Mycoheterotrophic seedling growth of Gentiana zollingeri, a photosynthetic Gentianaceae plant species, in symbioses with arbuscular mycorrhizal fungi.
Arbuscular mycorrhiza
Gentiana zollingeri
Gentianaceae
Glomeraceae
Mycoheterotrophy
Paris-type AM
SSU rDNA
Seed packets
Journal
Journal of plant research
ISSN: 1618-0860
Titre abrégé: J Plant Res
Pays: Japan
ID NLM: 9887853
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
25
01
2021
accepted:
27
04
2021
pubmed:
17
5
2021
medline:
18
8
2021
entrez:
16
5
2021
Statut:
ppublish
Résumé
We found mycoheterotrophic seedling growth (initial mycoheterotrophy) of Gentiana zollingeri, a spring-flowering photosynthetic species of Gentianaceae family. Small seeds (about 300 µm in length) were buried in a habitat by using seed packets, and development of the subterranean seedlings to form shoots, more than 3 cm in length, was observed in symbiosis with arbuscular mycorrhizal (AM) fungi in the dark (i.e., underground of a field). Hyphal coils and their degenerations were observed in the root cortical cells of the subterranean seedlings as well as those of adult plants. Among the mycobionts identified on the basis of partial small subunit rDNA sequences, it was found that AM fungi of a lineage in Glomeraceae dominantly colonized, and the AM fungi were also dominant in adult individuals of G. zollingeri in three habitats separated one another by 17.2, 34.7, and 49.6 km. Though initial mycoheterotrophy in symbioses with AM fungi has been observed in some pteridophytes, this is the first study to demonstrate this type of symbiosis in a photosynthetic seed plant. The mycoheterotrophy means that an energy distribution occurs through the hyphal bridges of AM fungi among different photosynthetic seed plants, which may be important in constructing plant species diversity in some ecosystems.
Identifiants
pubmed: 33993398
doi: 10.1007/s10265-021-01311-6
pii: 10.1007/s10265-021-01311-6
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
921-931Subventions
Organisme : Japan Society for the Promotion of Science
ID : 18H02500
Informations de copyright
© 2021. The Botanical Society of Japan.
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