Unlabelled: Doubled haploid (DH) breeding is a powerful technique to ensure global food security via accelerated crop improvement. DH can be produced by employing haploid inducer stock (HIS). Widely used HIS in maize is known to be governed by , , and genes. To develop such HIS in rice and wheat, we have identified putative orthologs of these genes using in silico approaches. The ; , and ; were identified as putative orthologs of and in rice and wheat, respectively. Despite being closely related to , and have shown higher anther-specific expression. Similarly, and were found closely related to the based on both phylogenetic and expression analysis. However, unlike and two orthologs have been found for each crop. and in rice and and in wheat have shown similarity to in terms of both sequence and expression pattern. Furthermore, analogs to maize DMP proteins, these genes possess four transmembrane helices making them best suited to be regarded as orthologs. Modifying these predicted orthologous genes by CRISPR/Cas9-based genome editing can produce a highly efficient HIS in both rice and wheat. Besides revealing the genetic mechanism of haploid induction, the development of HIS would advance the genetic improvement of these crops.
Supplementary Information: The online version contains supplementary material available at 10.1007/s13205-023-03857-9.
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http://dx.doi.org/10.1007/s13205-023-03857-9 | DOI Listing |
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Jiangsu Key Laboratory of Crop Genetics and Physiology/ State Key Laboratory of Hybrid Rice, College of Agriculture, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/ Key Laboratory of Plant Functional Genomics, Ministry of Education/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China; Center for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD 4072, Australia. Electronic address:
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