Magnetic field effect on the chlorophyll fluorescence in Chlorella

Nicholas Geacintov, Francis van Nostrand, Martin Pope, Jack B. Tinkel

Research output: Contribution to journalArticle

Abstract

The chlorophyll a fluorescence in Chlorella pyrenoidosa can be enhanced by 4-9% if the excitation light beam is parallel to an external magnetic field or decreased by 4-9% if the light beam is oriented perpendicular to a magnetic field of about 16 kgauss or more. These effects cannot be explained in terms of the small changes in light absorption which are also observed. It is suggested that these observations are due to a reorientation of pigment molecules in the magnetic field.

Original languageEnglish (US)
Pages (from-to)486-491
Number of pages6
JournalBBA - Bioenergetics
Volume226
Issue number2
DOIs
StatePublished - Mar 2 1971

Fingerprint

Magnetic field effects
Chlorella
Magnetic Fields
Chlorophyll
Fluorescence
Magnetic fields
Light
Pigments
Light absorption
Molecules

ASJC Scopus subject areas

  • Biophysics
  • Medicine(all)

Cite this

Magnetic field effect on the chlorophyll fluorescence in Chlorella. / Geacintov, Nicholas; van Nostrand, Francis; Pope, Martin; Tinkel, Jack B.

In: BBA - Bioenergetics, Vol. 226, No. 2, 02.03.1971, p. 486-491.

Research output: Contribution to journalArticle

Geacintov, Nicholas ; van Nostrand, Francis ; Pope, Martin ; Tinkel, Jack B. / Magnetic field effect on the chlorophyll fluorescence in Chlorella. In: BBA - Bioenergetics. 1971 ; Vol. 226, No. 2. pp. 486-491.
@article{c54fd29de2b94a3d83dee662b49a1518,
title = "Magnetic field effect on the chlorophyll fluorescence in Chlorella",
abstract = "The chlorophyll a fluorescence in Chlorella pyrenoidosa can be enhanced by 4-9{\%} if the excitation light beam is parallel to an external magnetic field or decreased by 4-9{\%} if the light beam is oriented perpendicular to a magnetic field of about 16 kgauss or more. These effects cannot be explained in terms of the small changes in light absorption which are also observed. It is suggested that these observations are due to a reorientation of pigment molecules in the magnetic field.",
author = "Nicholas Geacintov and {van Nostrand}, Francis and Martin Pope and Tinkel, {Jack B.}",
year = "1971",
month = "3",
day = "2",
doi = "10.1016/0005-2728(71)90118-6",
language = "English (US)",
volume = "226",
pages = "486--491",
journal = "Biochimica et Biophysica Acta - Bioenergetics",
issn = "0005-2728",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Magnetic field effect on the chlorophyll fluorescence in Chlorella

AU - Geacintov, Nicholas

AU - van Nostrand, Francis

AU - Pope, Martin

AU - Tinkel, Jack B.

PY - 1971/3/2

Y1 - 1971/3/2

N2 - The chlorophyll a fluorescence in Chlorella pyrenoidosa can be enhanced by 4-9% if the excitation light beam is parallel to an external magnetic field or decreased by 4-9% if the light beam is oriented perpendicular to a magnetic field of about 16 kgauss or more. These effects cannot be explained in terms of the small changes in light absorption which are also observed. It is suggested that these observations are due to a reorientation of pigment molecules in the magnetic field.

AB - The chlorophyll a fluorescence in Chlorella pyrenoidosa can be enhanced by 4-9% if the excitation light beam is parallel to an external magnetic field or decreased by 4-9% if the light beam is oriented perpendicular to a magnetic field of about 16 kgauss or more. These effects cannot be explained in terms of the small changes in light absorption which are also observed. It is suggested that these observations are due to a reorientation of pigment molecules in the magnetic field.

UR - http://www.scopus.com/inward/record.url?scp=0015207656&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0015207656&partnerID=8YFLogxK

U2 - 10.1016/0005-2728(71)90118-6

DO - 10.1016/0005-2728(71)90118-6

M3 - Article

C2 - 5575169

AN - SCOPUS:0015207656

VL - 226

SP - 486

EP - 491

JO - Biochimica et Biophysica Acta - Bioenergetics

JF - Biochimica et Biophysica Acta - Bioenergetics

SN - 0005-2728

IS - 2

ER -