Incorporation of iron into chloroplasts triggers the restoration of cadmium induced inhibition of photosynthesis

Ádám Solti, E. Sárvári, Brigitta Tóth, I. Mészáros, F. Fodor

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Photosynthetic symptoms of acute Cd stress can be remedied by elevated Fe supply. To shed more light on the most important aspects of this recovery, the detailed Fe trafficking and accumulation processes as well as the changes in the status of the photosynthetic apparatus were investigated in recovering poplar plants. The Cd-free, Fe-enriched nutrient solution induced an immediate intensive Fe uptake. The increased Fe/Cd ratio in the roots initiated the translocation of Fe to the leaf with a short delay that ultimately led to the accumulation of Fe in the chloroplasts. The chloroplast Fe uptake was directly proportional to the Fe translocation to leaves. The accumulation of PSI reaction centers and the recovery of PSII function studied by Blue-Native PAGE and chlorophyll a fluorescence induction measurements, respectively, began in parallel to the increase in the Fe content of chloroplasts. The initial reorganization of PSII was accompanied by a peak in the antennae-based non-photochemical quenching. In conclusion, Fe accumulation of the chloroplasts is a process of prime importance in the recovery of photosynthesis from acute Cd stress.

Original languageEnglish
Pages (from-to)97-106
Number of pages10
JournalJournal of Plant Physiology
Volume202
DOIs
Publication statusPublished - Sep 1 2016

Fingerprint

Photosynthesis
Chloroplasts
Cadmium
cadmium
Iron
chloroplasts
photosynthesis
iron
uptake mechanisms
Native Polyacrylamide Gel Electrophoresis
Recovery of Function
antennae
signs and symptoms (plants)
nutrient solutions
leaves
Fluorescence
fluorescence
chlorophyll

Keywords

  • Cadmium
  • Chlorophyll-protein complexes
  • Chloroplast
  • Iron
  • Photosynthesis
  • Poplar

ASJC Scopus subject areas

  • Plant Science
  • Physiology
  • Agronomy and Crop Science

Cite this

Incorporation of iron into chloroplasts triggers the restoration of cadmium induced inhibition of photosynthesis. / Solti, Ádám; Sárvári, E.; Tóth, Brigitta; Mészáros, I.; Fodor, F.

In: Journal of Plant Physiology, Vol. 202, 01.09.2016, p. 97-106.

Research output: Contribution to journalArticle

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