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RESPONSES OF Elodea nuttallii AND Ceratophyllum demersum TO HIGH TEMPERATURE
Ma, Jian-Min; Jin, Tong-Xia; He, Feng; Wu, Juan; Cheng, Shui-Ping; Wu, Zhen-Bin; He, F, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2009
Source PublicationFRESENIUS ENVIRONMENTAL BULLETIN
Volume18Issue:9Pages:1588-1596
AbstractThere were large losses of exotic species Elodea nuttallii during summer in eutrophic lakes of the middle and lower reaches of the Yanatze River, China. To investigate the main causes, the heat tolerance of E. nuttallii was studied and compared with that of native species Ceratopkyllum demersum by using an aquaria system in the laboratory. Under 4500 lx light intensity and 12-h L/12-h D cycle, E. nuttallii cultured in 1/5 Hoaglands solution at 39 degrees C showed a positive growth rate during the first 15 days, and the growth rate was higher than that at 35 degrees C. But after 15 days, the growth rates became negative for those cultured both at 39 and 35 degrees C. However, the growth rate was positive for more than 20 days for those cultured at 25 degrees C. Under the same conditions, the growth rate, productivity and chlorophyll content of E. nuttallii were significantly higher than that of C. demersum. Heat tolerance of E. nuttallii was also stronger than that of C. demersum. The optimal temperature for the growth of the two plants depended on the experimental period: both plants grew at an optimal rate at higher temperature if the experimental period was short; nevertheless the plants achieved optimal growth at a lower temperature if the experiment was conducted for a longer period. At the same light intensity, the heat tolerance of C. demersum in tap water with sediment was markedly stronger than that of E. nuttallii at 39 degrees C. Average growth rate of C. demersum was 4.5 times higher than that of E. nuttallii within 25 days. The positive growth period lasted for less than 25 days for E. nuttallii and for more than 25 days for C. demersum. When they were cultured in 1/5 Hoaglands solution and in tap water with sediment, the growth rate of C. demersum increased from 0.4 to 79.4 mg/d.g fresh weight (FW) within 20 days. E. nuttallii increased from 8.3 to 24.4 mg/d-g FW within 20 days. Both grew better in tap water with sediment than in 1/5 Hoaglands solution. The results demonstrated that the nutritional status of the water other than the high temperature affected the heat tolerance of E. nuttallii during summer. E. nuttallii has great ecological safe risk in China.
KeywordElodea Nuttallii Ceratophyllum Demersum High Temperature Heat Tolerance Growth Rate
Department[He, Feng] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Ma, Jian-Min; Jin, Tong-Xia] Henan Normal Univ, Sch Life Sci, Henan Key Lab Environm Pollut Control, Xinxiang 453007, Peoples R China
Subject AreaEnvironmental Sciences
Funding OrganizationScience and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039]
Indexed BySCI
Language英语
WOS IDWOS:000270702200007
Funding OrganizationScience and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039] ; Science and Technology in the Tenth Five-Year Plan, China [2002AA601021]; Chinese Academy of Sciences [KSCX2-SW-102]; Henan province [0624440039]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7554
Collection期刊论文
Corresponding AuthorHe, F, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Ma, Jian-Min,Jin, Tong-Xia,He, Feng,et al. RESPONSES OF Elodea nuttallii AND Ceratophyllum demersum TO HIGH TEMPERATURE[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2009,18(9):1588-1596.
APA Ma, Jian-Min.,Jin, Tong-Xia.,He, Feng.,Wu, Juan.,Cheng, Shui-Ping.,...&He, F, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(2009).RESPONSES OF Elodea nuttallii AND Ceratophyllum demersum TO HIGH TEMPERATURE.FRESENIUS ENVIRONMENTAL BULLETIN,18(9),1588-1596.
MLA Ma, Jian-Min,et al."RESPONSES OF Elodea nuttallii AND Ceratophyllum demersum TO HIGH TEMPERATURE".FRESENIUS ENVIRONMENTAL BULLETIN 18.9(2009):1588-1596.
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