Abstract
Original language | English |
---|---|
Pages (from-to) | 61-66 |
Number of pages | 6 |
Journal | Free Radical Research Communications |
Volume | 8 |
Issue number | 1 |
Publication status | Published - 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
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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 -