A two-locus interaction causes interspecific hybrid weakness in rice

Chen Chen, Hao Chen, You-Shun Lin, Jin-Bo Shen, Jun-Xiang Shan, Peng Qi, Min Shi, Mei-Zhen Zhu, Xue-Hui Huang, Qi Feng, Bin Han, Liwen Jiang, Ji-Ping Gao () and Hong-Xuan Lin ()
Additional contact information
Chen Chen: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Hao Chen: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
You-Shun Lin: Centre for Cell and Developmental Biology, School of Life Sciences, Chinese University of Hong Kong, Shatin, New Territories
Jin-Bo Shen: Centre for Cell and Developmental Biology, School of Life Sciences, Chinese University of Hong Kong, Shatin, New Territories
Jun-Xiang Shan: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Peng Qi: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Min Shi: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Mei-Zhen Zhu: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Xue-Hui Huang: National Center for Gene Research, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Qi Feng: National Center for Gene Research, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Bin Han: National Center for Gene Research, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Liwen Jiang: Centre for Cell and Developmental Biology, School of Life Sciences, Chinese University of Hong Kong, Shatin, New Territories
Ji-Ping Gao: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Hong-Xuan Lin: National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences

Nature Communications, 2014, vol. 5, issue 1, 1-11

Abstract: Abstract Reproductive barriers perform a vital role during speciation. Hybrid weakness, the poorer development of hybrids compared with their parents, hinders gene exchange between different species at the postzygotic stage. Here we show that two incompatible dominant loci (Hwi1 and Hwi2) involving three genes are likely to determine the high temperature-dependent expression of hybrid weakness in interspecific hybrids of rice. Hwi1 comprises two leucine-rich repeat receptor-like kinase (LRR–RLK) genes, 25L1 and 25L2, which are specific to wild rice (Oryza rufipogon) and induce hybrid weakness. Hwi2, a rare allele that is predominantly distributed in indica rice (Oryza sativa), encodes a secreted putative subtilisin-like protease. Functional analysis indicated that pyramiding of Hwi1 and Hwi2 activates the autoimmune response in the basal nodes of hybrids, interrupting root formation and then impairing shoot growth. These findings bring new insights into our understanding of reproductive isolation and may benefit rice breeding.

Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms4357 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4357

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms4357

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().