The Effect of Leaf Number-altered Mutants in Arabidopsis thaliana
? These authors contributed equally to this paper
Received date: 2014-04-02
Accepted date: 2014-05-19
Online published: 2015-04-08
The vegetative growth of Arabidopsis thaliana includes a juvenile phase and an adult phase. The transition from the juvenile phase to the adult phase (vegetative phase change, VPC) is associated with changes in several morphological features of leaves, the shape of the shoot apical meristem, the onset of abaxial trichome and the expression of transcription factors like squamosa promoter-binding protein-like family. Recently, signals that promote VPC were found to be derived from leaf primordium. To explore the effect of leaf number on VPC, we analyzed the VPC processes with two types of rosette leaf-altered mutants and defoliated wild-type plants. We found that decreasing number of rosette leaves delayed vegetative phase change. However, the amp1-1 mutant, with increased number of rosette leaves, does not promote VPC. We proposed that photosynthesis may affect the transition of the leaf-derived signals, regulating VPC.
Yang Lu, Hong Long . The Effect of Leaf Number-altered Mutants in Arabidopsis thaliana[J]. Chinese Bulletin of Botany, 2015 , 50(3) : 331 -336 . DOI: 10.3724/SP.J.1259.2015.00331
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