Differential Tolerance of Corn Genotypes to DPX-M6316

Eberlein, Charlotte V.; Rosow, Kathleen M.; Geadelmann, J. L.; Openshaw, S. J.

doi:10.1017/s0043174500072581

Cited by 42 publications

(28 citation statements)

References 17 publications

(36 reference statements)

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“…Nicosulfuron in agricultural production has been widely used as a postemergence herbicide in maize. Many studies have demonstrated that maize cultivars differ in their sensitivity to nicosulfuron (Eberline et al 1989, Wang et al 2016. Therefore, the harm that nicosulfuron causes to maize crops should be further studied in order to evaluate its impact on different corn varieties, a crucial issue in maize production that urgently needs to be addressed.…”

Section: Discussionmentioning

confidence: 99%

Photosynthesis and physiology responses of paired near-isogenic lines in waxy maize (Zea mays L.) to nicosulfuron

Wang¹,

Zhong²,

Lv³

et al. 2018

Photosynt.

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Nicosulfuron is a post-emergence herbicide used for weed control in fields of maize (Zea mays L.). We used a pair of nearly isogenic inbred lines, SN509-R (nicosulfuron-resistant) and SN509-S (nicosulfuron-sensitive), to study the effect of nicosulfuron on waxy maize seedling. After the nicosulfuron treatment, net photosynthetic rate, stomatal conductance, transpiration rate, leaf maximum photochemical efficiency of PSII, photochemical quenching of chlorophyll fluorescence, and the actual photochemical efficiency of PSII were significantly lower in SN509-S than those of SN509-R, contrary to intercellular CO 2 concentration, stomatal limitation, and nonphotochemical quenching. Compared to SN509-R, antioxidant enzyme activities in SN509-S decreased significantly in response to the nicosulfuron treatment, while SN509-S exhibited an increased malondialdehyde content, which was associated with lower antioxidant enzyme activities. These results collectively suggest that the nicosulfuron-resistance mechanism was associated with photosynthetic rate, reactive oxygen species metabolism, and protective mechanisms.

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Section: Discussionmentioning

confidence: 99%

Photosynthesis and physiology responses of paired near-isogenic lines in waxy maize (Zea mays L.) to nicosulfuron

Wang¹,

Zhong²,

Lv³

et al. 2018

Photosynt.

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“…Safeners have been shown to enhance the activity of P450 monooxygenases (Kreuz et al, 1996). Differential sensitivity in field corn to P450-metabolized herbicides has been associated with different rates of metabolism (Bunting et al, 2004;Eberlein et al, 1989;Hinz and Owen, 1996). Previously, Bunting et al (2004) reported increased tolerance in field corn hybrids and increased metabolism of foramsulfuron when the herbicide was applied with the safener, isoxadifen-ethyl.…”

Section: Discussionmentioning

confidence: 99%

Genetic Basis for Varied Levels of Injury to Sweet Corn Hybrids from Three Cytochrome P450-metabolized Herbicides

Pataky¹,

Meyer²,

Bollman³

et al. 2008

J. Amer. Soc. Hort. Sci.

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Some sweet corn (Zea mays L.) hybrids and inbreds can be severely injured or killed after postemergence applications of certain P450-metabolized herbicides. Consequently, existing hybrids are regularly evaluated for tolerance to new herbicides, and new hybrids are evaluated for tolerance to existing herbicides. In 2005 and 2006, the University of Wisconsin Cooperative Extension Service coordinated 12 trials in six states in which a total of 149 sweet corn hybrids were evaluated for tolerance to three cytochrome P450-metabolized herbicides: nicosulfuron, foramsulfuron, and mesotrione. Hybrid responses differed substantially within and among locations. The objective of this study was to determine if alleles affecting herbicide sensitivity (e.g., cytochrome P450 alleles) were associated with differences in levels of injury to sweet corn hybrids in these trials. Based on responses of F2 progeny to nicosulfuron, foramsulfuron, and mesotrione, 95 hybrids were classified as homozygous for alleles conditioning herbicide tolerance; 47 hybrids were classified as heterozygous with one allele each conditioning tolerance and sensitivity; and two hybrids were classified as homozygous for alleles conditioning sensitivity. When trial mean levels of injury after applications of mesotrione, nicosulfuron, and foramsulfuron in the herbicide trials were above 1%, 4%, and 5%, respectively, the response of the three genotypic classes of hybrids followed a consistent pattern. Homozygous-sensitive hybrids were injured most severely and often were killed by the two acetolactate synththase-inhibiting herbicides, nicosulfuron and foramsulfuron. Heterozygous hybrids had an intermediate response to all three herbicides that was more similar to homozygous-tolerant hybrids than homozygous-sensitive hybrids; however, injury to heterozygous hybrids was 1.5 to 2.3 times greater and significantly (P < 0.05) different from homozygous-tolerant hybrids based on t tests of group means and comparisons of predicted values from regressions of genotypic means on trial means. Based on responses of the 149 hybrids in this trial, the potential for and level of crop injury from use of nicosulfuron, mesotrione, and foramsulfuron on any specific sweet corn hybrid is conditioned largely by alleles at a single locus.

