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Impact of plant identity, diversity and composition on diversity, composition and function of nirK-type denitrifying microorganisms in temperate grassland soil
The impact of plant species, the number of plant species (diversity) and the composition of plant species on nirK-type denitrifying microorganisms in soil was studied. NirK encodes the enzyme nitrite reductase which is the key enzyme for dissimilatory nitrate reduction. As a measure for denitri...
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| Формат: | Dissertation |
| Мова: | англійська |
| Опубліковано: |
Philipps-Universität Marburg
2007
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| Предмети: | |
| Онлайн доступ: | PDF-повний текст |
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| Резюме: | The impact of plant species, the number of plant species (diversity) and the
composition of plant species on nirK-type denitrifying microorganisms in
soil was studied. NirK encodes the enzyme nitrite reductase which is the key
enzyme for dissimilatory nitrate reduction. As a measure for denitrifier
function, net and gross dinitrogenoxide (N2O) production rates and
denitrifier enzyme activity were determined. Plant identity, diversity and
composition influenced the composition of denitrifiers in soil and partially
their function. The plant species were Arrhenatherum elatius, Anthoxanthum
odoratum, Alopecurus pratensis, Holcus lanatus, Geranium pratense, Plantago
lanceolata, Ranunculus acris and Taraxacum officinale. For this study, the
following techniques were applied: T-RFLP (terminal restriction fragment
length polymorphism), analysis of variance, analysis of covariance,
correspondence analysis, canonical correspondence analysis, determination of
diversity indices, maximum likelihood. |
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| Фізичний опис: | 150 Seiten |
| DOI: | 10.17192/z2007.0154 |