Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis
Aeschynanthus longicaulis plants are understory plants in the forest, adapting to low light conditions in their native habitats. To observe the effects of the high irradiance on growth and physiology, plants were grown under two different light levels, PPFD 650 μmol·m–2·s–1 and 150 μmol·m–2·s–1 for...
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| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/347461 |
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| author | Qiansheng Li Min Deng Yanshi Xiong Allen Coombes Wei Zhao |
| author_facet | Qiansheng Li Min Deng Yanshi Xiong Allen Coombes Wei Zhao |
| author_sort | Qiansheng Li |
| collection | DOAJ |
| description | Aeschynanthus longicaulis plants are understory plants in the forest, adapting to low light conditions in their native habitats. To observe the effects of the high irradiance on growth and physiology, plants were grown under two different light levels, PPFD 650 μmol·m–2·s–1 and 150 μmol·m–2·s–1 for 6 months. Plants under high irradiance had significantly thicker leaves with smaller leaf area, length, width, and perimeter compared to the plants grown under low irradiance. Under high irradiance, the leaf color turned yellowish and the total chlorophyll decreased from 5.081 mg·dm−2 to 3.367 mg·dm−2. The anthocyanin content of high irradiance leaves was double that of those under low irradiance. The plants under high irradiance had significantly lower Amax (5.69 μmol·m–2·s–1) and LSP (367 μmol·m–2·s–1) and higher LCP (21.9 μmol·m–2·s–1). The chlorophyll fluorescence parameter Fv/Fm was significantly lower and NPQ was significantly higher in high irradiance plants. RLCs showed significantly lower ETRmax and Ek in plants under high irradiance. It can be concluded that the maximum PPFD of 650 μmol·m–2·s–1 led to significant light stress and photoinhibition of A. longicaulis. |
| format | Article |
| id | doaj-art-fee2e5f48cdb4a36a225938bc82f0021 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | The Scientific World Journal |
| spelling | doaj-art-fee2e5f48cdb4a36a225938bc82f00212025-08-20T03:25:39ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/347461347461Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulisQiansheng Li0Min Deng1Yanshi Xiong2Allen Coombes3Wei Zhao4School of Ecology, Shanghai Institute of Technology, Shanghai 201418, ChinaShanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden, Shanghai 201602, ChinaShanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden, Shanghai 201602, ChinaHerbarium and Botanic Garden, Benemerita Autonomous University of Puebla, 72000 Puebla, PUE, MexicoShanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden, Shanghai 201602, ChinaAeschynanthus longicaulis plants are understory plants in the forest, adapting to low light conditions in their native habitats. To observe the effects of the high irradiance on growth and physiology, plants were grown under two different light levels, PPFD 650 μmol·m–2·s–1 and 150 μmol·m–2·s–1 for 6 months. Plants under high irradiance had significantly thicker leaves with smaller leaf area, length, width, and perimeter compared to the plants grown under low irradiance. Under high irradiance, the leaf color turned yellowish and the total chlorophyll decreased from 5.081 mg·dm−2 to 3.367 mg·dm−2. The anthocyanin content of high irradiance leaves was double that of those under low irradiance. The plants under high irradiance had significantly lower Amax (5.69 μmol·m–2·s–1) and LSP (367 μmol·m–2·s–1) and higher LCP (21.9 μmol·m–2·s–1). The chlorophyll fluorescence parameter Fv/Fm was significantly lower and NPQ was significantly higher in high irradiance plants. RLCs showed significantly lower ETRmax and Ek in plants under high irradiance. It can be concluded that the maximum PPFD of 650 μmol·m–2·s–1 led to significant light stress and photoinhibition of A. longicaulis.http://dx.doi.org/10.1155/2014/347461 |
| spellingShingle | Qiansheng Li Min Deng Yanshi Xiong Allen Coombes Wei Zhao Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis The Scientific World Journal |
| title | Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis |
| title_full | Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis |
| title_fullStr | Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis |
| title_full_unstemmed | Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis |
| title_short | Morphological and Photosynthetic Response to High and Low Irradiance of Aeschynanthus longicaulis |
| title_sort | morphological and photosynthetic response to high and low irradiance of aeschynanthus longicaulis |
| url | http://dx.doi.org/10.1155/2014/347461 |
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