Three causes of variation in the photochemical reflectance index (PRI) in evergreen conifers

被引:174
|
作者
Wong, Christopher Y. S. [1 ]
Gamon, John A. [1 ,2 ]
机构
[1] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
[2] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada
基金
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词
acclimation; carotenoid:Chl ratios; cold stress; conifers; leaf pigments; photochemical reflectance index (PRI); photosynthetic down-regulation; xanthophyll cycle; LIGHT-USE EFFICIENCY; RADIATION-USE EFFICIENCY; LEAF PIGMENT CONTENT; SPECTRAL REFLECTANCE; XANTHOPHYLL CYCLE; BOREAL FOREST; MEDITERRANEAN FOREST; REMOTE ESTIMATION; COLD-ACCLIMATION; SEASONAL-CHANGES;
D O I
10.1111/nph.13159
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The photochemical reflectance index (PRI) reflects diurnal xanthophyll cycle activity and is also influenced by seasonally changing carotenoid:Chl pigment ratios. Both changing pigment pools and xanthophyll cycle activity contribute to photoprotection in evergreen conifers exposed to boreal winters, but they operate over different timescales, and their relative contribution to the PRI signal has often been unclear. To clarify these responses and their contribution to the PRI signal, leaf PRI, pigment composition, temperature and irradiance were monitored over 2yr for two evergreen conifers (Pinus contorta and Pinusponderosa) in a boreal climate. PRI was affected by three distinct processes operating over different timescales and exhibiting contrasting spectral responses. Over the 2yr study period, the greatest change in PRI resulted from seasonally changing carotenoid:Chl pigment ratios, followed by a previously unreported shifting leaf albedo during periods of deep cold. Remarkably, the smallest change was attributable to the xanthophyll cycle. To properly distinguish these three effects, interpretation of PRI must consider temporal context, physiological responses to evolving environmental conditions, and spectral response. Consideration of the separate mechanisms affecting PRI over different timescales could greatly improve efforts to monitor changing photosynthetic activity using optical remote sensing.
引用
收藏
页码:187 / 195
页数:9
相关论文
共 50 条
  • [41] Affecting Factors and Recent Improvements of the Photochemical Reflectance Index (PRI) for Remotely Sensing Foliar, Canopy and Ecosystemic Radiation-Use Efficiencies
    Zhang, Chao
    Filella, Iolanda
    Garbulsky, Martin F.
    Penuelas, Josep
    REMOTE SENSING, 2016, 8 (09):
  • [42] Analysis of Correlations between Indices of Photosynthetic Light Reactions and a Photochemical Reflectance Index (PRI) in Pea Leaves under Short-Term Illumination
    Sukhov, V. S.
    Gromova, E. N.
    Sukhova, E. M.
    Surova, L. M.
    Nerush, V. N.
    Vodeneev, V. A.
    BIOLOGICHESKIE MEMBRANY, 2019, 36 (01): : 32 - 43
  • [43] Analysis of Changes in Photochemical Reflectance Index (PRI) in Relation to the Acidification of the Lumen of the Chloroplasts of Pea and Geranium Leaves under a Short-Term Illumination
    Sukhova, E. M.
    Yudina, L. M.
    Vodeneev, V. A.
    Sukhov, V. S.
    BIOCHEMISTRY MOSCOW SUPPLEMENT SERIES A-MEMBRANE AND CELL BIOLOGY, 2019, 13 (03) : 243 - 252
  • [44] Detecting short-term stress and recovery events in a vineyard using tower-based remote sensing of photochemical reflectance index (PRI)
    Wong, Christopher Y. S.
    Bambach, Nicolas E.
    Alsina, Maria Mar
    McElrone, Andrew J.
    Jones, Taylor
    Buckley, Thomas N.
    Kustas, William P.
    Magney, Troy S.
    IRRIGATION SCIENCE, 2022, 40 (4-5) : 683 - 696
  • [45] Analysis of Changes in Photochemical Reflectance Index (PRI) in Relation to the Acidification of the Lumen of the Chloroplasts of Pea and Geranium Leaves under a Short-Term Illumination
    E. M. Sukhova
    L. M. Yudina
    V. A. Vodeneev
    V. S. Sukhov
    Biochemistry (Moscow), Supplement Series A: Membrane and Cell Biology, 2019, 13 : 243 - 252
  • [46] Detecting short-term stress and recovery events in a vineyard using tower-based remote sensing of photochemical reflectance index (PRI)
    Christopher Y. S. Wong
    Nicolas E. Bambach
    Maria Mar Alsina
    Andrew J. McElrone
    Taylor Jones
    Thomas N. Buckley
    William P. Kustas
    Troy S. Magney
    Irrigation Science, 2022, 40 : 683 - 696
  • [47] Photochemical Reflectance Index (PRI) Mapping using Drone-based Hyperspectral Image for Evaluation of Crop Stress and its Application to Multispectral Imagery
    Na, Sang-il
    Park, Chan-won
    So, Kyu-ho
    Ahn, Ho-yong
    Lee, Kyung-do
    KOREAN JOURNAL OF REMOTE SENSING, 2019, 35 (05) : 637 - 647
  • [48] Analysis of Connections Between Photochemical Reflectance Index (PRI) and Acidification of Lumen of Chloroplasts in Leaves of Geranium and Pea under Short-Term Illumination
    Sukhova, E. M.
    Yudina, L. M.
    Vodeneev, V. A.
    Sukhov, V. S.
    BIOLOGICHESKIE MEMBRANY, 2019, 36 (03): : 218 - 228
  • [49] Photosynthesis, chlorophyll fluorescence and photochemical reflectance index in photoinhibited leaves
    Hikosaka, Kouki
    FUNCTIONAL PLANT BIOLOGY, 2021, 48 (08) : 815 - 826
  • [50] Photochemical reflectance index as a mean of monitoring early water stress
    Sarlikioti, V.
    Driever, S. M.
    Marcelis, L. F. M.
    ANNALS OF APPLIED BIOLOGY, 2010, 157 (01) : 81 - 89