The invader Carpobrotus edulis promotes a specific rhizosphere microbiome across globally distributed coastal ecosystems

Rodríguez-Caballero, G.; Caravaca, F.; Díaz, G.; Torres, Pilar Díez de Revenga; Roldán, A.

doi:10.1016/j.scitotenv.2020.137347

Cited by 34 publications

(24 citation statements)

References 46 publications

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“…Shifts in the microbiome are a potentially important contributor to the dominance of invasive plants. Although there is strong evidence for local adaptation between plants and their home microbiome, invasive plants are relatively novel players, causing disruptions in important plant-microbe interactions by increasing soil microbial activity [31], reducing microbial biomass [32] and diversity [33], increasing nitrification rates [24], and changing microbiome composition [34,35]. These plant-soil feedbacks can benefit the invader [35,36], selectively harm natives [37], and/or benefit other invaders [38].…”

Section: Introductionmentioning

confidence: 99%

“…Although there is strong evidence for local adaptation between plants and their home microbiome, invasive plants are relatively novel players, causing disruptions in important plant-microbe interactions by increasing soil microbial activity [31], reducing microbial biomass [32] and diversity [33], increasing nitrification rates [24], and changing microbiome composition [34,35]. These plant-soil feedbacks can benefit the invader [35,36], selectively harm natives [37], and/or benefit other invaders [38]. While it is known that invaders and natives can harbor distinct microbial communities, and that competition between host plants can affect microbiome composition (and vice versa), little is known of how changes in the abundance of specific microbial taxa may be tied to the competitive dominance of invaders and/or the competitive inferiority of natives.…”

Section: Introductionmentioning

confidence: 99%

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Invasive Grass Dominance over Native Forbs Is Linked to Shifts in the Bacterial Rhizosphere Microbiome

2021

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Rhizosphere microbiomes have received growing attention in recent years for their role in plant health, stress tolerance, soil nutrition, and invasion. Still, relatively little is known about how these microbial communities are altered under plant competition, and even less about whether these shifts are tied to competitive outcomes between native and invasive plants. We investigated the structure and diversity of rhizosphere bacterial and fungal microbiomes of native annual forbs and invasive annual grasses grown in a shade-house both individually and in competition using high-throughput amplicon sequencing of the bacterial 16S rRNA gene and the fungal ITS region. We assessed how differentially abundant microbial families correlate to plant biomass under competition. We find that bacterial diversity and structure differ between native forbs and invasive grasses, but fungal diversity and structure do not. Furthermore, bacterial community structures under competition are distinct from individual bacterial community structures. We also identified five bacterial families that varied in normalized abundance between treatments and that were correlated with plant biomass under competition. We speculate that invasive grass dominance over these natives may be partially due to effects on the rhizosphere community, with changes in specific bacterial families potentially benefiting invaders at the expense of natives.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Invasive Grass Dominance over Native Forbs Is Linked to Shifts in the Bacterial Rhizosphere Microbiome

2021

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“…The microbial communities inhabiting the rhizosphere of the invader Acacia dealbata were shown to vary according to the biogeography and the soil nutrient levels (Kamutando et al, 2017). Rodríguez-Caballero et al (2020b) compared the fungal and bacterial community structure and composition of the rhizosphere of the invader Carpobrotus edulis (L.) L. Bolus with those of co-occurring native plants, across different biogeographical regions. They argued that the invader promoted a specific rhizosphere microbiome globally and that the assemblage of the soil microbiota followed a latitudinal, climatic and edaphic pattern.…”

Section: Introductionmentioning

confidence: 99%

Elevated functional versatility of the soil microbial community associated with the invader Carpobrotus edulis across a broad geographical scale

Caravaca

Torres

Díaz

et al. 2022

Science of The Total Environment

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“…Although there is strong evidence for local adaptation between plants and their home microbiome, invasive plants are relatively novel players, causing disruptions in important plant-microbe interactions [33] by increasing soil microbial activity [34], reducing microbial biomass [35], decreasing microbial diversity [36], increasing nitrification rates [25], and changing microbiome composition [37,38]. These plant-soil feedbacks have the potential to further benefit the invader [38,39], selectively harm natives [40], and/or benefit other invaders [41]. While it is known that invaders and natives may harbor distinct microbial communities, and that competition between host plants can affect microbiome composition (and vice versa), little is known of how changes in the abundance of specific microbial taxa may be tied to the competitive dominance of invaders and/or the competitive inferiority of natives.…”

Section: Introductionmentioning

confidence: 99%

Invasive grass dominance over native forbs is linked to shifts in the bacterial rhizosphere microbiome

LaForgia¹,

Kang

Ettinger

2021

Preprint

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BackgroundRhizosphere microbiomes have received growing attention in recent years for their role in plant health, stress tolerance, soil nutrition, and invasive species dominance. Still, relatively little is known about how these microbial communities are altered under plant competition, and even less about whether these shifts are tied to competitive outcomes between native and invasive plant species. We investigated the structure and diversity of rhizosphere bacterial and fungal microbiomes of native annual forbs and invasive annual grasses individually and in competition using high-throughput amplicon sequencing of the bacterial 16S rRNA gene and the fungal ITS region. We assessed how significant shifts in key microbial families correlate to plant competitive responses through changes in biomass (log competitive response ratios).ResultsWe find that bacterial diversity and structure differ between invasive grasses and native forbs, but fungal diversity and structure do not. Further, bacterial community structures under competition are distinct from both individual forb and grass bacterial community structures. We identified four bacterial families (Burkholderiaceae, Methylophilaceae, Clostridiaceae_1, and Fibrobacteraceae) that varied in relative abundance between treatments and that were significantly correlated with plant competitive responses.ConclusionsInvasive grass dominance may be partially due to effects on the rhizosphere community of native forbs, with changes in specific bacterial families potentially benefiting grasses at the expense of native forbs. Our study underscores the importance of considering plant-rhizosphere interactions for understanding outcomes of plant invasion on grassland ecosystems.

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The invader Carpobrotus edulis promotes a specific rhizosphere microbiome across globally distributed coastal ecosystems

Cited by 34 publications

References 46 publications

Invasive Grass Dominance over Native Forbs Is Linked to Shifts in the Bacterial Rhizosphere Microbiome

Invasive Grass Dominance over Native Forbs Is Linked to Shifts in the Bacterial Rhizosphere Microbiome

Elevated functional versatility of the soil microbial community associated with the invader Carpobrotus edulis across a broad geographical scale

Invasive grass dominance over native forbs is linked to shifts in the bacterial rhizosphere microbiome

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