Effects of ecological water transport on photosynthesis and chlorophyll fluorescence of Populus euphratica
Article
Article Title | Effects of ecological water transport on photosynthesis and chlorophyll fluorescence of Populus euphratica |
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ERA Journal ID | 4310 |
Article Category | Article |
Authors | Zhao, Chun Yan (Author), Si, Jian Hua (Author), Feng, Qi (Author), Yu, Teng Fei (Author), Deo, Ravinesh C. (Author) and Luo, Huan (Author) |
Journal Title | Water Science and Technology: Water Supply |
Journal Citation | 18 (5), pp. 1747-1756 |
Number of Pages | 10 |
Year | 2018 |
Place of Publication | United Kingdom |
ISSN | 0074-9583 |
0735-1917 | |
1606-9749 | |
1607-0798 | |
Digital Object Identifier (DOI) | https://doi.org/10.2166/ws.2017.236 |
Web Address (URL) | http://ws.iwaponline.com/content/early/2017/12/07/ws.2017.236 |
Abstract | This study investigating the physiological response of Populus euphratica (P. euphratica) to ecological water transport. Results showed significant increases in net photosynthetic (32.71%), stomatal conductance (27.58%), and transpiration (25.18%) rates of P. euphratica prior to the ecological water transport treatment. Internal CO2 concentrations (Ci) decreased significantly compared to the day preceding the treatment (23.69%; P < 0.05). During the treatment, the O, J, I, and P steps quickly increased, with the P step exhibiting the most significant change (P < 0.05). Moreover, Fv /Fm and Fv/Fo values were highest 7 d after the ecological water transport treatment. During the treatment, the initial fluorescence (F0), the maximal fluorescence intensity (Fm), PI, and RC/CSo quickly increased, with an increasing percentage of 9.67%, 46.15%, 59.17%, and 48.54%. In contrast, Vj, ABS/RC, TRo/RC, and ETo/RC rapidly decreased, with a decreasing percentage of 30.43%, 43.54%, 37.50%, and 39.04%, respectively. After the treatment, the average chlorophyll content of a, b, and a + b increased by 26.36%, 8.89%, and 21.93%, respectively, compared to the day preceding the treatment. This study also found that the relationship between soil water content and the net photosynthetic rate, stomatal conductance, the transpiration rate, the internal CO2 concentration, Fv/Fm, and Fv/Fo of P. euphratica were strongest during the ecological water transport. |
Keywords | chlorophyll fluorescence, ecological water transport, photosynthesis, Populus euphratica |
ANZSRC Field of Research 2020 | 410102. Ecological impacts of climate change and ecological adaptation |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Chinese Academy of Sciences, China |
Northwest Institute of Eco-Environment and Resources, China | |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4837/effects-of-ecological-water-transport-on-photosynthesis-and-chlorophyll-fluorescence-of-populus-euphratica
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