Regulation of monocot and dicot plant development with constitutively active alleles of phytochrome B.

ABSTRACT: The constitutively active missense allele of Arabidopsis phytochrome B, AtPHYB^Y276H or AtYHB, encodes a polypeptide that adopts a light-insensitive, physiologically active conformation capable of sustaining photomorphogenesis in darkness. Here, we show that the orthologous OsYHB allele of rice phytochrome B (OsPHYB^Y283H ) also encodes a dominant "constitutively active" photoreceptor through comparative phenotypic analyses of AtYHB and OsYHB transgenic lines of four eudicot species, Arabidopsis thaliana, Nicotiana tabacum (tobacco), Nicotiana sylvestris and Solanum lycopersicum cv. MicroTom (tomato), and of two monocot species, Oryza sativa ssp. japonica and Brachypodium distachyon. Rec

SUBMITTER: Hu W 

PROVIDER: S-EPMC7184922 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature