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

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a@3~&Eq?0Abstract:水利论文H iI0ge C7V:\(?$`

r!MLSu0The 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.

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作者:

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Author:

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C*uQ7@!q8GRx~0Binyang Liu[1]

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Weiqiu Liu[2]水利论文t:W Mm+~H

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Chao Guan[1]

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Yufeng Yang[1]

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}6Vs"C+|y4}7UJ0Zhaohui Wang[1]

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~8xkN~#Q.ST_0Wei Liao[1]水利论文F$^ v"rB2cg

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)p7D1^-] s8k0Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education,Institute of Hydrobiology, Jinan University, Guangzhou 510632, China

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,z~#l;cM0School of Life sciences, Sun Yat-Sen University, Guangzhou 510275, China

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4Us0WFr1D0期 刊:

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(L:b8W.y+K(z0环境科学学报(英文版)水利论文pDo"q`3P X

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Journal of Environmental Sciences

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HeGP*GP4w%T,Q5pR02011, 23(9)水利论文 ?(iq {^{:B

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Keywords:

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Selenastrum capricornutum水利论文 X XP DJO%?L8tV1@

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erythromycin lactobionate水利论文3C$zlIy:^s,b

#AAeIs3ry0ciprofloxacin hydrochloride

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\"m(~GS\l(H0sulfamethoxazole水利论文/md%nl!T'?)|C

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chlorophyll biosynthesis

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机标分类号:水利论文^W(pH3|l6c%\)`

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在线出版日期:水利论文,^Gks8bw Z@ d

PEjRu,QCyq3f02012年1月15日

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基金项目:

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the National Natural Science Foundation of China,the National Natural Science Foundation-Joint Founds of Guangdong Province

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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%q5Po{3u'Tk

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[期刊论文] 环境科学学报(英文版)

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--2011, 23(9)水利论文a?8A%YW9A4Tq

Gg!|'i f0The 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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