Microbial activity in forest soil reflects the changes in ecosystem properties between summer and winter

0468934 - MBÚ 2017 RIV GB eng J - Článek v odborném periodiku
Žifčáková, Lucia - Větrovský, Tomáš - Howe, A. - Baldrian, Petr
Microbial activity in forest soil reflects the changes in ecosystem properties between summer and winter.
Environmental Microbiology. Roč. 18, č. 1 (2016), s. 288-301. ISSN 1462-2912. E-ISSN 1462-2920
Grant CEP: GA ČR GAP504/12/0709; GA ČR GA13-06763S; GA MŠMT LD12048; GA MŠMT LD12050
Institucionální podpora: RVO:61388971
Klíčová slova: EXTRACELLULAR ENZYME-ACTIVITIES * DE-BRUIJN GRAPHS * RIBOSOMAL-RNA
Kód oboru RIV: EE - Mikrobiologie, virologie
Impakt faktor: 5.395, rok: 2016

Understanding the ecology of coniferous forests is very important because these environments represent globally largest carbon sinks. Metatranscriptomics, microbial community and enzyme analyses were combined to describe the detailed role of microbial taxa in the functioning of the Picea abies-dominated coniferous forest soil in two contrasting seasons. These seasons were the summer, representing the peak of plant photosynthetic activity, and late winter, after an extended period with no photosynthate input. The results show that microbial communities were characterized by a high activity of fungi especially in litter where their contribution to microbial transcription was over 50%. Differences in abundance between summer and winter were recorded for 26-33% of bacterial genera and < 15% of fungal genera, but the transcript profiles of fungi, archaea and most bacterial phyla were significantly different among seasons. Further, the seasonal differences were larger in soil than in litter. Most importantly, fungal contribution to total microbial transcription in soil decreased from 33% in summer to 16% in winter. In particular, the activity of the abundant ectomycorrhizal fungi was reduced in winter, which indicates that plant photosynthetic production was likely one of the major drivers of changes in the functioning of microbial communities in this coniferous forest.
Trvalý link: http://hdl.handle.net/11104/0267381