ArticlePlant physiology2023
Symbiosis between Dendrobium catenatum protocorms and Serendipita indica involves the plant hypoxia response pathway.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 27 citations in OpenAlex.
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- Unveiling the diversity and mechanisms of plant growth-promoting bacteria in orchids: a comprehensive review.Frontiers in microbiology · 2026Review
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- Comparative Symbiotic Effects of Mycorrhizal Fungal Strains from Different Hosts on Seed Germination and Seedling Growth inJournal of fungi (Basel, Switzerland) · 2025Article
- Effects of Endophytic FungusLife (Basel, Switzerland) · 2025Article
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- Discordance Down Under: Combining Phylogenomics and Fungal Symbioses to Detangle Difficult Nodes in a Diverse Tribe of Australian Terrestrial Orchids.Systematic biology · 2025Article
- Ecological specificity of fungi on seedling establishment in Dendrobium huoshanense: a narrow distributed medicinal orchid.Mycorrhiza · 2025Article
- Transcriptomic and protein-protein interaction network analyses of the molecular mechanisms underlying the mycorrhizal interaction inFrontiers in plant science · 2025Article
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- Perspective and challenges of mycorrhizal symbiosis in orchid medicinal plants.Chinese herbal medicines · 2024Review
- The structure and diversity of bacteria and fungi in the roots and rhizosphere soil of three different species of Geodorum.BMC genomics · 2024Article
- Roles of mycorrhizal fungi on seed germination of two Chinese medicinal orchids: need or do not need a fungus?Frontiers in plant science · 2024Article
- Microbial diversity and potential functional dynamics within the rhizocompartments ofFrontiers in plant science · 2024Article
- Comparative transcriptomics and proteomics analysis of the symbiotic germination ofFrontiers in microbiology · 2024Article
- "Smother love" of mycorrhiza: hypoxic germination of orchids.Plant physiology · 2023Article
- ERFVII transcription factors and their role in the adaptation to hypoxia in Arabidopsis and crops.Frontiers in genetics · 2023Review
Corrections and comments
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Authors and funding
10 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mycorrhizae are ubiquitous symbioses established between fungi and plant roots. Orchids, in particular, require compatible mycorrhizal fungi for seed germination and protocorm development. Unlike arbuscular mycorrhizal fungi, which have wide host ranges, orchid mycorrhizal fungi are often highly specific to their host orchids. However, the molecular mechanism of orchid mycorrhizal symbiosis is largely unknown compared to that of arbuscular mycorrhizal and rhizobial symbiosis. Here, we report that an endophytic Sebacinales fungus, Serendipita indica, promotes seed germination and the development of protocorms into plantlets in several epiphytic Epidendroideae orchid species (6 species in 2 genera), including Dendrobium catenatum, a critically endangered orchid with high medicinal value. Although plant-pathogen interaction and high meristematic activity can induce the hypoxic response in plants, it has been unclear whether interactions with beneficial fungi, especially mycorrhizal ones, also involve the hypoxic response. By studying the symbiotic relationship between D. catenatum and S. indica, we determined that hypoxia-responsive genes, such as those encoding alcohol dehydrogenase (ADH), are highly induced in symbiotic D. catenatum protocorms. In situ hybridization assay indicated that the ADH gene is predominantly expressed in the basal mycorrhizal region of symbiotic protocorms. Additionally, the ADH inhibitors puerarin and 4-methylpyrazole both decreased S. indica colonization in D. catenatum protocorms. Thus, our study reveals that S. indica is widely compatible with orchids and that ADH and its related hypoxia-responsive pathway are involved in establishing successful symbiotic relationships in germinating orchids.
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