Genome-wide survey of potato MADS-box genes reveals that StMADS1 and StMADS13 are putative downstream targets of tuberigen StSP6A

• DOI: 10.1186/s12864-018-5113-z
• Publication Date: 2018-10-03T14:04:34Z
• Authors: Huhu Gao; Ziming Wang; Silu Li; Menglu Hou; Yao Zhou; Yaqi Zhao; Guojun Li; Hua Zhao; Haoli Ma
• Keywords: MADS-box

MADS-box genes encode transcription factors that are known to be involved in several aspects of plant growth and development, especially floral organ specification. To date, the comprehensive analysis potato gene family is still lacking after completion genome sequencing. A genome-wide characterization, classification, expression factor was performed this study. total 153 were identified categorized into MIKC subfamily (MIKCC MIKC*) M-type (Mα, Mβ, Mγ) based on their phylogenetic relationships Arabidopsis rice genes. The had 114 members, which almost three times members (39), indicating have a higher duplication rate and/or lower loss during evolution. Potato present all 12 chromosomes with substantial clustering mainly contributed by members. Chromosomal localization revealed genes, mostly MIKC, located duplicated segments whereas tandem duplications expansion. could further classified 11 subgroups TT16-like, AGL17-like, FLC-like found absent potato. Moreover, expressions various tissues analyzed using RNA-seq data verified quantitative real-time PCR, revealing MIKCC expressed flower organs them highly stolon tubers. StMADS1 StMADS13 up-regulated StSP6A-overexpression plants down-regulated StSP6A-RNAi plant, leaves young tubers associated high level StSP6A. Our study identifies investigate evolution history functional divergence family. we analyze patterns screen for tuberization. Finally, most likely downstream target StSP6A tuber development.