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Effects of CO2 Enrichment on Photosynthesis, Growth, and Biochemical Composition of Seagrass Thalassia hemprichii (Ehrenb.) Aschers
Jiang, ZJ; Huang, XP; Zhang, JP; xphuang@scsio.ac.cn
2010
Source PublicationJOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
Volume52Issue:10Pages:904-913
AbstractThe effects of CO2 enrichment on various ecophysiological parameters of tropical seagrass Thalassia hemprichii (Ehrenb.) Aschers were tested. T. hemprichii, collected from a seagrass bed in Xincun Bay, Hainan island of Southern China, was cultured at 4 CO2(aq) concentrations in flow-through seawater aquaria bubbled with CO2. CO2 enrichment considerably enhanced the relative maximum electron transport rate (RETRmax) and minimum saturating irradiance (E-k) of T. hemprichii. Leaf growth rate of CO2-enriched plants was significantly higher than that in unenriched treatment. Nonstructural carbohydrates (NSC) of T. hemprichii, especially in belowground tissues, increased strongly with elevated CO2(aq), suggesting a translocation of photosynthate from aboveground to belowground tissues. Carbon content in belowground tissues showed a similar response with NSC, while in aboveground tissues, carbon content was not affected by CO2 treatments. In contrast, with increasing CO2(aq), nitrogen content in aboveground tissues markedly decreased, but nitrogen content in belowground was nearly constant. Carbon: nitrogen ratio in both tissues were obviously enhanced by increasing CO2(aq). Thus, these results indicate that T. hemprichii may respond positively to CO2-induced acidification of the coastal ocean. Moreover, the CO2-stimulated improvement of photosynthesis and NSC content may partially offset negative effects of severe environmental disturbance such as underwater light reduction.
Department[Jiang, Zhi Jian; Huang, Xiao-Pin; Zhang, Jing-Ping] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Guangdong, Peoples R China; [Jiang, Zhi Jian; Zhang, Jing-Ping] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Subject AreaBiochemistry & Molecular Biology ; Plant Sciences
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Indexed Bysci
Funding ProjectLED
WOS IDWOS:000282374300006
Citation statistics
Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/6209
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorxphuang@scsio.ac.cn
Recommended Citation
GB/T 7714
Jiang, ZJ,Huang, XP,Zhang, JP,et al. Effects of CO2 Enrichment on Photosynthesis, Growth, and Biochemical Composition of Seagrass Thalassia hemprichii (Ehrenb.) Aschers[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2010,52(10):904-913.
APA Jiang, ZJ,Huang, XP,Zhang, JP,&xphuang@scsio.ac.cn.(2010).Effects of CO2 Enrichment on Photosynthesis, Growth, and Biochemical Composition of Seagrass Thalassia hemprichii (Ehrenb.) Aschers.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,52(10),904-913.
MLA Jiang, ZJ,et al."Effects of CO2 Enrichment on Photosynthesis, Growth, and Biochemical Composition of Seagrass Thalassia hemprichii (Ehrenb.) Aschers".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 52.10(2010):904-913.
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