Sökning: id:"swepub:oai:lup.lub.lu.se:78d9d725-ed71-4ce8-92a4-f8b39adb0cc2" >
A phosphorus thresh...
A phosphorus threshold for mycoheterotrophic plants in tropical forests
-
- Sheldrake, Merlin (författare)
- Smithsonian Tropical Research Institute,University of Cambridge
-
- Rosenstock, Nicholas P. (författare)
- Lund University,Lunds universitet,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science
-
- Revillini, Daniel (författare)
- Northern Arizona University,Smithsonian Tropical Research Institute
-
visa fler...
-
- Olsson, Pål Axel (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversity,Department of Biology,Faculty of Science
-
- Joseph Wright, S. (författare)
- Smithsonian Tropical Research Institute
-
- Turner, Benjamin L. (författare)
- Smithsonian Tropical Research Institute
-
visa färre...
-
(creator_code:org_t)
- 2017-02-08
- 2017
- Engelska.
-
Ingår i: Proceedings of the Royal Society B: Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 284:1848
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://royalsociety...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The majority of terrestrial plants associate with arbuscular mycorrhizal (AM) fungi, which typically facilitate the uptake of limiting mineral nutrients by plants in exchange for plant carbon. However, hundreds of non-photosynthetic plant species—mycoheterotrophs—depend entirely on AM fungi for carbon as well as mineral nutrition. Mycoheterotrophs can provide insight into the operation and regulation of AM fungal relationships, but little is known about the factors, fungal or otherwise, that affect mycoheterotroph abundance and distribution. In a lowland tropical forest in Panama, we conducted the first systematic investigation into the influence of abiotic factors on the abundance and distribution of mycoheterotrophs, to ask whether the availability of nitrogen and phosphorus altered the occurrence of mycoheterotrophs and their AM fungal partners. Across a natural fertility gradient spanning the isthmus of Panama, and also in a long-term nutrientaddition experiment, mycoheterotrophs were entirely absent when soil exchangeable phosphate concentrations exceeded 2 mg P kg21. Experimental phosphorus addition reduced the abundance of AM fungi, and also reduced the abundance of the specific AM fungal taxa required by the mycoheterotrophs, suggesting that the phosphorus sensitivity of mycoheterotrophs is underpinned by the phosphorus sensitivity of their AM fungal hosts. The soil phosphorus concentration of 2 mg P kg21 also corresponds to a marked shift in tree community composition and soil phosphatase activity across the fertility gradient, suggesting that our findings have broad ecological significance.
Ämnesord
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Nyckelord
- Arbuscular mycorrhizal fungi
- Epiparisitism
- Mycoheterotroph
- Phosphorus
- Tropical forest
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas