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

Deveautour, Coline; Donn, Suzanne; Power, Sally A.; Bennett, Alison E.; Powell, Jeff R.

doi:10.1111/mec.14536

Cited by 71 publications

(42 citation statements)

References 61 publications

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“…MAP has a small but significant influence on structuring phyllosphere fungal communities (Table 1), which is in line with the patterns observed in foliar fungal communities of Metrosideros polymorpha across a Hawaiian landscape 13 , in AMF community assembly associated with four plant species in a grassland ecosystem 108 , and in endophytic fungal community of Panicum hallii across the Edwards Plateau 109 . Precipitation can directly influence the fungal species pool, and can also exert important influence on ecosystem processes including respiration, decomposition and plant productivity, as well as may indirectly affect plant-associated fungal communities via changes in the local host community properties 110 .…”

Section: Discussionsupporting

confidence: 80%

Mainland and island populations of Mussaenda kwangtungensis differ in their phyllosphere fungal community composition and network structure

Qian

et al. 2020

Sci Rep

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We compared community composition and co-occurrence patterns of phyllosphere fungi between island and mainland populations within a single plant species (Mussaenda kwangtungensis) using highthroughput sequencing technology. We then used 11 microsatellite loci for host genotyping. The island populations differed significantly from their mainland counterparts in phyllosphere fungal community structure. Topological features of co-occurrence network showed geographic patterns wherein fungal assemblages were less complex, but more modular in island regions than mainland ones. Moreover, fungal interactions and community composition were strongly influenced by the genetic differentiation of host plants. This study may advance our understanding of assembly principles and ecological interactions of phyllosphere fungal communities, as well as improve our ability to optimize fungal utilization for the benefit of people. The phyllosphere provides a unique habitat for a diverse community of microorganisms that live within or on the surface of leaves 1. Phyllosphere fungi have been considered pivotal determinants of host-plant fitness, productivity, and ecosystem functioning 2,3. For example, phyllosphere fungi may confer salt, heat or herbivory tolerance to host plants 4-6 , they may potentially be a source of plant diseases due to the pathogenic phases in their life cycles 7,8 , or they may act as initial decomposers of leaf litter and play important roles in nutrient cycling 9,10. With advances in high-throughput sequencing technologies where DNA samples can be extracted directly from leaves, phyllosphere fungal communities have been examined to determine the community composition and potential drivers of this high diversity 11. Yang et al. 12 found that leaf carbon was the main driver of changes for the foliar fungal community composition of Betula ermanii along a subalpine timberline. Zimmerman et al. 13 showed that climate factors such as temperature and rainfall strongly structured fungal communities in the leaves of Metrosideros polymorpha across a Hawaiian landscape. A different study conducted in tropical lowland rainforests focused on the factors shaping the community structure of phyllosphere fungi and found that plant traits and taxonomy were critical factors 14. Moreover, several studies have explored the relationship between the genetic identity of a conspecific host and the community composition of its phyllosphere fungi, but no consensus was established. Variation in phyllosphere fungal community composition in Fagus sylvatica and Mussaenda pubescens var. alba was mostly explained by host genotype 15,16. In contrast, plant genotype had no significant effect on the phyllosphere fungal microbiome of Picea glauca 17. Microorganisms often vary across trophic modes and functionally distinct niches, which allows them to co-exist and to form complex ecological networks comprising microbial members that interact with each other 18,19. A comprehensive exploration of co-occurrence networks is critical to understanding t...

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Section: Discussionsupporting

confidence: 80%

Mainland and island populations of Mussaenda kwangtungensis differ in their phyllosphere fungal community composition and network structure

Qian

et al. 2020

Sci Rep

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“…The outcome of species interaction is altered by climate change effects [144]. For example, fungal communities have been altered because of changes in soil moisture and temperature [145]. It has been reported that drought stress increases root colonization by arbuscular mycorrhizal fungi [146], representing an important strategy for water stress management [147].…”

Section: Effects Of Drought On Plant-soil Microbe Interactionsmentioning

confidence: 99%

Root Response to Drought Stress in Rice (Oryza sativa L.)

Kim

Chung

Lee

et al. 2020

IJMS

213

139

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The current unpredictable climate changes are causing frequent and severe droughts. Such circumstances emphasize the need to understand the response of plants to drought stress, especially in rice, one of the most important grain crops. Knowledge of the drought stress response components is especially important in plant roots, the major organ for the absorption of water and nutrients from the soil. Thus, this article reviews the root response to drought stress in rice. It is presented to provide readers with information of use for their own research and breeding program for tolerance to drought stress in rice.

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“…Within the existing range, the ecological outcome of plant–soil microbe interactions depends not only on plant genes, microbial genes and microbial species composition but also on the environmental context (Hoeksema & Forde, ; Laine, ; Thompson, ). For example, soil moisture and temperature have been shown to alter fungal communities (Deveautour, Donn, Power, Bennett, & Powell, ; Rasmussen et al, ) and may thereby change feedbacks between plants and fungi, for example, if communities change from one more dominated by beneficial microbes to one more dominated by antagonistic microbes or vice versa. As such, environmental change can disrupt both plant local adaptation and plant maladaptation to the local soil microbial community within the present range.…”

Section: Introductionmentioning

confidence: 99%

The impact of elevated temperature and drought on the ecology and evolution of plant–soil microbe interactions

2019

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1. Climate change is shifting the distribution of species, and may have a profound impact on the ecology and evolution of species interactions. However, we know little about the impact of increasing temperature and changing rainfall patterns on the interactions between plants and their beneficial and antagonistic root symbionts.2. Here, we used a reciprocal multifactorial growth chamber experiment with seeds and soil microbial communities from three origins to investigate the impact of temperature and soil moisture on the growth, arbuscular mycorrhizal (AM) fungal colonization and root-associated fungal community of a perennial herb. Moreover, we tested whether plants and AM fungi performed better or worse when plants were grown with their local soil biota, for example, due to plant adaptation or changes in the genetic or species composition of the soil microbial community.3. Temperature and soil moisture generally increased plant growth, whereas temperature but not soil moisture increased AM fungal colonization. The strength and direction of the plants' response to temperature were dependent on soil moisture and differed among plant populations, and AM fungal colonization was further affected by the origin of the soil microbial community. The root-associated fungal community structure was impacted by temperature, soil moisture and the soil microbial origin, with interactive effects between the microbial origin and the abiotic environment. Plant biomass was lower when plants were grown with their local soil microbes, potentially due to intraspecific negative plant-soil feedbacks. Synthesis.Our findings indicate that, beyond a relatively uniform increase of plant growth and arbuscular mycorrhizal (AM) fungal colonization with increasing temperature, plants and root-associated fungi of different origins will vary in their response to climate change (i.e. elevated temperature and shifts in rainfall). This may create pronounced, but difficult to predict, spatial and temporal variation in the ecology and evolution of plant-microbe interactions with a changing climate. K E Y W O R D S abiotic and biotic factors, arbuscular mycorrhizal fungi, local adaptation, Plantago lanceolata, plant-soil (below-ground) interactions, plant-soil feedback, root-associated fungi, soil moisture This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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

Cited by 71 publications

References 61 publications

Mainland and island populations of Mussaenda kwangtungensis differ in their phyllosphere fungal community composition and network structure

Mainland and island populations of Mussaenda kwangtungensis differ in their phyllosphere fungal community composition and network structure

Root Response to Drought Stress in Rice (Oryza sativa L.)

The impact of elevated temperature and drought on the ecology and evolution of plant–soil microbe interactions

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