RRC ID 64911
Author Melonek J, Duarte J, Martin J, Beuf L, Murigneux A, Varenne P, Comadran J, Specel S, Levadoux S, Bernath-Levin K, Torney F, Pichon JP, Perez P, Small I.
Title The genetic basis of cytoplasmic male sterility and fertility restoration in wheat.
Journal Nat Commun
Abstract Hybrid wheat varieties give higher yields than conventional lines but are difficult to produce due to a lack of effective control of male fertility in breeding lines. One promising system involves the Rf1 and Rf3 genes that restore fertility of wheat plants carrying Triticum timopheevii-type cytoplasmic male sterility (T-CMS). Here, by genetic mapping and comparative sequence analyses, we identify Rf1 and Rf3 candidates that can restore normal pollen production in transgenic wheat plants carrying T-CMS. We show that Rf1 and Rf3 bind to the mitochondrial orf279 transcript and induce cleavage, preventing expression of the CMS trait. The identification of restorer genes in wheat is an important step towards the development of hybrid wheat varieties based on a CMS-Rf system. The characterisation of their mode of action brings insights into the molecular basis of CMS and fertility restoration in plants.
Volume 12(1)
Pages 1036
Published 2021-2-15
DOI 10.1038/s41467-021-21225-0
PII 10.1038/s41467-021-21225-0
PMID 33589621
PMC PMC7884431
MeSH Base Sequence Chromosome Mapping Chromosomes, Plant / chemistry* Cytoplasm / genetics Cytoplasm / metabolism Genes, Mitochondrial* Genes, Plant* Plant Breeding / methods Plant Cells / chemistry Plant Cells / metabolism Plant Infertility / genetics* Plants, Genetically Modified Pollen / genetics Pollen / metabolism RNA, Messenger / genetics* RNA, Messenger / metabolism Triticum / genetics* Triticum / metabolism
IF 12.121