<scp>Rhizosphere</scp><scp>bacterial communities differ among traditional maize landraces</scp>

Lund, Mads; Rasmussen, Jacob Agerbo; Ramos‐Madrigal, Jazmín; Sawers, Ruairidh J. H.; Gilbert, Martin; Barnes, Christopher J.

doi:10.1002/edn3.333

Cited by 8 publications

(8 citation statements)

References 46 publications

(75 reference statements)

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“…Inter-species variation in the host plant genome has been found to have a relatively small effect on the associated microbial communities compared with other factors such as environmental variation [6,50,51,56,57]. In this work, we found that the rhizosphere bacterial communities of Eglouvis samples were divergent compared to Demetra regarding the amounts of participating N 2 -fixing bacteria.…”

Section: Microbial Diversitymentioning

confidence: 59%

“…Nowadays, mounting evidence from research indicates that the plant genome has a central and dynamic role in shaping the composition of the microbiome [5,6]. Awad and coworkers have shown that the phyllosphere microbiome in grapevine cultivars is governed by the cultivar genotype in a collection of grapevine cultivars grown in the same orchard [7], thus, demonstrating that the plant genotype is key player of the above-ground plant microbiome.…”

Section: Introductionmentioning

confidence: 99%

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Lentil Landrace Seed Origin and Genotype Affects Rhizosphere Microbiome

Gleridou,

Giannopoulos,

Polidoros

et al. 2023

Agronomy

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Lentil (Lens culinaris Medik.) is an essential legume crop providing healthy and nutritious food for people in low- to middle-income countries, worldwide. Lentil roots support symbiotic interactions with soil rhizobia species fostering nitrogen fixation; however, assemblage and diversity of the complete microbial rhizosphere community and the effect of seed genotype and origin remain largely unexplored. In this study we examined, via metagenomic analysis, the effects of seed origin on the rhizosphere’s communities in samples of the famous Greek lentil landrace, Eglouvis, derived from different local farmers and farming systems (including a Gene Bank sample), in comparison to a commercial variety. The landrace exhibited higher rhizosphere microbiome diversity compared to the commercial variety for all indexes. A core microbiome comprised of 158 taxa was present in all samples, while a greater number of unique bacterial taxa was recorded in the landrace samples compared to the commercial cultivar. Notably, landrace samples originated from organic farming had more than double the number of unique taxa compared to conventional counterparts. The study revealed a higher diversity of N2 fixers and archaea, Crenarchaeota and Thaumarchaeota, in landrace samples and particularly in those derived from organic farming, underpinning the distinct recruiting efficiency of beneficial soil microbes by the landrace.

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Section: Microbial Diversitymentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Lentil Landrace Seed Origin and Genotype Affects Rhizosphere Microbiome

Gleridou,

Giannopoulos,

Polidoros

et al. 2023

Agronomy

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“…It is thus not surprising that these specialized metabolites have been under positive selection during crop domestication. [40,203,204] By shaping the plant interactions with other living organisms, benzoxazinoids shape the evolution of trophic interactions and ecosystem functioning. [192,193,[205][206][207] Harnessing their power in modulating the plant physiology (e.g.…”

Section: Discussionmentioning

confidence: 99%

The Chemical Ecology of Benzoxazinoids

Robert¹,

Mateo²

2022

Chimia

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Benzoxazinoids are specialized metabolites that modulate plant physiology and plant interactions with their environment. In this review, we synthesize their multiple functions and ecological relevance. We first provide an overview of benzoxazinoid biosynthesis and highlight known regulatory elements involved in modulating their production. We then outline the role of benzoxazinoids in plant nutrition, vegetative and reproductive growth, and defense. We further summarize benzoxazinoid response to environmental factors such as temperature, drought, CO2, light, or nutrient levels and emphasize their potential role in tolerating abiotic stresses. Finally, we argue that benzoxazinoids act as a strong selective force on different trophic levels by shaping the plant interactions with microbes, insect herbivores, and competitor plants. Understanding the pivotal role of benzoxazinoids in plant biology is crucial to apprehend their impact on (agro)ecosystem functioning and diversity.

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“…A substantial number of studies have documented general effects, often as associations, of host genetic background on the microbiota in various experimental and ecological contexts including at the species level (Sylvain et al., 2022), inter‐individual level (Boutin et al., 2014), or population level (Kurilshikov et al., 2021; Lopera‐Maya et al., 2022; Small et al., 2023; Smith et al., 2015). Here, host‐associated microbiota is defined as all the microbes and their abundances that can preside within and on the host at any given point in time (Lund et al., 2022; Velasquez et al., 2023). Thereby the host‐genetic factors create a restraint on the microbiota community composition.…”

Section: Introductionmentioning

confidence: 99%

A zebrafish model to elucidate the impact of host genes on the microbiota

Thormar,

Rasmussen,

Mathiessen

et al. 2024

Environmental DNA

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Every host species and organism provides a unique environmental niche contributing to the overall diversity of microbial ecosystems from the intestine of an animal to the oceans and forests of our planet. The study of host–microbiota interactions has long focused on the well‐established effects the microbiota has on its host. In contrast, little focus has been allocated to the role of the host in these intricate interactions. However, understanding the role of the host may well be an essential key to understanding the complexity of the relationship between the host and its microbiota. In this study, we present a model in which the effects of host genes on the microbiota can be elucidated and how such genetic effects may shape host‐associated microbiota. We demonstrate a hologenomic approach implementing the CRISPR/Cas system in the zebrafish model to combine the effects of a host gene with 16S metabarcoding and metabolomics data. We show that knocking out the gene coding for the rate‐limiting enzyme in melanogenesis, tyrosinase (tyr), correlates with changes in the intestinal microbiota of zebrafish and differences in the abundance of specific metabolites illustrating the value of our model for studying the impact of host genes on the composition and function of the intestinal microbiota.

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Rhizospherebacterial communities differ among traditional maize landraces

Cited by 8 publications

References 46 publications

Lentil Landrace Seed Origin and Genotype Affects Rhizosphere Microbiome

Lentil Landrace Seed Origin and Genotype Affects Rhizosphere Microbiome

The Chemical Ecology of Benzoxazinoids

A zebrafish model to elucidate the impact of host genes on the microbiota

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