Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/108817
Title: COMPOSITUM 1 contributes to the architectural simplification of barley inflorescence via meristem identity signals
Author(s): Poursarebani, Naser
Trautewig, Corinna
Melzer, MichaelLook up in the Integrated Authority File of the German National Library
Nussbaumer, ThomasLook up in the Integrated Authority File of the German National Library
Lundqvist, Udda
Rutten, TwanLook up in the Integrated Authority File of the German National Library
Schmutzer, ThomasLook up in the Integrated Authority File of the German National Library
Brandt, RonnyLook up in the Integrated Authority File of the German National Library
Himmelbach, Axel
Altschmied, Lothar
Koppolu, Ravi
Youssef, Helmy M.
Sibout, Richard
Dalmais, Marion
Bendahmane, Abdelhafid
Stein, NilsLook up in the Integrated Authority File of the German National Library
Xin, Zhanguo
Schnurbusch, ThorstenLook up in the Integrated Authority File of the German National Library
Issue Date: 2020
Type: Article
Language: English
Abstract: Grasses have varying inflorescence shapes; however, little is known about the genetic mechanisms specifying such shapes among tribes. Here, we identify the grass-specific TCP transcription factor COMPOSITUM 1 (COM1) expressing in inflorescence meristematic boundaries of different grasses. COM1 specifies branch-inhibition in barley (Triticeae) versus branch-formation in non-Triticeae grasses. Analyses of cell size, cell walls and transcripts reveal barley COM1 regulates cell growth, thereby affecting cell wall properties and signaling specifically in meristematic boundaries to establish identity of adjacent meristems. COM1 acts upstream of the boundary gene Liguleless1 and confers meristem identity partially independent of the COM2 pathway. Furthermore, COM1 is subject to purifying natural selection, thereby contributing to specification of the spike inflorescence shape. This meristem identity pathway has conceptual implications for both inflorescence evolution and molecular breeding in Triticeae.
URI: https://opendata.uni-halle.de//handle/1981185920/110772
http://dx.doi.org/10.25673/108817
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Nature Communications
Publisher: Nature Publishing Group UK
Publisher Place: [London]
Volume: 11
Original Publication: 10.1038/s41467-020-18890-y
Page Start: 1
Page End: 16
Appears in Collections:Open Access Publikationen der MLU

Files in This Item:
File Description SizeFormat 
s41467-020-18890-y.pdf9.98 MBAdobe PDFThumbnail
View/Open