{
  "abstract": "Optical sensing for plant stress detection requires physiologically relevant indices. Fv/Fm, representing the maximum quantum yield of photosystem II photochemistry, quantifies stress across species but requires dark adaptation, limiting field application. Photochemical reflectance index (PRI), a reflectance-based indicator of xanthophyll cycle activity, can be remotely measured, but its irregular variation complicates interpretation. Paddy rice was grown in temperature-gradient field chambers to evaluate Fv/Fm, PRI, and SPAD (soil-plant analysis development). Changes in Fv/Fm were associated with net leaf photosynthesis and showed sensitivity to stress affecting PSII, as its maximum value decreased under high-temperature stress. PRI exhibited a diurnal pattern similar to that of Fv/Fm, while the linear PRI-Fv/Fm relationship varied with SPAD values throughout the season. Utilizing this relationship, variation in Fv/Fm can be inferred from PRI and chlorophyll content, enabling spatial and temporal scaling and quantitative stress assessment. These findings support remote sensing-based plant stress diagnosis.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Applied Plant Science, Chonnam National University, 77 Yongbong-ro, 61186 Gwangju, Republic of Korea.",
    "National Agricultural Satellite Center, National Institute of Agricultural Science, Rural Development Administration, 310 Nongsaengmyeong-ro, 54875 Deokjin-gu, Jeonju-si, Republic of Korea.",
    "Smart Agricultural Technology Division, National Institute of Crop Science, Rural Development Administration, 20 Jeompiljae-ro, 50424 Miryang-si, Republic of Korea.",
    "Interdisciplinary Program for Agriculture & Life Science, Chonnam National University, 77 Yongbong-ro, 61186 Gwangju, Republic of Korea.",
    "BK21 Four Center for IT-Bio Convergence System Agriculture, Chonnam National University, 77 Yongbong-ro, 61186 Gwangju, Republic of Korea.",
    "Crop Environment Research Division, National Institute of Crop Sciences, Rural Development Administration, 181 Hyeoksin-ro, Iseo-myeon, 55365 Wanju-gun, Republic of Korea.",
    "AgriBio Institute of Climate Change Management, Chonnam National University, 77 Yongbong-ro, 61186 Gwangju, Republic of Korea."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "D Oh"
    },
    {
      "affs": [
        1
      ],
      "name": "J-H Ryu"
    },
    {
      "affs": [
        0
      ],
      "name": "K-M Kim"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "H Jeong"
    },
    {
      "affs": [
        0,
        4
      ],
      "name": "H-D Moon"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "H Kim"
    },
    {
      "affs": [
        0
      ],
      "name": "S Choi"
    },
    {
      "affs": [
        0,
        4
      ],
      "name": "B-K Kim"
    },
    {
      "affs": [
        0
      ],
      "name": "H Won"
    },
    {
      "affs": [
        0
      ],
      "name": "H Yang"
    },
    {
      "affs": [
        0,
        4,
        6
      ],
      "name": "J Cho",
      "orcid": "0000-0002-3375-4357"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1f1a76me87ycz.bib",
  "cited_by": 0,
  "doi": "10.32615/ps.2026.028",
  "fulltext_url": "https://europepmc.org/articles/PMC13725800",
  "id": "1f1a76me87ycz",
  "issns": [
    "0300-3604",
    "1573-9058"
  ],
  "landing_url": "https://europepmc.org/article/MED/42974346",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Research Paper"
    ],
    [
      "openalex",
      "2303|Remote Sensing in Agriculture"
    ]
  ],
  "openalex": "W7214974677",
  "pdf_url": "https://europepmc.org/articles/PMC13725800?pdf=render",
  "pmcid": "PMC13725800",
  "pmid": "42974346",
  "published": "2026-09-30",
  "publisher": "Institute of Experimental Botany ASCR",
  "ris": "https://research.draconitic.com/paper/1f1a76me87ycz.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:20:49Z",
      "native_id": "MED:42974346",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42974346"
    },
    {
      "first_seen": "2026-11-05T12:22:15Z",
      "native_id": "PMC13725800",
      "source": "pmc",
      "url": "https://doi.org/10.32615/ps.2026.028"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "openalex:2303|Remote Sensing in Agriculture",
      "subfield": "ecology"
    }
  ],
  "title": "Plant stress detection through a chlorophyll content-dependent relationship between Fv/Fm and the photochemical reflectance index.",
  "title_text": "Plant stress detection through a chlorophyll content-dependent relationship between Fv/Fm and the photochemical reflectance index.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:21:54Z",
  "url": "https://research.draconitic.com/paper/1f1a76me87ycz",
  "venue": "Photosynthetica",
  "versions": []
}