The Microbiological Degradation of Aromatic Compounds

Evans, William C.

doi:10.1099/00221287-32-2-177

Cited by 109 publications

(41 citation statements)

References 23 publications

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“…One was added to each value since zero leaf area values were not uncommon for the early growth periods and the logarithm of zero is undefined. For additional details about growth analysis equations see Radford (1967) or Evans (1972).…”

Section: Inhibition Of Radicle Growth and Subsequent Seedlingmentioning

confidence: 99%

Effects of ferulic acid, an allelopathic compound, on leaf expansion of cucumber seedlings grown in nutrient culture

Blum

Dalton

1985

J Chem Ecol

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Cucumber seeds and seedlings at various ages (7-19 days old) were treated with a single treatment or multiple treatments (at 2-day intervals) of ferulic acid in nutrient culture. Ferulic acid treatments of cucumber seeds during stages of germination and radicle growth did not significantly reduce subsequent seedling growth. Ferulic acid treatments to seedlings reduced leaf area, leaf expansion, and dry weight of cucumber seedlings. Pretreatment of seeds and seedlings with 0.1 or 0.2 mM ferulic acid did not modify the effects of a single 1 mM ferulic acid treatment on leaf expansion when a single treatment was given at various times to seedlings ranging from 7 to 19 days of age. Treatments of 1mM or greater induced rapid wilting of leaves, but visible recovery occurred within 24-48 hr and subsequent treatments did not cause wilting. Once seedlings were removed from ferulic acid treatments, leaf expansion resumed. The magnitude of recovery depended on the concentration of ferulic acid, frequency of ferulic acid application and age of the seedling. Mean relative rates of leaf expansion recovered rapidly even in the presence of ferulic acid. Recovery of leaf expansion after ferulic acid treatments was faster for seedlings grown in an adequate nutrient environment than for seedlings grown in a limited nutrient environment. Ferulic acid disappeared from nutrient solutions with time, and two microbial metabolic products of ferulic acid (i.e., vanillic and protocatechuic acid) were identified in nutrient solutions.

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Section: Inhibition Of Radicle Growth and Subsequent Seedlingmentioning

confidence: 99%

Effects of ferulic acid, an allelopathic compound, on leaf expansion of cucumber seedlings grown in nutrient culture

Blum

Dalton

1985

J Chem Ecol

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“…In metabolic studies, attention has been principally focused on pseudomonads and vibrioform bacteria (Evans, 1963), while studies on industrial effluents have usually involved undefined mixtures of micro-organisms (Evans & Kite, 1961). Recently, the ability of yeasts to degrade phenol has been investigated (Harris & Ricketts, 1962) and, at least on pilot plant scale has been exploited commercially (Reiche, Hilgetag, Lorenz & Martini, 1962).…”

Section: Introductionmentioning

confidence: 99%

Continuous Culture of Yeast on Phenol

Wase¹,

Hough²

1966

Journal of General Microbiology

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SUMMARYDebaryomyces subgbbosw ( NCYC 459) was grown in continuous culture a t 30" in media containing 3,6.65,9 and 12 pmoles phenol/ml. as sole source of carbon. With each medium, wash-out of organisms occurred at dilution rates in the range 0-33-0.36 hr-l. The yeasts became quickly adapted to the medium with lowest phenol content and grew readily at dilution rates between 0.1 and 0-3 hr-l. At lower dilution rates, however, the endogenous metabolism of the yeasts tended to outstrip the rate at which phenol was supplied. With 9 pmoles phenol/ml. the best rate of output of yeast was achieved but at 6-65 pmoles phenol/ml., was most fully utilized, utilization being complete up to a dilution rate of 0.3 hr-1. At the highest contents of phenol in the medium, the yeast adapted less readily and produced considerable amounts of riboflavin. The population became heterogeneous, with some yeasts clumping and others large and fragile. There was some evidence that the latter were unable to metabolize phenol but could utilize catechol, a product of metabolism of the normal organisms.The appendix provides a comparison between the reported results and those calculated from the growth constants using classical mathematical treatment of continuous culture. Substantial deviations are attributed to high maintenance energy requirements, flocculation of the yeast and toxicity of the medium.

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“…One of the few such derivatives lacking the aromatic acetyl group is pyrousnic acid (4), (19)(20)(21)(22) obtained by heating (+)-usnic acid (1) to 210°C in 50% sodium or potassium hydroxide under a stream of hydrogen for 10 min (Fig. 2).…”

Section: Kutney Et Almentioning

confidence: 99%

“…The degradation of organic compounds by microorganisms, an essential biochemical step, has considerable chemical and ecological significance, as can be seen from the increased work in this area (1)(2)(3)(4)(5)(6)(7)(8). Our interest in this field centers primarily on the study of the metabolic intermediates involved in the breakdown of various aromatic substrates as a means of elucidating the relevant biodegradation pathways involved (4)(5)(6)(7)(8).…”

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confidence: 99%

Studies in the usnic acid series. VII. The biodegradation of (+)-usnic acid by a Pseudomonas species. Isolation, structure determination, and synthesis of (+)-6-desacetylusnic acid

Kutney¹,

Leman²,

Salisbury³

et al. 1977

Can. J. Chem.

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. Can. J. Chem. 55, 2336 (1977). Studies on the biodegradation of (+)-usnic acid (1) by a Pseudomonas species have revealed a novel aromatic deacylation process. The isolated metabolite, (+)-6-desacetylusnic acid (2) is crystalline and its structure is established by means of spectroscopic and chemical methods. The synthesis of 2 from usnic acid (1) is also reported and provides conclusive evidence for the structure of this metabolite.

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The Microbiological Degradation of Aromatic Compounds

Cited by 109 publications

References 23 publications

Effects of ferulic acid, an allelopathic compound, on leaf expansion of cucumber seedlings grown in nutrient culture

Effects of ferulic acid, an allelopathic compound, on leaf expansion of cucumber seedlings grown in nutrient culture

Continuous Culture of Yeast on Phenol

Studies in the usnic acid series. VII. The biodegradation of (+)-usnic acid by a Pseudomonas species. Isolation, structure determination, and synthesis of (+)-6-desacetylusnic acid

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