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

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

Night-time leaf wetting process was analyzed in relation to micrometeorological conditions in a semi-arid cornfield and its effect was examined in the following morning with reference to the leaf-to-air humidity gradient which is a driving force in transpiration. Leaf wetness occurred due to dew for...

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Bibliographic Details
Published in:Biológia Vol. 70; no. 11; pp. 1485 - 1489
Main Authors: Yasutake, Daisuke, Makito Mori, Masaharu Kitano, Ryosuke Nomiyama, Yuta Miyoshi, Daisuke Hisaeda, Hiroyui Cho, Kenta Tagawa, Yueru Wu, Weizhen Wang
Format: Journal Article
Language:English
Published: Cham De Gruyter Open 01-11-2015
Springer International Publishing
Springer Nature B.V
Subjects:
air temperature
Arid environments
canopy
Cell Biology
Dew
dew formation
Humidity
leaf area
Leaves
Life Sciences
Microbiology
Plant Sciences
Semiarid environments
semiarid zones
Surface temperature
Transpiration
vapour pressure difference
Water loss
Water stress
Zea mays
Zoology
water stress
transpiration
dew formation
vapour pressure difference
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Summary:Night-time leaf wetting process was analyzed in relation to micrometeorological conditions in a semi-arid cornfield and its effect was examined in the following morning with reference to the leaf-to-air humidity gradient which is a driving force in transpiration. Leaf wetness occurred due to dew formation under clear and calm night conditions which decreased canopy surface temperature to the air dew-point temperature. The amount of dew on leaves collected around sunrise (06:00) was 26.4-104.3 g m⁻² · leaf area, which corresponded to 0.07-0.27 mm water. Leaf wetness remained until around 10:00 and significantly decreased leaf temperature. As a result, the leaf-to-air humidity gradient also decreased in the wetted leaf compared to the non-wetted leaf. These results suggest that night-time leaf wetting induces lower transpiration rate and may play a role in diminishing plant water stress due to excess transpirational water loss in the morning in semi-arid environments. Further studies are needed in order to demonstrate this possible effect.
Bibliography:http://dx.doi.org/10.1515/biolog-2015-0175
ISSN:1336-9563
0006-3088
1336-9563
DOI:10.1515/biolog-2015-0175