Plant flavones enrich rhizosphere Oxalobacteraceae to improve maize performance under nitrogen deprivation

Yu, Peng; He, Xiaoming; Baer, Marcel D.; Beirinckx, Stien; Tian, Tian; Moya, Yudelsy Antonia Tandrón; Zhang, Xuechen; Deichmann, Marion; Frey, Felix P.; Bresgen, Verena; Li, Chunjian; Razavi, Bahar S.; Schaaf, Gabriel; Wirén, Nicolaus von; Su, Zhen; Bucher, Marcel; Tsuda, Kazuhiko; Goormachtig, Sofie; Chen, Xinping; Hochholdinger, Frank

doi:10.1038/s41477-021-00897-y

Cited by 319 publications

(307 citation statements)

References 102 publications

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“…Moreover, alpha diversity indices were observed to significant decline after quercetin treatment [ 70 ]. Yu et al ., [ 71 ] showed that flavones lead to enrichment of the plant beneficial Oxalobacteraceae in the rhizosphere of maize. Guenoune et al .…”

Section: Discussionmentioning

confidence: 99%

Arabidopsis assemble distinct root-associated microbiomes through the synthesis of an array of defense metabolites

2021

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Plant associated microbiomes are known to confer fitness advantages to the host. Understanding how plant factors including biochemical traits influence host associated microbiome assembly could facilitate the development of microbiome-mediated solutions for sustainable plant production. Here, we examined microbial community structures of a set of well-characterized Arabidopsis thaliana mutants disrupted in metabolic pathways for the production of glucosinolates, flavonoids, or a number of defense signalling molecules. A. thaliana lines were grown in a natural soil and maintained under greenhouse conditions for 4 weeks before collection of roots for bacterial and fungal community profiling. We found distinct relative abundances and diversities of bacterial and fungal communities assembled in the individual A. thaliana mutants compared to their parental lines. Bacterial and fungal genera were mostly enriched than depleted in secondary metabolite and defense signaling mutants, except for flavonoid mutations on fungi communities. Bacterial genera Azospirillum and Flavobacterium were significantly enriched in most of the glucosinolate, flavonoid and signalling mutants while the fungal taxa Sporobolomyces and Emericellopsis were enriched in several glucosinolates and signalling mutants. Whilst the present study revealed marked differences in microbiomes of Arabidopsis mutants and their parental lines, it is suggestive that unknown enzymatic and pleiotropic activities of the mutated genes could contribute to the identified host-associated microbiomes. Notwithstanding, this study revealed interesting gene-microbiota links, and thus represents valuable resource data for selecting candidate A. thaliana mutants for analyzing the links between host genetics and the associated microbiome.

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Section: Discussionmentioning

confidence: 99%

Arabidopsis assemble distinct root-associated microbiomes through the synthesis of an array of defense metabolites

2021

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“…Those were mainly the Pseudomonadaceae and Oxalobacteraceae family members. Inoculation with different Pseudomonadaceae strains has improved the salt-tolerance of Zea mays, which was connected to the water-binding exopolysaccharides produced by those bacteria [47], whereas the Oxalobacteraceae were enriched by the same plant species in nitrogen-poor soils, stimulating lateral root growth, consequently increasing nitrogen compound and other resources acquisition [48]. Furthermore, as these two families harbor mostly copiotrophic bacteria that display a multitude of metabolic features [49], their relative abundances in the endosphere were significantly correlated with the catabolism intensity of some of the carbon sources, most notably plant cell wall components: D-cellobiose and D-xylose.…”

