Competition by Auxin-Type Herbicides for NAA Binding to Maize Auxin Binding Protein

Mito, Nobuaki; Sori, Ichiro; Miyakado, Masakazu; Tanaka, Seigo

doi:10.1584/jpestics.16.435

Cited by 3 publications

(5 citation statements)

References 4 publications

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“…However, it is a known phenomenon that different structural types of auxin analogs can show different or additional effects dependent on (1) their biokinetic properties and concentration at the site of action, (2) differentially affected signal transduction pathways leading to gene activation (Mito and Bennett 1995), and (3) the plant species and age (Coupland 1994;Sterling and Hall 1997). In contrast to IAA and 2,4-0, quinclorac did not show interaction with a putative auxin-binding protein of maize (Mito et al 1991;Sunohara and Matsumoto 1997), effects on proton excretion by mung bean hypocotyl sections (Mito et al 1990), and changes in membrane potential in barnyardgrass coleoptiles and elongation growth of oat (Avma sativa L.) coleoptiles (N. Lopez-Martinez et al, personal communication). However, this is not necessarily a negative indication because structure-activity relationships of auxins between their affinity for putative binding proteins and physiological action have not hitherto always correlated well (Sterling and Hall 1997).…”

Section: Physiological and Biochemical Effectsmentioning

confidence: 99%

“…However, this is not necessarily a negative indication because structure-activity relationships of auxins between their affinity for putative binding proteins and physiological action have not hitherto always correlated well (Sterling and Hall 1997). Similarly, the activity of dicamba in the test for promoting proton excretion was weak (Mito et al 1991).…”

Section: Physiological and Biochemical Effectsmentioning

confidence: 99%

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Quinclorac belongs to a new class of highly selective auxin herbicides

Großmann¹

1998

Weed sci.

127

105

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Substituted quinolinecarboxylic acids, including quinclorac (BAS 514H), are a new class of highly selective auxin herbicides, which are chemically similar to naturally occurring compounds isolated from plants and soils. Quinclorac is used in rice to control important dicot and monocot weeds, particularly barnyardgrass. The herbicide has also been developed for application in turfgrass areas, spring wheat, and chemical fallow. Quinclorac is readily absorbed by germinating seeds, roots, and leaves and is translocated in the plant both acropetally and basipetally. By mimicking an auxin overdose, quinclorac affects the phytohormonal system in sensitive plants. The compound stimulates the induction of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase activity and thus promotes ethylene biosynthesis. In susceptible dicots, increased levels of ethylene trigger an accumulation of abscisic acid (ABA), which, as part of the intrinsic auxin activity of quinclorac, plays a major role in growth inhibition and the induction of epinasty and senescence. In sensitive grasses, such as barnyardgrass species, large crabgrass, broadleaf signalgrass, and green foxtail, quinclorac leads particularly to an accumulation of tissue cyanide, formed as a co-product during increased ACC and ethylene synthesis. This causes phytotoxicity characterized by the inhibition of root and particularly shoot growth with tissue chlorosis and subsequent necrosis. These effects were not observed in tolerant rice and a resistant biotype of barnyardgrass. No significant differences in uptake, translocation, or metabolism of quinclorac between resistant and sensitive grasses were found. Hence, a target-site-based mechanism of selectivity is suggested. The induction process of the ACC synthase activity plays the primary role in the selective herbicide action of quinclorac. This is a common effect of auxin herbicides and auxins, which lead to the accumulation of cyanide and/or ABA depending on the plant species and tissues, the compound concentration in the tissue, and their biological activity.

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Section: Physiological and Biochemical Effectsmentioning

confidence: 99%

Section: Physiological and Biochemical Effectsmentioning

confidence: 99%

Quinclorac belongs to a new class of highly selective auxin herbicides

Großmann¹

1998

Weed sci.

127

105

View full text Add to dashboard Cite

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“…These activities can be detected rapidly (within 5-15 min after treatment) and are considered to be indicators of auxin action. Numerous studies have shown that auxinic herbicides such as 2,4-D, 3,6-dichloro-2-methoxybenzoic acid, and 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acid compete with IAA for binding to an auxin receptor on the plasma membrane (Mito et al, 1991), increase nucleic acid levels (Malhorta and Hanson, 1970;Arnold and Nalewaja, 1971;Chen et al, Plant Physiol. Vol.…”

Section: -9379mentioning

confidence: 99%

“…11 2, 19961972), stimulate respiration (Koo et al, 1991b), and/or acidify the growth medium (Mito et al, 1990b). However, quinclorac neither binds to the putative auxin-binding protein of maize (Zea mays) (Mito et al, 1991) nor acidifies the growth medium of mung bean tissues (Mito et al, 1990b). Furthermore, quinclorac does not increase RNA content or respiration rates in barnyardgrass (Koo et al, 1991b).…”

