Abstract
Symbiotic arbuscular mycorrhizal fungi (AMF) have been shown to influence both the diversity and productivity of grassland plant communities. These effects have been postulated to depend on the differential effects of individual mycorrhizal taxa on different plant species; however, so far there are few detailed studies of the dynamics of AMF colonization of different plant species. In this study, we characterized the communities of AMF colonizing the roots of two plant species, Prunella vulgaris and Antennaria dioica, in a Swedish seminatural grassland at different times of the year. The AMF small subunit rRNA genes were subjected to PCR, cloning, sequencing, and phylogenetic analysis. Nineteen discrete sequence types belonging to Glomus groups A and B and to the genus Acaulospora were distinguished. No significant seasonal changes in the species compositions of the AMF communities as a whole were observed. However, the two plant species hosted significantly different AMF communities. P. vulgaris hosted a rich AMF community throughout the entire growing season. The presence of AMF in A. dioica decreased dramatically in autumn, while an increased presence of Ascomycetes species was detected.
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Claims 6
Claim · model-written summary
Nineteen AMF sequence types were distinguished.
GlomusNot reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nineteen discrete sequence types belonging to Glomus groups A and B and to the genus Acaulospora were distinguished.”
Claim · model-written summary
Overall AMF community species composition did not change significantly with season.
Not reportedTaxonSetting
Verbatim
e0“No significant seasonal changes in the species compositions of the AMF communities as a whole were observed.”
Claim · model-written summary
The two plant species hosted significantly different AMF communities.
Not reportedTaxon
Verbatim
e0“the two plant species hosted significantly different AMF communities.”
Claim · model-written summary
Prunella vulgaris hosted a rich AMF community throughout the growing season.
- Taxon
- P. vulgaris
Prunella vulgarise0 - Outcome
- AMF communitye0
- Qualifier
- throughout the entire growing seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. vulgaris hosted a rich AMF community throughout the entire growing season.”
Claim · model-written summary
AMF presence in Antennaria dioica decreased dramatically in autumn.
- Taxon
- A. dioica
Antennaria dioicae0 - Outcome
- presence of AMFe0
- Direction
- decreased dramaticallye0
- Qualifier
- in autumne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of AMF in A. dioica decreased dramatically in autumn”
Claim · model-written summary
Ascomycetes presence in Antennaria dioica increased in autumn.
Not reportedTaxon
Verbatim
e0“while an increased presence of Ascomycetes species was detected.”