{
  "id": 18154422,
  "title": "Four genome assemblies of new wild Gossypium hirsutum accessions from the Yucatan Peninsula, the center of domestication",
  "url": "https://urgent.news/2026/11/04/four-genome-assemblies-of-new-wild-gossypium-hirsutum-accessions-from",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-04T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.11.02.763792v1?rss=1"
  },
  "original_language": "en",
  "account": "The Gossypium hirsutum, a key contributor to the cotton fiber industry, has faced challenges due to its limited genetic diversity. This narrow genetic base leaves modern cultivars exposed to emerging pests and diseases. Wild G. hirsutum populations, however, harbor a wealth of genetic diversity that could bolster resistance and stress adaptation in cultivated lines. In a recent study, four new, high-quality genome assemblies of wild G. hirsutum accessions from the Yucatan Peninsula were unveiled. This region is recognized as the center of domestication for this species. Despite their structural similarities to previously existing G. hirsutum genomes, these chromosome-level assemblies represent a distinct genetic reservoir with untapped potential. By comparing these new assemblies to existing ones, researchers identified unique variations in nucleotide-binding leucine-rich repeat (NLR) immune receptor genes. These differences suggest the possibility of presence-absence variation in resistance genes among different wild populations. This discovery underscores the value of these new genomic resources for identifying novel disease resistance alleles. Beyond disease resistance, such genomic information can help expand the limited genetic diversity of modern cotton cultivars, providing a more robust foundation against future challenges.",
  "summary": "Gossypium hirsutum is a leading source of natural cotton fiber, accounting for most of the market share. While domestication and improvement have led to significant gains in fiber quantity and quality, the narrow germplasm base of modern cultivars creates vulnerabilities, including to emerging pests. Wild populations provide a reservoir for genetic diversity that may be valuable in identifying…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}