An Ecological Loop: Host Microbiomes across Multitrophic Interactions

Liu, Hongwei; Macdonald, Catriona A.; Cook, James M.; Anderson, Ian C.; Singh, Brajesh K.

doi:10.1016/j.tree.2019.07.011

Cited by 113 publications

(98 citation statements)

References 99 publications

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“…These findings indicate that in soils with infected plants changes in exudation and the microbiome lead to the build-up of a microbial legacy that is inherited to the next generations of plants growing in this soil and favors their survival under phytopathogenic pressure (Bakker et al, 2018). Considering the continuity of plantpathogens interactions during the lifetime of a plant in a field, a functional "loop" should be in action: when plants experience stress they respond with changes in exudation that can favor the selection of beneficial microbial members from the rhizosphere which in turn can help the plants deal with the stress (Liu et al, 2019a). Future studies should elucidate how different exudates contribute in the microbial recruitment and the subsequent soilborne legacy described above, considering the involvement of coumarins (Stringlis et al, 2018b;Stringlis et al, 2019a), malic acid (Rudrappa et al, 2008), benzoxazinoids (Hu et al, 2018;Cotton et al, 2019), and camalexin (Koprivova et al, 2019) in the selection of beneficial microbes in the rhizosphere.…”

Section: "Cry For Help" During Infection Of Plantsmentioning

confidence: 99%

Modulation of the Root Microbiome by Plant Molecules: The Basis for Targeted Disease Suppression and Plant Growth Promotion

et al. 2020

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Plants host a mesmerizing diversity of microbes inside and around their roots, known as the microbiome. The microbiome is composed mostly of fungi, bacteria, oomycetes, and archaea that can be either pathogenic or beneficial for plant health and fitness. To grow healthy, plants need to surveil soil niches around the roots for the detection of pathogenic microbes, and in parallel maximize the services of beneficial microbes in nutrients uptake and growth promotion. Plants employ a palette of mechanisms to modulate their microbiome including structural modifications, the exudation of secondary metabolites and the coordinated action of different defence responses. Here, we review the current understanding on the composition and activity of the root microbiome and how different plant molecules can shape the structure of the root-associated microbial communities. Examples are given on interactions that occur in the rhizosphere between plants and soilborne fungi. We also present some well-established examples of microbiome harnessing to highlight how plants can maximize their fitness by selecting their microbiome. Understanding how plants manipulate their microbiome can aid in the design of next-generation microbial inoculants for targeted disease suppression and enhanced plant growth.

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Section: "Cry For Help" During Infection Of Plantsmentioning

confidence: 99%

Modulation of the Root Microbiome by Plant Molecules: The Basis for Targeted Disease Suppression and Plant Growth Promotion

et al. 2020

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“…This is a conceptually fundamental finding within biology: the fact that multicellular systems host a community of microorganisms interacting and coevolving with them in such a way that a coherent, higher-order living organization is at work. This is the so-called Holobiont [25,26] and dedicated work on the origins, evolution and ecology of these communities include both a better understanding of living systems [27] but also strategies to modify them [28,29]. Such possibility is particularly relevant to restore damaged microbiomes affected by diseases [30] or environmental stress [31].…”

Section: Introductionmentioning

confidence: 99%

Synthetic Biology for Terraformation Lessons from Mars, Earth, and the Microbiome

Conde-Pueyo

Vidiella

Sardanyés

et al. 2020

Life

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What is the potential for synthetic biology as a way of engineering, on a large scale, complex ecosystems? Can it be used to change endangered ecological communities and rescue them to prevent their collapse? What are the best strategies for such ecological engineering paths to succeed? Is it possible to create stable, diverse synthetic ecosystems capable of persisting in closed environments? Can synthetic communities be created to thrive on planets different from ours? These and other questions pervade major future developments within synthetic biology. The goal of engineering ecosystems is plagued with all kinds of technological, scientific and ethic problems. In this paper, we consider the requirements for terraformation, i.e., for changing a given environment to make it hospitable to some given class of life forms. Although the standard use of this term involved strategies for planetary terraformation, it has been recently suggested that this approach could be applied to a very different context: ecological communities within our own planet. As discussed here, this includes multiple scales, from the gut microbiome to the entire biosphere.

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“…The plant microbiome includes associated microorganisms residing above and below ground, and inside or outside of plant tissues [1]. Plants in nature interact endlessly with diverse microbial species including mutualists that in uence plant health and reproduction by providing phytohormones, xing nitrogen, solubilizing phosphorus, facilitating mineral uptake, and protecting against pathogen attack [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Glutamic Acid Reshapes The Phytobiome To Protect Plants Against Pathogens

Kim¹,

Jeon²,

Cho³

et al. 2020

Preprint

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Background: The physiology and growth of plants are strongly influenced by their associated microbiomes. Conversely, the composition of the phytobiome is flexible, responding to the state of the host and raising the possibility that it can be engineered to benefit the plant. However, technology for engineering the structure of the microbiome is not yet available.Results: Here we show that glutamic acid reshapes the plant microbial community and enriches populations of Streptomyces, a functional core microbe, both above and below ground, in strawberry and tomato. Upon application of glutamic acid, the population size of Streptomyces increased dramatically in the anthosphere and the rhizosphere. At the same time, diseases caused by species of Fusarium were significantly reduced in both habitats. Plant resistance-related genes were not activated, suggesting that glutamic acid modulates the microbiome community directly, rather than activating the host’s own protective mechanisms.Conclusions: Much is known about the structure of plant-associated microbial communities, but little has been learned about how the community composition and complexity are controlled. Our results demonstrate that the microbiome community can be engineered and unlock the mode of action of glutamic acid.

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An Ecological Loop: Host Microbiomes across Multitrophic Interactions

Cited by 113 publications

References 99 publications

Modulation of the Root Microbiome by Plant Molecules: The Basis for Targeted Disease Suppression and Plant Growth Promotion

Modulation of the Root Microbiome by Plant Molecules: The Basis for Targeted Disease Suppression and Plant Growth Promotion

Synthetic Biology for Terraformation Lessons from Mars, Earth, and the Microbiome

Glutamic Acid Reshapes The Phytobiome To Protect Plants Against Pathogens

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