Title: Balancing photosynthetic light‐harvesting and light‐utilization capacities in potato leaf tissue during acclimation to different growth temperatures
Abstract: We investigated the effect of temperature during growth and development on the relationship between light‐harvesting capacity, indicated by chlorophyll concentration, and light‐utilization potential, indicated by light‐ and bicarbonate‐saturated photosynthetic oxygen evolution, in Solanum tuberosum L. cv. Norland. Conal plantles were transplanted and grown at 20°C for 2 weeks before transfer to 12, 16, 20, 24 and 28°C for 6 weeks. After 4 weeks of the temperature treatments, leaf tissue fresh weights per area were one‐third higher in plants grown at 12°C vs those grown at 28°C. Conversely, chlorophyll content per area in tissue grown at 12°C was less than one‐half of that of tissue grown at 28°C at 4 weeks. Photosynthetic capacity measured at a common temperature of 20°C and expressed on a chlorophyll basis was inversely proportional to growth temperature. Leaf tissue from plants grown at 12°C for 4 weeks had photosynthetic rates that were 3‐fold higher on a chlorophyll basis than comparable tissue from plants grown at 28°C. These results suggest that the relationship between light‐harvesting capacity and light‐utilization potential varies 3‐fold in response to the growth temperatures examined. The role of this response in avoidance of photoinhibition is discussed.
Publication Year: 1995
Publication Date: 1995-05-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 12
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