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Stomatal closure by ultraviolet-radiation

Negash, L and Björn, Lars Olof LU (1986) In Physiologia Plantarum 66(3). p.360-364
Abstract
The effect of ultraviolet radiation (UV) (255-325 nm) on stomatal closure was investigated on tef (Eragrostis tef (Zucc) Trotter) in the presence of white light (ca 50 .mu.mol m-2 s-1). The action spectrum showed that UV (ca 2 .mu.mol m-2 s-1, half band width about 10 nm) of 285 nm or shorter wavelengths was very efficient in causing stomatal closure. The effectiveness decreased sharply towards longer wavelengths. Radiation of 313 nm or longer wavelengths was practically without effect. Increasing UV intensity increased stomatal resistance. When stronger white light (5 to 9 times stronger than the one used during irradiation) was administered stomates re-opened rapidly irrespective of whether the UV was on or off, although a subsequent... (More)
The effect of ultraviolet radiation (UV) (255-325 nm) on stomatal closure was investigated on tef (Eragrostis tef (Zucc) Trotter) in the presence of white light (ca 50 .mu.mol m-2 s-1). The action spectrum showed that UV (ca 2 .mu.mol m-2 s-1, half band width about 10 nm) of 285 nm or shorter wavelengths was very efficient in causing stomatal closure. The effectiveness decreased sharply towards longer wavelengths. Radiation of 313 nm or longer wavelengths was practically without effect. Increasing UV intensity increased stomatal resistance. When stronger white light (5 to 9 times stronger than the one used during irradiation) was administered stomates re-opened rapidly irrespective of whether the UV was on or off, although a subsequent gradual closing tendency was observed when the UV was on. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physiologia Plantarum
volume
66
issue
3
pages
360 - 364
publisher
Wiley Online Library
external identifiers
  • scopus:0001308424
ISSN
0031-9317
DOI
10.1111/j.1399-3054.1986.tb05935.x
language
English
LU publication?
yes
id
91cc4f0a-dc95-45d9-aa8c-9ff3510d99d8 (old id 134581)
date added to LUP
2007-07-30 13:26:32
date last changed
2017-10-01 04:48:56
@article{91cc4f0a-dc95-45d9-aa8c-9ff3510d99d8,
  abstract     = {The effect of ultraviolet radiation (UV) (255-325 nm) on stomatal closure was investigated on tef (Eragrostis tef (Zucc) Trotter) in the presence of white light (ca 50 .mu.mol m-2 s-1). The action spectrum showed that UV (ca 2 .mu.mol m-2 s-1, half band width about 10 nm) of 285 nm or shorter wavelengths was very efficient in causing stomatal closure. The effectiveness decreased sharply towards longer wavelengths. Radiation of 313 nm or longer wavelengths was practically without effect. Increasing UV intensity increased stomatal resistance. When stronger white light (5 to 9 times stronger than the one used during irradiation) was administered stomates re-opened rapidly irrespective of whether the UV was on or off, although a subsequent gradual closing tendency was observed when the UV was on.},
  author       = {Negash, L and Björn, Lars Olof},
  issn         = {0031-9317},
  language     = {eng},
  number       = {3},
  pages        = {360--364},
  publisher    = {Wiley Online Library},
  series       = {Physiologia Plantarum},
  title        = {Stomatal closure by ultraviolet-radiation},
  url          = {http://dx.doi.org/10.1111/j.1399-3054.1986.tb05935.x},
  volume       = {66},
  year         = {1986},
}