Variable influences of soil and seed-associated bacterial communities on the assembly of seedling microbiomes

The ISME Journal, Год журнала: 2021, Номер 15(9), С. 2748 - 2762

Опубликована: Март 29, 2021

Язык: Английский

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The role of rhizodeposits in shaping rhizomicrobiome

Environmental Microbiology Reports, Год журнала: 2019, Номер 12(2), С. 160 - 172

Опубликована: Дек. 20, 2019

Rhizomicrobiome, the communities of microorganisms surrounding root plant, plays a vital role in promoting plant growth and health. The composition rhizomicrobiome is dynamic both temporally spatially, influenced greatly by host environmental factors. One key influencing factors rhizodeposits, composed root-released tissue cells, exudates, lysates, volatile compounds, etc. Rhizodeposits are rich carbon nitrogen elements, able to select fuel rhizomicrobiome. In this minireview, we overview generation, dynamics discuss recent work describing general specific impacts rhizodeposits on We focus further most component review progresses about influence exudates bacterial colonization, inducing biofilm development, acting as defence shaping

Язык: Английский

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Competition, Nodule Occupancy, and Persistence of Inoculant Strains: Key Factors in the Rhizobium-Legume Symbioses

Frontiers in Plant Science, Год журнала: 2021, Номер 12

Опубликована: Авг. 19, 2021

Biological nitrogen fixation by Rhizobium -legume symbioses represents an environmentally friendly and inexpensive alternative to the use of chemical fertilizers in legume crops. Rhizobial inoculants, applied frequently as biofertilizers, play important role sustainable agriculture. However, inoculants often fail compete for nodule occupancy against native rhizobia with inferior nitrogen-fixing abilities, resulting low yields. Strains excellent performance under controlled conditions are typically selected but rates compared strains rarely investigated. Lack persistence field after agricultural cycles, usually due transfer symbiotic genes from inoculant strain naturalized populations, also limits suitability commercial inoculants. When rhizobial based on a high ability, they have superior their genetic adaptations local environment. Therefore, knowledge laboratory studies assessing competition understanding how diverse behave, together assays done conditions, may allow us exploit effectiveness populations elite breed specific host cultivar-rhizobial combinations. Here, we review current at molecular level nodulation advances tools competitiveness. We then describe ongoing approaches development emphasize future perspectives applications using multidisciplinary approach ensure optimal both partners.

Язык: Английский

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Rhizosphere modelling reveals spatiotemporal distribution of daidzein shaping soybean rhizosphere bacterial community

Plant Cell & Environment, Год журнала: 2019, Номер 43(4), С. 1036 - 1046

Опубликована: Дек. 25, 2019

Plant roots nurture a wide variety of microbes via exudation metabolites, shaping the rhizosphere's microbial community. Despite importance plant specialized metabolites in assemblage and function communities rhizosphere, little is known how far effects these extend through soil. We employed fluid model to simulate spatiotemporal distribution daidzein, an isoflavone secreted from soybean roots, validated using soybeans grown rhizobox. then analysed daidzein affects bacterial soils artificially treated with daidzein. Simulation showed that it was only present within few millimetres root surfaces. After 14 days rhizobox, 2 mm Soils different concentrations community composition, reduced α-diversity daidzein-treated soils. Bacterial were closer those rhizosphere than bulk This study highlighted limited surfaces demonstrated novel role assembling by acting as more repellant attractant.

Язык: Английский

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Saline and Arid Soils: Impact on Bacteria, Plants, and Their Interaction

Biology, Год журнала: 2020, Номер 9(6), С. 116 - 116

Опубликована: Июнь 2, 2020

Salinity and drought are the most important abiotic stresses hampering crop growth yield. It has been estimated that arid areas cover between 41% 45% of total Earth area worldwide. At same time, world's population is going to soon reach 9 billion survival this huge amount people dependent on agricultural products. Plants growing in saline/arid soil shows low germination rate, short roots, reduced shoot biomass, serious impairment photosynthetic efficiency, thus leading a substantial loss productivity, resulting significant economic damage. However, plants should not be considered as single entities, but superorganism, or holobiont, from intimate interactions occurring plant associated microbiota. Consequently, it very complex define how responds stress basis interaction with its growth-promoting bacteria (PGPB). This review provides an overview physiological mechanisms involved saline soils aims at describing bacteriome such perturbed environments. The potential PGPB supporting fitness these environmental conditions discussed.

