Identification of Two Mechanisms of Atrazine Resistance in Setaria faberi and Setaria viridis Biotypes

Prado, Rafael De; López-Martínez, Nuria; Gonzalez-Gutierrez, J.

doi:10.1006/pest.2000.2484

Cited by 28 publications

(16 citation statements)

References 17 publications

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“…Our measurements of chlorophyll fluorescence and/or photochemical activity of isolated chloroplasts confirmed this, as we found that PS2 in atrazine-resistant plants of large crabgrass from the railway station Prague-Libeň indeed retains its activity after treatment of leaf discs or chloroplasts with atrazine, though to a lesser degree than in the untreated plants. There were some differences in chlorophyll fluorescence curves as well, similarly to the findings of De Prado et al (1999).…”

Section: Discussionsupporting

confidence: 80%

Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Hamouzová¹,

Salava²,

Soukup³

et al. 2011

Herbicides - Mechanisms and Mode of Action

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Section: Discussionsupporting

confidence: 80%

Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Hamouzová¹,

Salava²,

Soukup³

et al. 2011

Herbicides - Mechanisms and Mode of Action

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“…Seashore paspalum had slightly less translocation than bermudagrass and zoysiagrass for both herbicides after 48 h. In other crops, differences in translocation of triazines has been noted but were not always related to species susceptibility. De Prado et al (1995Prado et al ( , 2000 found similar translocation of atrazine in resistance and susceptible Table 3. De Prado et al (1995Prado et al ( , 2000 found similar translocation of atrazine in resistance and susceptible Table 3.…”

Section: Absorption and Translocation Of 14 C-atrazine And 14 C-simazinementioning

confidence: 82%

“…( Jachetta and Radosevich, 1981;De Prado et al, 1995;Montgomery and Freed, 1961;Sheets, 1961). De Prado et al (2000) found atrazine-resistant biotypes of several foxtail species had greater metabolism than susceptible ones. De Prado et al (2000) found atrazine-resistant biotypes of several foxtail species had greater metabolism than susceptible ones.…”

Section: Roots Shoots Total Roots Shoots Totalmentioning

confidence: 99%

Physiological Basis for Triazine Herbicide Tolerance in Bermudagrass, Seashore Paspalum, and Zoysiagrass

2015

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Atrazine and simazine control weeds in warm‐season turfgrasses, but excessive injury limits applications to sensitive species. The objective of this research was to evaluate the physiological basis for differential tolerances of bermudagrass (Cynodon dactylon (L.) Pers.), seashore paspalum (Paspalum vaginatum Sw.), and zoysiagrass (Zoysia japonica Steud.) to atrazine and simazine. In greenhouse experiments, hierarchical shoot mass reductions from the nontreated by species were: seashore paspalum > bermudagrass > zoysiagrass for atrazine and seashore paspalum > bermudagrass = zoysiagrass for simazine. Atrazine and simazine treatments to soil only or foliar plus soil reduced shoot mass similarly, averaging 45% from nontreated, while foliar‐only treatments reduced shoot mass 22% from the nontreated. Species rank for root absorption of both herbicides after 48 h from high to low was seashore paspalum > bermudagrass > zoysiagrass. All species had acropetal translocation of 14C‐atrazine and 14C‐simazine, but bermudagrass and zoysiagrass translocated ∼10% more 14C than seashore paspalum after 48 h. Hierarchical species rank for nonmetabolized 14C‐atrazine translocation to shoots after 8 h from high to low was seashore paspalum > bermudagrass > zoysiagrass. All species metabolized 14C‐atrazine to hydroxyatrazine and two unidentified metabolites in root and shoots. All species metabolized simazine to hydroxysimazine and two other metabolites in shoots. Seashore paspalum had less total metabolism of 14C‐simazine than bermudagrass and zoysiagrass and produced fewer metabolites in roots. Results suggest bermudagrass and seashore paspalum susceptibility to atrazine is associated with greater absorption and translocation of the parent herbicide to shoots than zoysiagrass. Seashore paspalum susceptibility to injury from simazine is associated with differences in absorption and metabolism from tolerant turfgrasses bermudagrass and zoysiagrass.

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“…Low levels of GST may increase the effectiveness of chemicals such as atrazine when applied at the seedling stage (Hatton et al 1999). Two mechanisms of atrazine resistance were identified in S. faberi growing in corn fields in Spain (De Prado et al 2000). The resistant biotype of S. faberi was 10 times more resistant to atrazine than the susceptible biotype.…”

Section: Herbicide Resistancementioning

confidence: 99%

The Biology of Canadian Weeds. 141. Setaria faberi Herrm.

Nurse¹,

Darbyshire²,

Bertin³

et al. 2009

Can. J. Plant Sci.

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known as giant foxtail, is an annual graminaceous weed that is native to eastern China, has colonized eastern North America and is expanding its range westward. This species is primarily self-pollinated and the only mechanism of reproduction is by seed. Adult plants may reach 2 m in height and produce over 2000 seeds per panicle. Seeds may possess non-deep physiological dormancy when freshly produced, and can form small persistent seed banks. If not controlled, S. faberi populations can cause severe yield reductions in corn and soybean crops. Several herbicides are available to provide chemical control; however, resistance to some modes of action, (ALS, ACCase, and Photosystem II) have been identified in Canada and the United States. Leaves and seeds of this species provide a food source to several species of mammals, birds, and insects.

show abstract

Identification of Two Mechanisms of Atrazine Resistance in Setaria faberi and Setaria viridis Biotypes

Cited by 28 publications

References 17 publications

Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Physiological Basis for Triazine Herbicide Tolerance in Bermudagrass, Seashore Paspalum, and Zoysiagrass

The Biology of Canadian Weeds. 141. Setaria faberi Herrm.

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