Journal
PLANT PHYSIOLOGY
Volume 174, Issue 3, Pages 1931-1948Publisher
AMER SOC PLANT BIOLOGISTS
DOI: 10.1104/pp.17.00445
Keywords
-
Categories
Funding
- National Key Research and Development Program of China [2016YFD0100302]
- Ministry of Agriculture of China [2016ZX08009003-003]
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)
- Agricultural Science and Technology Innovation Program of CAAS
- Youth Talent Plan of CAAS
Ask authors/readers for more resources
Genetic and environmental factors affect bread wheat (Triticum aestivum) plant architecture, which determines grain yield. In this study, we demonstrate that miR156 controls bread wheat plant architecture. We show that overexpression of tae-miR156 in bread wheat cultivar Kenong199 leads to increased tiller number and severe defects in spikelet formation, probably due to the tae-miR156-mediated repression of a group of SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) genes. Furthermore, we found that the expression of two genes TEOSINTE BRANCHED1 (TaTB1) and BARREN STALK1 (TaBA1), whose orthologous genes in diverse plant species play conserved roles in regulating plant architecture, is markedly reduced in the tae-miR156-OE bread wheat plants. Significantly, we demonstrate that the strigolactone (SL) signaling repressor DWARF53 (TaD53), which physically associates with the transcriptional corepressor TOPLESS, can directly interact with the N-terminal domains of miR156-controlled TaSPL3/ 17. Most importantly, TaSPL3/ 17-mediated transcriptional activation of TaBA1 and TaTB1 can be largely repressed by TaD53 in the transient expression system. Our results reveal potential association between miR156-TaSPLs and SL signaling pathways during bread wheat tillering and spikelet development.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available