Plants Under Drought-Stress Generate Activated Oxygen

Adam Huw Price, N M Atherton, G A F Hendry

Research output: Contribution to journal › Article

122 Citations (Scopus)

Abstract

Lysed chloroplasts prepared from droughted wheat plants generate 02 on illumination as detected by electron spin resonance spectroscopy, the amplitude of the signal increasing with the severity of water deprivation. Following a similar time-course as radical formation and chlorophyll destruction, there was a significant increase in the accumulation of iron in the droughted shoots to reach an estimated concentration in the cell sap of about 2.5 mM. The evidence suggests that superoxide generated as a result of impaired electron transport in the chloroplasts reacts with the high concentration of accumulating iron resulting in the formation of hydroxyl radical, the probable cause of the primary pathologies observed in droughted plants.
Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalFree Radical Research Communications
Volume8
Issue number1
Publication statusPublished - 1989

Keywords

  • wheat
  • superoxide
  • hydroxyl radical
  • iron
  • drought

Cite this

Plants Under Drought-Stress Generate Activated Oxygen. / Price, Adam Huw; Atherton, N M ; Hendry, G A F .

In: Free Radical Research Communications, Vol. 8, No. 1, 1989, p. 61-66.

Research output: Contribution to journal › Article

Price, AH, Atherton, NM & Hendry, GAF 1989, 'Plants Under Drought-Stress Generate Activated Oxygen', Free Radical Research Communications, vol. 8, no. 1, pp. 61-66.
Price AH, Atherton NM, Hendry GAF. Plants Under Drought-Stress Generate Activated Oxygen. Free Radical Research Communications. 1989;8(1):61-66.
Price, Adam Huw ; Atherton, N M ; Hendry, G A F . / Plants Under Drought-Stress Generate Activated Oxygen. In: Free Radical Research Communications. 1989 ; Vol. 8, No. 1. pp. 61-66.
@article{d205f217efb44d07a2f1332010271a98,
title = "Plants Under Drought-Stress Generate Activated Oxygen",
abstract = "Lysed chloroplasts prepared from droughted wheat plants generate 02 on illumination as detected by electron spin resonance spectroscopy, the amplitude of the signal increasing with the severity of water deprivation. Following a similar time-course as radical formation and chlorophyll destruction, there was a significant increase in the accumulation of iron in the droughted shoots to reach an estimated concentration in the cell sap of about 2.5 mM. The evidence suggests that superoxide generated as a result of impaired electron transport in the chloroplasts reacts with the high concentration of accumulating iron resulting in the formation of hydroxyl radical, the probable cause of the primary pathologies observed in droughted plants.",
keywords = "wheat, superoxide, hydroxyl radical, iron, drought",
author = "Price, {Adam Huw} and Atherton, {N M} and Hendry, {G A F}",
year = "1989",
language = "English",
volume = "8",
pages = "61--66",
journal = "Free Radical Research Communications",
issn = "8755-0199",
publisher = "Taylor and Francis Ltd.",
number = "1",

}

TY - JOUR

T1 - Plants Under Drought-Stress Generate Activated Oxygen

AU - Price, Adam Huw

AU - Atherton, N M

AU - Hendry, G A F

PY - 1989

Y1 - 1989

N2 - Lysed chloroplasts prepared from droughted wheat plants generate 02 on illumination as detected by electron spin resonance spectroscopy, the amplitude of the signal increasing with the severity of water deprivation. Following a similar time-course as radical formation and chlorophyll destruction, there was a significant increase in the accumulation of iron in the droughted shoots to reach an estimated concentration in the cell sap of about 2.5 mM. The evidence suggests that superoxide generated as a result of impaired electron transport in the chloroplasts reacts with the high concentration of accumulating iron resulting in the formation of hydroxyl radical, the probable cause of the primary pathologies observed in droughted plants.

AB - Lysed chloroplasts prepared from droughted wheat plants generate 02 on illumination as detected by electron spin resonance spectroscopy, the amplitude of the signal increasing with the severity of water deprivation. Following a similar time-course as radical formation and chlorophyll destruction, there was a significant increase in the accumulation of iron in the droughted shoots to reach an estimated concentration in the cell sap of about 2.5 mM. The evidence suggests that superoxide generated as a result of impaired electron transport in the chloroplasts reacts with the high concentration of accumulating iron resulting in the formation of hydroxyl radical, the probable cause of the primary pathologies observed in droughted plants.

KW - wheat

KW - superoxide

KW - hydroxyl radical

KW - iron

KW - drought

M3 - Article

VL - 8

SP - 61

EP - 66

JO - Free Radical Research Communications

JF - Free Radical Research Communications

SN - 8755-0199

IS - 1

ER -