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题名: Effects of the decomposing liquid of Cladophora oligoclona on Hydrilla verticillata turion germination and seedling growth
作者: Zhang, Lu1, 2; Peng, Xue2; Liu, Biyun2; Zhang, Yi2; Zhou, Qiaohong2; Wu, Zhenbin1, 2
关键词: Cladophora oligoclona ; Decomposing liquid ; Germination ; Hydrilla verticillata ; Seedling growth
刊名: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
发表日期: 2018-08-15
DOI: 10.1016/j.ecoenv.2018.03.062
卷: 157, 页:81-88
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
英文摘要: Excessive proliferation of filamentous green algae (FGA) has been considered an important factor resulting in the poor growth or even decline of submerged macrophytes. However, there is a lack of detailed information regarding the effect of decaying FGA on submerged macrophytes. This study aimed to investigate whether the decomposing liquid from Cladophora oligoclona negatively affects Hydrilla verticillata turion germination and seedling growth. The results showed that the highest concentrations of decomposing liquid treatments inhibited the turion germination rate, which was the lowest than other treatments, at only 84%. The chlorophyll a fluorescence (JIP test) and physiological indicators (chlorophyll a content, soluble sugars, Ca2+/Mg2+-ATPase and PAL activity) were also measured. The chlorophyll a content in the highest concentration (40% of original decomposing liquid) treatment group decreased by 43.53% than that of the control; however, soluble sugars, Ca2+/Mg2+-ATPase, and PAL activity increased by 172.46%, 271.19%, and 26.43% respectively. The overall results indicated that FGA decay has a considerable effect on submerged macrophyte turion germination and seedling growth, which could inhibit their expansion and reproduction. This study emphasized the need to focus on effects of FGA decomposition on the early growth stages of submerged macrophytes and offered technological guidance for submerged vegetation restoration in lakes and shallow waters.
关键词[WOS]: SUBMERGED MACROPHYTES ; POTAMOGETON-CRISPUS ; FLUORESCENCE ; L. ; PHOTOSYNTHESIS ; MICROCYSTIS ; COMMUNITIES ; LEAVES ; STRESS ; BLOOMS
语种: 英语
项目资助者: Major Science and Technology Program for Water Pollution Control and Treatment of China 12th Five Year Plan(2012ZX07101007-005) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB05)
WOS记录号: WOS:000431835400009
ISSN号: 0147-6513
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50869
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.Wuhan Univ Technol, Sch Resource & Environm Engn, Wuhan 930070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
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