Miscellaneous Contributions to the Taxonomy and Mycorrhiza of AMF-exploiting Myco-heterotrophic Plants
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چکیده
– Afrothismia saingei, a new species of Burmanniaceae (tribe Thismieae) from Mt. Kupein South-West Cameroon is described and illustrated. It differs from the other species of the genusAfrothismia by the size of its flower, the long, distinctly heteromorphic tepals with fringed basalextensions, the dorsal invagination of the perianth tube and the unique shape of the internal flange.
منابع مشابه
Wide geographical and ecological distribution of nitrogen and carbon gains from fungi in pyroloids and monotropoids (Ericaceae) and in orchids.
* Stable isotope abundance analyses recently revealed that some European green orchids and pyroloids (Ericaceae) are partially myco-heterotrophic, exploiting mycorrhizal fungi for organic carbon and nitrogen. Here we investigate related species to assess their nutritional mode across various forest and climate types in Germany and California. * C- and N-isotope signatures of five green pyroloid...
متن کاملNitrogen and carbon stable isotope abundances support the myco-heterotrophic nature and host-specificity of certain achlorophyllous plants
• Over 400 species of achlorophyllous vascular plants are thought to obtain all C from symbiotic fungi. Consequently, they are termed ‘myco-heterotrophic.’ However, direct evidence of myco-heterotrophy in these plants is limited. • During an investigation of the patterns of N and C stable isotopes of various ecosystem pools in two old-growth conifer forests, we sampled six species of mycohetero...
متن کاملMyco-heterotroph/epiparasitic plant interactions with ectomycorrhizal and arbuscular mycorrhizal fungi.
More than 400 achlorophyllous plant species in 87 genera are parasitic upon fungi, and exploit them as their principle source of carbon. With a few exceptions, most of these myco-heterotrophic plants are now thought to be 'cheats', stealing carbon and nutrients from the mycorrhizal associates of adjacent autotrophic plants. Most myco-heterotrophs are therefore considered to be epiparasitic on g...
متن کاملBOTANICAL BRIEFING Myco-heterotrophy: when fungi host plants
†Background Myco-heterotrophic plants are partly or entirely non-photosynthetic plants that obtain energy and nutrients from fungi. These plants form a symbiosis with arbuscular mycorrhizal, ectomycorrhizal or saprotrophic fungi to meet their nutrient demands. † Scope This Botanical Briefing summarizes current knowledge about myco-heterotrophy, discusses its controversial aspects and highlights...
متن کاملGenetic exchange in an arbuscular mycorrhizal fungus results in increased rice growth and altered mycorrhiza-specific gene transcription.
Arbuscular mycorrhizal fungi (AMF) are obligate symbionts with most terrestrial plants. They improve plant nutrition, particularly phosphate acquisition, and thus are able to improve plant growth. In exchange, the fungi obtain photosynthetically fixed carbon. AMF are coenocytic, meaning that many nuclei coexist in a common cytoplasm. Genetic exchange recently has been demonstrated in the AMF Gl...
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تاریخ انتشار 2007