Seasonal and temporal dynamics of arbuscular mycorrhizal and dark septate endophytic fungi in a tallgrass prairie ecosystem are minimally affected by nitrogen enrichment

Mycorrhiza ◽  
2008 ◽  
Vol 18 (3) ◽  
pp. 145-155 ◽  
Author(s):  
Keerthi Mandyam ◽  
Ari Jumpponen
Keyword(s):  
Endophytic Fungi ◽  
Tallgrass Prairie ◽  
Temporal Dynamics ◽  
Arbuscular Mycorrhizal ◽  
Nitrogen Enrichment ◽  
Prairie Ecosystem

Temporal dynamics of mycorrhizal fungal communities and co-associations with grassland plant communities following experimental manipulation of rainfall

2019 ◽  
Author(s):  
Coline Deveautour ◽  
Sally Power ◽  
Kirk Barnett ◽  
Raul Ochoa-Hueso ◽  
Suzanne Donn ◽  
...  
Keyword(s):  
Community Composition ◽  
Plant Community ◽  
Plant Communities ◽  
Fungal Community ◽  
Mycorrhizal Fungi ◽  
Temporal Dynamics ◽  
Arbuscular Mycorrhizal ◽  
Fungal Communities ◽  
Plant Responses ◽  
Rainfall Regimes

Climate models project overall a reduction in rainfall amounts and shifts in the timing of rainfall events in mid-latitudes and sub-tropical dry regions, which threatens the productivity and diversity of grasslands. Arbuscular mycorrhizal fungi may help plants to cope with expected changes but may also be impacted by changing rainfall, either via the direct effects of low soil moisture on survival and function or indirectly via changes in the plant community. In an Australian mesic grassland (former pasture) system, we characterised plant and arbuscular mycorrhizal (AM) fungal communities every six months for nearly four years to two altered rainfall regimes: i) ambient, ii) rainfall reduced by 50% relative to ambient over the entire year and iii) total summer rainfall exclusion. Using Illumina sequencing, we assessed the response of AM fungal communities sampled from contrasting rainfall treatments and evaluated whether variation in AM fungal communities was associated with variation in plant community richness and composition. We found that rainfall reduction influenced the fungal communities, with the nature of the response depending on the type of manipulation, but that consistent results were only observed after more than two years of rainfall manipulation. We observed significant co-associations between plant and AM fungal communities on multiple dates. Predictive co-correspondence analyses indicated more support for the hypothesis that fungal community composition influenced plant community composition than vice versa. However, we found no evidence that altered rainfall regimes were leading to distinct co-associations between plants and AM fungi. Overall, our results provide evidence that grassland plant communities are intricately tied to variation in AM fungal communities. However, in this system, plant responses to climate change may not be directly related to impacts of altered rainfall regimes on AM fungal communities. Our study shows that AM fungal communities respond to changes in rainfall but that this effect was not immediate. The AM fungal community may influence the composition of the plant community. However, our results suggest that plant responses to altered rainfall regimes at our site may not be resulting via changes in the AM fungal communities.

Arbuscular mycorrhizal and dark septate endophytic fungi at 5,500 m on a glacier forefront in the Qinghai-Tibet Plateau, China

Symbiosis ◽  
2013 ◽  
Vol 60 (2) ◽  
pp. 101-105 ◽  
Author(s):  
Jianbin Pan ◽  
Yongjun Liu ◽  
Xinhua He ◽  
Shichang Kang ◽  
Yuhong Hou ◽  
...  
Keyword(s):  
Endophytic Fungi ◽  
Arbuscular Mycorrhizal ◽  
Tibet Plateau ◽  
Glacier Forefront ◽  
Qinghai Tibet Plateau

scholarly journals The Effect of Mycorrhizal Inoculum and Phosphorus Treatment on Growth and Flowering of Ajania (Ajania pacifica (Nakai) Bremer et Humphries) Plant

Horticulturae ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 178
Author(s):  
Matej Vosnjak ◽  
Matevz Likar ◽  
Gregor Osterc
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Flowering Time ◽  
Endophytic Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Growing Season ◽  
Shoot Length ◽  
Available Phosphorus ◽  
Growing Seasons ◽  
Number Of Shoots

The influence of mycorrhizal inoculum in combination with different phosphorus treatments on growth and flowering parameters of Ajania (Ajania pacifica (Nakai) Bremer et Humphries) plants was investigated in two growing seasons (2015 and 2016). Plants of the cultivar ‘Silver and Gold’ were transplanted into pots either with added mycorrhizal inoculum or without inoculum and assigned to four phosphorus treatments. Mycorrhizal colonization was assessed by evaluating the frequency of colonization, intensity of colonization and density of fungal structures (arbuscules, vesicles, coils and microsclerotia) in the roots. During the growing season, the content of plant available phosphorus in the soil was analyzed, and shoot length, number of shoots, number of inflorescences, number of flowers and flowering time were evaluated. Inoculated Ajania plants were successfully colonized with arbuscular mycorrhizal fungi and dark septate endophytic fungi. In the root segments, hyphae were mainly observed, as well as vesicles, coils, arbuscules and microsclerotia, but in lower density. The density of fungal structures did not differ among phosphorus treatments, but did differ between years, with a higher density of fungal structures in 2016. Mycorrhizal plants developed higher number of shoots in 2016, higher number of inflorescences, higher number of flowers, and they flowered longer compared to uninoculated plants.

scholarly journals Lack of eutrophication in a tallgrass prairie ecosystem over 27 years

