Phyllosphere and rhizosphere microbiomes empower Nicotiana tobacum complex traits dissection and prediction | bioRxiv
Understanding how plant-associated microbiomes interact with host genome variation to influence agronomic traits is essential for advancing microbiomeโฐassisted crop improvement. In this study, we characterized the phyllosphere and rhizosphere microbiomes of 164 diverse Nicotiana tabacum accessions using 16S rRNA sequencing and integrated these data with host genomic variation and 22 agronomic traits. The two microbiomes exhibited distinct taxonomic structures, diversity patterns, and predicted metabolic functions. Microbiome genomeโฐwide association studies identified extensive host genetic control over microbial abundance, including 49 shared genomic loci that explained nearly half of the heritable variation in both microbiomes. Microbiomeโฐwide association studies revealed biologically meaningful associations between specific ASVs and agronomic traits. However, network analysis demonstrated that microbial subโฐcommunities, rather than individual taxa, contributed substantially to phenotypic variation. Then, colocalization analysis further identified genetic variants jointly influencing microbial abundance and metabolite traits, highlighting potential host-microbe-trait causal links. Incorporating microbiome data into genomic selection models, we successfully improved prediction accuracy for several traits, especially plant architecture and flowering. Together, this work provides a comprehensive populationโฐlevel framework linking host genetics, microbiome composition, and agronomic traits in tobacco, offering new insights for microbiomeโฐinformed breeding strategies.
Holobiont works -> Phyllosphere and rhizosphere microbiomes empower Nicotiana tobacum complex traits dissection and prediction | bioRxiv
01.03.2026 17:54
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Pesticide residues alter taxonomic and functional biodiversity in soils
Pesticides are widely distributed in soils1,2,3, yet their effects on soil biodiversity remain poorly understood4,5,6,7. Here we examined the effects of 63 pesticides on soil archaea, bacteria, fungi, protists, nematodes, arthropods and key functional gene groups across 373 sites spanning woodlands, grasslands and croplands in 26 European countries. Pesticide residues were detected in 70% of sites and emerged as the second strongest driver of soil biodiversity patterns after soil properties. Our analysis further revealed organism- and function-specific patterns, emphasizing complex and widespread non-target effects on soil biodiversity. Pesticides altered microbial functions, including phosphorus and nitrogen cycling, and suppressed beneficial taxa, including arbuscular mycorrhizal fungi and bacterivore nematodes. Our findings highlight the need to integrate functional and taxonomic characteristics into future risk assessment methodology to safeguard soil biodiversity, a cornerstone of ecosystem functioning.
Amazing and super helpful paperย -> Pesticide residues alter taxonomic and functional biodiversity in soils
10.02.2026 16:00
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Jack Kim and Jill Banfield in a rice field in California.
Today in Nature Communications, a team of IGI researchers from The Banfield Lab and Pam Ronald's labs uncover a new way to reduce #methane emissions from rice by influencing the activity of rice paddy soil #microbes. Read more: https://ow.ly/45j150Y3WsI
10.02.2026 15:25
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Check out our new preprint using 30 SynComs covering a phylogenetic diversity gradient, we uncover many interesting strain and community features involved in seed to seedling bacterial transmission ๐งซ๐ฑ
@emersys-irhs.bsky.social in the SUCSEED project @inrae-dpt-spe.bsky.social
04.02.2026 10:32
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๐ฑ 3rd International Institute Jean-Pierre Bourgin for Plant Sciences (IJPB) Symposium ๐ฑ
๐ Versailles, France | ๐ 23โ25 September 2026
๐ฌ Theme: Chemical interactions between plants and their environment โ from the molecule to the field
๐ The event website is now live ๐ lnkd.in/eRHS2ey4
22.01.2026 14:54
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Dormancy and reactivation of the seed and its microbiome: a holobiont perspective | mSystems
Desiccation toleranceโthe ability of organisms to withstand severe water loss and subsequently reviveโis a key trait acquired by seeds of most plant species during the final stages of development, when their moisture content declines to ~10% of fresh weight (1). Desiccation-tolerant seeds (hereafter seeds for simplicity) survive the removal of cellular water by accumulating protective molecules and forming intracellular glasses, which impose a metabolically inactive state called quiescence (quietus, at rest) (2) (boldface terms are defined in Box 1). Once environmental conditions become favorable, typically after rehydration and in the presence of suitable temperature, light, and oxygen, quiescent seeds resume metabolism and can germinate. However, even under these conducive hydrated conditions, seed germination may still be restricted by endogenous inhibitors (2). This seed trait, which requires additional regulatory mechanisms, is called physiological dormancy (dormire, to sleep) (Box 1).
