首页|Effect of cadmium on photosynthetic pigments, lipid peroxidation,antioxidants, and artemisinin in hydroponically grown Artemisia annua

Effect of cadmium on photosynthetic pigments, lipid peroxidation,antioxidants, and artemisinin in hydroponically grown Artemisia annua

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The effects of different cadmium(Cd)concentrations(0,20,60,and 100 μmol/L)on hydroponically grown Artemisia annua L.were investigated.Cd treatments applied for 0,4,12,24,72,144,216,and 336 hr were assessed by measuring the changes in photosynthetic pigments,electrolyte leakage,malondialdehyde(MDA)and antioxidants(ascorbic acid and glutathione),while the artemisinin content was tested after 0,12,144,216,and 336 hr.A significant decrease was observed in photosynthetic pigment levels over time with increasing Cd concentration.Chlorophyll b levels were more affected by Cd than were chlorophyll a or carotenoid levels.The cell membrane was sensitive to Cd stress,as MDA content in all treatment groups showed insignificant differences from the control group,except at 12 hr treatment time.Ascorbic acid(AsA)content changed slightly over time,while glutathione(GSH)content took less time to reach a maximum as Cd concentration increased.Cd was found to promote synthesis and accumulation of artemisinin,especially at concentrations of 20 and 100 μmol/L.In conclusion,Cd stress can damage to photosynthetic pigments,and vigorously growing A.annua showed a strong tolerance for Cd stress.Appropriate amounts of added Cd aided synthesis and accumulation of artemisinin.

cadmiumphotosynthetic pigmentsoxidative stressartemisininArtemisia annua

Xuan Li、Manxi Zhao、Lanping Guo、Luqi Huang

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School of Life Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China

Institute of Chinese Materia Medica,China Academy of Chinese Medical Sciences,Beijing 100700,China

国家自然科学基金国家自然科学基金Research Projects of State Administration of Traditional Chinese Medicine of ChinaImportant National Science & Technology Specific ProjectsImportant National Science & Technology Specific ProjectsResearch Projects of China Academy of Chinese Medical Sciences

81130070810729892011070092009ZX09502-0262009ZX09301-005ZZ20090302

2012

10.1016/S1001-0742(11)60920-0

环境科学学报(英文版)
中科院生态环境研究中心

环境科学学报(英文版)

CSTPCDCSCDSCI
影响因子：0.862
ISSN：1001-0742
年,卷(期)：2012.24(8)
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