Section: -9379mentioning

confidence: 99%

3,7-Dichloroquinolinecarboxylic Acid Inhibits Cell-Wall Biosynthesis in Maize Roots

Koo¹,

Neal²,

DiTomaso³

1996

Plant Physiology

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The mode of action of the herbicide 3,7-dichloroquinolinecar-boxylic acid (quinclorac) was examined by measuring incorporation of [14C]glucose, [14C]acetate, [3H]thymidine, and [3H]uridine into maize (Zea mays) root cell walls, fatty acids, DNA, and RNA, respectively. Among the precursors examined, 10 [mu]M quinclorac inhibited [14C]glucose incorporation into the cell wall within 3 h. Fatty acid and DNA biosynthesis were subsequently inhibited, whereas RNA biosynthesis was unaffected. In contrast to the cellulose synthesis inhibitor 2,6-dichlorobenzonitrile, quinclorac strongly inhibited cellulose and a hemicellulose fraction presumed to be glucuronoarabinoxylan. However, the synthesis of (1–>3),(1–>4)-β-D-glucans was only slightly inhibited. The degree of inhibition was time- and dose-dependent. By 4 h after treatment, the concentration that inhibited [14C]glucose incorporation into the cell wall, cellulose, and the sensitive hemicellulose fraction by 50% was about 15, 5, and 20 [mu]M, respectively. Concomitant with an inhibition of [14C]glucose incorporation into the cell wall, quinclorac treatment led to a marked accumulation of radioactivity in the cytosol. The increased radioactivity was found mostly in glucose and fructose. However, total levels of glucose, fructose, and uridine diphosphate-glucose were not changed greatly by quinclorac. These data suggest that quinclorac acts primarily as a cell-wall biosynthesis inhibitor in a susceptible grass by a mechanism that is different from that of 2,6-dichlorobenzonitrile.

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“…In corn plants (Zea mays), it was observed that quinclorac did not bind to ABP1 (Mito et al, 1991). Also, quinclorac did not acidify the growth medium of mung bean (Vigna radiata) tissues (Mito et al, 1990).…”

Section: Auxinic Effect (Including the Production Of Cyanate)mentioning

confidence: 99%

Integrative Theory of the Mode of Action of Quinclorac: Literature Review1

Fipke

Vidal

2016

Planta daninha

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-Quinclorac is a systemic herbicide absorbed by germinating seeds, roots and leaves of seedlings. It is a selective compound for crops such as rice, canola, barley, corn, sorghum, and pasture. Quinclorac can be used to control various monocots and dicotyledonous weed species. The biochemical function of this herbicide in the plant has intrigued scientists for nearly four decades. The objectives of this review are to present evidence of three hypotheses on the biochemical functioning of quinclorac and to propose an integrative mode of action. The first theory on the mode of action of quinclorac is supported by evidence of inhibition of incorporation of C 14 -glucose into cellulose and hemicellulose, thus, affecting the cell wall synthesis. The second hypothesis suggests that quinclorac acts as an auxin in broadleaved weed species. In grass species, however, this herbicide appears to stimulate the activity of the 1-aminocyclopropane-1-carboxylate synthase enzyme and, subsequently, to increase the ethylene production; also, it seems to increase the cyanide acid content to phytotoxic levels. A third hypothesis to explain the harmful effect in some plant species is the formation of reactive oxygen species (ROS). Apparently, these processes are not mutually exclusive; therefore, an integrative theory for the action of quinclorac is suggested. It is theorized that the aforementioned biochemical activities are interconnected and can be the phytotoxic backbone to explain the herbicidal effect depending on the plant species and the plant growth stage, among other factors.Keywords: cellulose biosynthesis-inhibitor, cyanide, auxinic herbicide, reactive oxygen species. Palavras-chave: inibidor da síntese de celulose, herbicida auxínico, cianeto, espécies reativas de oxigênio. RESUMO

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Competition by Auxin-Type Herbicides for NAA Binding to Maize Auxin Binding Protein

Cited by 3 publications

References 4 publications

Quinclorac belongs to a new class of highly selective auxin herbicides

Quinclorac belongs to a new class of highly selective auxin herbicides

3,7-Dichloroquinolinecarboxylic Acid Inhibits Cell-Wall Biosynthesis in Maize Roots

Integrative Theory of the Mode of Action of Quinclorac: Literature Review1

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