Salt stress effects on the photosynthetic electron transport chain in two chickpea lines differing in their salt stress tolerance

Nuran Çiçek, Abdallah Oukarroum, Reto J. Strasser, G. Schansker

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The main objective of this study was to evaluate the effects of salt stress on the photosynthetic electron transport chain using two chickpea lines (Cicer arietinum L.) differing in their salt stress tolerance at the germination stage (AKN 87 and AKN 290). Two weeks after sowing, seedlings were exposed to salt stress for 2 weeks and irrigated with 200 ml of 200 mM NaCl every 2 days. The polyphasic OJIP fluorescence transient and the 820-nm transmission kinetics (photosystem I) were used to evaluate the effects of salt stress on the functionality of the photosynthetic electron transport chain. It was observed that a signature for salt stress was a combination of a higher J step (VJ), a smaller IP amplitude, and little or no effect on the primary quantum yield of PSII (φPo). We observed for AKN 290 a shorter leaf life cycle, which may represent a mechanism to cope with salt stress. For severely salt-stressed leaves, an inhibition of electron flow between the PQ pool and P700 was found. The data also suggest that the properties of electron flow beyond PSI are affected by salt stress.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalPhotosynthesis Research
DOIs
Publication statusAccepted/In press - Nov 9 2017

Fingerprint

Salt-Tolerance
Cicer
electron transport chain
Electron Transport
stress tolerance
salt stress
Salts
electrons
Electrons
Photosystem I Protein Complex
photosystem I
Cicer arietinum
Germination
Life Cycle Stages
Seedlings
Quantum yield
leaves
life cycle (organisms)
sowing
Fluorescence

Keywords

  • 820-nm transmission
  • Chickpea
  • Leaf life cycle length
  • Polyphasic OJIP fluorescence transient
  • Salt stress

ASJC Scopus subject areas

  • Biochemistry
  • Plant Science
  • Cell Biology

Cite this

Salt stress effects on the photosynthetic electron transport chain in two chickpea lines differing in their salt stress tolerance. / Çiçek, Nuran; Oukarroum, Abdallah; Strasser, Reto J.; Schansker, G.

In: Photosynthesis Research, 09.11.2017, p. 1-11.

Research output: Contribution to journalArticle

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