Integration of electron flow partitioning improves estimation of photosynthetic rate under various environmental conditions based on chlorophyll fluorescence
Integration of electron flow partitioning improves estimation of photosynthetic rate under various environmental conditions based on chlorophyll fluorescence
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电子流分配的集成改进了基于叶绿素荧光的各种环境条件下光合速率的估计
DOI:
10.1016/j.rse.2020.112273
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发表时间:
2021
影响因子:
13.5
通讯作者:
Agathokleous Evgenios
中科院分区:
文献类型:
--
作者:
Kitao Mitsutoshi;Yasuda Yukio;Kodani Eiji;Harayama Hisanori;Awaya Yoshio;Komatsu Masabumi;Yazaki Kenichi;Tobita Hiroyuki;Agathokleous Evgenios
Electron transport rate (ETR), estimated from chlorophyll fluorescence, is a widely-used indicator of photosynthetic activity. However, net photosynthetic CO2assimilation rate (A) does not linearly correlate with ETR when the fraction of electron partitioning into photosynthesis and photorespiration changes under fluctuating environmental conditions (CO2, light, temperature and soil moisture).Here, we propose a practical approach to estimate A based on ETR with integration of stomatal conductance (gs) and leaf temperature, taking intercellular CO2concentration (Ci)- and temperature-dependent electron partitioning into account.A estimated with the present approach was in good agreement with A measured under i) various CO2concentrations and light intensities in seedlings of Japanese beech and Japanese white birch, and ii) under 400 and 800 μmol mol−1CO2and temperatures of 15–40 °C, and iii) in progress of drought stress after a water withholding in seedlings of Japanese white birch. Furthermore, canopy-level CO2uptake could be estimated based on the spectroscopic and flux observations over a Japanese beech stand, under a wide range of environmental conditions.The present approach is advantageous because it does not require biochemical information, such as the maximum rates of Rubisco carboxylation and electron transport, providing a more forward approach to estimate terrestrial carbon flux through remote sensing approaches.
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影响因子:
6.4
作者:
Masabumi Komatsu;H. Tobita;Makoto Watanabe;K. Yazaki;T. Koike;M. Kitao
通讯作者:
M. Kitao
DOI:
--
发表时间:
2005
期刊:
Physiological Plantarum 125
影响因子:
--
作者:
Kitao;M.;Koike;T.;Tobita;H.;Maruyama;Y.
通讯作者:
Y.
影响因子:
1.5
作者:
Y. Yasuda;T. Saito;D. Hoshino;K. Ono;Y. Ohtani;Y. Mizoguchi;Takeshi Morisawa
通讯作者:
Takeshi Morisawa
影响因子:
7.3
作者:
Kosugi, Y;Shibata, S;Kobashi, S
通讯作者:
Kobashi, S
影响因子:
7.4
作者:
R. Radmer;B. Kok;O. Ollinger
通讯作者:
O. Ollinger