Beneficial effects of endophytic fungi colonization on plants

Applied Microbiology and Biotechnology, Год журнала: 2019, Номер unknown

Опубликована: Март 7, 2019

Язык: Английский

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Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Microbiome, Год журнала: 2020, Номер 8(1)

Опубликована: Сен. 22, 2020

Abstract Background Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms ( i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least part due impacts structure function resident soil microbiome. However, it remains unclear whether such improvements are driven specific action microbial inoculants, populations naturally fertilizer or physical-chemical properties compost substrate. The aim this study was seek ecological mechanisms involved disease suppressive activity bio-organic fertilizers. Results To disentangle mechanism action, we conducted an experiment tracking Fusarium wilt banana changes communities over three growth seasons response following four treatments: (containing Bacillus amyloliquefaciens W19), fertilizer, sterilized B . W19. We found that which re-inoculated provided similar degree suppression as non-sterilized across cropping seasons. further observed these treatments is linked communities, specifically leading increases Pseudomonas spp.. Observed correlations between amendment indigenous spp. might underlie were studied laboratory pot experiments. These studies revealed bacterial taxa synergistically increase biofilm formation likely acted plant-beneficial consortium pathogen. Conclusion Together demonstrate product inoculum within its This knowledge should help design more efficient biofertilizers designed promote function.

Язык: Английский

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Metabolic regulation of the maize rhizobiome by benzoxazinoids

The ISME Journal, Год журнала: 2019, Номер 13(7), С. 1647 - 1658

Опубликована: Фев. 22, 2019

Abstract The rhizobiome is an important regulator of plant growth and health. Plants shape their communities through production release primary secondary root metabolites. Benzoxazinoids (BXs) are common tryptophan-derived metabolites in grasses that regulate belowground aboveground biotic interactions. In addition to biocidal activity, BXs can plant–biotic interactions as semiochemicals or within-plant defence signals. However, the full extent mechanisms by which root-associated microbiome has remained largely unexplored. Here, we have taken a global approach examine regulatory activity on maize metabolome associated bacterial fungal communities. Using untargeted mass spectrometry analysis combination with prokaryotic amplicon sequencing, compared impacts three genetic mutations different steps BX pathway. We show metabolism concurrently influence type-dependent manner. Correlation between BX-controlled taxa suggested dominant role for BX-dependent metabolites, particularly flavonoids, constraining range soil microbial taxa, while stimulating methylophilic bacteria. Our study supports multilateral model control root–microbe via function metabolism.

Язык: Английский

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Interactions between plants and soil shaping the root microbiome under abiotic stress

Biochemical Journal, Год журнала: 2019, Номер 476(19), С. 2705 - 2724

Опубликована: Окт. 11, 2019

Abstract Plants growing in soil develop close associations with microorganisms, which inhabit the areas around, on, and inside their roots. These microbial communities associated genes — collectively termed root microbiome are diverse have been shown to play an important role conferring abiotic stress tolerance plant hosts. In light of concerns over threat water nutrient facing terrestrial ecosystems, especially those used for agricultural production, increased emphasis has placed on understanding how conditions influence composition functioning ultimate consequences health. However, under will not only reflect shifts greater bulk community from plants recruit but also responses stress, include changes exudate profiles morphology. Exploring relative contributions these direct plant-mediated effects focus many studies recent years. Here, we review impacts affecting specifically flooding, drought, nitrogen phosphorus availability, that interact ultimately shape microbiome. We conclude a perspective outlining possible directions future research needed advance our complex molecular biochemical interactions between soil, plants, microbes determine stress.

Язык: Английский

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Plant developmental stage drives the differentiation in ecological role of the maize microbiome

Microbiome, Год журнала: 2021, Номер 9(1)

Опубликована: Авг. 13, 2021

Abstract Background Plants live with diverse microbial communities which profoundly affect multiple facets of host performance, but if and how development impacts the assembly, functions interactions crop microbiomes are poorly understood. Here we examined both bacterial fungal across soils, epiphytic endophytic niches leaf root, plastic fake plant (representing environment-originating microbes) at three developmental stages maize two contrasting sites, further explored potential function phylloplane based on metagenomics. Results Our results suggested that stage had a much stronger influence diversity, composition interkingdom networks in compartments than strongest effect phylloplane. Phylloplane were co-shaped by growth seasonal environmental factors, air (represented plants) as its important source. Further, found more strongly driven deterministic processes early similar pattern was for late stage. Moreover, taxa played role network yield prediction stage, while did so Metagenomic analyses indicated possessed higher functional diversity genes related to nutrient provision enriched N assimilation C degradation Coincidently, abundant beneficial like Actinobacteria, Burkholderiaceae Rhizobiaceae observed saprophytic fungi Conclusions suggest influences microbiome assembly functions, take differentiated ecological different development. This study provides empirical evidence exerting strong selection during These findings have implications future tools manipulate sustainable increase primary productivity.

Язык: Английский

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