Rapid destruction of orchid habitats and over-collection of the tubers are the greatest threats to orchid diversity. To counter these threats, it is necessary to grow orchid tubers easily and quickly for economic reasons and to reintroduce populations in the habitats of species that are facing extinction. This study demonstrates a simple viability test for orchid seeds and the ex vitro symbiotic seed germination of temperate orchids. Viability of the seeds of two orchid species, Anacamptis coriophora and Orchis anatolica, was determined without any chemical treatment of the seed coat. Seeds were incubated in packs in moist cocopeats for five days during which seed viability tests being performed daily. The highest viability rate was found in the seeds that were incubated for five days (64.33% for O. coriophora; 67.19% for O. anatolica). The seeds of these orchids were sown non-axenically into a pre-inoculated soil mixture with a compatible fungus, Ceratobasidium sp. AG A. The seeds of both the orchids germinated 18 days after sowing. Leafy and rooted seedlings developed two months after sowing and the first tubers of both the species developed seven months later.
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http://dx.doi.org/10.1007/s42977-021-00100-5 | DOI Listing |
BMC Genomics
January 2025
Deakin Nanobiotechnology Centre, TERI, Sustainable Agriculture Division, TERI Gram, The Energy and Resources Institute, Gwal Pahari, Gurgaon Faridabad Road, Gurgaon, Haryana, 122001, India.
Background: Arbuscular mycorrhizal (AM) fungi form a highly adaptable and versatile group of fungi found in natural and man-managed ecosystems. Effector secreted by AM fungi influence symbiotic relationship by modifying host cells, suppressing host defense and promoting infection to derive nutrients from the host. Here, we conducted a reference-based transcriptome sequencing of Funneliformis mosseae BR221 to enhance understanding on the molecular machinery involved in the establishment of interaction between host and AM fungi.
View Article and Find Full Text PDFMicrob Ecol
January 2025
Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, 530004, China.
Coral thermal tolerance is intimately linked to their symbiotic relationships with photosynthetic microorganisms. However, the potential compensatory role of symbiotic photosynthetic bacteria in supporting Symbiodiniaceae photosynthesis under extreme summer temperatures remains largely unexplored. Here, we examined the seasonal variations in Symbiodiniaceae and photosynthetic bacterial community structures in Pavona decussata corals from Weizhou Island, Beibu Gulf, China, with particular emphasis on the role of photosynthetic bacteria under elevated temperature conditions.
View Article and Find Full Text PDFBMC Plant Biol
January 2025
Hebei Agricultural University, Baoding, China.
Background: Nitrogen (N) deposition has become a major driving factor affecting the balance of terrestrial ecosystems, changing the soil environment, element balance and species coexistence relationships, driving changes in biodiversity and ecosystem structure and function. Human-induced nitrogen input leads to a high NH/ NO ratio in soil. However, relatively few studies have investigated the effects of different nitrogen sources on forest plant-microbial symbionts.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Microbiology, Biocenter, University of Würzburg, Würzburg, D-97074, Germany.
Braz J Microbiol
December 2024
Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
Orchidaceae is one of the largest plant families and stands out for its wide variety of flowers with ornamental and environmental importance. Cattleya is one of the main commercial genera, presenting a great diversity of species and hybrids that attract the attention of collectors, orchid enthusiasts, and consumers. In their natural environment, orchids associate with mycorrhizal fungi, which are responsible for providing carbon and other nutrients during seed germination.
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