Chitosan elicited immune response reduces photosynthetic electron transport and ion channel activity in the guard cells of Vicia

Attila Ördög, Barnabás Wodala, É. Hideg, F. Ayaydin, Z. Deák, F. Horváth

Research output: Contribution to journalArticle

Abstract

It has been shown that a fungal elicitor chitosan (CHT) inhibits the blue lightinduced stomatal opening and can trigger stomatal closure. These movements are related to the H+-ATPase activity in the guard cell (GC) plasma membrane that affects the transport of osmotically active solutes. The ATP for proton pumping is supplied mostly from mitochondrial respiration; however, a partial inhibition by DCMU implies a role of GC photosynthetic electron transport in the ATP supply. In order to investigate whether CHT affects the photosynthetic ATP production of Vicia GCs, the light-dependence of the photosynthetic electron transport rate (ETR) of individual GCs was assayed. In addition, to test the possible effect of CHT on the activity of ion channels, GC protoplasts were investigated by patch clamp technique.

Original languageEnglish
Pages (from-to)135-138
Number of pages4
JournalActa Biologica Szegediensis
Volume55
Issue number1
Publication statusPublished - 2011

Fingerprint

Vicia
guard cells
Chitosan
ion channels
Electron Transport
chitosan
Ion Channels
electron transfer
Adenosine Triphosphate
immune response
Cell membranes
Cell Membrane
Diuron
patch-clamp technique
H-transporting ATP synthase
Proton-Translocating ATPases
active transport
Protoplasts
Active Biological Transport
Clamping devices

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

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abstract = "It has been shown that a fungal elicitor chitosan (CHT) inhibits the blue lightinduced stomatal opening and can trigger stomatal closure. These movements are related to the H+-ATPase activity in the guard cell (GC) plasma membrane that affects the transport of osmotically active solutes. The ATP for proton pumping is supplied mostly from mitochondrial respiration; however, a partial inhibition by DCMU implies a role of GC photosynthetic electron transport in the ATP supply. In order to investigate whether CHT affects the photosynthetic ATP production of Vicia GCs, the light-dependence of the photosynthetic electron transport rate (ETR) of individual GCs was assayed. In addition, to test the possible effect of CHT on the activity of ion channels, GC protoplasts were investigated by patch clamp technique.",
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T1 - Chitosan elicited immune response reduces photosynthetic electron transport and ion channel activity in the guard cells of Vicia

AU - Ördög, Attila

AU - Wodala, Barnabás

AU - Hideg, É.

AU - Ayaydin, F.

AU - Deák, Z.

AU - Horváth, F.

PY - 2011

Y1 - 2011

N2 - It has been shown that a fungal elicitor chitosan (CHT) inhibits the blue lightinduced stomatal opening and can trigger stomatal closure. These movements are related to the H+-ATPase activity in the guard cell (GC) plasma membrane that affects the transport of osmotically active solutes. The ATP for proton pumping is supplied mostly from mitochondrial respiration; however, a partial inhibition by DCMU implies a role of GC photosynthetic electron transport in the ATP supply. In order to investigate whether CHT affects the photosynthetic ATP production of Vicia GCs, the light-dependence of the photosynthetic electron transport rate (ETR) of individual GCs was assayed. In addition, to test the possible effect of CHT on the activity of ion channels, GC protoplasts were investigated by patch clamp technique.

AB - It has been shown that a fungal elicitor chitosan (CHT) inhibits the blue lightinduced stomatal opening and can trigger stomatal closure. These movements are related to the H+-ATPase activity in the guard cell (GC) plasma membrane that affects the transport of osmotically active solutes. The ATP for proton pumping is supplied mostly from mitochondrial respiration; however, a partial inhibition by DCMU implies a role of GC photosynthetic electron transport in the ATP supply. In order to investigate whether CHT affects the photosynthetic ATP production of Vicia GCs, the light-dependence of the photosynthetic electron transport rate (ETR) of individual GCs was assayed. In addition, to test the possible effect of CHT on the activity of ion channels, GC protoplasts were investigated by patch clamp technique.

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