Sökning: "mycorrhiza"
Visar resultat 16 - 20 av 25 avhandlingar innehållade ordet mycorrhiza.
16. Heterobasidion - conifer pathosystem : heterologous array analysis and transcriptional shift from saprotrophic to necrotrophic growth
Sammanfattning : In this thesis the Heterobasidion – conifer pathosystem is discussed in a symbiosis context. Heterobasidion annosum (Fr.)Bref. s. LÄS MER
17. Jasmonates in root nodule development
Sammanfattning : Jasmonic acid (JA), its derivatives and its precursor form a group of phytohormones, the jasmonates, representing signal molecules involved in plant stress responses, in the defense against pathogens as well as in development. Elevated levels of JA have been shown to play a role in arbuscular mycorrhiza and in the induction of nitrogen-fixing root nodules. LÄS MER
18. Processes controlling carbon fluxes in the soil-vegetation-atmosphere system
Sammanfattning : Increasing emissions of carbon dioxide (CO2) to the atmosphere have a direct impact on global warming and climate change. The ability of ecosystems to sequester CO2 is therefore of great importance. The Boreal forest contains one of the world’s largest carbon stocks after having acted as a net sink of CO2 for thousands of years. LÄS MER
19. Ectomycorrhizal Fungal Mycelial Dynamics and its Role in Forest Soil Carbon Cycling
Sammanfattning : Most boreal tree species rely on root-associated ectomycorrhizal fungi for nutrient acquisition, in exchange the trees allocate part of their photosynthetically fixed carbon (C) to these fungi. This has a feedback on soil C dynamics as mycorrhizal fungi are important in regulating soil C cycling and storage. LÄS MER
20. The effect of forest nutrients status on ectomycorrhizal growth and community structure in response to minerals
Sammanfattning : Ectomycorrhiza are a symbiosis between trees and soil inhabiting fungi. The fungal hyphae ensheath the fine roots creating a mantle and grow in between root cells to create the Hartig net, where the exchange of carbon and mineral nutrients occurs. The ectomycorrhizal fungus is dependent on the host tree to receive the carbon it needs to grow. LÄS MER