Potential Specificity Between Mycorrhizal Fungi Isolated from Widespread Dendrobium spp. and Rare D. huoshanense Seeds

Tang, Yanjing; Zhou, Dongyu; Dai, Jun; Li, Yang; Xing, Yong-Mei; Guo, Shun‐Xing; Chen, Juan

doi:10.1007/s00284-022-02952-z

Cited by 4 publications

(3 citation statements)

References 46 publications

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“… 53 , 54 Conversely, the mycorrhizal characteristics of orchids can screen out fungal groups that can coexist and change the fungal community structure in the soil through alternate growth, antagonism, competition and other mechanisms. 55 , 56 Mycorrhizal fungi and endophytic fungi communities in subgenus Brachypetalum species are worthy of further study in the future. They are not only the way through which orchids adapt and survive in the environment but also the main way for orchids to change soil fungal communities in the habitat.…”

Section: Discussionmentioning

confidence: 99%

Habitat ecological characteristics and soil fungal community structure of Paphiopedilum subgenus Brachypetalum Hallier (Orchidaceae) plants in Southwest China

Tian

et al. 2023

Plant Signaling & Behavior

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Species of the subgenus Brachypetalum are the most primitive, most ornamental and most threatened group in the Orchid. This study revealed the ecological characteristics, soil nutrient characteristics and soil fungal community structure of habitats of the subgenus Brachypetalum in Southwest China. Lays a foundation for research on the wild populations and conservation Brachypetalum . The results showed that species of the subgenus Brachypetalum preferred a cool and humid environment, grew in scattered or aggregated form in narrow negative terrain, mainly in humic soil. The soil physical and chemical properties and soil enzyme activity indexes of the habitats were significantly different among different species, and the soil properties of different distribution points of the same species also varied greatly. There were significant differences in the soil fungal community structure among the habitats of different species. Basidiomycetes and ascomycetes were the main fungi in habitats of subgenus Brachypetalum species, and their relative abundance varied among different species. The functional groups of soil fungi were mainly symbiotic fungi and saprophytic fungi. LEfSe analysis found that there were different numbers and species of biomarkers in the habitats of subgenus Brachypetalum species, indicating that the habitat preference characteristics of each species in subgenus Brachypetalum were reflected in the fungal community. It was found that environmental factors had an impact on the changes in soil fungal communities in the habitats of subgenus Brachypetalum species, with climatic factors having the highest explanation rate (20.96%). Soil properties were significantly positively or negatively correlated with a variety of dominant soil fungal groups. Conclusions: The results of this study lay the foundation for the study of the habitat characteristics of wild populations of subgenus Brachypetalum and provides data to support in situ and ex situ conservation in the future.

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Section: Discussionmentioning

confidence: 99%

Habitat ecological characteristics and soil fungal community structure of Paphiopedilum subgenus Brachypetalum Hallier (Orchidaceae) plants in Southwest China

Tian

et al. 2023

Plant Signaling & Behavior

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“…In recent years, with increasing research on ORM, a number of mycorrhizal fungi have been isolated and confirmed to promote the seed germination or seedling development of other orchid medicinal plants, such as Dendrobium spp . ( Tang et al, 2022 , Zhang, Li, Chen, Guo, & Lee, 2020 , Zhang et al, 2020 ), Bletilla striata (Thunb. ex A. Murray) Rchb.…”

Section: How Does Orm Benefit Host Plants?mentioning

confidence: 99%

“…And why the promoting effects of fungi on seed germination are unstable (between laboratory and field), are these phenomena related to the signal recognition and establishment of symbiotic relationship between fungi and seeds under the “poor” symbiotic germination conditions in the laboratory? Is the specificity of fungi for seed germination related to the establishment of a symbiotic relationship between fungi and plant seeds and signal recognition ( Huang, Zi, Lin, & Gao, 2018 , Tang et al, 2022 , Yamamoto et al, 2017 )? Further study of the symbiosis mechanism between fungi and seeds is important for addressing these questions and applying mycorrhizal symbiosis.…”

Section: How Does Orm Benefit Host Plants?mentioning

confidence: 99%

Perspective and challenges of mycorrhizal symbiosis in orchid medicinal plants

Leng,

Hou,

Xing

et al. 2024

Chinese Herbal Medicines

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Symbiotic Culture of Three Closely Related Dendrobium Species Reveals a Growth Bottleneck and Differences in Mycorrhizal Specificity at Early Developmental Stages

et al. 2022

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Mycorrhizal specificity, i.e., the range of fungi allowing mycorrhizal partnerships, differs among orchid species, but that at early developmental stages is unclear. We investigated whether mycorrhizal specificity during seed germination and seedling development differs among three Dendrobium species, D. officinale, D. okinawense and D. moniliforme, in vitro. Nine mycorrhizal fungal strains were obtained from the roots of these species and cultured with a seed of each Dendrobium species. Five to eight fungal strains stimulated seed germination, whereas one to four fungal isolates significantly promoted protocorm development in the three species. To evaluate effects on leafy seedling growth, seedlings obtained from asymbiotic culture were cultured with nine fungal isolates. D. officinale and D. okinawense showed specificity for a single Serendipitaceae or Tulasnellaceae isolate, whereas D. moniliforme exhibited specificity for three isolates of Serendipitaceae and Tulasnellaceae. Therefore, the three Dendrobium species had a growth bottleneck from seed germination to the protocorm stage, and mycorrhizal specificity of protocorm growth and seedling development in vitro varied among the species. Our findings imply divergent mycorrhizal specificity in Dendrobium species at early developmental stages. This study provides insights into the diversity of orchid mycorrhizal specificity, as well as valuable information for conservation of endangered orchids.

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Potential Specificity Between Mycorrhizal Fungi Isolated from Widespread Dendrobium spp. and Rare D. huoshanense Seeds

Cited by 4 publications

References 46 publications

Habitat ecological characteristics and soil fungal community structure of Paphiopedilum subgenus Brachypetalum Hallier (Orchidaceae) plants in Southwest China

Habitat ecological characteristics and soil fungal community structure of Paphiopedilum subgenus Brachypetalum Hallier (Orchidaceae) plants in Southwest China

Perspective and challenges of mycorrhizal symbiosis in orchid medicinal plants

Symbiotic Culture of Three Closely Related Dendrobium Species Reveals a Growth Bottleneck and Differences in Mycorrhizal Specificity at Early Developmental Stages

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