"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

The use of the chlorophyll fluorescence for estimation of photosynthetic electron transport flow in water stressed pea plants

S. APOSTOL1,* , C. STIHI1, C. OROS1

Affiliation

  1. Physics Department, Faculty of Sciences and Arts, Valahia University, 24 Bd. Unirii, Targoviste, Romania

Abstract

The main act in the photochemical conversion of light energy by plants in the photosynthesis process is the delivery of electron from special chlorophyll molecule from the reaction center of photosystems, after the light absorption at the antennae level. This photochemical reaction is the driving force of the photosynthesis, and is followed by the electron conduction in the molecular transport chain up to the consumer: chemical machinery located in the stroma that performed biochemical reactions of synthesis of organic matter starting from inorganic CO2 in the chloroplast. In this paper we analyze the photochemical light reactions in photosynthesis from spectroscopic point of view, discussing also the similarities with the photoelectric effect. Starting from the optical and spectroscopic properties of the chlorophyll, main pigment in the photosynthesis, we have used the fluorescence emitted by chlorophyll in vivo for the estimation of the quantum yield of photochemistry and the electron flow in the electron transport chain, comparing the values obtained under water stress for pea plants..

Keywords

Photosynthesis, Blue green fluorescence, Chlorophyll fluorescence.

Submitted at: Nov. 30, 2005
Accepted at: Sept. 18, 2007

Citation

S. APOSTOL, C. STIHI, C. OROS, The use of the chlorophyll fluorescence for estimation of photosynthetic electron transport flow in water stressed pea plants, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 9, pp. 2921-2925 (2007)