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Unlocking germination: the role of mycorrhizal strain and seed provenance in driving seed germination of a widespread terrestrial orchid.
Mycorrhiza
March 2025
State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Orchids represent an important component of biodiversity in many ecosystems worldwide, notwithstanding their seed germination and distribution may to a large extent be determined and influenced by mycorrhizal fungi. While it is commonly assumed that widespread orchids are mycorrhizal generalists, the degree to which mycorrhizal diversity supports seed germination remains relatively underexplored. In this study, we investigated the role of a variety of Ceratobasidium fungi in supporting seed germination of the widespread terrestrial orchid Gymnadenia conopsea across China.
View Article and Find Full Text PDFMycorrhizal fungus BJ1, a new species of sp.: its biological characteristics and promoting effect on seed germination of .
Front Plant Sci
February 2025
College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Mycorrhizal fungi have been shown to promote seed germination and seedling growth in Orchidaceae plants. In the present study, a mycorrhizal fungus designated as BJ1 was isolated from the roots of (Thunb.) Reiehb.
View Article and Find Full Text PDFIntegrative analysis of the R2R3-MYB gene family revealed that BsMYB36 and BsMYB51 significantly regulate the accumulation of flavonoids in Bletilla striata (Orchidaceae).
Plant Physiol Biochem
March 2025
National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, PR China. Electronic address:
The R2R3-MYB transcription factors constitute a critical family involved in a variety of biological processes. They have been found to be essential participants in flavonoid biosynthesis in various plants. Bletilla striata (Thunb.
View Article and Find Full Text PDFFine-tuned terpene synthase gene expression, functional promiscuity, and subcellular localization: Implications for the evolution of complex floral volatile bouquet in Caladenia orchids.
Plant Cell Physiol
March 2025
Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT, 2600, Australia.
Chemically mediated floral volatile signals are crucial for pollinator attraction across angiosperms. However, beyond model plant systems, the molecular mechanisms underpinning their tissue-specific biosynthesis, regulation, and emission are still poorly understood. In this study of a food-deceptive insect pollinated orchid (Caladenia denticulata), we elucidated the molecular basis of α-pinene biosynthesis - the major floral volatile emitted by this species and diverse lower abundance monoterpenes and sesquiterpenes.
View Article and Find Full Text PDFMolecular phylogenetic analyses reveal multiple long-distance dispersal events and extensive cryptic speciation in (Orchidaceae), an isolated basal Epidendroid genus.
Front Plant Sci
February 2025
Tsukuba Botanical Garden, National Museum of Nature and Science, Tsukuba, Japan.
Introduction: The terrestrial orchid genus is diagnosed by its hysteranthous pattern of emergence but is nested among leafless myco-heterotrophic lineages in the lower Epidendroideae. Comprising ca. 80 species distributed across Africa, Asia and Oceania, the genus remains poorly known and plagued by vague and overlapping species circumscriptions, especially within each of a series of taxonomically intractable species complexes.
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