Abstract:
:Hypocotyls of dark-grown seedlings of Arabidosis thaliana exhibit a strong negative gravitropism, which is reduced by red and also by long-wavelength, far-red light treatments. Light treatments using phytochrome A (phyA)- and phytochrome B (phyB)-deficient mutants showed that this response is controlled by phyB in a red/far-red reversible way, and by phyA in a non-reversible, very-low-fluence response. Crosses of the previously analyzed phyB-1 allele (in the ecotype Landsberg erecta background) to the ecotype Nossen wild-type (WT) background resulted in a WT-like negative gravitropism in darkness, indicating that the previously described gravitropic randomization observed with phyB-1 in the dark is likely due to a second mutation independent of that in the PHYB gene.
journal_name
Plantajournal_title
Plantaauthors
Poppe C,Hangarter RP,Sharrock RA,Nagy F,Schäfer Edoi
10.1007/BF00195180subject
Has Abstractpub_date
1996-01-01 00:00:00pages
511-4issue
4eissn
0032-0935issn
1432-2048journal_volume
199pub_type
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