Effects of clonal integration on microbial community composition and processes in the rhizosphere of the stoloniferous herb Glechoma longituba (Nakai) Kuprian

The effects of rhizodeposition on soil C and N availabilities lead to substantial changes of microbial community composition and processes in the rhizosphere of plants. Under heterogeneous light, photosynthates can be translocated or shared between exposed and shaded ramets by clonal integration. Cl...

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Bibliographic Details
Published in:PloS one 2014-09, Vol.9 (9), p.e108259-e108259
Main Authors: Lei, Ningfei, Li, Jun, Ni, Shijun, Chen, Jinsong
Format: Article
Language:English
Subjects:
Analysis
Biochemistry
Biology
Biology and Life Sciences
Carbon dioxide
Climate change
Community composition
Decomposition
Earth Sciences
Ecology and Environmental Sciences
Ecosystem biology
Ecosystems
Enzymes
Experiments
Fatty acids
Fungi
Glechoma
Herbs
Integration
Invertase
Lamiaceae - microbiology
Microbiomes
Microorganisms
Mineralization
Nitrification
Nitrogen
Nutrients
Offspring
Peroxidase
Phenoloxidase
Phospholipids
Photosynthates
Photosynthesis
Plants (botany)
Recycling
Rhizosphere
Urease
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Summary:The effects of rhizodeposition on soil C and N availabilities lead to substantial changes of microbial community composition and processes in the rhizosphere of plants. Under heterogeneous light, photosynthates can be translocated or shared between exposed and shaded ramets by clonal integration. Clonal integration may enhance the rhizodeposition of the shaded ramets, which further influences nutrient recycling in their rhizosphere. To test the hypothesis, we conducted a pot experiment by the stoloniferous herb Glechoma longituba subjected to heterogeneous light. Microbial biomass and community composition in the rhizosphere of shaded offspring ramets, assessed by phospholipid fatty acids (PLFAs) analysis, were markedly altered by clonal integration. Clonal integration positively affected C, N availabilities, invertase and urease activities, N mineralization (Nmin) and nitrification rates (Nnitri) in the rhizosphere of shaded offspring ramets. However, an opposite pattern was also observed in phenoloxidase (POXase) and peroxidase (PODase) activities. Our results demonstrated that clonal integration facilitated N assimilation and uptake in the rhizosphere of shaded offspring ramets. The experiment provides insights into the mechanism of nutrient recycling mediated by clonal integration.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0108259