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Photosynthetic Mediterranean meadow orchids feature partial mycoheterotrophy and specific mycorrhizal associations.
TLDR
Phylogenetic and multivariate comparisons indicated that even in sunny Mediterranean meadows, orchids may be mycoheterotrophic, with correlated mycorrhizal fungal specificity.
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C and N stable isotope signatures reveal constraints to nutritional modes in orchids from the Mediterranean and Macaronesia.
TLDR
Most adult orchids of open habitats in the Mediterranean and Macaronesia show weak or no N gains from fungi and no C gain through mycoheterotrophy, while isotope signatures of some of these species indicate net plant-to-fungus C transfer.
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Temporal variation in mycorrhizal diversity and carbon and nitrogen stable isotope abundance in the wintergreen meadow orchid Anacamptis morio.
TLDR
Observations suggest that, irrespective of differences in the seasonal environmental conditions, the plant phenological stages and the associated fungi, the isotopic content in mycorrhizal A. morio remains fairly constant over time.
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Gene expression in mycorrhizal orchid protocorms suggests a friendly plant–fungus relationship
TLDR
The data on mycorrhizal protocorms do not support this view as plant defence genes were not induced, whereas some nodulin-like genes were significantly up-regulated, suggesting that fungal colonization does not trigger strong plant defence responses.
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New Guinea has the world’s richest island flora
TLDR
A catalogue of the vascular flora of New Guinea indicates that this island is the most floristically diverse in the world, and that 68% of the species identified are endemic to New Guinea.
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Two new species of Hoya R.Br. (Apocynaceae, Asclepiadoideae) from Borneo
Abstract Two new Hoya R.Br. species from Borneo are described and illustrated. The first, Hoya ruthiae Rodda was collected in Sabah on Bukit Baturong, a limestone outcrop. It is one of the few…
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Hoya sapaensis (Apocynaceae, Asclepiadoideae), a New Species from Vietnam
TLDR
Hoya sapaensis distinctly differs in the length of the pollinium and corpusculum, number of flowers per inflorescence, and the shape of the corolla from H. carnosa and H. bonii.
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Hoya thuathienhuensis and Hoya graveolens (Apocynaceae, Asclepiadoideae), a new species and a new record for the Flora of Vietnam
A new species from the Annamite mountain range of central Vietnam, Hoya thuathienhuensis, is here described and illustrated. Its flowers bear similarity with Hoya lockii, a taxon recently described…
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Checklist and typification of Heterostemma (Apocynaceae, Asclepiadoideae, Ceropegieae)
TLDR
L Lectotypes are designated for 33 names and a neotype is designated for Stapelia quadrangula and three new combinations are validated.
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Establishment of a Symbiotic in vitro System between a Green Meadow Orchid and a Rhizoctonia-like Fungus
TLDR
A protocol for symbiotic germination of the terrestrial Mediterranean green meadow orchid Serapias vomeracea is presented and the fungal symbiont Tulasnella calospora was chosen because of its common occurrence.
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