Microbial Nutrition

Guirard, Beverly M.

doi:10.1146/annurev.mi.12.100158.001335

Cited by 9 publications

(7 citation statements)

References 56 publications

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“…Chukwu et al, (2008) also identified similar fungi from tomato and snake gourd in Rivers State, Nigeria. Guirrard (1958) and Franshauser (2005), earlier observed that the oil present in Avocado pear also encourages the metabolism of fungi. The fungal isolates in this study: Geotrichum sp.…”

Section: Discussionmentioning

confidence: 94%

Microorganisms associated with the spoilage of avocado pear, Persea Americana fruits

Wogu¹

2014

AFRREV STECH: Int J. Sci and Technol

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Section: Discussionmentioning

confidence: 94%

Microorganisms associated with the spoilage of avocado pear, Persea Americana fruits

Wogu¹

2014

AFRREV STECH: Int J. Sci and Technol

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“…For example, Streptococcus faecalis ornithine transcarbamylase is inhibited by 5-hydroxynorvaline ( Kurtin et al , 1971 ). In Escherichia coli , 5-hydroxynorvaline competes for transport with homoserine, thereby inhibiting growth ( Guirard, 1958 ). In vitro assays showed that 5-hydroxynorvaline is an inhibitor of cystathionine gamma-lyase activity ( Washtien et al , 1977 ).…”

Section: Discussionmentioning

confidence: 99%

Accumulation of 5-hydroxynorvaline in maize (Zea mays) leaves is induced by insect feeding and abiotic stress

Yan

Lipka

Schmelz

et al. 2014

Journal of Experimental Botany

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“…Inorganic, mineralized N (N min , the sum of NO 3 − and NH 4 + ) was determined in K 2 SO 4 extracts of the non‐fumigated samples by a continuous flow analyser (Evolution II auto‐analyzer, Alliance Instruments, Salzburg, Austria). The concentrations of available macronutrients important for maintaining microbial life, that is, calcium (Ca), potassium (K), phosphorus (P) and sulphur (S) (Guirard, ; Lichstein, ; Madigan et al ., ), were determined for all samples after incubation by applying the Mehlich‐3 multi‐element extraction method according to Wolf & Beegle () with ion chromatography (850 Professional IC, Metrohm, Herisau, Switzerland, for K, and Varian VISTA RL CCD Simultaneous ICP‐AES, Varian Inc., Melbourne, Australia, for Ca, P and S).…”

Section: Methodsmentioning

confidence: 99%

Effects of fine root characteristics of beech on carbon turnover in the topsoil and subsoil of a sandy Cambisol

Vormstein

Kaiser

Piepho

et al. 2017

European J Soil Science

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Fine roots that enter mineral soil at different depths are a major source of organic carbon stored in forest soil. Little is known about the key factors that govern the mineralization kinetics of fine roots in topsoil compared with subsoil. Therefore, we analysed the effects of concentration, spatial distribution and size of fine beech roots on their rates of decomposition in the topsoil and subsoil of a sandy Cambisol. Undisturbed (intact soil columns) and disturbed (soil sieved < 2 mm) samples from the topsoil (2–10 cm) and subsoil (145–153 cm) were incubated for 365 days to determine the carbon dioxide emissions. The treatments included applications of fine roots that varied in size (length: <2 mm and 1–2 cm), different rates of application (2 and 8 g kg‐1) and spatial distribution (homogeneous and locally concentrated, i.e. localized). The mineralization was affected significantly at both depths by the rate of application (large rate > small rate) and in the topsoil by distribution (localized > homogeneous). The spatial distribution of large roots, but not smaller ones, affected rates of emission in subsoil but not in topsoil. Correlation analyses suggest an effect of the calcium and potassium supply on the microbial biomass and on the turnover of roots if these are locally concentrated. The data of this study suggest that in sandy soil the availability of macronutrients has to be considered complementary to root characteristics such as concentration, size and distribution to elucidate their decomposition kinetics throughout the soil profile. Highlights Analysis of effects of characteristics of fine beech roots on organic matter decomposition in top‐ and subsoil. The rate of decomposition in the topsoil was larger if the fine roots were locally concentrated. The rate of mineralization of fine beech roots in the subsoil increased with increasing root size. Soil microbial biomass carbon is affected by the supply of calcium and potassium if the fine beech roots are locally concentrated.

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Microbial Nutrition

Cited by 9 publications

References 56 publications

Microorganisms associated with the spoilage of avocado pear, Persea Americana fruits

Microorganisms associated with the spoilage of avocado pear, Persea Americana fruits

Accumulation of 5-hydroxynorvaline in maize (Zea mays) leaves is induced by insect feeding and abiotic stress

Effects of fine root characteristics of beech on carbon turnover in the topsoil and subsoil of a sandy Cambisol

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