Skip to main content
padlock icon - secure page this page is secure

Free Content The phytochrome B encoded by the HLG locus of Nicotiana plumbaginifolia is required for detection of photoperiod: hlg mutants show altered regulation of flowering and circadian movement

Download Article:

You have access to the full text article on a website external to Ingenta Connect.

Please click here to view this article on Wiley Online Library.

You may be required to register and activate access on Wiley Online Library before you can obtain the full text. If you have any queries please visit Wiley Online Library

Summary The sensitivity of the Nicotiana plumbaginifolia wild‐type and phytochrome B (hlg) mutant to photoperiod was investigated. Leaf number at bolting and rosette‐leaf movement were measured under conditions of different light quality and photoperiod. Bolting in wild‐type plants was slightly delayed under short days (SD), compared to plants grown under long days (LD). The hlg mutant bolted later than the wild‐type under LD, but not under SD. An endogenous rhythm of rosette‐leaf movement in the wild‐type was present under SD, but suppressed under LD. The hlg mutant behaved indistinguishably from the wild‐type under SD conditions, but the movements were not suppressed under LD in the mutants. The endogenous rhythm appeared to be entrained normally in the mutants under all the conditions investigated. It was concluded that the B‐type phytochrome absent in the hlg mutant is required for the measurement of photoperiod duration in N. plumbaginifolia, but is not required for entrainment of the circadian clock.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Short Communication

Affiliations: Department of Biology, University of Leicester, Leicester LE1 7RH, UK

Publication date: July 1, 1998

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more