Influence of Arabidopsis thaliana accessions on rhizobacterial communities and natural variation in root exudates

Micallef, Shirley A.; Channer, Sheridon; Shiaris, Michael P.; Colón‐Carmona, Adán

doi:10.1093/jxb/erp053

Cited by 415 publications

(286 citation statements)

References 62 publications

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“…Although differences in bacterial diversity were observed, they could not be linked to the expression of induced resistance. Bacterial communities in the rhizosphere of Arabidopsis accessions RLD and WS-0 were distinct from those of Col-0 and five other accessions (Micallef et al 2009). These data do suggest a relation between defense signaling and bacterial community structure, because compared with the other accessions, RLD and WS-0 are relative insensitive to ET and impaired in the expression of ISR (Ton et al 1999;Ton et al 2001).…”

Section: Induced Systemic Resistance Signalingmentioning

confidence: 86%

Impact of root exudates and plant defense signaling on bacterial communities in the rhizosphere. A review

Doornbos

Loon

Bakker

2011

Agron. Sustain. Dev.

566

313

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Despite significant advances in crop protection, plant diseases cause a 20% yield loss in food and cash crops worldwide. Therefore, interactions between plants and pathogens have been studied in great detail. In contrast, the interplay between plants and non-pathogenic microorganisms has received scant attention, and differential responses of plants to pathogenic and non-pathogenic microorganisms are as yet not well understood. Plants affect their rhizosphere microbial communities that can contain beneficial, neutral and pathogenic elements. Interactions between the different elements of these communities have been studied in relation to biological control of plant pathogens. One of the mechanisms of disease control is induced systemic resistance (ISR). Studies on biological control of plant diseases have focused on ISR the last decade, because ISR is effective against a wide range of pathogens and thus offers serious potential for practical applications in crop protection. Such applications may however affect microbial communities associated with plant roots and interfere with the functioning of the root microbiota. Here, we review the possible impact of plant defense signaling on bacterial communities in the rhizosphere. To better assess implications of shifts in the rhizosphere microflora we first review effects of root exudates on soil microbial communities. Current knowledge on inducible defense signaling in plants is discussed in the context of recognition and systemic responses to pathogenic and beneficial microorganisms. Finally, the as yet limited knowledge on effects of plant defense on rhizosphere microbial communities is reviewed and we discuss future directions of research that will contribute to unravel the molecular interplay of plants and their beneficial microflora.

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Section: Induced Systemic Resistance Signalingmentioning

confidence: 86%

Impact of root exudates and plant defense signaling on bacterial communities in the rhizosphere. A review

Doornbos

Loon

Bakker

2011

Agron. Sustain. Dev.

566

313

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“…The composition of plant root exudates can vary by plant species, and even cultivars within a species [119][120][121], resulting in concomitant changes in the composition of the soil microbial community [122][123][124].…”

Section: Specific Approach: Plant Selection and Microbial Amendmentsmentioning

confidence: 99%

Understanding and Enhancing Soil Biological Health: The Solution for Reversing Soil Degradation

et al. 2015

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Our objective is to provide an optimistic strategy for reversing soil degradation by increasing public and private research efforts to understand the role of soil biology, particularly microbiology, on the health of our world's soils. We begin by defining soil quality/soil health (which we consider to be interchangeable terms), characterizing healthy soil resources, and relating the significance of soil health to agroecosystems and their functions. We examine how soil biology influences soil health and how biological properties and processes contribute to sustainability of agriculture and ecosystem services. We continue by examining what can be done to manipulate soil biology to: (i) increase nutrient availability for production of high yielding, high quality crops; (ii) protect crops from pests, pathogens, weeds; and (iii) manage other factors limiting production, provision of ecosystem services, and resilience to stresses like droughts. Next we look to the future by asking what needs to be known about soil biology that is not currently recognized or fully understood and how these needs could be addressed using emerging research tools. We conclude, based on our perceptions of how new knowledge regarding soil biology will help make agriculture more sustainable and productive, by recommending research emphases that should receive first priority through enhanced public and private research in order to reverse the trajectory toward global soil degradation.

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“…Though not a true "trait", symbiotic soil microbial communities often act like traditional plant traits. Several studies in natural, model, and managed systems now show that intraspecific genetic variation influences rhizosphere microbial community composition (Bressan et al 2009;Micallef et al 2009;Weinert et al 2011;Lundberg et al 2012;Zancarini et al 2012;Peiffer et al 2013). In some cases, these community changes are associated with relatively small changes in root traits and likely numbers of genes (e.g., Bressan et al 2009;Lankau 2011), though recent studies indicate that most traits are controlled by many genes (Mackay et al 2009).…”

Section: Effects Of Genetically-based Plant Traits On Soilsmentioning

confidence: 99%

Plant genetic effects on soils under climate change

et al. 2013

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Background In the face of climate change, shifts in genetic structure and composition of terrestrial plant species are occurring worldwide. Because different genotypes of these plant species support different soil biota and soil processes, shifts in genetics are likely to have cascading effects on ecosystems. Scope We explore plant genetic effects on soil function in the context of climate change, and selection by soils, soil biota and plant-soil feedbacks. We propose categories of genetically-based plant traits that should be prioritized in research on genetic-based effects on soil processes including plant productivity and C allocation, tissue quality, plant water-use, and rhizosphere mutualisms. Additionally, we posit that soil community responses to climate change should be considered in concert with plant genotype because of sensitivity of soil communities to climate. We use two case studies to highlight these points. Conclusions We argue that the effects of climate change as an agent of selection on plants may cascade to affect soils, and ultimately the structure, composition and function of ecosystems. Understanding the ecological and evolutionary potential of plant-soil linkages may help us understand and mitigate the extended consequences of global change for ecosystems worldwide. Accordingly, we conclude with experimental approaches for examining genetically-based plant-soil interactions across climate change gradients.Plant Soil (2014) 379:1-19 DOI 10.1007/s11104-013-1972-x Responsible Editor

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Influence of Arabidopsis thaliana accessions on rhizobacterial communities and natural variation in root exudates

Cited by 415 publications

References 62 publications

Impact of root exudates and plant defense signaling on bacterial communities in the rhizosphere. A review

Impact of root exudates and plant defense signaling on bacterial communities in the rhizosphere. A review

Understanding and Enhancing Soil Biological Health: The Solution for Reversing Soil Degradation

Plant genetic effects on soils under climate change

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