Growth response and toxic effects of three antibiotics on Selenastrum capricornu

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Growth response and toxic effects of three antibiotics on Selenastrum capricornutum evaluated by photosynthetic rate and chlorophyll biosynthesis水利论文E6v j?7]$KO q j8w

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$rl-V$kOZ&g0zG.W(}0Abstract:水利论文I5J3ts'G?:ge

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The effects of three types of antibiotics (erythromycin,ciprofloxacin and sulfamethoxazole) on the photosynthesis of freshwater algae,Selenastrum capricornutum Printz,were investigated by determining the growth rate,chloroplast pigments content,seven main precursors (including δ-aminolevulinic acid,porphobilinogen,uroporphyrinogen Ⅲ,coproporphyrinogen Ⅲ,protoporphyrin Ⅸ,Mg-proporphyrin Ⅸ and protochlorophyllide),and photosynthetic rate during chlorophyll biosynthesis.The antibiotics significantly decreased the growth rate,chlorophyll content,and photosynthetic rate.Erythromycin induced a decreasing effect at a concentration of 0.06 mg/L,while ciprofloxacin and sulfamethoxazole achieved the same results at concentrations higher than 1.5 mg/L.Only erythromycin significantly inhibited chlorophyll biosynthesis,which indicated that it was considerably more toxic to S.capricornutum than ciprofloxacin and sulfamethoxazole,and may pose a high potential risk to aquatic ecosystems.水利论文,P*|JIZ

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作者:

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Binyang Liu[1]水利论文o+BW:\`x(_

1G3~h)aq ~1N R])I0Weiqiu Liu[2]水利论文Pe_q%gI#yN E

8K;e0N B$t*d#X L0Xiangping Nie[1]

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x)m^"VEvG~*I0Chao Guan[1]

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Yufeng Yang[1]

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R?s;]l0Zhaohui Wang[1]水利论文Oy] w f

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Wei Liao[1]

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a b {$AF0Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education,Institute of Hydrobiology, Jinan University, Guangzhou 510632, China水利论文,?6\ `(sB?

.FoWCyh8K'S0School of Life sciences, Sun Yat-Sen University, Guangzhou 510275, China

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环境科学学报(英文版)

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Journal of Environmental Sciences水利论文]5hZ ]~xwGP

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^OQtj+Xa02011, 23(9)水利论文;n?mY!|p

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Selenastrum capricornutum

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r+h C(` Z0erythromycin lactobionate

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ciprofloxacin hydrochloride水利论文7z/HyF~'p

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chlorophyll biosynthesis

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v]ppa,[^/[02012年1月15日水利论文#s?K$ph;X:IA

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wru#l;Un:Y!@0the National Natural Science Foundation of China,the National Natural Science Foundation-Joint Founds of Guangdong Province水利论文 ["K2p/q7m

i az1Cr$V*}0Growth response and toxic effects of three antibiotics on Selenastrum capricornutum evaluated by photosynthetic rate and chlorophyll biosynthesis

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[期刊论文] 环境科学学报(英文版)水利论文 bz @b*t@

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The effects of three types of antibiotics (erythromycin,ciprofloxacin and sulfamethoxazole) on the photosynthesis of freshwater algae,Selenastrum capricornutum Printz,were investigated by determining t...

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