Photosynthetic inorganic carbon acquisition in 30 freshwater macrophytes
文献类型：期刊论文
| 作者 | Yin, Liyan2,3; Li, Wei3; Madsen, Tom V.1; Maberly, Stephen C.4; Bowes, George5 |
| 刊名 | AQUATIC BOTANY
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 140页码:48-54 |
| ISSN号 | 0304-3770 |
| 关键词 | Bicarbonate use CAM C-4 metabolism Photosynthesis Freshwater macrophytes |
| DOI | 10.1016/j.aquabot.2016.05.002 |
| 英文摘要 | Photosynthetic inorganic carbon (C-i) acquisition mechanisms were surveyed in 30 freshwater macrophytes grown under uniform, nutrient-sufficient, low C-i conditions where C-i is a potentially limiting factor on plant photosynthesis. In pH-drift experiments there was evidence for HCO3- use in 21 of the 30 species that were able to raise the solution pH above 10.0. Titratable acidity had distinct diel fluctuations in the leaves of Nechamandra alternifolia, Egeria densa, Vallisneria spinulosa, Deinostema violaceum, and Isoetes sinensis (aerial and submersed), which suggests some degree of Crassulacean Acid Metabolism (CAM) in these species. Incubation of D. violaceum under low C-i conditions substantially increased the amount of acidity and the difference between night and day. The phosphoenolpyruvate carboxylase (PEPC) activity in Hydrilla verticillata, V. spinulosa, E. densa, D. violaceum, Ottelia acuminate, and O. alismoides ranged from 32.4 +/- 6.6 to 156.8 +/- 5.3 mu mol mg(-1) protein h(-1) and the ratio of PEPC to ribulose bisphosphate carboxylase-oxygenase (Rubisco) activity ranged from 1.0 to 2.9. When O. alismoides and D. violaceum were incubated under conditions that greatly reduced daytime C-i the PEPC activity was around 1.5 times higher than in untreated leaves. A high PEPC to Rubisco activity ratio, and the increased ratio under low C-i conditions, is consistent with a facultative C-4 or CAM system. These results indicated that most of the freshwater macrophytes tested can use HCO3- as a carbon source, while O. alismoides, and D. violaceum may possess C-4 or CAM characteristics like H. verticillata and I. howellii, and thus are worthy of further study. (C) 2016 Published by Elsevier B.V. |
| 资助项目 | National Natural Science Foundation of China[30700083] ; National Natural Science Foundation of China[31460089] ; Karst Dynamics Laboratory[KDL201304] ; MLR ; GZAR ; Chinese Academy of Science[2010T2S14] ; Chinese Academy of Science[2015VBA023] ; UK Natural Environment Research Council |
| WOS研究方向 | Plant Sciences ; Marine & Freshwater Biology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000405044500008 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1372]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Li, Wei |
| 作者单位 | 1.Aarhus Univ, Dept Biol Sci, Plant Biol, Ole Worms Alle 1135, DK-8000 Aarhus C, Denmark 2.Hainan Univ, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou 570228, Peoples R China 3.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 4.Lancaster Environm Ctr, Lake Ecosyst Grp, Ctr Ecol & Hydrol, Lib Ave, Lancaster LA1 4AP, England 5.Univ Florida, Dept Biol, 220 Bartram Hall, Gainesville, FL 32611 USA |
| 推荐引用方式 GB/T 7714 | Yin, Liyan,Li, Wei,Madsen, Tom V.,et al. Photosynthetic inorganic carbon acquisition in 30 freshwater macrophytes[J]. AQUATIC BOTANY,2017,140:48-54. |
| APA | Yin, Liyan,Li, Wei,Madsen, Tom V.,Maberly, Stephen C.,&Bowes, George.(2017).Photosynthetic inorganic carbon acquisition in 30 freshwater macrophytes.AQUATIC BOTANY,140,48-54. |
| MLA | Yin, Liyan,et al."Photosynthetic inorganic carbon acquisition in 30 freshwater macrophytes".AQUATIC BOTANY 140(2017):48-54. |
入库方式： OAI收割
来源：武汉植物园
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