Filtyp
Soil pH is one of the most influential factors for the composition of bacterial and fungal communities, but the influence of soil pH on the distribution and composition of soil archaeal communities has yet to be systematically addressed. The primary aim of this study was to determine how total archaeal abundance (qPCR based estimates of 16S rRNA gene copy numbers) is related to soil pH across a pH
Cinnamoyl-CoA reductase (CCR), an enzyme central to the lignin biosynthetic pathway, represents a promising biotechnological target to reduce lignin levels and to improve the commercial viability of lignocellulosic biomass. However, silencing of the CCR gene results in considerable flux changes of the general and monolignol-specific lignin pathways, ultimately leading to the accumulation of variou
How land-application of digestate sourced from anaerobic digestion (AD) of animal waste influences the functioning of a mixed pasture agroecosystem is not well characterised, particularly with regard to the response of the actively growing microbial community. We studied the impact of the liquid AD digestate on the decomposer community in two different soils, seeded with two different common grass
The relationship between community structure and growth and pH tolerance of a soil bacterial community was studied after liming in a reciprocal inoculum study. An unlimed (UL) humus soil with a pH of 4.0 was fumigated with chloroform for 4 h, after which < 1 % of the initial bacterial activity remained. Half of the fumigated soil was experimentally limed (EL) to a pH of 7.6. Both the UL and the EL
Abstract is not available
Although hypothesized for many years, the involvement of ectomycorrhizal fungi in decomposition of soil organic matter remains controversial and has not yet been fully acknowledged as an important factor in the regulation of soil carbon (C) storage. Here, we review recent findings, which support the view that some ectomycorrhizal fungi have the capacity to oxidize organic matter, either by brown-r
Summary *Here, species composition and biomass production of actively growing ectomycorrhizal (EM) mycelia were studied over the rotation period of managed Norway spruce (Picea abies) stands in south-western Sweden. *The EM mycelia were collected using ingrowth mesh bags incubated in the forest soil during one growing season. Fungal biomass was estimated by ergosterol analysis and the EM species w
A detailed understanding of the influence of temperature on soil microbial activity is critical to predict future atmospheric CO2 concentrations and feedbacks to anthropogenic warming. We investigated soils exposed to 3-4 years of continuous 5 degrees C-warming in a field experiment in a temperate forest. We found that an index for the temperature adaptation of the microbial community, T-min for b
Soil nitrogen (N) availability constrains future predictions of ecosystem primary productivity and carbon storage. The progressive N limitation (PNL) hypothesis predicts that forest net primary productivity (NPP) will decline with age, and that the response of NPP to elevated CO2 will attenuate through time due to negative feedbacks of NPP on the soil N cycle. A central assumption of the PNL hypot
The purpose of this article is to explore themes and challenges in making freight transport sustainable out of a logistics service providers’ perspective. The approach is explorative and the main method for data collection is interviews. The study has a cross sectional design which takes advantage of nine semi-structured interviews from selected logistics service providers operating in the Scandi
The ‘old’ forms of governance have been criticised for being neither sufficiently democratic nor effective. The popularity of ‘new’ modes of governance includes the embracing of values – integral to democratic processes – such as legitimacy, public accountability and trust. By relating parts of this ‘old-vs.-new’ distinction to March & Olsen’s dichotomy of aggregative vs. integrative politica
Background: The Mg-protoporphyrin IX monomethyl ester cyclase is one of the 15 enzymes required for biosynthesis of chlorophyll in plants. The Ycf54 protein is a component associated with this enzyme and probably functions as a chaperone. Due to the lack of mutants in the Ycf54 gene, we targeted this gene in barley (Hordeum vulgare L.) by RNA-guided Cas9 genome editing to dissect its role in chlor
NGEN08_VT_2014 Answer Count: 17 Do you think that the aim, as described above, has been reached well in this course? Do you think that the aim, as described above, has been reached well in this course? Number of Responses 1 0 (0,0%) 2 0 (0,0%) 3 1 (5,9%) 4 12 (70,6%) 5 4 (23,5%) Total 17 (100,0%) Mean Standard Deviation Do you think that the aim, as described above, has been reached well in
https://www.nateko.lu.se/sites/nateko.lu.se/files/evaluation_ngen08_vt_2014_final.pdf - 2026-07-24
During the last decade it has been increasingly acknowledged that carbon (C) contained in root exudates can accelerate decomposition of soil organic matter (SOM), a phenomenon known as rhizosphere priming effect (RPE). However, the controlling factors and the role of different soil microorganisms in RPE are not yet well understood. There are some indications that the response of the soil microbial
