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- Veen, Johannes A. van, et al. Show all 4 Authors
- Phytopathology 2010 v.100 no.11 pp. 1128-1137
- plant pathogenic bacteria; green fluorescent protein; disease course; signs and symptoms (plants); stolons; Solanum tuberosum; plant extracts; translocation (plant physiology); disease transmission; potatoes; seed tubers; xylem; roots; leaves
- ... Translocation of a green fluorescent protein (GFP)-tagged Dickeya sp. from stems or from leaves to underground parts of potato plants was studied in greenhouse experiments. Thirty days after stem inoculation, 90% of plants expressed symptoms at the stem base and 95% of plants showed browning of internal stem tissue. The GFP-tagged Dickeya sp. was detected by dilution plating in extracts of the ste ...
- Veen, Johannes A. van, et al. Show all 16 Authors
- BioScience 2013 v.63 no.1 pp. 35-42
- biogeochemical cycles; carbon; ecosystems; energy; freshwater; marine sediments; mineralization; nutrients; organic matter; photosynthesis; phytoplankton; primary productivity; roots; soil; soil food webs
- ... The food webs of terrestrial soils and of freshwater and marine sediments depend on adjacent aboveground or pelagic ecosystems for organic matter input that provides nutrients and energy. There are important similarities in the flow of organic matter through these food webs and how this flow feeds back to primary production. In both soils and sediments, trophic interactions occur in a cycle in whi ...
- Veen, Johannes A. van, et al. Show all 11 Authors
- Proceedings of the National Academy of Sciences of the United States of America 2010 v.107 no.24 pp. 10938-10942
- carbon; carbon cycle; carbon dioxide; carbon dioxide enrichment; fatty acids; fungal communities; isotope labeling; models; mycorrhizal fungi; phosphates; photosynthesis; prediction; quantitative polymerase chain reaction; rhizodeposition; rhizosphere; roots; soil; stable isotopes; terrestrial ecosystems; vegetation
- ... Rising atmospheric CO₂ levels are predicted to have major consequences on carbon cycling and the functioning of terrestrial ecosystems. Increased photosynthetic activity is expected, especially for C-3 plants, thereby influencing vegetation dynamics; however, little is known about the path of fixed carbon into soil-borne communities and resulting feedbacks on ecosystem function. Here, we examine h ...
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