scholarly journals Diversity and community structure of ericoid mycorrhizal fungi in European bogs and heathlands across a gradient of nitrogen deposition

2020 ◽  
Vol 228 (5) ◽  
pp. 1640-1651 ◽  
Author(s):  
Maarten Van Geel ◽  
Hans Jacquemyn ◽  
Gerrit Peeters ◽  
Kasper Acker ◽  
Olivier Honnay ◽  
...  
2021 ◽  
Vol 11 (11) ◽  
pp. 5297
Author(s):  
Stavros D. Veresoglou ◽  
Leonie Grünfeld ◽  
Magkdi Mola

The roots of most plants host diverse assemblages of arbuscular mycorrhizal fungi (AMF), which benefit the plant hosts in diverse ways. Even though we understand that such AMF assemblages are non-random, we do not fully appreciate whether and how environmental settings can make them more or less predictable in time and space. Here we present results from three controlled experiments, where we manipulated two environmental parameters, habitat connectance and habitat quality, to address the degree to which plant roots in archipelagos of high connectivity and invariable habitats are colonized with (i) less diverse and (ii) easier to predict AMF assemblages. We observed no differences in diversity across our manipulations. We show, however, that mixing habitats and varying connectivity render AMF assemblages less predictable, which we could only detect within and not between our experimental units. We also demonstrate that none of our manipulations favoured any specific AMF taxa. We present here evidence that the community structure of AMF is less responsive to spatio-temporal manipulations than root colonization rates which is a facet of the symbiosis which we currently poorly understand.


BioMetals ◽  
1992 ◽  
Vol 5 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Kurt Haselwandter ◽  
Barbara Dobernigg ◽  
Werner Beck ◽  
G�nther Jung ◽  
Alexander Cansier ◽  
...  

2020 ◽  
Author(s):  
Devin R. Leopold ◽  
Kabir G. Peay ◽  
Peter M. Vitousek ◽  
Tadashi Fukami

AbstractEricaceous plants rely on ericoid mycorrhizal fungi for nutrient acquisition. However, the factors that affect the composition and structure of these fungal communities remain largely unknown. Here, we use a 4.1-myr soil chronosequence in Hawaii to test the hypothesis that changes in nutrient availability with soil age determine the diversity and species composition of fungi associated with ericoid roots. We sampled roots of a native Hawaiian plant, Vaccinium calycinum, and used DNA metabarcoding to quantify changes in fungal diversity and species composition. We also used a fertilization experiment at the youngest and oldest sites to assess the importance of nutrient limitation. We found an increase in diversity and a clear pattern of species turnover across the chronosequence, driven largely by putative ericoid mycorrhizal fungi. Fertilization with nitrogen at the youngest site and phosphorus at the oldest site reduced total fungal diversity, suggesting a direct role of nutrient limitation. Our results also reveal the presence of novel fungal species associated with Hawaiian Ericaceae and suggest a greater importance of phosphorus availability for communities of ericoid mycorrhizal fungi than is generally assumed.


PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e102838 ◽  
Author(s):  
Saad El-Din Hassan ◽  
Terrence H. Bell ◽  
Franck O. P. Stefani ◽  
David Denis ◽  
Mohamed Hijri ◽  
...  

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