Document Detail


Hyperaccumulation of arsenic by callus, sporophytes and gametophytes of Pteris vittata cultured in vitro.
MedLine Citation:
PMID:  17589853     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The callus of Pteris vittata was induced from gametophytes generated from spores in vitro, and grew rapidly with periodical medium change. Arsenic tolerance and accumulation of P. vittata callus were compared with those of Arabidopsis thaliana callus. Cell death was not detected in P. vittata callus even at arsenate concentrations up to 2 mM; however, A. thaliana callus died at low (0.2 mM) arsenate concentrations. Meanwhile, P. vittata callus accumulated almost three times more As than A. thaliana callus when exposed to 0.2 mM arsenate. About 60% of the total As was removed when 7.5 g of P. vittata callus was cultured on 150 ml of half-strength MS liquid medium containing 450 microg As for 2 days. Furthermore, P. vittata callus, sporophytes, and gametophytes all grew well under 1 mM of arsenate and accumulated 1,250; 1,150 and 2,180 mg kg(-1 )dry weight As when grown on 2 mM arsenate for 15 or 30 days. The characteristics of non-differentiated cells, large biomass, ease of culture, good synchronization, and excellent As sequestering, make the callus of P. vittata a new ideal system to study the mechanisms of As hyperaccumulation and phytoremediation in As-contaminated groundwater.
Authors:
Xuexi Yang; Hui Chen; Wenzhong Xu; Zhenyan He; Mi Ma
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-23
Journal Detail:
Title:  Plant cell reports     Volume:  26     ISSN:  0721-7714     ISO Abbreviation:  Plant Cell Rep.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-09-12     Completed Date:  2007-11-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9880970     Medline TA:  Plant Cell Rep     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1889-97     Citation Subset:  IM    
Affiliation:
Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Arabidopsis / metabolism
Arsenic / metabolism*
Pteris / growth & development,  metabolism*
Chemical
Reg. No./Substance:
7440-38-2/Arsenic

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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