{
  "id": 14909168,
  "title": "C3 gas-exchange analyses read bundle-sheath refixation in C3-C4 intermediate leaves as negative day respiration",
  "url": "https://urgent.news/2026/10/16/c3-gas-exchange-analyses-read-bundle-sheath-refixation-in-c3-c4",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-16T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.12.758566v1?rss=1"
  },
  "original_language": "en",
  "account": null,
  "summary": "C3-C4 intermediate (C2) plants decarboxylate photorespiratory glycine in the bundle sheath, where Rubisco refixes some of the released CO2, yet researchers analyze their gas exchange with methods built for C3 leaves. I calibrated the C3-C4 model of von Caemmerer against published compensation points and Laisk measurements on C3 and C2 Flaveria and relatives at 36 {degrees}C, and analyzed the…",
  "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."
}