Advanced

Response to directional light by leaves of a sun-tracking lupine (Lupinus Succulentus)

Vogelmann, T C and Björn, Lars Olof LU (1983) In Physiologia Plantarum 59(4). p.533-538
Abstract
Experiments were done to examine the phototrophic response of sun-tracking leaves of Lupinus succulentus Dougl. to fixed beams of white and broad band light. Upon irradiation with 15 W m-2 white light that struck the laminae at an angle of 45°, there was a 45–60 min lag period prior to leaf movement. The greatest rate of movement was 15° h-1, and reorientation ceased when leaves attained a position within 15° of perpendicular to the light beam. Laminar movement was largely pulvinar, and a 60 min inductive light treatment was sufficient to activate a maximum pulvinar response in subsequent darkness. Light striking the lamina at angles between 20 and 70° induced similar maximum pulvinar responses and only light that struck the upper... (More)
Experiments were done to examine the phototrophic response of sun-tracking leaves of Lupinus succulentus Dougl. to fixed beams of white and broad band light. Upon irradiation with 15 W m-2 white light that struck the laminae at an angle of 45°, there was a 45–60 min lag period prior to leaf movement. The greatest rate of movement was 15° h-1, and reorientation ceased when leaves attained a position within 15° of perpendicular to the light beam. Laminar movement was largely pulvinar, and a 60 min inductive light treatment was sufficient to activate a maximum pulvinar response in subsequent darkness. Light striking the lamina at angles between 20 and 70° induced similar maximum pulvinar responses and only light that struck the upper (adaxial) leaf surface was effective. Leaf tracking was fully activated by blue light but not by red or yellow light. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physiologia Plantarum
volume
59
issue
4
pages
533 - 538
publisher
Wiley Online Library
external identifiers
  • scopus:84989678907
ISSN
0031-9317
DOI
10.1111/j.1399-3054.1983.tb06276.x
language
English
LU publication?
yes
id
67d36d91-4f14-4dd4-a64c-af5e688732e1 (old id 134603)
date added to LUP
2007-07-30 13:14:56
date last changed
2017-09-24 04:21:10
@article{67d36d91-4f14-4dd4-a64c-af5e688732e1,
  abstract     = {Experiments were done to examine the phototrophic response of sun-tracking leaves of Lupinus succulentus Dougl. to fixed beams of white and broad band light. Upon irradiation with 15 W m-2 white light that struck the laminae at an angle of 45°, there was a 45–60 min lag period prior to leaf movement. The greatest rate of movement was 15° h-1, and reorientation ceased when leaves attained a position within 15° of perpendicular to the light beam. Laminar movement was largely pulvinar, and a 60 min inductive light treatment was sufficient to activate a maximum pulvinar response in subsequent darkness. Light striking the lamina at angles between 20 and 70° induced similar maximum pulvinar responses and only light that struck the upper (adaxial) leaf surface was effective. Leaf tracking was fully activated by blue light but not by red or yellow light.},
  author       = {Vogelmann, T C and Björn, Lars Olof},
  issn         = {0031-9317},
  language     = {eng},
  number       = {4},
  pages        = {533--538},
  publisher    = {Wiley Online Library},
  series       = {Physiologia Plantarum},
  title        = {Response to directional light by leaves of a sun-tracking lupine (Lupinus Succulentus)},
  url          = {http://dx.doi.org/10.1111/j.1399-3054.1983.tb06276.x},
  volume       = {59},
  year         = {1983},
}