Discovery and characterisation of a new leaf rust resistance gene introgressed in wheat from wild wheat Aegilops peregrina

Wild wheat species Aegilops peregrina (UpUpSpSp), harbours resistance to various diseases including leaf rust and stripe rust. Inheritance studies in a recombinant inbred line population of wheat-Ae. peregrina introgression line IL pau16061 revealed the transfer of a single major dominant gene conditioning all stage resistance, herein temporarily designated as LrAp. Genomic in situ hybridisation of IL pau16061, resistant and susceptible RILs with U- and S-genome DNA probes confirmed that the introgression with leaf rust resistance is from the Up genome of Ae. peregrina. Fluorescence in situ hybridisation using chromosome specific probes identified Up genome introgression to be on the long arm of wheat chromosome 6B. To genetically map LrAp, bulked segregant analysis was combined with resistance gene enrichment sequencing (MapRenSeq). Five nucleotide binding leucine-rich repeat contigs distinguished resistant and susceptible bulks and single nucleotide polymorphism (SNP) markers from these contigs co-segregated with LrAp. All five RenSeq NB_ARC contigs showed identity with the long arm of wheat chromosome 6B confirming the introgression on 6BL which we propose is a compensating translocation from Ae. peregrina chromosome 6UpL due to homoeology between the alien and wheat chromosomes. The SNP markers developed in this study will aid in cloning and marker assisted gene pyramiding of LrAp.

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PRJNA510007
Raw sequence of Introgression line (IL pau16061) derived from Aegilops peregrina
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PRJNA490616
Triticum aestivum Raw sequence reads
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PRJNA510282
Raw sequence reads of (WL711 X IL pau16061) Resistant bulk
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Raw sequence reads of (WL711 X IL pau16061) susceptible bulk
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Authors	Name: Narang, Deepika, Type: Corresponding Author, Name: Kaur, Satinder, Type: 作者, Name: Steuernagel, Burkhard, Type: 作者, Name: Ghosh, Sreya, Type: 作者, Name: Bansal, Urmil, Type: 作者, Name: Li, Jianbo, Type: 作者, Name: Zhang, Peng, Type: 作者, Name: Bhardwaj, Subhash, Type: 作者, Name: Uauy, Cristobal, Type: 作者, Name: Wulff, Brande B. H., Type: 作者, Name: Chhuneja, Parveen, Type: 作者,
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Article Host Type	publisher
Article Is Open Access	true
Article License Type	cc-by
Article Version Type	publishedVersion
Citation Report	https://scite.ai/reports/10.1038/s41598-020-64166-2
DFW Organisation	JIC
DFW Work Package	2
DOI	10.1038/s41598-020-64166-2
Date Last Updated	2021-03-04T13:56:07.225036
Evidence	oa journal (via doaj)
Funder Code(s)	Sustainable Crop Production Research for International Development (SCPRID), Crop Genomics and Technologies (CGAT) programmes (Department of Biotechnology, Ministry of Science and Technology, Government of India), Biotechnology and Biological Sciences Research Council (BBSRC) BB/J012017/1, BBS/E/J/000CA572, BB/P016855/1
Journal Is Open Access	true
Open Access Status	gold
PDF URL	https://www.nature.com/articles/s41598-020-64166-2.pdf
Publisher URL	https://doi.org/10.1038/s41598-020-64166-2