVESTIGACIONES AGROPECUARIAS
Publisher City CHILLAN
Publisher Address CENTRO REGIONAL DE INVESTIGACION QUILAMAPU, CASILLA 426, CHILLAN, 00000, CHILE
ISSN 0718-5839
29-Character Source Abbreviation CHIL J AGR RES
ISO Source Abbreviation Chil. J. Agric. Res.
Publication Date APR-JUN
Year Published 2017
Volume 77
Issue 2
Beginning Page 142
Ending Page 149
Digital Object Identifier (DOI) 10.4067/S0718-58392017000200142
Page Count 8
Web of Science Category Agriculture, Multidisciplinary; Agronomy
Subject Category Agriculture
Document Delivery Number FE7CZ
Unique Article Identifier WOS:000408366500006
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