Effects of arsenic on maize growth, antioxidant system, and ion distribution
A greenhouse sand culture experiment was conducted to study the effects of arsenic (As) on the biomass accumulation, photosynthetic pigments, antioxidant system, and the absorption and distribution of As and mineral ions in maize Zhengdan 958. At lower concentrations (4 mg As x L(-1)), As inhibited...
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| Veröffentlicht in: | Ying yong sheng tai xue bao 2010-12, Vol.21 (12), p.3183-3190 |
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| creator | Hao, Yu-bo Liu, Hua-lin Ci, Xiao-ke Dong, Shu-ting Zhang, Ji-wang Liu, Peng |
| description | A greenhouse sand culture experiment was conducted to study the effects of arsenic (As) on the biomass accumulation, photosynthetic pigments, antioxidant system, and the absorption and distribution of As and mineral ions in maize Zhengdan 958. At lower concentrations (4 mg As x L(-1)), As inhibited the seedlings growth severely. At 2 mg As x L(-1), the chlorophyll a, b, and a+b contents reached their peaks; but with increasing As concentration, the chlorophyll contents decreased gradually. At 10 mg As x L(-1), the destruction of chloroplast structure and the dissolution of thylakoid membrane were observed by electron microscopy. With increasing As concentration, the activities of antioxidant enzymes SOD, POD, and CAT in root increased, and those in leaf reached the maximum at 8 mg As x L(-1). The sensibility of the enzymes in leaf to |
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At lower concentrations (<2 mg As x L(-1)), As stimulated the growth of maize seedlings, and increased the plant height, taproot length, and biomass accumulation significantly; at higher concentrations (>4 mg As x L(-1)), As inhibited the seedlings growth severely. At 2 mg As x L(-1), the chlorophyll a, b, and a+b contents reached their peaks; but with increasing As concentration, the chlorophyll contents decreased gradually. At 10 mg As x L(-1), the destruction of chloroplast structure and the dissolution of thylakoid membrane were observed by electron microscopy. With increasing As concentration, the activities of antioxidant enzymes SOD, POD, and CAT in root increased, and those in leaf reached the maximum at 8 mg As x L(-1). The sensibility of the enzymes in leaf to</description><identifier>ISSN: 1001-9332</identifier><identifier>PMID: 21443007</identifier><language>chi</language><publisher>China</publisher><subject>Arsenic - pharmacology ; Dose-Response Relationship, Drug ; Ions - metabolism ; Seedlings - growth & development ; Seedlings - metabolism ; Superoxide Dismutase - metabolism ; Zea mays - growth & development ; Zea mays - metabolism</subject><ispartof>Ying yong sheng tai xue bao, 2010-12, Vol.21 (12), p.3183-3190</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21443007$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hao, Yu-bo</creatorcontrib><creatorcontrib>Liu, Hua-lin</creatorcontrib><creatorcontrib>Ci, Xiao-ke</creatorcontrib><creatorcontrib>Dong, Shu-ting</creatorcontrib><creatorcontrib>Zhang, Ji-wang</creatorcontrib><creatorcontrib>Liu, Peng</creatorcontrib><title>Effects of arsenic on maize growth, antioxidant system, and ion distribution</title><title>Ying yong sheng tai xue bao</title><addtitle>Ying Yong Sheng Tai Xue Bao</addtitle><description>A greenhouse sand culture experiment was conducted to study the effects of arsenic (As) on the biomass accumulation, photosynthetic pigments, antioxidant system, and the absorption and distribution of As and mineral ions in maize Zhengdan 958. At lower concentrations (<2 mg As x L(-1)), As stimulated the growth of maize seedlings, and increased the plant height, taproot length, and biomass accumulation significantly; at higher concentrations (>4 mg As x L(-1)), As inhibited the seedlings growth severely. At 2 mg As x L(-1), the chlorophyll a, b, and a+b contents reached their peaks; but with increasing As concentration, the chlorophyll contents decreased gradually. At 10 mg As x L(-1), the destruction of chloroplast structure and the dissolution of thylakoid membrane were observed by electron microscopy. With increasing As concentration, the activities of antioxidant enzymes SOD, POD, and CAT in root increased, and those in leaf reached the maximum at 8 mg As x L(-1). 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| subjects | Arsenic - pharmacology Dose-Response Relationship, Drug Ions - metabolism Seedlings - growth & development Seedlings - metabolism Superoxide Dismutase - metabolism Zea mays - growth & development Zea mays - metabolism |
| title | Effects of arsenic on maize growth, antioxidant system, and ion distribution |
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