Linked Life Data

19959254

Source:http://linkedlifedata.com/resource/pubmed/id/19959254

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-3-8
pubmed:abstractText
Ferritins are iron-storage proteins which, in Arabidopsis, have a clear role in protection against oxidative stress. Plant ferritins are localized mainly in chloroplasts, but they can also be targeted to mitochondria; the ATFER4 ferritin isoform, according to bioinformatic subcellular predictors, has the highest scores for such localization in Arabidopsis. We isolated atfer4-2 mutant KO in the AtFer4 gene and we characterized it together with a second, independent mutant atfer4-1. We show that ATFER4 is indeed localized in mitochondria of Fe-treated Arabidopsis plants; when grown under Fe excess, atfer4 plants manifest, however, the same toxicity symptoms and O(2) consumption rates as wt plants. No enhanced sensitivity to oxidative conditions was observed in atfer4 seedlings exposed to salinity, osmotic stress, cold stress or oxidative stress elicited by paraquat. The growth response of roots and aerial parts in atfer4 plants under different light conditions was the same as wt. Also, the process of natural senescence, in which AtFer1 takes active part, was not perturbed in atfer4 plants. We conclude that the ATFER4 ferritin role in counteracting the environmental or developmental oxidative conditions in Arabidopsis plants is ancillary to that of the other isoforms, regardless of its mitochondrial localization.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1618-1328
pubmed:author
pubmed:copyrightInfo
Copyright 2009 Elsevier GmbH. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
15
pubmed:volume
167
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
453-60
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Knocking out of the mitochondrial AtFer4 ferritin does not alter response of Arabidopsis plants to abiotic stresses.
pubmed:affiliation
Sezione di Fisiologia e Biochimica delle Piante, Dipartimento di Biologia, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't