Protective action of abscisic acid against the inhibition of photosynthesis of barley leaves by bisulphite

C. N. N'Soukpoè-Kossi, A. G. Ivanov, K. Veeranjaneyulu, R. M. Leblanc

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Abstract

The inhibition of photosynthetic activity by bisulphite was studied in intact leaves of abscisic acid (ABA)-treated and non-treated (control) barley plants. ABA inhibited the photosynthetic process as evidenced by lower values of chlorophyll fluorescence kinetic parameters F(v)/F(m) (photosystem 2 activity) and R(fd) (vitality index, related to the whole photosynthetic activity) compared with ABA-non-treated plants. After bisulphite treatment, the extent of inhibition was smaller in ABA-treated plants than in the control ones indicating a protective effect of ABA. The protective action sites of ABA were the Q(A) reduction and the Calvin cycle.

Original languageEnglish (US)
Pages (from-to)51-60
Number of pages10
JournalPhotosynthetica
Volume36
Issue number1-2
StatePublished - Jan 1 1999

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Keywords

  • Chlorophyll fluorescence
  • Hordeum vulgare
  • Photoacoustic spectroscopy
  • Photosystem 2

ASJC Scopus subject areas

  • Plant Science

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