Abstract
We investigated the effects of ericoid mycorrhizal fungi (ERMFs) or dark septate endophytic fungi (DSEFs) on secondary metabolite production and growth promotion of Rhododendron pseudochrysanthum. The strains Rf9 (Cryptosporiopsis sp.) and Rf32 (Cryptosporiopsis sp.) were isolated from Rhododendron formosanum, whereas strains Rp7 (Phialocephala fortinii), Rp9 (Hyaloscyphaceae sp.), and Rp28 (Phialocephala fortinii) were isolated from R. pseudochrysanthum (R. morii). We studied their molecular relationships using phylogenetic analysis and divided these five strains into three groups (Cryptosporiopsis sp., Phialocephala fortinii, and Hyaloscyphaceae sp.). We found that strains Rf9 and Rf32 belonged to ERMFs, which form a hyphal complex with R. pseudochrysanthum, whereas strains Rp7, Rp9, and Rp28 belonged to DSEFs, which form microsclerotia on R. pseudochrysanthum. The endophytic fungi can promote the growth of R. pseudochrysanthum seedlings, and the total fresh weight of inoculated seedlings was higher than that of the control seedlings. In addition, the phytochemical profile showed that the methanolic extract of Rp7-inoculated seedlings had the highest content of rutin, hyperoside, quercitrin, and (2R,3S)-catechin among all inoculated seedlings. In conclusion, DSEFs and ERMFs promoted the growth response and secondary metabolite production of R. pseudochrysanthum seedlings.
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Claims 5
Claim · model-written summary
Five fungal strains fell into three phylogenetic groups.
- Taxon
- Rhododendron pseudochrysanthum
Rhododendron pseudochrysanthumt0 - Outcome
- three groups (Cryptosporiopsis sp., Phialocephala fortinii, and Hyaloscyphaceae sp.)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“divided these five strains into three groups (Cryptosporiopsis sp., Phialocephala fortinii, and Hyaloscyphaceae sp.)”
t0“RHODODENDRON PSEUDOCHRYSANTHUM”
Claim · model-written summary
Rf9 and Rf32 were ericoid mycorrhizal fungi forming a hyphal complex with the plant.
- Taxon
- R. pseudochrysanthumRhododendron pseudochrysanthume0
- Interactor
- ERMFse0symbiont
- Outcome
- form a hyphal complexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strains Rf9 and Rf32 belonged to ERMFs, which form a hyphal complex with R. pseudochrysanthum”
Claim · model-written summary
Rp7, Rp9 and Rp28 were dark septate endophytes forming microsclerotia.
- Taxon
- R. pseudochrysanthumRhododendron pseudochrysanthume0
- Interactor
- DSEFse0symbiont
- Outcome
- form microsclerotiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strains Rp7, Rp9, and Rp28 belonged to DSEFs, which form microsclerotia on R. pseudochrysanthum”
Claim · model-written summary
Inoculated seedlings had higher total fresh weight than controls.
- Taxon
- RHODODENDRON PSEUDOCHRYSANTHUMRhododendron pseudochrysanthumt0
- Treatment
- inoculated seedlingse0
- Interactor
- endophytic fungit1symbiont
- Outcome
- total fresh weighte0
- Direction
- highere0
- Comparator
- control seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total fresh weight of inoculated seedlings was higher than that of the control seedlings”
t0“RHODODENDRON PSEUDOCHRYSANTHUM”
t1“ENDOPHYTIC FUNGI”
Claim · model-written summary
Rp7 inoculation yielded the highest content of four named flavonoids among inoculated seedlings.
- Taxon
- Rhododendron pseudochrysanthumRhododendron pseudochrysanthumt0
- Treatment
- Rp7-inoculatede0
- Interactor
- Rp7e0symbiont
- Outcome
- content of rutin, hyperoside, quercitrine0
- Direction
- higheste0
- Comparator
- all inoculated seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rp7-inoculated seedlings had the highest content of rutin, hyperoside, quercitrin, and (2R,3S)-catechin among all inoculated seedlings”
t0“RHODODENDRON PSEUDOCHRYSANTHUM”