Dormancy and reactivation of the seed and its microbiome: a holobiont perspective
22.01.2026 07:13
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Anรฉ Lab
Jean-Michel Anรฉ
2 postdoc openings in my lab:
anelab.wisc.edu/join-us.html
One for a maize geneticist and one for a bacterial geneticist
Picture featuring @manishbiotechie.bsky.social, @balptekin.bsky.social and @sairamnagalla.bsky.social. The first two left my lab over the last few months to start their own labs!
18.01.2026 23:50
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Axel de Zelicourt from @ips2parissaclay.bsky.social presents his work on plant beneficial bacteria in low N conditions @ijpb-versaillescly.bsky.social
๐ฑ๐ฆ ๐งซ
19.01.2026 10:17
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Hi Frederik, best wishes for 2026 ๐ When I was in Madrid we worked with novogene and if I remember well, they performed the RNAseq in Europe. Very good sequencing quality, a bit costly in my opinion however
14.01.2026 15:45
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Soil iron drives beneficial maize microbiome feedbacks inrotations with wheat https://www.biorxiv.org/content/10.64898/2026.01.08.698436v1
09.01.2026 03:16
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PhD & Postdoc positions โ Junta de Andalucรญa
Looking for highly motivated candidates to apply with my Microbiomes & Microbial Interactions group at the University of Mรกlaga (IHSM).
Interested in joining our team?
๐ฉ vcarrion@uma.es
๐ www.carrionlab.com
๐ www.ihsm.uma-csic.es/investigador...
06.01.2026 12:38
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Validate User
A small scientific Christmas gift ๐๐ฑ We review how root-associated microbiomes and epigenetic regulation contribute to plant heat stress resilience, highlighting the importance of realistic root temperature gradients using our TGRooZ device. @jxbotany.bsky.social
academic.oup.com/jxb/article/...
05.01.2026 09:29
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The genotypically conserved core microbiota modulates nutrient turnover in soybean rhizosphere
Microbiota-mediated nutrient turnover in the rhizosphere determines nutrient bioavailability, thereby enhancing nutrient uptake, utilization, and ultimately crop productivity. Consequently, elucidating the functional core microbiota in rhizosphere nutrient turnover is of critical importance. In this study, we leveraged soybean germplasm core collections to investigate the tripartite relationship among host genotype, core microbiota and nutrient availability, with a focus on delineating the pivotal role of core microbiota in nutrient turnover. Our results suggest that phylogenetic variation significantly shape root-associated microbial communities and rhizosphere nutrient availability, explaining 11.75ย % and 2.07ย % of total variances, respectively. Core microbiota analysis identified 29 phylogenetic conserved core amplicon sequence variants (ASVs), the majority of which exhibited significant correlated with nutrient availability. Notably, three key core ASVsโASV13, ASV14 and ASV12, positively correlated with alkali-hydrolyzed nitrogen, available phosphorus, and soil organic matter, respectively. These taxa were subsequently incorporated into a Bradyrhizobium-based synthetic bacterial community (SynCom) to validate their functional roles. Further experiments confirmed that core microbiota-driven nutrient turnover directly facilitates host plant, as evidenced by SynCom inoculation assays. Collectively, this study establishes that phylogenetically conserved core microbiota critically regulate nutrient turnover and acquisition efficiency in the rhizosphere. These insights advance our understanding the ecological function of core microbiota in the rhizosphere and provide a framework for harnessing the beneficial traits in sustainable agriculture.