Язык: Английский

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Breeding Beyond Monoculture: Putting the “Intercrop” Into Crops

Frontiers in Plant Science, Год журнала: 2021, Номер 12

Опубликована: Ноя. 18, 2021

Intercropping is both a well-established and yet novel agricultural practice, depending on one’s perspective. Such perspectives are principally governed by geographic location whether monocultural practices predominate. Given the negative environmental effects of monoculture agriculture (loss biodiversity, reliance non-renewable inputs, soil degradation, etc.), there has been renewed interest in cropping systems that can reduce impact modern while maintaining (or even increasing) yields. one most promising this regard, faces multitude challenges if it to compete with ultimately replace prevailing norm. These include necessity for more complex designs space time, bespoke machinery, adapted crop cultivars. Plant breeding monocultures focused maximizing yield single-species stands, leading highly productive specialized genotypes. However, indications suggest these genotypes not best intercropping systems. Re-designing programs accommodate inter-specific interactions compatibilities, potentially multiple different partners, certainly challenging, but recent technological advances offer solutions. We identify number such technology-driven directions, either ideotype-driven (i.e., “trait-based” breeding) or quantitative genetics-driven “product-based” breeding). For ideotype breeding, plant growth modeling help predict traits affect inter- intraspecific their influence performance. Quantitative approaches, other hand, estimate values component crops without necessarily understanding underlying mechanisms. argue combined approach, example, integrating genomic-assisted selection indirect genetic effects, may chance bridge gap between current integrated diverse future.

Язык: Английский

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Endophytic Bacteria From the Roots of the Medicinal Plant Alkanna tinctoria Tausch (Boraginaceae): Exploration of Plant Growth Promoting Properties and Potential Role in the Production of Plant Secondary Metabolites

Frontiers in Microbiology, Год журнала: 2021, Номер 12

Опубликована: Фев. 3, 2021

Alkannin and shikonin (A/S) are enantiomeric naphthoquinones produced in the roots of certain plants from Boraginaceae family such as Lithospermum spp. Alkanna They possess antimicrobial, anti-tumoral wound healing properties. The production secondary metabolites by tinctoria might be influenced its endomicrobiome. To study interaction between this medicinal plant bacterial endophytes, we isolated bacteria wild growing collected near to Athens Thessaloniki Greece. Representative strains selected MALDI-TOF mass spectrometry were identified partial 16S rRNA gene sequence analysis. In total, 197 distinct phylotypes endophytic detected. most abundant genera recovered Pseudomonas , Xanthomonas Variovorax Bacillus Inquilinus Pantoea Stenotrophomonas . Several then tested vitro for their growth promoting activity cell-wall degrading enzymes. Strains showed positive properties whereas those Bacteroidetes Rhizobiaceae pectinase cellulase addition, responses alkannin investigated through resistance assays. Gram negative found resistant antimicrobial A/S, positives sensitive. A selection was ability induce A/S hairy culture A. Four belonging Chitinophaga sp., Allorhizobium Duganella Micromonospora resulted significantly more than uninoculated control. As these can produce enzymes, hypothesize that induction may related with plant-bacteria during colonization.

Язык: Английский

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Prioritizing host phenotype to understand microbiome heritability in plants

New Phytologist, Год журнала: 2021, Номер 232(2), С. 502 - 509

Опубликована: Июль 21, 2021

Summary Breeders and evolutionary geneticists have grappled with the complexity of ‘genotype‐to‐phenotype map’ for decades. Now, recent studies highlight relevance this concept understanding heritability plant microbiomes. Because host phenotype is a more proximate cause microbiome variation than genotype, varies across anatomy development. Fine‐scale traits within organs suggests that well‐established ‘microbiome compartment’ should be refined. Additionally, work shows balance deterministic processes (including genetic effects) vs stochastic also over time space. Together, these findings suggest re‐centering – both as predictor readout function will accelerate new insights into heritability.

Язык: Английский

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Insights into plant–microbe interactions in the rhizosphere to promote sustainable agriculture in the new crops era

New Crops, Год журнала: 2023, Номер 1, С. 100004 - 100004

Опубликована: Ноя. 18, 2023

Microbes accompany plants throughout their lives, from the seed to ripe fruit. Plant-microbe interactions have long been a focus of research, leading thousands articles that demonstrate importance for agriculture. Here, we review these previous findings, and discuss future directions prospects application plant-microbe various perspectives: community composition, pathways interaction, influencing factors interactions, methods techniques studying potential applications interactions. We propose exploiting utilizing core beneficial microbes, artificial assembly microbiota, in situ regulation microbiome function will all become essential aspects

Язык: Английский

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Plant pathogen resistance is mediated by recruitment of specific rhizosphere fungi

The ISME Journal, Год журнала: 2023, Номер 17(6), С. 931 - 942

Опубликована: Апрель 10, 2023

Язык: Английский

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