Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/103211
Title: | A molecular framework for grain number determination in barley |
Author(s): | Huang, Yongyu![]() Kamal, Roop Shanmugaraj, Nandhakumar Rutten, Twan ![]() Thirulogachandar, Venkatasubbu Zhao, Shuangshuang Hoffie, Iris Valerie Olga ![]() Hensel, Goetz Rajaraman, Jeyaraman Tandron Moya, Yudelsy Antonia Hajirezaei, Mohammad-Reza Himmelbach, Axel Poursarebani, Naser Lundqvist, Udda Kumlehn, Jochen ![]() Stein, Nils ![]() Wirén, Nicolaus ![]() Mascher, Martin ![]() Melzer, Michael ![]() Schnurbusch, Thorsten ![]() |
Issue Date: | 2023 |
Type: | Article |
Language: | English |
Abstract: | Flowering plants with indeterminate inflorescences often produce more floral structures than they require. We found that floral primordia initiations in barley (Hordeum vulgare L.) are molecularly decoupled from their maturation into grains. While initiation is dominated by flowering-time genes, floral growth is specified by light signaling, chloroplast, and vascular developmental programs orchestrated by barley CCT MOTIF FAMILY 4 (HvCMF4), which is expressed in the inflorescence vasculature. Consequently, mutations in HvCMF4 increase primordia death and pollination failure, mainly through reducing rachis greening and limiting plastidial energy supply to developing heterotrophic floral tissues. We propose that HvCMF4 is a sensory factor for light that acts in connection with the vascular-localized circadian clock to coordinate floral initiation and survival. Notably, stacking beneficial alleles for both primordia number and survival provides positive implications on grain production. Our findings provide insights into the molecular underpinnings of grain number determination in cereal crops. |
URI: | https://opendata.uni-halle.de//handle/1981185920/105163 http://dx.doi.org/10.25673/103211 |
Open Access: | ![]() |
License: | ![]() |
Journal Title: | Science advances |
Publisher: | Assoc. |
Publisher Place: | Washington, DC [u.a.] |
Volume: | 9 |
Issue: | 9 |
Original Publication: | 10.1126/sciadv.add0324 |
Appears in Collections: | Open Access Publikationen der MLU |
Files in This Item:
File | Description | Size | Format | |
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sciadv.add0324.pdf | 1.67 MB | Adobe PDF | ![]() View/Open |