Interesting SynCom for soybean -> The genotypically conserved core microbiota modulates nutrient turnover in soybean rhizosphere - ScienceDirect
31.12.2025 20:50
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Ectomycorrhizal fungi recruit hyphae-associated bacteria that metabolize thiamine to promote pine symbiosis
Ectomycorrhizal fungi form symbiotic relationships with a wide range of terrestrial plants, acquiring carbohydrates for themselves and promoting nutrient uptake in their host plants. However, some ectomycorrhizal fungi cannot effectively obtain the thiamine necessary for growth from their host or synthesize it themselves. Ectomycorrhizal fungi can recruit hypha-associated microorganisms, which play a vital role in promoting nutrient absorption and ectomycorrhizal root formation, ultimately colonizing within fruiting bodies to form a unique bacterial microbiota. In this study, non-targeted metabolomics and whole-genome sequencing were employed to investigate the colonization characteristics of the hyphae-associated bacterium Bacillus altitudinis B4 on the mycelial surface of ectomycorrhizal fungus Suillus clintonianus, as well as the synergistic promotion of thiamine synthesis and absorption by B. altitudinis B4 and the fungal mycelium, respectively. The results suggested that S. clintonianus first secreted ureidosuccinic acid and pregnenolone, recruiting the hyphae-associated bacterium B. altitudinis B4 to the mycelial surface. Subsequently, the ureidosuccinic acid secreted by S. clintonianus further stimulated B. altitudinis B4 to enhance thiamine production by increasing its biomass and upregulating the expression of related functional genes. Finally, S. clintonianus absorbed the thiamine secreted by the B. altitudinis B4, promoting fungal growth and increasing the colonization rate in association with Pinus massoniana. This study elucidates the thiamine acquisition mechanisms of ectomycorrhizal fungi, highlighting the critical role of bacterial partners in fungal nutrition and host-fungal interactions.
Ectomycorrhizal fungi recruit hyphae-associated bacteria that metabolize thiamine to promote pine symbiosis | The ISME Journal | Oxford Academic
31.12.2025 21:10
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Integrative regulatory networks modulating arbuscular mycorrhizal symbiosis
Arbuscular mycorrhizal symbiosis plays a pivotal role in nutrient acquisition and stress tolerance, making its regulation crucial for sustainable crop productivity. This review synthesizes current advances in understanding the molecular and physiological factors governing AM symbiosis, with emphasis on transcriptional, hormonal, and nutrient-mediated regulation. From pre-symbiotic signaling to root colonization and arbuscule development, AM formation is orchestrated by a complex network of molecular interactions. Transcription factors, including those with GRAS domains (e.g., NSP1, NSP2, RAM1, and DELLA), and other regulators such as MYB, SPX, WRKY, and CYCLOPS/IPD3, serve as central modulators of symbiosis-related gene expression. Phytohormones, including strigolactones, salicylic acid, and abscisic acid, generally promote symbiosis, whereas gibberellins and ethylene act as inhibitors; cytokinin exerts context-dependent effects. Nutrient status also modulates AM formationโlow phosphorus and nitrogen promote, while high nutrient availability suppresses colonization. Collectively, these insights reveal the integrative regulatory networks driving AM symbiosis and offer new avenues to optimize symbiotic efficiency for enhanced plant growth and agricultural sustainability.
Integrative regulatory networks modulating arbuscular mycorrhizal symbiosis - ScienceDirect
21.12.2025 22:23
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#TansleyReview: Mycelial dynamics in arbuscular mycorrhizal #fungi
Vasilis Kokkoris ๐
๐ nph.onlinelibrary.wiley.com/doi/10.1111/...
#LatestIssue #PlantScience
21.12.2025 15:10
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๐จWeโre hiring! Please help spread the word!
Our lab at @TheSainsburyLab is recruiting a pre-doctoral intern to work on plant immunity research. Ideal for those who are planning to pursue a PhD and seeking research experience. tatsuyanobori.com
15.12.2025 09:55
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๐ฃInterested in doing your PhD in Plant Sciences ๐ฑ, Microbial Sciences ๐ฆ or Computational Biology ๐ฉโ๐ป? @ceplas.bsky.social offers 10 fully funded PhD ๐fellowships. Pls repost and forward to interested candidates holding BSc degree.
11.12.2025 08:34
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Now out in @asm.org #mSystems! journals.asm.org/doi/10.1128/...
Congratulations to Robert and thanks to all collaborators. See thread below for a summary of the work, exploring the use of cross-species coexpression analyses to predict primary and secondary metabolic interactions in microbiomes.
10.12.2025 08:34
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