Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation

Abstract Background Plant endophytes, comprising non-pathogenic bacteria, fungi, and archaea, inhabit various plant parts, including roots, stems, leaves, and seeds. These microorganisms play a crucial role in plant development by enhancing germination, growth, and stress resilience. Seed endophytes...

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Main Authors: Isaac Maestro-Gaitán, Miguel Redondo-Nieto, Sara González-Bodí, Laura Rodríguez-Casillas, Javier Matías, Luis Bolaños, María Reguera
Format: Article
Language:English
Published: BMC 2025-02-01
Series:Environmental Microbiome
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Online Access:https://doi.org/10.1186/s40793-025-00673-x
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author Isaac Maestro-Gaitán
Miguel Redondo-Nieto
Sara González-Bodí
Laura Rodríguez-Casillas
Javier Matías
Luis Bolaños
María Reguera
author_facet Isaac Maestro-Gaitán
Miguel Redondo-Nieto
Sara González-Bodí
Laura Rodríguez-Casillas
Javier Matías
Luis Bolaños
María Reguera
author_sort Isaac Maestro-Gaitán
collection DOAJ
description Abstract Background Plant endophytes, comprising non-pathogenic bacteria, fungi, and archaea, inhabit various plant parts, including roots, stems, leaves, and seeds. These microorganisms play a crucial role in plant development by enhancing germination, growth, and stress resilience. Seed endophytes, in particular, represent the most adapted and conserved segment of plant microbiota, significantly influencing the initial stages of plant growth and microbial community establishment. This study investigates the impact of environmental and genotypic factors on the endophytic communities of Chenopodium quinoa Willd. (quinoa), a crop notable for its adaptability and nutritional value. Results We aimed to characterize the core endophytic communities in quinoa seeds and roots from two distinct genotypes under well-watered (WW) and water-deficit (WD) conditions, utilizing various soil infusions as inoculants to explore potential changes in these endophytes. Our findings reveal distinct changes with quinoa seeds exhibiting a high degree of conservation in their endophytic microbiome, even between maternal and offspring seeds, with specific bacterial taxa showing only minor differences. Tissue specificity emerged as a key factor, with seeds maintaining a stable microbial community, while roots exhibited more pronounced shifts, highlighting the tissue-dependent patterns of microbial enrichment. Conclusions The results highlight the stability and conservation of endophytic communities in quinoa seeds, even under varying water conditions and across different genotypes, emphasizing the role of tissue specificity in shaping microbial associations. These findings suggest that quinoa-associated endophytes, particularly those conserved in seeds, may play a crucial role in enhancing drought resilience. Understanding the dynamics of plant-microbe interactions in quinoa is vital for developing stress-resilient crop varieties, supporting sustainable agricultural practices, and ensuring food security in the face of climate change and environmental challenges.
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spelling doaj-art-55a1a6e91f7b4d6ca85bbcc7552218072025-02-09T12:55:05ZengBMCEnvironmental Microbiome2524-63722025-02-0120111810.1186/s40793-025-00673-xInsights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variationIsaac Maestro-Gaitán0Miguel Redondo-Nieto1Sara González-Bodí2Laura Rodríguez-Casillas3Javier Matías4Luis Bolaños5María Reguera6Departamento de Biología, Universidad Autónoma de MadridDepartamento de Biología, Universidad Autónoma de MadridCentro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC)Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC)Centro de Investigaciones Científicas y Tecnológicas de Extremadura (CICYTEX), Instituto de Investigaciones Agrarias Finca La Orden, Área de Cultivos Extensivos, A5 km372Departamento de Biología, Universidad Autónoma de MadridDepartamento de Biología, Universidad Autónoma de MadridAbstract Background Plant endophytes, comprising non-pathogenic bacteria, fungi, and archaea, inhabit various plant parts, including roots, stems, leaves, and seeds. These microorganisms play a crucial role in plant development by enhancing germination, growth, and stress resilience. Seed endophytes, in particular, represent the most adapted and conserved segment of plant microbiota, significantly influencing the initial stages of plant growth and microbial community establishment. This study investigates the impact of environmental and genotypic factors on the endophytic communities of Chenopodium quinoa Willd. (quinoa), a crop notable for its adaptability and nutritional value. Results We aimed to characterize the core endophytic communities in quinoa seeds and roots from two distinct genotypes under well-watered (WW) and water-deficit (WD) conditions, utilizing various soil infusions as inoculants to explore potential changes in these endophytes. Our findings reveal distinct changes with quinoa seeds exhibiting a high degree of conservation in their endophytic microbiome, even between maternal and offspring seeds, with specific bacterial taxa showing only minor differences. Tissue specificity emerged as a key factor, with seeds maintaining a stable microbial community, while roots exhibited more pronounced shifts, highlighting the tissue-dependent patterns of microbial enrichment. Conclusions The results highlight the stability and conservation of endophytic communities in quinoa seeds, even under varying water conditions and across different genotypes, emphasizing the role of tissue specificity in shaping microbial associations. These findings suggest that quinoa-associated endophytes, particularly those conserved in seeds, may play a crucial role in enhancing drought resilience. Understanding the dynamics of plant-microbe interactions in quinoa is vital for developing stress-resilient crop varieties, supporting sustainable agricultural practices, and ensuring food security in the face of climate change and environmental challenges.https://doi.org/10.1186/s40793-025-00673-xSeed endophytesRoot endophytesQuinoaDroughtMicrobial diversity
spellingShingle Isaac Maestro-Gaitán
Miguel Redondo-Nieto
Sara González-Bodí
Laura Rodríguez-Casillas
Javier Matías
Luis Bolaños
María Reguera
Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
Environmental Microbiome
Seed endophytes
Root endophytes
Quinoa
Drought
Microbial diversity
title Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
title_full Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
title_fullStr Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
title_full_unstemmed Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
title_short Insights into quinoa endophytes: core bacterial communities reveal high stability to water stress and genotypic variation
title_sort insights into quinoa endophytes core bacterial communities reveal high stability to water stress and genotypic variation
topic Seed endophytes
Root endophytes
Quinoa
Drought
Microbial diversity
url https://doi.org/10.1186/s40793-025-00673-x
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