Fluorometric Determination of<u>in vivo</u>p-Halohydroxybenzonitrile Detoxification Kinetics in<u>Zea Mays</u>

Dekker, Jack; Burmester, Ronald

doi:10.1080/00032718808059892

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…In many cases sufficient variability in herbicide response among plant populations exists from which to select improved lines (Boerboom e? aZ., 1991;Dekker and Burmester, 1988;Hartwig, 1987;Tranel and Dekker, 1992), but in other instances the amount has been insufficient (Kibite and Harker, 1991). Traditional plantbreeding methodologies (with resistance derived from weedy sources) have produced HRCs with resistance to s-triazines in rapeseed (Beversdorf and Hume, 1984) and lettuce (Mallory-Smith et al, 1993), with others coming in the future.…”

Section: B T R a D I T I O N A L Plant-breeding Techniquesmentioning

confidence: 99%

Herbicide-Resistant Field Crops

Dekker

Duke

1995

Advances in Agronomy

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This chapter reviews information about how crop plants resist herbicides and how resistance is selected for in plants and surveys specific herbicide-resistant crops by chemical family. The discussion in the chapter includes HRCs derived from both traditional and biotechnological selection methodologies. Plants avoid the effects of herbicides they encounter by several different mechanisms. These mechanisms can be grouped into two categories: those that exclude the herbicide molecule from the site in the plant where they induce the toxic response and those that render the specific site of herbicide action resistant to the chemical. The chapter presents herbicide-resistant crops by the herbicide chemical family-such as, triazine, acetolactate synthatase, acetyl-CoA carboxylase, glyphosate, bromoxynil, phenoxycarboxylic acids, and glufosinate. Resistant crops are listed in the chapter regardless of whether they have been commercialized or were developed for experimental purposes only, and are provided regardless of their "success" as resistant plants. DisciplinesAgricultural Science | Agriculture | Agronomy and Crop Sciences | Weed Science CommentsThis article is

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Section: B T R a D I T I O N A L Plant-breeding Techniquesmentioning

confidence: 99%

Herbicide-Resistant Field Crops

Dekker

Duke

1995

Advances in Agronomy

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“…Chlorphyll fluorescence has been widely used in probing plant stress responses and herbicide detoxification (reviewed in Bolhar-Nordenkampf, 1989;Papageorgiou, 1975;Schrelber, 1983;Voss et al, 1984;Ducruet et al, 1984;Richard et al, 1983;Dekker and Burmester, 1988;Bohme et al, 1981;Pfister and Arntzen, 1979;Cadahia et al, 1982). It is a rapid, non-destructive, intrinsic probe of photosystem II electron transport in the chloroplast.…”

Section: Introductionmentioning

confidence: 99%

Weedy adaptation in Setaria spp: genetic diversity, population genetic structure and variation in herbicide resistance

Wang

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Setaria spp. (foxtails) comprise a group of serious cosmopolitan weeds. Current control strategies for these species are flawed due to the heavy reliance on herbicide use and the associated problems. An improved weed management system can only be developed after weedy adaptation is understood, through the studies of weed population biology and physiology. Investigations of Setaria's genetic diversity, population genetic structure, and variation in herbicide resistance represent the initial steps toward this goal. Isozyme analyses indicated that, foxtails, like other introduced, self-pollinating weeds, had low genetic variation but strong population genetic differentiation. At the species level, S. geniculata (knotroot foxtail, abbreviated herein as Krft) had the greatest heterozygosity, followed by S. viridis (green foxtail, or Gnft), Sglauca (yellow foxtail, or Yeft), and S. faberii (giant foxtail, or Gift). Knotroot foxtail had the strongest population differentiation followed by Yeft and Gnft. Little isozyme polymorphism was found in Gift and no further analysis was conducted for the species. There were geographic patterns in the genetic diversity of individual species. A north-south gradient occurred to Gnft and Krft populations in North America. Yellow foxtail populations formed three distinctive clusters: Asian, European, and North American cluster. Green and Yeft populations in Iowa had greater diversity than those from the rest of North America. Such population genetic structures likely resulted from founder effects, multiple introductions, and natural selection. Some populations, sampled on various geographic scales, were genetically well differentiated. Other populations from diverse ecological environments shared identical genotypes. Phylogenetically, Gnft and foxtail millet were likely the same species and several Gnft varieties appeared to be genetically identical. A high degree of genetic similarity was also shared between Krft and Yeft. Foxtails had inter-and intraspecific variation in atrazine and metolachlor resistance. The resistance mechanisms (quantitative or qualitative) to these two herbicides may be different in yellow, green and giant foxtail. Glutathioneherbicide conjugation mediated by glutathione S-transferase was not the primary detoxification mechanism for these herbicides in these foxtail species.

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Fluorometric Determination ofin vivop-Halohydroxybenzonitrile Detoxification Kinetics inZea Mays

Cited by 2 publications

References 6 publications

Herbicide-Resistant Field Crops

Herbicide-Resistant Field Crops

Weedy adaptation in Setaria spp: genetic diversity, population genetic structure and variation in herbicide resistance

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