Effects of soil moisture regimes on photosynthesis and growth in cattail (Typha latifolia) |
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| Institution: | 1. Department of Biology, The University of Memphis, Memphis, TN 38152, USA;2. W. Harry Feinstone Center for Genomic Research, The University of Memphis, Memphis, TN 38152, USA;1. Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, PR China;2. CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yellow River Delta Field Observation and Research Station of Coastal Wetland Ecosystem, YICCAS, Yantai Shandong 264003, PR China;3. School of Resources and Environmental Engineering, Ludong University, Yantai Shandong 264025, PR China;1. Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China;2. State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai''an, China;3. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China;1. College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China;2. Everbright Water Technology Development (Nanjing) Co., Ltd, Nanjing, Jiangsu 211106, PR China;3. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China;1. Department of Ecosystem Biology, University of South Bohemia in ?eské Budějovice, Brani?ovská 31a, 370 05 ?eské Budějovice, Czech Republic;2. Department of Forest Sciences, University of Helsinki, P. O. Box 27, FI-00014 University of Helsinki, Finland;3. Natural Resources Institute Finland (LUKE), Latokartanonkaari 9, FI-00790 Helsinki, Finland;1. University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany;2. King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, Jeddah, 21589, Saudi Arabia;3. University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33 516, Kafr El-Sheikh, Egypt;4. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550082, Guiyang, PR China;5. University of Rostock, Faculty of Agricultural and Environmental Science, Soil Science, Justus-von-Liebig-Weg 6, 18051, Rostock, Germany;6. Department of Agricultural Chemistry, National Taiwan University, 1 Sect. 4, Roosevelt Rd., Taipei, 10617, Taiwan;7. University of Rostock, Department of Life, Light, and Matter (LLM), Albert-Einstein-Str. 25, 18059, Rostock, Germany;8. University of Sejong, Department of Environment, Energy and Geoinformatics, Guangjin-Gu, Seoul, 05006, Republic of Korea |
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| Abstract: | Both waterlogging and water deficiency are major environmental factors affecting plant growth and functioning in many wetland and floodplain ecosystems across North America. Wetland plants possess various characteristics that enable them to survive and function in the intermittently flooded wetland environments, while their sensitivity to drought has received less attention. The present study quantified the photosynthetic and growth responses of cattail (Typha latifolia), an important species of freshwater wetlands, to a wide range of soil moisture regimes. In addition, changes in the efficiency of photosynthetic apparatus following initiation of the treatments were investigated. Under greenhouse conditions, seedlings were subjected to four soil moisture regimes: (1) drained (control), (2) continuous flooding, (3) periodic flooding, and (4) periodic drought. Results indicated that dark fluorescence yield was increased in response to periodic drought, while it showed decreases under continuous flooding. Net photosynthesis and stomatal conductance were enhanced by continuous flooding and periodic flooding. In contrast, these parameters exhibited reduction under periodic drought. In addition, leaf chlorophyll content was adversely affected by periodic drought. Recovery of net photosynthesis was noted, along with enhanced height growth, in both continuously and periodically flooded plants. Meanwhile, continuous flooding enhanced biomass production while periodic drought led to biomass reduction. Periodic drought also contributed to substantial reduction in root growth compared with shoot growth. Therefore, the combined photosynthetic performance and growth responses of cattail are likely to contribute to the ability of this species to thrive in flooded condition but be susceptive to periodic drought. |
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