Biochemical and metabolic changes in plants induced by chlorophenoxy herbicides

Penner, Donald; Ashton, Floyd M.

doi:10.1007/978-1-4615-8410-0_3

Cited by 11 publications

(8 citation statements)

References 198 publications

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“…An extensive literature has been published on the agronomic, physiological and biochemical effects of 2,4-D on plant processes (Klingman, 1947;Derscheid, 1948;Blackman, 1952;Hilton, Jansen & Hull, 1963;Audus, 1964;Penner & Ashton, 1966;Moreland, 1967;Casida & Lykken, 1969;Saghir & Aquiqullah, 1970). One of the major effects observed following 2,4-D application is a rapid * Paper No.…”

Section: Introductionmentioning

confidence: 99%

Amino‐acid Composition of Grain Protein From Wheat and Barley Treated With 2,4‐d*

Pellett

Saghir

1971

Weed Research

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Wheat and barley treated with the butoxyethyl ester of 2,4-D at 2, 4 and 8 kg/ha (a.e.) at the jointing stage of growth were analysed for the amino-acid composition of the protein of the grain. A slight decrease in the threonine and arginine, and an increase in the proline content of wheat protein were observed. In barley, only melhionine showed a slight increase as a re.sult of herbicide treatment. No significant difference in the amino-acid composition of the protein was found in grain from hand-weeded and unweeded plots. High doses of 2,4-D may increase the protein percentage, but have only a very minor effect on the amino-acid composition of the protein.Composition en amino-acides de la protiine du grain de bU et d'orge traitis au 2,4-D Resume. Du bl^ et de I'orge traites avee Tester butoxy^thylique du 2,4-D aux doses de 2,4 et 8 kg/ha (e.a.), au stade de la montre ont H^ analyses pour determiner la composition en amino-acides de la protiine du grain. Une 16gere diminution de la teneur en thrtonine et en arginine et un accroissement de la teneur en proline de la protiine du bl^ furent observes. Dans I'orge, la mithionine seule, montra un liger accroissement & la suite du traitement herbicide. 11 ne fut pas trouvi de differences dans !a composition en aminoacides dc la prot^inc des grains issus de parcelles d^sherbdcs k la main ou non d^sherbdcs. Des doses dlev^es de 2,4-D peuvent aecroitre le pourcentage de protiine, mais elles n'ont qu'un effet trfe faible sur sa composition en amino-acides. Proteinquditdt von Weizen-und Gerstekorn in Abhangigkeit von 2,^-D-Behandlung

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Section: Introductionmentioning

confidence: 99%

Amino‐acid Composition of Grain Protein From Wheat and Barley Treated With 2,4‐d*

Pellett

Saghir

1971

Weed Research

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“…The severity may be further promoted by factors that enhance senescence, i.e. short photoperiods and/or blue-biased far-red light (17)(18)(19)20) and exposure to auxin-analog herbicides (12,13 promotive of ethylene generation and/or senescence (9,10,22,27).…”

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confidence: 99%

Ethylene-Induced Chlorosis in the Pathogenesis of Bipolaris sorokiniana Leaf Spot of Poa pratensis

Hodges

Coleman²

1984

Plant Physiol.

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Subjecting inoculated leaves of intact plants to a controlled atmospheric-environmental system with an atmospheric pressure of 233 millibars and 02 and CO2 parti pressures adjAsted to approximately that of normal ambient pressure during infection and disease development prevented most midvein chlorosis and complete chlorosis, but did not prevent necrotic lesion or chlorotic halo development. Under the hypobaric conditions, chlorophyll loss during disease development was reduced to 22% compared with controls at 96 hours. The observations suggest that ethylene may function late in pathogenesis of this host-pathogen interaction and is responsible for much of the chlorophyll loss after its maximum production at 48 hours.

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“…The increase in disease severity on attached leaves in response to the herbicides is unknown; however, 2,4-D decreases total soluble sugars in P. pratensis (Madsen and Hodges 1983a), and the decrease has been correlated with larger lesions (Robinson and Hodges 1977). The increase in production of ethylene in response to chlorophenoxy herbicides (Penner and Ashton 1966) and in response to infection by B. sorokiniana (Hodges 1990;Hodges and Coleman 1984) also contributes to increased disease severity. Factors that enhance disease severity probably also enhance the rate of decline of infected leaf tissue; this action may permit more aggressive hyphal growth and sporulation.…”

Section: Discussionmentioning

confidence: 93%

Vegetative growth and sporulation of Bipolaris sorokiniana on infected leaves of Poa pratensis exposed to postemergence herbicides

Hodges¹

1992

Can. J. Bot.

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HODGES, C. F. 1992. Vegetative growth and sporulation of Bipolaris sorokiniana on infected leaves of Poapratensis exposed to postemergence herbicides. Can. J. Bot. 70: 568-570. Poa pratensis was exposed to the postemergence herbicides 2,4-D, MCPP, and dicamba at concentrations of M applied to the soil surface. The four youngest leaf blades were inoculated with Bipolaris sorokiniana and subsequently detached to determine the effect of the herbicides on vegetative hyphal growth and sporulation on the leaf-blade tissue. Hyphal growth from infected leaf disks cut from detached leaves was stimulated by 2,4-D and dicamba. MCPP did not affect hyphal growth. All herbicides increased sporulation by B. sorokiniana on the detached leaves. Increases in sporulation did not differ between 2,4-D and MCPP. Dicamba induced the heaviest sporulation on leaf blades. Key words: dicamba, MCPP, mecoprop, 2-methoxy-3,6-dichlorobenzoic acid, 2(2-methyl-4-chlorophenoxy)propionic acid, 2,4-dichlorophenoxyacetic acid. HODGES, C. F. 1992. Vegetative growth and sporulation of Bipolaris sorokiniana on infected leaves of Poa pratensis exposed to postemergence herbicides. Can. J. Bot. 70 : 568-570. Des plantes de Poa pratensis ont Ct C exposCs aux herbicides de post-tmergence 2,4-D, MCPP et dicamba, i des concentrations de M appliquies a la surface du sol. Les lames des quatre feuilles les plus jeunes ont ttC inocultes avec le Bipolaris sorokiniana et detachies subsCquemment pour dtterminer I'effet des herbicides sur la croissance vCgCtative des hyphes et la sporulation sur la lame foliaire. La croissance des hyphes a partir de disques foliaires infect& prClevBs sur des feuilles ditachCes, est stimulte par le 2,4-D et le dicarnba. Le MCPP n'a pas affect6 la croissance des hyphes. Tous les herbicides augmentent la sporulation par le B. sorokiniana sur feuilles dCtachCes. Les augmentations de la sporulation ne sont pas diffkrentes entre le MCPP et le 2,4-D. Le dicarnba induit la sporulation la plus forte sur lames foliaires.Mots clis : dicamba, MCPP, mCcoprop, acide 2-methoxy-3,6-dichlorobenzoique, acide 2(2-mCthyl-4-ch1orophCnoxy)propionique, acide 2,4-dichlorophCnoxyacCtique.[Traduit par la ridaction]

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Biochemical and metabolic changes in plants induced by chlorophenoxy herbicides

Cited by 11 publications

References 198 publications

Amino‐acid Composition of Grain Protein From Wheat and Barley Treated With 2,4‐d*

Amino‐acid Composition of Grain Protein From Wheat and Barley Treated With 2,4‐d*

Ethylene-Induced Chlorosis in the Pathogenesis of Bipolaris sorokiniana Leaf Spot of Poa pratensis

Vegetative growth and sporulation of Bipolaris sorokiniana on infected leaves of Poa pratensis exposed to postemergence herbicides

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