Ecology ◽  
2014 ◽  
Vol 95 (5) ◽  
pp. 1225-1235 ◽  
Author(s):  
Kendra K. McLauchlan ◽  
Joseph M. Craine ◽  
Jesse B. Nippert ◽  
Troy W. Ocheltree
Keyword(s):  
Tallgrass Prairie ◽  
Prairie Ecosystem

Temporal dynamics of plant community regeneration sources during tallgrass prairie restoration

Plant Ecology ◽  
2013 ◽  
Vol 214 (9) ◽  
pp. 1169-1180 ◽  
Author(s):  
Jason E. Willand ◽  
Sara G. Baer ◽  
David J. Gibson ◽  
Ryan P. Klopf
Keyword(s):  
Plant Community ◽  
Tallgrass Prairie ◽  
Temporal Dynamics ◽  
Prairie Restoration ◽  
Tallgrass Prairie Restoration

scholarly journals NATIVE MICROBIOTA AND ARBUSCULAR MYCORRHIZAL FUNGI ON GROWTH OF Paspalum millegrana SCHRAD

2019 ◽  
Vol 32 (2) ◽  
pp. 345-353
Author(s):  
JOHNY DE JESUS MENDONÇA ◽  
LARISSA DE SOUZA GOIS ◽  
JACILENE FRANCISCA SOUZA SANTOS ◽  
TAMIRIS APARECIDA DE CARVALHO SANTOS ◽  
FRANCISCO SANDRO RODRIGUES HOLANDA ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Endophytic Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Mycorrhizal Colonization ◽  
Volume Number ◽  
The Family ◽  
Symbiotic Fungi ◽  
Shoot Mass ◽  
Gigaspora Albida

ABSTRACT Paspalum millegrana grass is a member of the family Poaceae native to the Americas, whose interaction with native symbiotic fungi has not yet been reported. The objective of this study was to evaluate the interactions between the native microorganisms and arbuscular mycorrhizal fungi in the development of P. millegrana Schrad. The experimental design was completely randomized with seven treatments (control, without AMF; native microbial inoculant; native + UFLA05 Gigaspora albida; native + UFLA351 Rhizoglomus clarum; native + UFLA372 Claroideoglomus etunicatum; native + UFLA401 Acaulospora morrowiae, and a mix of all treatments). The substrate was autoclaved sand and coconut powder at 2:1, with eight repetitions. The variables analyzed were: mycorrhizal colonization, dark septate endophytic fungi colonization, number of mycorrhizal spores, dry shoot mass, dry root mass, root length and volume, number of tiller and mycorrhizal dependence. Mycorrhizal arbuscular fungi and dark septate endophytic fungi colonized P. millegrana. The sporulation of arbuscular mycorrhizal fungi associated with P. millegrana was influenced by mycorrhizal colonization, depending on the fungus-plant interaction. P. millegrana was responsive to native + UFLA05 and native + UFLA351. No correlation between tiller emergence and mycorrhizal colonization of P. millegrana was observed.

Land use dynamics within the tallgrass prairie ecosystem: the case for the Conservation Reserve Program (CRP)

2020 ◽  
Vol 13 (3) ◽  
pp. 289-300
Author(s):  
Heidi Berger ◽  
Clinton K. Meyer ◽  
Anna Mummert ◽  
Lauren Tirado ◽  
Luis Saucedo ◽  
...  
Keyword(s):  
Land Use ◽  
Tallgrass Prairie ◽  
Conservation Reserve Program ◽  
Land Use Dynamics ◽  
Prairie Ecosystem

scholarly journals Colonization by arbuscular mycorrhizal and fine endophytic fungi in herbaceous vegetation in the Canadian High Arctic

2004 ◽  
Vol 82 (11) ◽  
pp. 1547-1556 ◽  
Author(s):  
Pål Axel Olsson ◽  
Bente Eriksen ◽  
Anders Dahlberg
Keyword(s):  
Endophytic Fungi ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Ellesmere Island ◽  
Inoculum Potential ◽  
Devon Island ◽  
Dark Septate Fungi ◽  
Banks Island ◽  
Glomus Tenue ◽  
Ellef Ringnes Island

The occurrence of arbuscular mycorrhizal (AM) fungi was surveyed along a latitudinal gradient in Arctic Canada including Banks Island (73°N), Devon Island (74°N), Ellesmere Island (76°N), and the Magnetic North Pole at Ellef Ringnes Island (78°N). At Banks Island, AM fungi were present and colonized at a high intensity in all specimens of Potentilla hookeriana Lehm. – Potentilla pulchella R.Br., Arnica angustifolia Vahl, and Erigeron uniflorus L. ssp. eriocephalus (Vahl ex Hornen.) Cronq. sampled. The soil collected under these plants showed a high inoculum potential when tested at greenhouse conditions using Plantago lanceolata L. as a bait plant. Occasional occurrence of AM fungi was recorded in Festuca hyperborea Holmen ex Frederiksen, Trisetum spicatum (L.) Richt., and Potentilla hookeriana – Potentilla pulchella at Devon Island. Despite the fact that potential AM plants are present, no AM was found at the two most northern sites, Ellesmere Island and Ellef Ringnes Island. There seems to be climatic or dispersal limitations to AM colonization at these northern sites. Fine endophytic fungi, formerly named Glomus tenue (Grenall) I.R. Hall, were recorded at all four sites, but most frequently at Banks Island. We thereby provide further evidence that fine endophytes are more frequent in harsh climatic conditions than AM fungi. There was a relatively high proportion of nonmycorrhizal plant species at all sites, and this proportion increased towards the north.Key words: arctic, arbuscular mycorrhiza, fine endophytes, dark septate fungi.

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