Locus

Gene product, reference to a literary source

Gene product function

Mutation

Morphological

change

GPA1

α-sub-unit of G-proteins [22]

Signal transmission

Gpa1-3

Suppression of secondary root development

RHD3

α-sub-unit of G-proteins [25]

Signal transmission

Rhd3-1

Wavy fibrillas of epiblema

SLR1, SHY2, MSG1, SHR1

Transcription factor [19] [20]

Gene expression regulation

Slr-1, shy2-2, msg1-1, shr-1

Distortion in root branching

SAR1

Synaptobrevin protein [26]

Implementation of response to the signal

Sar-1

Bulb-like root fibrillas