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“…For instance, a differential tolerance of corn genotypes has been recently described toward acetochlor (2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methyl-phenyl)acetamide ; Landi et al ., 1990) and to the sulfonylureas DPX-M6316 (3-((((4-methoxy-6-methyl-1,3,5triazin-2-yl)amino)carbonyl)amino) sulfonyl)2thiophene carboxyl acid ; Eberlein et al ., 1989), chlorsulfuron (2-chloroN-(((4-methoxy-6methyl-1,3,5triazin-2-yl)amino)carbonyl) -benzene sulfonamide : Landi et al ., 1989) primisulfuron (2-(3-(4,6-bis(difluoromethoxy)pyrimidin-2-yl)ureidosulfonyl) benzoic acid methyl ester ; Harms et al ., 1990), and nicosulfuron (2-(((((4,6-dimethoxy-2-pyrimidinyl) amino)carbonyl)amino)sulfonyl) N,Ndimethyl-3-pyridine carboxamide ; Stall & Bewick, 1992) . On the other hand, a differential response to glyphosate has been reported among weeds (Duncan & Weller, 1987) .…”

Section: Introductionmentioning

confidence: 99%

Glyphosate tolerance in maize (Zea mays L.). 1. Differential response among inbred lines

Forlani

Racchi

1995

Euphytica

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Variation in susceptibility to the safe broad-spectrum herbicide glyphosate was investigated in maize . Eleven inbred lines, grown in a growth chamber, were evaluated for their tolerance to the herbicide at 2 .4 mM (0 .2 kg a .i . in 400 1 ha ' of water) . Following treatment with glyphosate at the three-leaf stage, significant variation in damage, expressed as visual injury ratings scored 7, 14 and 21 days after the application of the herbicide, was found . Effects on dry weight and shoot height were consistent with visual scores and the carbon-exchange rate was found to be a sensitive index of differential injury .Biochemical characterization of 5-enol-pyruvyl-shikimate-3-phosphate (EPSP) synthase, the main target of the herbicide, ruled out the possibility that this differential susceptibility was due to variations in the sensitivity of the enzyme. On the contrary, a positive correlation was found between in vivo tolerance and EPSP synthase levels, measured at different stages during seedling growth . This result suggests that a naturally occurring difference in EPSP synthase levels in the tissues may contribute to the differential response observed in vivo in maize inbreds .Abbreviations : CER -carbon-exchange rate, EPSP -5-enol-pyruvyl-shikimate-3-phosphate, ID50 -concentration causing 50% inhibition

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Differential Tolerance of Corn Genotypes to DPX-M6316

Cited by 42 publications

References 17 publications

Photosynthesis and physiology responses of paired near-isogenic lines in waxy maize (Zea mays L.) to nicosulfuron

Photosynthesis and physiology responses of paired near-isogenic lines in waxy maize (Zea mays L.) to nicosulfuron

Genetic Basis for Varied Levels of Injury to Sweet Corn Hybrids from Three Cytochrome P450-metabolized Herbicides

Glyphosate tolerance in maize (Zea mays L.). 1. Differential response among inbred lines

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