Ecological stoichiometry and fungal community turnover reveal variation among mycorrhizal partners in their responses to warming and drought

2021 ◽  
Author(s):  
Haiyang Zhang ◽  
Amber C. Churchill ◽  
Ian C. Anderson ◽  
Chioma Igwenagu ◽  
Sally A. Power ◽  
...  
Keyword(s):  
Fungal Community ◽  
Ecological Stoichiometry ◽  
Community Turnover

scholarly journals Endophytic Fungal Community of Tobacco Leaves and Their Potential Role in the Formation of “Cherry-Red” Tobacco

2021 ◽  
Vol 12 ◽  
Author(s):  
Yonglei Jiang ◽  
Xing Chen ◽  
Gaokun Zhao ◽  
Jiahong Liu ◽  
Yan Xie ◽  
...  
Keyword(s):  
Fungal Community ◽  
High Throughput Sequencing ◽  
Potential Role ◽  
Local Community ◽  
Community Diversity ◽  
Tobacco Leaves ◽  
Mature Leaves ◽  
Community Turnover ◽  
Robust Network ◽  
Network Complex

“Cherry-red” tobacco is the superior variant of tobacco, appearing with the apperance of red dapples on cured leaves due to the demethylation of nicotine to nornicotine during maturation and curing. Fungi are known to have the capacity to convert nicotine to nornicotine. However, an endophytic fungal community of “cherry-red” tobacco has never been reported to our best knowledge. Here, we sampled mature leaves from both “cherry-red” and ordinary tobacco at lower, center, and upper plant sections, and we analyzed the ITS diversity using high-throughput sequencing. Results revealed a significantly different fungal community of foliar endophyte in “cherry-red” and ordinary tobacco. In comparison to the ordinary control, higher diversity and a co-occurrence network complex were found in “cherry-red” samples, especially in the center and upper leaves, where the red dapples mainly emerged. More taxa were enriched in the “cherry-red” than ordinary tobacco leaves at all plant sections. In particular, Aspergillus, some strains of which are reported capable of converting nicotine to nornicotine, was specifically enriched in upper “cherry-red” tobacco leaves, which showed most red dapples after curing. A less robust network structure was detected in the “cherry-red” tobacco compared to ordinary tobacco. The nearest taxon index (NTI) and β NTI indicated that the local community structuration of tobacco endophytic fungi mainly driven by deterministic process, while the community turnover among plant sections was stochastic. In conclusion, our study provides the earliest information of endophytic fungal community in “cherry-red” tobacco leaf, and the community diversity, composition, and network features are synchronously varied with the appearance of red dapples, which is suggestive of their relationship to the formation of “cherry-red” tobacco.

Biodiversity of fungal community associated to lichens active against Candida biofilms

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
P Jargeat ◽  
M Girardot ◽  
C Rouger ◽  
W Aucher ◽  
M Millot ◽  
...  
Keyword(s):  
Fungal Community

Experimentally altered rainfall regimes and host root traits affect grassland arbuscular mycorrhizal fungal communities

2019 ◽  
Author(s):  
Coline Deveautour ◽  
Suzanne Donn ◽  
Sally Power ◽  
Kirk Barnett ◽  
Jeff Powell
Keyword(s):  
Fungal Community ◽  
Community Assembly ◽  
Root Length ◽  
Specific Root Length ◽  
Root Traits ◽  
Arbuscular Mycorrhizal ◽  
Fungal Communities ◽  
Rainfall Regime ◽  
Precipitation Regimes ◽  
Rainfall Regimes

Future climate scenarios predict changes in rainfall regimes. These changes are expected to affect plants via effects on the expression of root traits associated with water and nutrient uptake. Associated microorganisms may also respond to these new precipitation regimes, either directly in response to changes in the soil environment or indirectly in response to altered root trait expression. We characterised arbuscular mycorrhizal (AM) fungal communities in an Australian grassland exposed to experimentally altered rainfall regimes. We used Illumina sequencing to assess the responses of AM fungal communities associated with four plant species sampled in different watering treatments and evaluated the extent to which shifts were associated with changes in root traits. We observed that altered rainfall regimes affected the composition but not the richness of the AM fungal communities, and we found distinctive communities in the increased rainfall treatment. We found no evidence of altered rainfall regime effects via changes in host physiology because none of the studied traits were affected by changes in rainfall. However, specific root length was observed to correlate with AM fungal richness, while concentrations of phosphorus and calcium in root tissue and the proportion of root length allocated to fine roots were correlated to community composition. Our study provides evidence that climate change and its effects on rainfall may influence AM fungal community assembly, as do plant traits related to plant nutrition and water uptake. We did not find evidence that host responses to altered rainfall drive AM fungal community assembly in this grassland 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.

Effects of crop rotation with wild rocket on cucumber seedling rhizosphere fungal community composition

2019 ◽  
Vol 47 (1) ◽  
pp. 83-92 ◽  
Author(s):  
X. Jin ◽  
D. L. Li ◽  
F Z. Wu ◽  
K. Pan ◽  
X G. Zhou
Keyword(s):  
Community Composition ◽  
Crop Rotation ◽  
Fungal Community ◽  
Cucumber Seedling ◽  
Fungal Community Composition ◽  
Wild Rocket

Relationships between species diversity and C, N and P ecological stoichiometry in plant communities of sub-alpine meadow

2014 ◽  
Vol 37 (11) ◽  
pp. 979-987 ◽  
Author(s):  
Jun-Qiang CHEN ◽  
Rui ZHANG ◽  
Yao-Chen HOU ◽  
Li-Na MA ◽  
Lu-Ming DING ◽  
...  
Keyword(s):  
Species Diversity ◽  
Plant Communities ◽  
Ecological Stoichiometry ◽  
Alpine Meadow

Corrigendum to “Identifying the mechanisms that shape fungal community and metacommunity patterns in Yunnan, China” [Fungal Ecol. 42 (2019) 100862]

2021 ◽  
Vol 50 ◽  
pp. 101044
Author(s):  
Kingsly C. Beng ◽  
Richard T. Corlett
Keyword(s):  
Fungal Community
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