Section: Discussionmentioning

confidence: 99%

Root-Associated Bacteria Community Characteristics of Antarctic Plants: Deschampsia antarctica and Colobanthus quitensis—a Comparison

et al. 2021

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Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. are the only Magnoliophyta to naturally colonize the Antarctic region. The reason for their sole presence in Antarctica is still debated as there is no definitive consensus on how only two unrelated flowering plants managed to establish breeding populations in this part of the world. In this study, we have explored and compared the rhizosphere and root-endosphere dwelling microbial community of C. quitensis and D. antarctica specimens sampled in maritime Antarctica from sites displaying contrasting edaphic characteristics. Bacterial phylogenetic diversity (high-throughput 16S rRNA gene fragment targeted sequencing) and microbial metabolic activity (Biolog EcoPlates) with a geochemical soil background were assessed. Gathered data showed that the microbiome of C. quitensis root system was mostly site-dependent, displaying different characteristics in each of the examined locations. This plant tolerated an active bacterial community only in severe conditions (salt stress and nutrient deprivation), while in other more favorable circumstances, it restricted microbial activity, with a possibility of microbivory-based nutrient acquisition. The microbial communities of D. antarctica showed a high degree of similarity between samples within a particular rhizocompartment. The grass’ endosphere was significantly enriched in plant beneficial taxa of the family Rhizobiaceae, which displayed obligatory endophyte characteristics, suggesting that at least part of this community is transmitted vertically. Ultimately, the ecological success of C. quitensis and D. antarctica in Antarctica might be largely attributed to their associations and management of root-associated microbiota.

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“…Rhizosphere and root microbiomes modified by PSMs can be beneficial for plant growth and defense. For example, in maize, soil microbial communities assembled by benzoxazinoids suppressed herbivore growth in the next generation of plants and Oxalobacteraceae enriched by flavones promoted plant growth and nitrogen acquisition [ 9 , 14 ]. Members of the family Burkholderiaceae are reportedly involved in plant–pathogen suppression via the upregulation of induced systemic resistance-associated genes and the production of sulfurous volatile compounds and siderophores [ 68 , 69 , 70 ].…”

Section: Discussionmentioning

confidence: 99%

“…Metabolites secreted from roots are called root exudates, and these account for up to 40% of the carbon fixed during photosynthesis [ 7 ]. Rhizosphere microbiomes assembled by root exudates promote plant growth and help the host plants overcome biotic and abiotic stresses [ 8 , 9 ]. In the last decade, multiple studies have revealed that PSMs are involved in the formation of the rhizosphere and root microbiome [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Triterpenoid and Steroidal Saponins Differentially Influence Soil Bacterial Genera

Nakayasu

Yamazaki

Aoki

et al. 2021

Plants

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Plant specialized metabolites (PSMs) are secreted into the rhizosphere, i.e., the soil zone surrounding the roots of plants. They are often involved in root-associated microbiome assembly, but the association between PSMs and microbiota is not well characterized. Saponins are a group of PSMs widely distributed in angiosperms. In this study, we compared the bacterial communities in field soils treated with the pure compounds of four different saponins. All saponin treatments decreased bacterial α-diversity and caused significant differences in β-diversity when compared with the control. The bacterial taxa depleted by saponin treatments were higher than the ones enriched; two families, Burkholderiaceae and Methylophilaceae, were enriched, while eighteen families were depleted with all saponin treatments. Sphingomonadaceae, which is abundant in the rhizosphere of saponin-producing plants (tomato and soybean), was enriched in soil treated with α-solanine, dioscin, and soyasaponins. α-Solanine and dioscin had a steroid-type aglycone that was found to specifically enrich Geobacteraceae, Lachnospiraceae, and Moraxellaceae, while soyasaponins and glycyrrhizin with an oleanane-type aglycone did not specifically enrich any of the bacterial families. At the bacterial genus level, the steroidal-type and oleanane-type saponins differentially influenced the soil bacterial taxa. Together, these results indicate that there is a relationship between the identities of saponins and their effects on soil bacterial communities.

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Plant flavones enrich rhizosphere Oxalobacteraceae to improve maize performance under nitrogen deprivation

Cited by 319 publications

References 102 publications

Arabidopsis assemble distinct root-associated microbiomes through the synthesis of an array of defense metabolites

Arabidopsis assemble distinct root-associated microbiomes through the synthesis of an array of defense metabolites

Root-Associated Bacteria Community Characteristics of Antarctic Plants: Deschampsia antarctica and Colobanthus quitensis—a Comparison

Triterpenoid and Steroidal Saponins Differentially Influence Soil Bacterial Genera

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