29 Result(s)
within
C. Muller
Life Sciences
English
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Article
Biochar with nitrapyrin reduces ammonia volatilization and increases nitrogen use efficiency of cabbage: A 15N tracer study
Nitrogen use efficiency (NUE) in subtropical crop** systems is low causing a large quantity of reactive N loss to the environment. However, the mechanisms and pathways of such losses are poorly understood. T...
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Evaluating the Effect of External Conditions on the Quality Attributes of Potatoes
The rapidly growing global population emphasises the need for high-yielding, sustainable, yet nutritious food crops, which produce consistent yields under varying agricultural conditions. There are various cri...
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Article
Protein Quality of South African Potatoes to Inform Dietary Choices
Protein content was determined using both the nitrogen to protein conversion factor of 6.25 and the summation of amino acids for four of the potato cultivars (Solanum tuberosum L.) most commonly consumed in South...
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Article
Open AccessLinking long-term soil phosphorus management to microbial communities involved in nitrogen reactions
The influence of soil phosphorous (P) content on the N-cycling communities and subsequent effects on N2O emissions remains unclear. Two laboratory incubation experiments were conducted on soils collected from a l...
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Article
Herbivore-induced plant volatiles, not natural enemies, mediate a positive indirect interaction between insect herbivores
Many insect herbivores engage in apparent competition whereby two species interact through shared natural enemies. Upon insect attack, plants release volatile blends that attract natural enemies, but whether t...
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Potential modes of range shifts in euryhaline snails from the Baltic Sea and fresh water lakes in northern Germany
The widely distributed snail species Theodoxus fluviatilis (Linneaus, 1758) is rather diverse in shell size and patterning. It has formed regional subgroups in northern Germany that appear separate in either fres...
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Article
Open AccessMagnitude, form and bioavailability of fluvial carbon exports from Irish organic soils under pasture
Organic soils are widespread in Ireland and vulnerable to degradation via drainage for agriculture. The soil-landuse combination of pasture on organic soils may play a disproportionate role in regional C dynam...
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Article
The Carrington Solar Flares of 1859: Consequences on Life
The beginning of September 1859 was the occasion of the first and unique observation of a giant solar white light flare, auroral displays were observed at low latitudes and geomagnetic observatories recorded e...
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Article
The extent of methane (CH4) emissions after fertilisation of grassland with digestate
Methane (CH4) emissions following surface application of liquid digestate were measured on agricultural grassland. The total extent of emissions was estimated by curve fitting and integration. The temporal patter...
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Article
Diversity and linkage disequilibrium features in a composite public/private dent maize panel: consequences for association genetics as evaluated from a case study using flowering time
Recent progress in genoty** and resequencing techniques have opened new opportunities for deciphering quantitative trait variation by looking for associations between traits of interest and polymorphisms in ...
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Article
HDLs inhibit endoplasmic reticulum stress and autophagic response induced by oxidized LDLs
The apoptotic effect of oxidized LDLs (oxLDLs) is mediated through a complex sequence of signaling events involving a deregulation of the cytosolic Ca2+ homeostasis. OxLDLs also trigger ER stress that may lead to...
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Article
Determination of ergot alkaloids in rye and rye flour
An effective and timesaving analytical method was developed for the determination of 12 ergot alkaloids (ergometrine, ergotamine, ergocristine, α-ergokryptine, ergosine, ergocornine, and their respective -inin...
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Article
Zucchini yellow mosaic virus — incidence and sources of virus infection in field-grown cucumbers and pumpkins in the Spreewald, Germany
In a survey in field-grown cucumber (Cucumis sativus L.) of the Spreewald cultivation area, Germany, from 2001 to 2004, infection with zucchini yellow mosaic virus (ZYMV), watermelon mosaic virus (WMV), cucumber ...
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Article
Nitrification and denitrification as sources of atmospheric nitrous oxide – role of oxidizable carbon and applied nitrogen
Laboratory incubation experiments were conducted to study the influence of easily oxidizable C (glucose) and mineral N (NH4 + and NO3 –) on N2O emission, evolution of CO2 and consumption of O2. A flush of N2O wa...
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Article
The cyo operon of Pseudomonas putida is involved in carbon catabolite repression of phenol degradation
A bicistronic reporter consisting of the promoterless genes aacC1 (conferring gentamycin resistance) and lacZ fused to the catabolic promoter of the phenol degradation genes was used to identify and analyse muta...
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Article
The inverted repeats of IS1384, a newly described insertion sequence from Pseudomonas putida strain H, represent the specific target for integration of IS1383
Analysis of a region on plasmid pPGH1 from Pseudomonas putida strain H that is flanked by two copies of IS1383 has revealed an additional element with the typical features of a bacterial insertion sequence. This...
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Article
Release, movement and recovery of 3,4-dimethylpyrazole phosphate (DMPP), ammonium, and nitrate from stabilized nitrogen fertilizer granules in a silty clay soil under laboratory conditions
In model experiments under laboratory conditions the release of 3,4-dimethylpyrazole phosphate (DMPP; ENTEC), NH4 +-N, and NO3 –-N from the ENTEC-fertilizer granules placed on a silty clay soil was studied. The ...
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Adaptation of plasma membrane H+-ATPase of proteoid roots of white lupin (Lupinus albus L.) to phosphorus deficiency
White lupin (Lupinus albus L.) produces proteoid roots during adaptation to phosphorus deficiency. One of the most marked characteristics of proteoid roots is the strong acidification of the rhizosphere, resultin...
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Article
Field method to determine N2O emission from nitrification and denitrification
Nitrous oxide (N2O) emissions via the nitrification (I nit) and denitrification (I den) pathways were successfully measured with in-field incubation of soil cores in preserving jars at 0 Pa and 5–10 Pa acetylene...
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Article
The transposable elements resident on the plasmids of Pseudomonas putida strain H, Tn5501 and Tn5502, are cryptic transposons of the Tn3 family
Genes for (methyl)phenol degradation in Pseudomonas putida strain H (phl genes) are located on the plasmid pPGH1. Adjacent to the phl catabolic operon we identified a cryptic transposon, Tn5501, of the Tn3 famil...
