Effect of Alachlor, Propachlor, and Prynachlor on GA<sub>3</sub>-induced Production of Protease and α-Amylase

Rao, V. Sivaji; Duke, W. B.

doi:10.1017/s0043174500063062

Cited by 15 publications

(8 citation statements)

References 13 publications

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“…Numerous studies have been conducted to determine the mechanism of action of the a -chloroacetamides. Studies of photosynthesis (3,16), respiration (9,16,19), a-amylase synthesis (5,15,18,23), RNA synthesis (15), protein syn thesis (7,12,15), and lipid synthesis (6,23,24) have failed, however, to elucidate the primary mechanism of action.…”

Section: Introductionmentioning

confidence: 99%

“…Although studies with certain a-chloroacetamides suggest they are inhibitors of protein synthesis (7,12,15), Pillai et al (17) found that, with metolachlor, leucine incorporation into protein was inhibited only at concentrations of 1 X 10" 4 M and higher. Inhibition of a-amylase synthesis in de-embryonated barley (Hordeum vulgare L.) seed by CDAA (N,Ndiallyl -2 -chloroacetamide) (15) and alachlor (5,18) has been reported. Using seed completely freed of contaminating microorganisms, however, Diner 3 found that a-amylase synthesis in de-embryonated 'Himalaya' barley was inhibited by alachlor and metolachlor only at concentrations in excess of 1 X 10' 3 M.…”

Section: Introductionmentioning

confidence: 99%

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Metolachlor and Alachlor Effects on Membrane Permeability and Lipid Synthesis

Mellis¹,

Pillai²,

Davis³

et al. 1982

Weed sci.

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Metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] at 1 × 10−5and 1 × 10−4M increased the leakage of previously absorbed,32P-labeled orthophosphate from the roots of onion (Allium cepaL.), a susceptible species, by 14 and 41 times the control values, respectively. A significant amount of32P leaked from the roots of the moderately susceptible species, cotton (Gossypium hirsutumL. ‘DPL 61′) and cucumber (Cucumis sativusL. ‘Ashley′), whereas no significant loss of32P occurred from two tolerant species, soybean [Glycine max(L.) Merr. ‘Bragg′] and corn (Zea maysL. ‘Pioneer 3369A′). At either 1 × 10−7or 1 × 10−6M, 1,8-naphthalic anhydride (NA) prevented32P leakage from onion roots in the presence of 1 × 10−5M metolachlor. High concentrations of NA [0.1% (w/v) suspensions], however, promoted32P leakage and did not protect onion roots from the leakage induced by high concentrations (1 × 10−4M) of metolachlor. Neither metolachlor nor alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide], at 1 × 10−4M, inhibited the uptake of acetate-2-14C or malonic acid-2-14C into excised cotton root tips or the incorporation of the precursors into lipids. Similarly, neither herbicide inhibited phospholipid synthesis by cotton root tips. Incorporation of14C-choline chloride into phosphatidylcholine was not significantly inhibited by metolachlor.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metolachlor and Alachlor Effects on Membrane Permeability and Lipid Synthesis

Mellis¹,

Pillai²,

Davis³

et al. 1982

Weed sci.

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“…It was suggested that these herbicides may act as repressors for gene action preventing the normal expression of the hormonal effect of GA 3 through the synthesis of DNA-dependent RNA. This was confirmed when higher levels of GA 3 overcame alachlor inhibition by removing the repressor effect [42].…”

Section: Hydrolytic Enzyme Activitiesmentioning

confidence: 78%

“…It was reported that propaclor inhibited the gibberellic acid (GA 3 ) induced production of αamylase in barley seeds [40]. Similarly, alachlor, propachlor and prynachlor were found to inhibit α-amylase as well as protease synthesis in barley seeds [41,42]. It was suggested that these herbicides may act as repressors for gene action preventing the normal expression of the hormonal effect of GA 3 through the synthesis of DNA-dependent RNA.…”

Section: Hydrolytic Enzyme Activitiesmentioning

confidence: 99%

Herbicides — A Double Edged Sword

El-Hadary¹,

Chung²

2013

Herbicides - Current Research and Case Studies in Use

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developing countries due to their low price and the little information available about them. References have been included that cover a long era of research concerning herbicide application in order to include those prohibited herbicides. "lso, references were included that focus on research that was conducted in under-and developing countries. . . HerbicidesThis chapter will discuss different herbicide groups, classification, selectivity, interference with metabolic processes and hazardous action upon crop plants. "lso, the relation to naturally occurring phenomena, such allelopathy and future prospects of genetic engineering in the production of plant herbicides themselves, will be mentioned.

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“…It has been shown that interactions between site of absorption, herbicide placement and herbicide-soil relationships influence the selectivity of alachlor (Eshel, 1969;Jordan & Harvey, 1980). Rao & Duke (1976) found that early seedling development is inhibited by the acetanilides through root exposure, shoot exposure, or a combination of shoot and seed exposure, depending on the plant species. The main site at which sunflower absorbs soilapplied alachlor is apparently unknown.…”

mentioning

confidence: 99%