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题名: Growth responses and adaptations of the emergent macrophyte Acorus calamus Linn. to different water-level fluctuations
作者: Wei, Hua1, 2; Cheng, Shuiping3; He, Feng1; Liang, Wei1; Wu, Zhenbin1
通讯作者: Cheng, SP (reprint author), Tongji Univ, Minist Educ, Key Lab Yangtze River Water Environm, Shanghai 200092, Peoples R China.
关键词: water-level fluctuations ; biomass production ; biomass allocation ; shoot morphology ; root morphology ; Acorus calamus
刊名: JOURNAL OF FRESHWATER ECOLOGY
发表日期: 2014-01-02
DOI: 10.1080/02705060.2013.833142
卷: 29, 期:1, 页:101-115
收录类别: SCI
文章类型: Article
部门归属: [Wei, Hua; He, Feng; Liang, Wei; Wu, Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Wei, Hua] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China; [Cheng, Shuiping] Tongji Univ, Minist Educ, Key Lab Yangtze River Water Environm, Shanghai 200092, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Major Science and Technology Program for Water Pollution Control and Treatment [2009ZX07106-003, 2011ZX07303-001]
类目[WOS]: Ecology ; Limnology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
摘要: Acorus calamus Linn. was grown under four water-level fluctuation (WLF) treatments to study the influence of WLF on the growth of the species. The four WLF treatments (designated as 0cm, 60cm, 60 +/- 30cm, and 60 +/- 60cm) were initiated with the minimum water levels (0, 60, 30, and 0cm, respectively) for a week and then switched to the maximal water levels (0, 60, 90, and 120cm, respectively) one week later. This cycle was repeated six times during 12 weeks. Relative growth rate (RGR), biomass allocation, shoot and below-ground morphology, chlorophyll content, and concentrations of proline, malondialdehyde (MDA), and soluble sugar (SS) of A. calamus were measured. After the 12 weeks' WLF treatment, growth rate differed among the treatments. RGR was negative in the 60cm treatment. A. calamus showed significant morphological adaptations to WLFs, including different patterns in length, blade length, width and numbers of shoots. The root:shoot ratio was significantly greater in the 0cm treatment with no significant differences among the other three WLF treatments. SS concentrations in the rhizome and root were higher in the 60 +/- 60cm treatment than in either the 60cm treatment or 60 +/- 30cm treatment. No clear relationship was found among the treatments for chlorophyll concentrations, proline, or MDA concentrations in the shoots but fluctuating water levels significantly stimulated proline and MDA accumulation. The differences in biomass and morphological variables among treatments suggested that WLF is an important regulator of the growth of A. calamus and that the species is better adapted to cyclic WLFs than to constant deep water.
英文摘要: Acorus calamus Linn. was grown under four water-level fluctuation (WLF) treatments to study the influence of WLF on the growth of the species. The four WLF treatments (designated as 0cm, 60cm, 60 +/- 30cm, and 60 +/- 60cm) were initiated with the minimum water levels (0, 60, 30, and 0cm, respectively) for a week and then switched to the maximal water levels (0, 60, 90, and 120cm, respectively) one week later. This cycle was repeated six times during 12 weeks. Relative growth rate (RGR), biomass allocation, shoot and below-ground morphology, chlorophyll content, and concentrations of proline, malondialdehyde (MDA), and soluble sugar (SS) of A. calamus were measured. After the 12 weeks' WLF treatment, growth rate differed among the treatments. RGR was negative in the 60cm treatment. A. calamus showed significant morphological adaptations to WLFs, including different patterns in length, blade length, width and numbers of shoots. The root:shoot ratio was significantly greater in the 0cm treatment with no significant differences among the other three WLF treatments. SS concentrations in the rhizome and root were higher in the 60 +/- 60cm treatment than in either the 60cm treatment or 60 +/- 30cm treatment. No clear relationship was found among the treatments for chlorophyll concentrations, proline, or MDA concentrations in the shoots but fluctuating water levels significantly stimulated proline and MDA accumulation. The differences in biomass and morphological variables among treatments suggested that WLF is an important regulator of the growth of A. calamus and that the species is better adapted to cyclic WLFs than to constant deep water.
关键词[WOS]: CHLOROPHYLL FLUORESCENCE ; COMPLETE SUBMERGENCE ; LIPID-PEROXIDATION ; BIOMASS ALLOCATION ; TYPHA DOMINGENSIS ; WETLAND PLANTS ; LEMNA-MINOR ; SWEET FLAG ; DEPTH ; STRESS
语种: 英语
WOS记录号: WOS:000329776400008
ISSN号: 0270-5060
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20068
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
3.Tongji Univ, Minist Educ, Key Lab Yangtze River Water Environm, Shanghai 200092, Peoples R China

Recommended Citation:
Wei, Hua; Cheng, Shuiping; He, Feng; Liang, Wei; Wu, Zhenbin.Growth responses and adaptations of the emergent macrophyte Acorus calamus Linn. to different water-level fluctuations,JOURNAL OF FRESHWATER ECOLOGY,2014,29(1):101-115
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