{
  "id": 274196,
  "title": "Rice brown spot resistance gene bsr1 also confers resistance to bacterial blight by suppressing sucrose efflux",
  "url": "https://urgent.news/2026/08/07/rice-brown-spot-resistance-gene-bsr1-also-confers-resistance-to",
  "topic": "world",
  "section": "World",
  "published": "2026-08-07T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.07.743414v1?rss=1"
  },
  "original_language": "en",
  "account": "The discovery of the brown spot resistance 1 (bsr1) gene has revealed a novel resistance mechanism in rice plants. This gene is responsible for conferring resistance to brown spot, a devastating fungal disease, as well as bacterial blight, caused by Xanthomonas oryzae pv. oryzae. The bsr1 gene encodes a sucrose transporter, which plays a crucial role in suppressing sucrose efflux into the plant's apoplast after pathogen attack. This mechanism of resistance is not limited to brown spot, as the near-isogenic line carrying bsr1 also demonstrated strain-specific resistance to bacterial blight. These findings highlight the dual role of bsr1 in providing protection against both fungal and bacterial diseases. The identification of this gene offers a promising avenue for developing rice cultivars with enhanced disease-resistance traits, ultimately contributing to global rice production and food security.",
  "summary": "Brown spot (BS), caused by the fungal pathogen Bipolaris oryzae, is a major disease threatening global rice production. However, the genetic basis of host BS resistance remains unclear. Here, we identified brown spot resistance 1 (bsr1), a quantitative trait locus conferring BS resistance, by map-based cloning. We show that bsr1 encodes a sucrose transporter and that a near-isogenic line carrying…",
  "key_points": [
    "Bsr1 gene provides resistance to brown spot and bacterial blight",
    "Sucrose transporter gene suppresses sucrose efflux after pathogen attack",
    "Near-isogenic line shows strain-specific resistance to bacterial blight"
  ],
  "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."
}