Significant transpirational water loss occurs throughout the night in field-grown tomato

Functional Plant Biology : FPB
Mairgareth A CairdTheodore C Hsiao

Abstract

Incomplete stomatal closure at night can result in substantial water loss at times when photosynthetic carbon gain is not occurring in C3 and C4 plant species. To investigate the magnitude of nighttime water loss for a crop species in the field, measurements of nighttime water loss by tomato (Lycopersicon esculentum Mill. cv. Heinz 8892) were made by three methods: a field-scale lysimeter and two leaf-level instruments, an automated viscous flow porometer and a portable photosynthesis system. The portable photosynthesis system indicated nighttime transpiration of 10% of maximal daytime transpiration and the viscous flow porometer demonstrated partially open stomata. Integrated crop water loss during the dark, non-photosynthetic hours measured on the lysimeter was 3-10.8% of total daily water loss. In the glasshouse, a survey of closely related wild and cultivated tomato species showed that under ambient conditions nighttime transpiration varied within and among species and was 8-33% of maximal daytime transpiration. Implications of such a substantial fraction of total daily crop water use occurring during the night are significant in agronomic, environmental, and economic terms. Further, variation within and among species in ni...Continue Reading

References

Jan 30, 2003·Journal of Experimental Botany·K A SnyderL A Donovan
Jan 11, 2007·Plant Physiology·Mairgareth A CairdLisa A Donovan
Jan 1, 2006·Functional Plant Biology : FPB·Margaret M BarbourGraham D Farquhar

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Citations

May 9, 2009·Plant, Cell & Environment·Ava R HowardLisa A Donovan
May 21, 2009·Physiologia Plantarum·Mairgareth A ChristmanJames H Richards
Jun 17, 2011·Plant, Cell & Environment·Kyounghee Kim, Xuhui Lee
Mar 1, 2009·American Journal of Botany·Hsien Ming Easlon, James H Richards
Jul 6, 2014·Tree Physiology·Michael A Forster
May 31, 2008·Plant, Cell & Environment·Mairgareth A ChristmanLisa A Donovan
Dec 14, 2011·The New Phytologist·Melanie J B ZeppelDavid T Tissue
Jan 1, 2009·Functional Plant Biology : FPB·Mairgareth A ChristmanJames H Richards
Aug 27, 2015·International Journal of Biometeorology·Jianguo GaoPing Zhao
Dec 17, 2008·Plant, Cell & Environment·Hsien Ming Easlon, James H Richards
Jun 12, 2020·Trends in Plant Science·Walid Sadok, S V Krishna Jagadish

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