Analysis of Physcomitrella Phytochrome Mutants via Phototropism and Polarotropism.
Phototropism
Physcomitrella patens
Physiology
Phytochrome mutants
Polarotropism
Journal
Methods in molecular biology (Clifton, N.J.)
ISSN: 1940-6029
Titre abrégé: Methods Mol Biol
Pays: United States
ID NLM: 9214969
Informations de publication
Date de publication:
2019
2019
Historique:
entrez:
19
7
2019
pubmed:
19
7
2019
medline:
31
3
2020
Statut:
ppublish
Résumé
In mosses such as Physcomitrella patens phytochrome photoreceptors steer directional/vectorial responses to unilateral/polarized light. In this chapter, we describe procedures to assay phototropism and polarotropism quantitatively in wild type and mutant lines. Protonemata are placed on agar-based medium in square Petri dishes in darkness for 1 week, allowing caulonemata to develop and grow negatively gravitropically. For phototropism, the dishes are placed vertically in black boxes and unilaterally irradiated with continuous red light. For polarotropism, Petri dishes are placed horizontally and irradiated with linearly polarized red light from above. After irradiation, the filaments are photographed using a macroscope with CCD camera and the bending angles measured using image processing software. The data are transfered to a spreadsheet program, placed into 10° bending angle classes and illustrated using a circular histogram.
Identifiants
pubmed: 31317417
doi: 10.1007/978-1-4939-9612-4_19
doi:
Substances chimiques
Phytochrome
11121-56-5
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
225-236Références
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