Analysis of leaf wetting effects on gas exchanges of corn using a whole-plant chamber system D., YOKOYAMA G., MARUO K., WU Y., WANG W., MORI M., KITANO M. (2018): Analysis of leaf wetting effects on gas exchanges of corn using a whole-plant chamber system. Plant Soil Environ., 64: 233-239.
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A whole-plant chamber system equipped with a transpiration sap flow meter was developed for measuring the transpiration rate even if leaves are wetted. A preliminary experiment in which dynamics of transpiration rate and/or evaporation rate of wetted and non-wetted plants were measured and compared with each other demonstrated the validity of the measurement system. The system was then used to analyse leaf wetting effects on gas exchange of corn under slight water stress conditions of soil (a volumetric soil water content of 9.7%). Leaf wetting decreased vapour pressure in leaves by decreasing leaf temperature but it increased vapour pressure in the air; therefore, vapour pressure difference between leaves and air, as a driving force of transpiration, was significantly lower in wetted plant. As a result, transpiration rate decreased by 44% and leaf conductance as an index of stomatal aperture was increased by leaf wetting. Such increasing leaf conductance due to leaf wetting increased the photosynthetic rate by 30% and therefore it improved water use efficiency (2.4 times). These results suggest that morning leaf wetting due to night time dew formation may have an advantage in crop production in semi-arid regions.

Bass B., Savdie I., Gillespie T.J. (1991): Simulation of leaf wetness duration for field corn. Agricultural and Forest Meteorology, 57, 69-84
Boucher J.-F., Munson A. D., Bernier P. Y. (1995): Foliar absorption of dew influences shoot water potential and root growth in Pinus strobus seedlings. Tree Physiology, 15, 819-823
Cassana F. F., Dillenburg L. R. (2013): The periodic wetting of leaves enhances water relations and growth of the long-lived conifer Araucaria angustifolia. Plant Biology, 15, 75-83
Eller Cleiton B., Lima Aline L., Oliveira Rafael S. (2016): Cloud forest trees with higher foliar water uptake capacity and anisohydric behavior are more vulnerable to drought and climate change. New Phytologist, 211, 489-501
HANBA Y. T., MORIYA A., KIMURA K. (2004): Effect of leaf surface wetness and wettability on photosynthesis in bean and pea. Plant, Cell and Environment, 27, 413-421
ISHIBASHI M., TERASHIMA I. (1995): Effects of continuous leaf wetness on photosynthesis: adverse aspects of rainfall. Plant, Cell and Environment, 18, 431-438
Jones H.G. (2014): Plants and Microclimate: A Quantitative Approach to Environmental Plant Physiology. 3rd Edition. New York, Cambridge University Press.
KOMORI Daisuke, KIM Wonsik (2016): Impact of dew deposition on water flux dynamics at a tropical rainfed paddy field in the dry season. Journal of Agricultural Meteorology, 72, 29-36
Kramer P.J., Boyer J.S. (1995): Water Relations of Plants and Soils. San Diego, Academic Press.
Monteith J.L., Unsworth M.H. (2013): Principles of Environmental Physics. 4nd Edition. Oxford, Elsevier Ltd.
NOMIYAMA Ryosuke, YASUTAKE Daisuke, SAGO Yuki, MORI Makito, TAGAWA Kenta, CHO Hiroyuki, WU Yueru, WANG Weizhen, KITANO Masaharu (2015): Evapotranspiration Integrated Model for Analysis of Soil Salinization Affected by Root Selective Absorption. Environment Control in Biology, 53, 199-204
Pan Yan-xia, Wang Xin-ping, Zhang Ya-feng (2010): Dew formation characteristics in a revegetation-stabilized desert ecosystem in Shapotou area, Northern China. Journal of Hydrology, 387, 265-272
Urrego-Pereira Yenny F., Martínez-Cob Antonio, Fernández Victoria, Cavero José (2013): Daytime Sprinkler Irrigation Effects on Net Photosynthesis of Maize and Alfalfa. Agronomy Journal, 105, 1515-
Wang Yueyue, Zhang Xiao, Xiao Xinhua, Heitman Joshua, Horton Robert, Ren Tusheng (2017): An Empirical Calibration for Heat-Balance Sap-Flow Sensors in Maize. Agronomy Journal, 109, 1122-
Yang Xiao-Dong, Lv Guang-Hui, Ali Arshad, Ran Qi-Yang, Gong Xue-Wei, Wang Fei, Liu Zhi-Dong, Qin Lu, Liu Wei-Guo (2017): Experimental variations in functional and demographic traits of Lappula semiglabra among dew amount treatments in an arid region. Ecohydrology, 10, e1858-
YASUTAKE Daisuke, HIDAKA Kota, SAGO Yuki, ARAKI Takuya, KITANO Masaharu, KOBAYASHI Tetsuo, ISHIKAWA Katsumi (2009): Absorption and Transport of Water and Ions in Corn and Sunflower Plants Grown Under Saline Conditions. Journal of Agricultural Meteorology, 65, 19-26
Yasutake Daisuke, Kitano Masaharu, Kobayashi Tetsuo, Hidaka Kota, Wajima Takahiro, He Wenjun (2006): Evaluation of canopy transpiration rate by applying a plant hormone “abscisic acid”. Biologia, 61, -
Yasutake Daisuke, Mori Makito, Kitano Masaharu, Nomiyama Ryosuke, Miyoshi Yuta, Hisaeda Daisuke, Cho Hiroyui, Tagawa Kenta, Wu Yueru, Wang Weizhen (2015): Night-time leaf wetting process and its effect on the morning humidity gradient as a driving force of transpirational water loss in a semi-arid cornfield. Biologia, 70, -
YASUTAKE Daisuke, YU Xiang, ASANO Tomoki, ISHIKAWA Masumi, MORI Makito, KITANO Masaharu, ISHIKAWA Katsumi (2014): Control of Greenhouse Humidity and Airflow with Fogging and Circulation Systems and Its Effect on Leaf Conductance in Cucumber Plants. Environmental Control in Biology, 52, 101-105
YOKOYAMA Gaku, YASUTAKE Daisuke, KITANO Masaharu (2018): A Preliminary Experiment on the Effects of Leaf Wetting on Gas Exchange in Tomato Leaves. Environment Control in Biology, 56, 13-16
Zeiger E (1983): The Biology of Stomatal Guard Cells. Annual Review of Plant Physiology, 34, 441-474
Zhang Qiang, Wang Sheng, Yang Fu-Lin, Yue Ping, Yao Tong, Wang Wen-Yu (2015): Characteristics of Dew Formation and Distribution, and Its Contribution to the Surface Water Budget in a Semi-arid Region in China. Boundary-Layer Meteorology, 154, 317-331
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