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Seasonal variation of photosynthesis and photosynthetic efficiency in Phalaenopsis

Bruno Pollet UGent, Kathy Steppe UGent, Pieter Dambre, Marie-Christine Van Labeke UGent and Raoul Lemeur UGent (2010) PHOTOSYNTHETICA. 48(4). p.580-588
abstract
Nowadays, a quest for efficient greenhouse heating strategies, and its related effects on the plant’s performance, exists. In this study, the effects of a combination of warm days and cool nights in autumn and spring on the photosynthetic activity and efficiency of Phalaenopsis were evaluated; the latter, being poorly characterised in CAM plants and, to our knowledge, not reported before in Phalaenopsis. 24-h CO2 flux measurements and chlorophyll fluorescence analysis were performed in both seasons on Phalaenopsis ‘Hercules’ exposed to relatively constant temperature regimes, 25.5/24.0°C (autumn) and 30/27°C (spring) respectively, and distinctive warm day/cool night temperature regimes, 27/20°C (autumn) and 36/24°C (spring), respectively. Cumulated leaf net CO2 uptake of the distinctive warm day/cool night temperature regimes declined with 10-16% as compared to the more constant temperature regimes, while the efficiency of carbon fixation revealed no substantial differences in both seasons. Nevertheless, a distinctive warm day/cool night temperature regime seemed to induce photorespiration. Although photorespiration is expected not to occur in CAM, the suppression of the leaf net CO2 exchange during Phase II and Phase IV as well as the slightly lower efficiency of carbon fixation for the distinctive warm day/cool night temperature regimes confirms the involvement of photorespiration in CAM. A seasonal effect was reflected in the leaf net CO2 exchange rate with considerably higher rates in spring. In addition, sufficiently high PAR levels in spring led to an efficiency of carbon fixation of 1.06-1.27% which is about twice as high than in autumn. As a result, only in the case where a net energy reduction between the temperature regimes compensates for the reduction in net CO2 uptake, warm day/cool night temperature regimes may be recommended as a practical sustainable alternative.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
CHLOROPHYLL FLUORESCENCE, PHOSPHOENOLPYRUVATE CARBOXYLASE, NET CO2 UPTAKE, OPUNTIA-FICUS-INDICA, PLANT KALANCHOE-DAIGREMONTIANA, CRASSULACEAN ACID METABOLISM, quantum yield, temperature, photorespiration, chlorophyll fluorescence, CO2 assimilation, irradiance, crassulacean acid metabolism, SEDUM-PRAEALTUM, NIGHT TEMPERATURE, CAM PLANTS, CARBON-DIOXIDE
journal title
PHOTOSYNTHETICA
Photosynthetica
volume
48
issue
4
pages
580 - 588
Web of Science type
Article
Web of Science id
000286115100012
JCR category
PLANT SCIENCES
JCR impact factor
1.016 (2010)
JCR rank
98/185 (2010)
JCR quartile
3 (2010)
ISSN
0300-3604
DOI
10.1007/s11099-010-0075-7
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1099708
handle
http://hdl.handle.net/1854/LU-1099708
date created
2011-01-13 10:39:22
date last changed
2012-05-03 09:31:32
@article{1099708,
  abstract     = {Nowadays, a quest for efficient greenhouse heating strategies, and its related effects on the plant{\textquoteright}s performance, exists. In this study, the effects of a combination of warm days and cool nights in autumn and spring on the photosynthetic activity and efficiency of Phalaenopsis were evaluated; the latter, being poorly characterised in CAM plants and, to our knowledge, not reported before in Phalaenopsis. 24-h CO2 flux measurements and chlorophyll fluorescence analysis were performed in both seasons on Phalaenopsis {\textquoteleft}Hercules{\textquoteright} exposed to relatively constant temperature regimes, 25.5/24.0{\textdegree}C (autumn) and 30/27{\textdegree}C (spring) respectively, and distinctive warm day/cool night temperature regimes, 27/20{\textdegree}C (autumn) and 36/24{\textdegree}C (spring), respectively. Cumulated leaf net CO2 uptake of the distinctive warm day/cool night temperature regimes declined with 10-16\% as compared to the more constant temperature regimes, while the efficiency of carbon fixation revealed no substantial differences in both seasons. Nevertheless, a distinctive warm day/cool night temperature regime seemed to induce photorespiration. Although photorespiration is expected not to occur in CAM, the suppression of the leaf net CO2 exchange during Phase II and Phase IV as well as the slightly lower efficiency of carbon fixation for the distinctive warm day/cool night temperature regimes confirms the involvement of photorespiration in CAM. A seasonal effect was reflected in the leaf net CO2 exchange rate with considerably higher rates in spring. In addition, sufficiently high PAR levels in spring led to an efficiency of carbon fixation of 1.06-1.27\% which is about twice as high than in autumn. As a result, only in the case where a net energy reduction between the temperature regimes compensates for the reduction in net CO2 uptake, warm day/cool night temperature regimes may be recommended as a practical sustainable alternative.},
  author       = {Pollet, Bruno and Steppe, Kathy and Dambre, Pieter and Van Labeke, Marie-Christine and Lemeur, Raoul},
  issn         = {0300-3604},
  journal      = {PHOTOSYNTHETICA},
  keyword      = {CHLOROPHYLL FLUORESCENCE,PHOSPHOENOLPYRUVATE CARBOXYLASE,NET CO2 UPTAKE,OPUNTIA-FICUS-INDICA,PLANT KALANCHOE-DAIGREMONTIANA,CRASSULACEAN ACID METABOLISM,quantum yield,temperature,photorespiration,chlorophyll fluorescence,CO2 assimilation,irradiance,crassulacean acid metabolism,SEDUM-PRAEALTUM,NIGHT TEMPERATURE,CAM PLANTS,CARBON-DIOXIDE},
  language     = {eng},
  number       = {4},
  pages        = {580--588},
  title        = {Seasonal variation of photosynthesis and photosynthetic efficiency in Phalaenopsis},
  url          = {http://dx.doi.org/10.1007/s11099-010-0075-7},
  volume       = {48},
  year         = {2010},
}

Chicago
Pollet, Bruno, Kathy Steppe, Pieter Dambre, Marie-Christine Van Labeke, and Raoul Lemeur. 2010. “Seasonal Variation of Photosynthesis and Photosynthetic Efficiency in Phalaenopsis.” Photosynthetica 48 (4): 580–588.
APA
Pollet, B., Steppe, K., Dambre, P., Van Labeke, M.-C., & Lemeur, R. (2010). Seasonal variation of photosynthesis and photosynthetic efficiency in Phalaenopsis. PHOTOSYNTHETICA, 48(4), 580–588.
Vancouver
1.
Pollet B, Steppe K, Dambre P, Van Labeke M-C, Lemeur R. Seasonal variation of photosynthesis and photosynthetic efficiency in Phalaenopsis. PHOTOSYNTHETICA. 2010;48(4):580–8.
MLA
Pollet, Bruno, Kathy Steppe, Pieter Dambre, et al. “Seasonal Variation of Photosynthesis and Photosynthetic Efficiency in Phalaenopsis.” PHOTOSYNTHETICA 48.4 (2010): 580–588. Print.