Strigolactone synthesis is ancestral in land plants, but canonical strigolactone signalling is a flowering plant innovation.

ABSTRACT:

Background

Strigolactones (SLs) are an important class of carotenoid-derived signalling molecule in plants, which function both as exogenous signals in the rhizosphere and as endogenous plant hormones. In flowering plants, SLs are synthesized by a core pathway of four enzymes and are perceived by the DWARF14 (D14) receptor, leading to degradation of SMAX1-LIKE7 (SMXL7) target proteins in a manner dependent on the SCF^MAX2 ubiquitin ligase. The evolutionary history of SLs is poorly understood, and it is not clear whether SL synthesis and signalling are present in all land plant lineages, nor when these traits evolved.

Results

We have utilized recently-generated genomic and transcriptomic sequences from across the land plant clade to resolve the origin of each known

SUBMITTER: Walker CH 

PROVIDER: S-EPMC6728956 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature