{
  "abstract": "Cereal-legume intercropping is a cornerstone of agroecological systems because interactions between species can enhance agroecosystem resilience. Yet, the mechanisms underlying these interactions remain poorly understood. To address this gap, we investigated the maize-bean association under low-input conditions. We conducted a two-year intercropping experiment with 200 climbing bean lines grown alongside three maize landraces in France and Romania. We evaluated bean phenotypic responses above-and below-ground to 3 maize landraces, treated as distinct biotic environments (E). Direct and indirect genetic effects were assessed by mapping bean and maize phenotypic traits onto the bean genome (G), with G × E interactions tested using contrasts among maize landraces. Competitive interactions dominated, maize acting as the stronger competitor. Maize landraces created distinct biotic environments affecting bean traits. Best-performing partners varied across experimental fields, with no evidence of bean local adaptation. The most productive and balanced mixtures were obtained with the traditionally intercropped maize landrace. Genome wide association analyses identified loci underlying direct and indirect genetic effects, including candidate genes associated with neighbor perception. These findings reveal the genetic complexity of maize-bean interactions and highlight competitive tolerance in bean and reduced aggressiveness in maize as key traits for improving cereal-legume intercrop performance.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "New results",
  "arxiv": null,
  "author_total": 20,
  "authors": [
    {
      "name": "Noa Vazeux-Blumental"
    },
    {
      "name": "Carine Palaffre"
    },
    {
      "name": "Creola Brezeanu"
    },
    {
      "name": "Petre M Brezeanu"
    },
    {
      "name": "Bernard Lagardère"
    },
    {
      "name": "Cyril Bauland"
    },
    {
      "name": "James Burridge"
    },
    {
      "name": "Pablo Affortit"
    },
    {
      "name": "Alexandre Grondin"
    },
    {
      "name": "Marzia Rossato"
    },
    {
      "name": "Andrea Benazzo"
    },
    {
      "name": "Tristan Mary-Huard"
    },
    {
      "name": "Laurence Moreau"
    },
    {
      "name": "Roberto Papa"
    },
    {
      "name": "Elisa Bellucci"
    },
    {
      "name": "Elena Bitocchi"
    },
    {
      "name": "Filippo Servalli"
    },
    {
      "name": "Laurent Laplaze"
    },
    {
      "name": "Domenica Manicacci"
    },
    {
      "name": "Maud I Tenaillon"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bajnxt57b47a4.bib",
  "cited_by": 0,
  "doi": "10.64898/2026.07.28.741233",
  "fulltext_url": "https://www.biorxiv.org/content/10.64898/2026.07.28.741233v2.full",
  "id": "bajnxt57b47a4",
  "issns": [],
  "landing_url": "https://hal.science/hal-05848334v1",
  "language": "en",
  "licence": "CC-BY-NC-4.0",
  "licence_label": "CC BY-NC 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "biorxiv",
      "genetics"
    ],
    [
      "hal",
      "0.sdv"
    ],
    [
      "openalex",
      "1102|Agronomic Practices and Intercropping Systems"
    ]
  ],
  "openalex": "W7171665647",
  "pdf_url": "https://hal.science/hal-05848334/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bajnxt57b47a4.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:17Z",
      "native_id": "hal-05848334",
      "source": "hal",
      "url": "https://hal.science/hal-05848334v1"
    },
    {
      "first_seen": "2026-11-05T12:20:38Z",
      "native_id": "10.64898/2026.07.28.741233",
      "source": "biorxiv",
      "url": "https://www.biorxiv.org/content/10.64898/2026.07.28.741233v2"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "biorxiv:genetics",
      "subfield": "genetics-genomics"
    }
  ],
  "title": "Dissecting the phenotypic and genetic determinants of maize–bean interactions in intercropping",
  "title_text": "Dissecting the phenotypic and genetic determinants of maize–bean interactions in intercropping",
  "type": "preprint",
  "updated_at": "2026-11-06T00:21:48Z",
  "url": "https://research.draconitic.com/paper/bajnxt57b47a4",
  "venue": "HAL",
  "versions": []
}