English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The metal ion transporter IRT1 is necessary for iron homeostasis and efficient photosynthesis in Arabidopsis thaliana

Varotto, C., Maiwald, D., Pesaresi, P., Jahns, P., Salamini, F., & Leister, D. (2002). The metal ion transporter IRT1 is necessary for iron homeostasis and efficient photosynthesis in Arabidopsis thaliana. Plant Journal, 31(5), 589-599.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3D93-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3D95-7
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Varotto, C.1, 2, Author              
Maiwald, D.1, Author              
Pesaresi, P.1, Author              
Jahns, P., Author
Salamini, F.1, Author              
Leister, D.1, Author              
Affiliations:
1Dept. of Plant Breeding and Yield Physiology (Francesco Salamini), MPI for Plant Breeding Research, Max Planck Society, ou_1113570              
2Dept. of Molecular Plant Genetics (Heinz Saedler), MPI for Plant Breeding Research, Max Planck Society, ou_1113568              

Content

show
hide
Free keywords: iron transporter; IRT1; IRT2; Arabidopsis thaliana; photosynthesis; T-DNA; transposon
 Abstract: The mutants irt1-1 and irt1-2 of Arabidopsis thaliana were identified among a collection of T-DNA-tagged lines on the basis of a decrease in the effective quantum yield of photosystem II. The mutations responsible interfere with expression of IRT1 , a nuclear gene that encodes the metal ion transporter IRT1. In irt1 mutants, photosensitivity and chlorophyll fluorescence parameters, as well as abundance and composition of the photosynthetic apparatus, are significantly altered. Additional effects of the mutation under greenhouse conditions, including chlorosis and a drastic reduction in growth rate and fertility, are compatible with a deficiency in iron transport. Propagation of irt1 plants on media supplemented with additional quantities of iron salts restores almost all aspects of wild-type behaviour. The irt2-1 mutant, which carries an En insertion in the highly homologous IRT2 gene of Arabidopsis thaliana , was identified by reverse genetics and shows no symptoms of iron deficiency. This, together with the finding that irt1-1 can be complemented by 35S ::IRT1 but not by 35S ::IRT2 , demonstrates that, although the products of the two genes are closely related, only At IRT1 is required for iron homeostasis under physiological conditions.

Details

show
hide
Language(s): eng - English
 Dates: 2002-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 28788
ISI: 000177753200004
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Plant Journal
  Alternative Title : Plant J.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 31 (5) Sequence Number: - Start / End Page: 589 - 599 Identifier: ISSN: 0960-7412