{
  "id": 3537025,
  "title": "Atypical immunity induced by extracellular water in plants",
  "url": "https://urgent.news/2026/08/26/atypical-immunity-induced-by-extracellular-water-in-plants",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-26T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.25.745410v1?rss=1"
  },
  "original_language": "en",
  "account": "Microbial pathogens necessitate nutrients and water to thrive and multiply. These pathogens employ virulence factors to acquire resources, with these factors varying in form but sharing a common purpose. A common virulence tactic used by numerous pathogens to cause disease is inducing a water-rich extracellular space, or apoplast, in their host. This water-soaked lesion is prevalent among pathogens.\n\nThe question arose: how do plants respond to pathogen-induced extracellular water? The study found that inducing a water-soaked apoplast triggers an unusual transcriptional response but ultimately results in a functional immune response. This response effectively curtails pathogen growth, similar to the canonical pattern-triggered immunity seen in plants. Investigating the underlying mechanisms, the research identified the immune phytohormone salicylic acid (SA) as crucial in mediating apoplastic water-induced immunity (AWII).\n\nThe findings imply that plants engage in an immune-priming program in response to apoplastic water accumulation. This suggests that the pathogenic niches formed during infection might be perceived as danger signals by the plant.",
  "summary": "Microbial pathogens require nutrients and water to support their growth and proliferation. Pathogen-mediated resource acquisition is orchestrated by the secretion of virulence factors that have evolved a diversity of forms (from effector proteins to small toxins), but which have converged in function (resource acquisition). A key observable virulence mechanism employed by a large number of…",
  "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."
}