Photosynthetic pigments and efficiencies of two Phragmites australis stands in different nitrogen availabilities |
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| Institution: | 1. Institut für Biologie/AG Ökologie, Humboldt-Universität, Unter den Linden 6, D-10099 Berlin, Germany;2. Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstr. 3, D-06466 Gatersleben, Germany;1. State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi, China;2. State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100091, China;3. Hybrid Rapeseed Research Centre of Shaanxi Province, Yangling 712100, Shaanxi, China;1. Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou 256603, China;2. Shandong Province Key Laboratory of Soil Erosion and Ecological Restoration, Forestry College, Shandong Agricultural University, Taian 271018, China;3. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;1. Fujian Provincial Key Laboratory of Subtropical Plant Physiology and Biochemistry, Fujian Institute of Subtropical Botany, Xiamen, 361006, People''s Republic of China;2. Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, People''s Republic of China;3. National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081, People''s Republic of China;1. Research Center for Environmental Genomics, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan;2. Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan;3. Chemical Analysis Research Center, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan |
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| Abstract: | Two contrasting ecotypes of Phragmites australis adapted to high (Lake Templiner See: Templ) and low (Lake Parsteiner See: Par1) N supply were investigated regarding the leaf content of photosynthetic pigments. Pigment contents were greatest in middle leaves compared to uppermost (still developing) and lowest leaves (already senescent). The highest content was always yielded by chlorophyll a followed by chlorophyll b>lutein>β-carotene>neoxanthin>violaxanthin>zeaxanthin>antheraxanthin. Pigment patterns were similar when comparing both stands. However, the contents per leaf area (and per dry weight) of all pigments were up to three-fold higher at Templ versus Par1. Differences in N supply are most likely the cause. Although, the productivity of Templ reed was about 10-fold higher than that of Par1, the latter showed a two-fold higher biomass gain per chlorophyll a content (60.8 versus 31.3 g dry weight g−1 chlorophyll a). This reflects the higher efficiency of the Par1 reed adapted to N-limited growth. It is concluded that site conditions, especially N availability, were determining stand-specific variations in content of photosynthetic pigments. |
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