Rhizosphere engineering: Enhancing sustainable plant ecosystem productivity

Ahkami, Amir H.; White, Richard Allen; Handakumbura, Pubudu; Jansson, Christer

doi:10.1016/j.rhisph.2017.04.012

Cited by 289 publications

(154 citation statements)

References 144 publications

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“…Our field results were validated with a greenhouse experiment where we grew a subset of the plant genotypes in both autoclaved (sterilized) soil and unsterilized soil directly from the Carrington field. Greenhouse experiments in unsterilized (native) field soil showed similar results to field conditions, but in sterilized soil resistant plant genotypes performed much worse in the Sclerotinia assay, to the extent that nearly all resistance was eliminated, thus adding to the data that a healthy rhizosphere plays an important role in a plant's ability to resist infection [45][46][47] .…”

Section: Discussionmentioning

confidence: 77%

Heritable associations with microbial communities are essential for necrotrophic pathogen resistance

Pogoda

Reinert

Talukder

et al. 2020

Preprint

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Host-microbe interactions are increasingly recognized as important drivers of organismal health, growth, longevity, and community-scale ecological processes. However, less is known about how genetic variation affects hosts’ associated microbiomes and downstream phenotypes. We demonstrate that sunflower (Helianthus annuus) harbors substantial, heritable variation in microbial communities under field conditions. We show that microbial communities explain up to 77.5% of the heritable variation in resistance to root infection caused by the necrotrophic pathogen Sclerotinia sclerotiorum, and that plants grown in sterilized soil showed almost complete elimination of pathogen resistance. Association mapping revealed 69 genetic locations related to microbial abundance and Sclerotinia resistance. Although the genetic architecture is complex and quantitative, we have, in large part, elucidated previously unexplained genetic variation for resistance to this pathogen. This suggests new targets for plant breeding and demonstrates the potential for heritable microbial associations to play important roles in defense in natural and human-altered environments.

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Section: Discussionmentioning

confidence: 77%

Heritable associations with microbial communities are essential for necrotrophic pathogen resistance

Pogoda

Reinert

Talukder

et al. 2020

Preprint

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“…As shown in Figures 2-5, in most cases, the effluent quality was further improved by the presence of vegetation. Some studies reported that the role of aerobic bacteria such as Rhizosphere in the uptake of nutrients (phosphate and nitrate) and oxygen transport is effective (22)(23)(24)(25). Several biological and physicochemical reactions are involved in the transformation of nitrogen into different biologically useful forms.…”

Section: Discussionmentioning

confidence: 99%

Removal efficiency of nitrate, phosphate, fecal and total coliforms by horizontal subsurface flow-constructed wetland from domestic wastewater

Kalankesh

Rodríguez‐Couto

Shahama

et al. 2019

Environ Health Eng Manag

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Background: Constructed wetlands are systems designed based on the utilization of natural processes, including vegetation, soil, and their associated microbial assemblage to assist in treating different types of wastewater. Methods: Two local Appalachian plants (Louis latifolia and Phragmites australis) were planted into smallscale constructed wetlands to treat domestic wastewater in the North of Iran. The influent wastewater and the effluent from each wetland were sampled daily for 120 days. Experiments were conducted based on the mean ± standard deviation (SD) by analysis of variance (ANOVA). Results: It was found that nitrate, phosphate, fecal and total coliforms were reduced by 84.4%, 94.4%, 96.3%, 93.9% for P. australis and 73.3%, 64.0%, 94.4%, 92.1% for L. latifolia, respectively. Conclusion: According to the results, by using the HF-CW technology with L. latifolia and P. australis plants, the treated wastewater fully meets the wastewater discharge parameters of WHO standards.

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“…Organic carbon substrates and phosphorus compounds exhibit enormous ranges and are persistent abiotic stressors affecting microbial survival and growth in soils [49]. However, carbon and phosphorus limitation in the rhizosphere can be alleviated by root exudates and soil pH neutralization [50]. Decreased nitrogen availability in the rhizosphere also induces microbial DON stress16.…”

Section: Community Assembly Mechanisms Of C Sinensis Microbiomes Fromentioning

confidence: 99%

Trade-off between stochastic and deterministic processes shifts from soil to leaf microbiome of tea plant

Xu¹,

Stirling²,

Wen-bing³

et al. 2020

Preprint

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Background : Plant microbiome plays an important role in promoting plant health and production. However, even though the microbiomes in various compartments have been widely investigated, the association across plant compartments from soil to leaf remain unclear. Tea is a globally popular beverage due to its flavor and health benefits associating with secondary metabolites; the microbiomes of tea plant ( Camellia sinensis ) play a significant role in the production of these secondary metabolites. Here, we sequenced the microbiomes of bulk and rhizosphere soils, roots and leaves of C. sinensis collected from tea plantations across over 2000 km to investigate the association and driving mechanisms for microbiomes in the compartments. Results : Camellia sinensis microbiomes differed between the compartments with α-diversity gradually decreasing from soils to roots and leaves. The core leaf microbiome comprised Bacilli, Sphingobacteriia and α-Proteobacteria, which we suggest might ascendingly migrate from soils to leaves. Microbial community assembly processes were dominated by deterministic processes in bulk and rhizosphere soils; these assembly processes were dominated by stochastic processes in roots and leaves. Dispersal limitation was stronger in old leaves than in other compartments. Amino acids were also critical drivers for environmental selection. The microbiomes in C. sinensis roots and leaves possessed a lower intensity of microbial associations and more negative microbial associations than in bulk and rhizosphere soils, suggesting that the contribution of microbial interactions varied in different compartments. Conclusion : In summary, there is a trade-off between stochastic and deterministic processes in microbiomes community assembly along from soil to leaf of C. sinensis . These results provide valuable information for understanding the associations and driving mechanism of microbiomes in various C. sinensis compartments, which could be used to predict C. sinensis microbiome and harness its power to improve tea production and quality.

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Rhizosphere engineering: Enhancing sustainable plant ecosystem productivity

Cited by 289 publications

References 144 publications

Heritable associations with microbial communities are essential for necrotrophic pathogen resistance

Heritable associations with microbial communities are essential for necrotrophic pathogen resistance

Removal efficiency of nitrate, phosphate, fecal and total coliforms by horizontal subsurface flow-constructed wetland from domestic wastewater

Trade-off between stochastic and deterministic processes shifts from soil to leaf microbiome of tea plant

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