Transport of DMAA and MMAA into rice (Oryza sativa L.) roots

DSpace/Manakin Repository

Search OPUS


Advanced Search

Browse

My Account

Show simple item record

dc.contributor.author Rahman, MA
dc.contributor.author Kadohashi, K
dc.contributor.author Maki, T
dc.contributor.author Hasegawa, H
dc.date.accessioned 2012-10-12T03:33:01Z
dc.date.issued 2011-01
dc.identifier.citation Environmental and Experimental Botany, 2011, 72 (1), pp. 41 - 46
dc.identifier.issn 0098-8472
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/18001
dc.description.abstract Arsenate (As(V)) transport into plant cells has been well studied. A study on rice (Oryza sativa L.) showed that arsenite is transported across the plasma membrane via glycerol transporting channels. Previous studies reported that the dimethylarsinic acid (DMAA) and monomethylarsonic acid (MMAA) uptake in duckweed (Spirodela polyrhiza L.) differed from that of As(V), and was unaffected by phosphate (H2PO4). This article reports the transport mechanisms of DMAA and MMAA in rice roots. Linear regression analysis showed that the DMAA and MMAA uptake in rice roots increased significantly (p = 0.0002 and =0.0001 for DMAA and MMAA, respectively) with the increase of exposure time. Concentration-dependent influx of DMAA and MMAA showed that the uptake data were well described by MichaelisMenten kinetics. The MMAA influx was higher than that of DMAA. The DMAA and MMAA uptake in rice roots were decreased significantly (p = 0.0001 and =0.0077 for DMAA and MMAA, respectively) with the increase of glycerol concentration indicating that DMAA and MMAA were transported into rice roots using the same mechanisms of glycerol. Glycerol is transported into plant cells by aquaporins, and DMAA and MMAA are transported in a dose-dependent manner of glycerol which reveals that DMAA and MMAA are transported into rice roots through glycerol transporting channels. The DMAA and MMAA concentration in the solution did not affect the inhibition of their uptake rate by glycerol.
dc.publisher Elsevier
dc.relation.hasversion Accepted manuscript version en_US
dc.relation.isbasedon 10.1016/j.envexpbot.2010.02.004
dc.title Transport of DMAA and MMAA into rice (Oryza sativa L.) roots
dc.type Journal Article
dc.parent Environmental and Experimental Botany
dc.journal.volume 1
dc.journal.volume 72
dc.journal.number 1 en_US
dc.publocation Amsterdam, The Netherlands en_US
dc.publocation Auckland, New Zealand
dc.identifier.startpage 41 en_US
dc.identifier.endpage 46 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.conference Image and Vision Computing New Zealand 2011 IVCNZ
dc.for 0502 Environmental Science and Management
dc.for 0703 Crop and Pasture Production
dc.personcode 112851
dc.percentage 60 en_US
dc.classification.name Crop and Pasture Production en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.date.activity 2011-11-29
dc.location.activity en_US
dc.location.activity Auckland, New Zealand
dc.description.keywords Arsenic
dc.description.keywords DMAA
dc.description.keywords MMAA
dc.description.keywords Rice (Oryza sativa L.)
dc.description.keywords Aquaporins
dc.description.keywords Influx
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Open Access
utslib.copyright.date 2015-04-15 12:23:47.074767+10
pubs.consider-herdc false
utslib.collection.history General (ID: 2)
utslib.collection.history School of the Environment (ID: 344)


Files in this item

This item appears in the following Collection(s)

Show simple item record