Light and Water Conditions Co-Regulated Stomata and Leaf Relative Uptake Rate (LRU) during Photosynthesis and COS Assimilation: A Meta-Analysis

Pengyuan Wang, Shaoqiang Wang, Bin Chen, Muhammad Amir, Lei Wang, Jinghua Chen, Li Ma, Xiaobo Wang, Yuanyuan Liu and Kai Zhu
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Pengyuan Wang: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Shaoqiang Wang: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Bin Chen: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Muhammad Amir: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Lei Wang: Hefei Institute of Physical Science, Chinese Academy of Sciences (CAS), Hefei 230031, China
Jinghua Chen: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Li Ma: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Xiaobo Wang: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Yuanyuan Liu: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China
Kai Zhu: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing 100101, China

Sustainability, 2022, vol. 14, issue 5, 1-26

Abstract: As a trace gas involved in hydration during plant photosynthesis, carbonyl sulfide (COS) and its leaf relative uptake rate (LRU) is used to reduce the uncertainties in simulations of gross primary productivity (GPP). In this study, 101 independent observations were collected from 22 studies. We extracted the LRU, stomatal conductance (g s ), canopy COS and carbon dioxide (CO 2 ) fluxes, and relevant environmental conditions (i.e., light, temperature, and humidity), as well as the atmospheric COS and CO 2 concentrations ( C a , COS and C a , CO 2 ). Although no evidence was found showing that g s regulates LRU, they responded in opposite ways to diurnal variations of environmental conditions in both mixed forests (LRU: Hedges’d = −0.901, LnRR = −0.189; g s : Hedges’d = 0.785, LnRR = 0.739) and croplands dominated by C3 plants (Hedges’d = −0.491, LnRR = −0.371; g s : Hedges’d = 1.066, LnRR = 0.322). In this process, the stomata play an important role in COS assimilation (R 2 = 0.340, p = 0.020) and further influence the interrelationship of COS and CO 2 fluxes (R 2 = 0.650, p = 0.000). Slight increases in light intensity (R 2 = 1, p = 0.002) and atmospheric drought (R 2 = 0.885, p = 0.005) also decreased the LRU. The LRU saturation points of C a,COS and C a,CO2 were observed when ΔC a,COS ≈ 13 ppt (R 2 = 0.580, p = 0.050) or ΔC a,CO2 ≈ −18 ppm (R 2 = 0.970, p = 0.003). This study concluded that during plant photosynthesis and COS assimilation, light and water conditions co-regulated the stomata and LRU.

Keywords: meta-analysis; carbonyl sulfide (COS); carbon dioxide (CO 2 ); leaf relative uptake rates (LRU); stomatal conductance; environmental conditions (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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