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The Effect of Electrical Signals on Photosynthesis and Respiration

  • Andrej Pavlovič
Chapter

Abstract

Electrical signals are initial response of plant to the external stimuli. This type of signal may trigger different physiological responses. The most famous is the rapid leaf movement in carnivorous and sensitive plants. However, a lot of less visible changes in plant physiology may occur. This chapter focuses on the effect of action (APs) and variation potentials (VPs) on photosynthesis and respiration. First, experimental methods and setup for measurements of photosynthesis and respiration in response to electrical signals are described. Then detailed information about effect of AP and VP on CO2 metabolism in different plant species are summarized. Both light and dark reactions of photosynthesis, as well as rate of respiration, are affected by electrical signals, but the effect is often adverse (from inhibition to stimulation of photosynthesis). In addition, the stomatal conductance (gs), an important component of gas exchange, is also differently affected by electrical signals. Summarizing the data from numerous authors, the hypothesis about mechanism underlying photosynthetic limitation and stimulation of respiration is proposed.

Keywords

Photosynthetic Active Radiation Chlorophyll Fluorescence Electrical Signal Jasmonic Acid Cyclic Electron Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

1–qP

excitation pressure at photosystem II

ABA

abscisic acid

AP

action potential

DCMU

3-(3′,4′-dichlorophenyl)-1,1-dimethylurea

DW

dry weight

E

rate of transpiration

F0

minimal fluorescence level in dark-adapted leaves

F0

minimal fluorescence level "in the light"

Fm

maximal fluorescence level from dark adapted leaves

Fm

maximal fluorescence level in light-adapted leaves

Ft

steady-state fluorescence in the light

Fv

variable fluorescence

Fv/Fm

maximum quantum yield of photosystem II

gs

stomatal conductance

IAA

indole-3-acetic acid

JA

jasmonic acid

NPQ

non-photochemical quenching

OEC

oxygen evolving complex

OPDA

12-oxo-phytodienoic acid

PAR

photosynthetic active radiation

Pheo

pheophytin

PG

rate of gross photosynthesis

PN

rate of net photosynthesis

PSI

photosystem I

PSII

photosystem II

PQ

plastoquinone pool

QA

plastoquinone A

QB

plastoquinone B

qE

energy-dependent quenching

qI

photoinhibitory quenching

qT

state-transition quenching

qP

photochemical quenching

RD

rate of respiration

VP

variation potential

ΦPSII

effective photochemical quantum yield of photosystem II

Notes

Acknowledgments

This work was supported by the grant VEGA 1/0520/12 from the Scientific Grant Agency of the Ministry of Education of the Slovak Republic.

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Authors and Affiliations

  1. 1.Faculty of Natural Sciences, Department of Plant PhysiologyComenius University in BratislavaBratislavaSlovakia

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