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Effect of ultraviolet-radiation and leakage of RB-86+ in guard-cells of Vicia-Faba

Negash, L; Jensen, P and Björn, Lars Olof LU (1987) In Physiologia Plantarum 69(2). p.200-204
Abstract
The effects of UV-C (254 nm), UV-A (365 nm) and broad-band UV (280-380 nm) on guard cells of Vicia faba L. cv. Long Pod were investigated in the presence of white light (450 .mu.mol m-2 s-1). UV-C (7 .mu.mol m-2 s-1) was found to cause leakage of 86Rb+ from guard cells, while UV-A (0.3 .mu.mol m-2 s-1) stimulated increased uptake in these cells. A relatively small stimulatory effect was observed by broad-band UV (3 .mu.mol m-2 s-1) during the first 30 min of irradiation with an apparent equilibration of influx and efflux thereafter. Leakage of 86Rb+ from guard cells continued despite the removal of UV-C and an increase in the amount of white light from 450 to 1500 .mu.mol m-2 s-1, suggesting that membranes were irreversibly damaged.... (More)
The effects of UV-C (254 nm), UV-A (365 nm) and broad-band UV (280-380 nm) on guard cells of Vicia faba L. cv. Long Pod were investigated in the presence of white light (450 .mu.mol m-2 s-1). UV-C (7 .mu.mol m-2 s-1) was found to cause leakage of 86Rb+ from guard cells, while UV-A (0.3 .mu.mol m-2 s-1) stimulated increased uptake in these cells. A relatively small stimulatory effect was observed by broad-band UV (3 .mu.mol m-2 s-1) during the first 30 min of irradiation with an apparent equilibration of influx and efflux thereafter. Leakage of 86Rb+ from guard cells continued despite the removal of UV-C and an increase in the amount of white light from 450 to 1500 .mu.mol m-2 s-1, suggesting that membranes were irreversibly damaged. Irradiation of guard cells UV-C for 30, 45 and 90 min indicated that these cells began to be affected already by 30 min UV-C irradiation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physiologia Plantarum
volume
69
issue
2
pages
200 - 204
publisher
Wiley Online Library
ISSN
0031-9317
DOI
10.1111/j.1399-3054.1987.tb04276.x
language
English
LU publication?
yes
id
8e76285e-6018-4a59-b180-3d65344e49ca (old id 134563)
date added to LUP
2007-07-31 16:04:27
date last changed
2016-04-16 04:01:31
@article{8e76285e-6018-4a59-b180-3d65344e49ca,
  abstract     = {The effects of UV-C (254 nm), UV-A (365 nm) and broad-band UV (280-380 nm) on guard cells of Vicia faba L. cv. Long Pod were investigated in the presence of white light (450 .mu.mol m-2 s-1). UV-C (7 .mu.mol m-2 s-1) was found to cause leakage of 86Rb+ from guard cells, while UV-A (0.3 .mu.mol m-2 s-1) stimulated increased uptake in these cells. A relatively small stimulatory effect was observed by broad-band UV (3 .mu.mol m-2 s-1) during the first 30 min of irradiation with an apparent equilibration of influx and efflux thereafter. Leakage of 86Rb+ from guard cells continued despite the removal of UV-C and an increase in the amount of white light from 450 to 1500 .mu.mol m-2 s-1, suggesting that membranes were irreversibly damaged. Irradiation of guard cells UV-C for 30, 45 and 90 min indicated that these cells began to be affected already by 30 min UV-C irradiation.},
  author       = {Negash, L and Jensen, P and Björn, Lars Olof},
  issn         = {0031-9317},
  language     = {eng},
  number       = {2},
  pages        = {200--204},
  publisher    = {Wiley Online Library},
  series       = {Physiologia Plantarum},
  title        = {Effect of ultraviolet-radiation and leakage of RB-86+ in guard-cells of Vicia-Faba},
  url          = {http://dx.doi.org/10.1111/j.1399-3054.1987.tb04276.x},
  volume       = {69},
  year         = {1987},
}