Linked Life Data

21348874

Source:http://linkedlifedata.com/resource/pubmed/id/21348874

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2011-5-12
pubmed:abstractText
Recent studies have revealed that microRNAs (miRNAs) regulate plant adaptive responses to nutrient deprivation. However, the functional significance of miRNAs in adaptive responses to nitrogen (N) limitation remains to be explored. The Arabidopsis miR169 was strongly down-regulated, whereas its targets, NFYA (Nuclear Factor Y, subunit A) family members, were strongly induced by nitrogen N starvation. Analysis of the expression of miR169 precursors showed that MIR169a was substantially down-regulated in both roots and shoots by N starvation. Accumulation of the NFYA family members was suppressed in transgenic Arabidopsis with constitutive expression of MIR169a. Transgenic Arabidopsis plants overexpressing MIR169a accumulated less N and were more sensitive to N stress than the wild type. N sensitivity of 35S::MIR169a might be attributable to impaired uptake systems. These results provide evidence that miRNAs have functional roles in helping plants to cope with fluctuations in N availability in the soil.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1469-8137
pubmed:author
pubmed:copyrightInfo
© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.
pubmed:issnType
Electronic
pubmed:volume
190
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
906-15
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Involvement of miR169 in the nitrogen-starvation responses in Arabidopsis.
pubmed:affiliation
Key Laboratory of Plant and Soil Interactions, Ministry of Education, China, and College of Resources and Environmental Sciences, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't