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  Chlorosis caused by two recessively interacting genes reveals a role of RNA helicase in hybrid breakdown in Arabidopsis thaliana

Ploetner, B., Nurmi, M., Fischer, A., Watanabe, M., Schneeberger, K., Holm, S., et al. (2017). Chlorosis caused by two recessively interacting genes reveals a role of RNA helicase in hybrid breakdown in Arabidopsis thaliana. PLANT JOURNAL, 91(2), 251-262. doi:10.1111/tpj.13560.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-04EB-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-04EC-0
Genre: Journal Article

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https://onlinelibrary.wiley.com/doi/abs/10.1111/tpj.13560 (Abstract)
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 Creators:
Ploetner, Bjoern1, Author
Nurmi, Markus1, Author
Fischer, Axel1, Author
Watanabe, Mutsumi1, Author
Schneeberger, Korbinian2, Author
Holm, Svante3, Author
Vaid, Neha1, Author
Schoettler, Mark Aurel1, Author
Walther, Dirk1, Author
Hoefgen, Rainer1, Author
Weigel, Detlef4, Author
Laitinen, Roosa A. E.1, Author
Affiliations:
1Max Planck Institute of Molecular Plant Physiology, Max Planck Society, Am Mühlenberg 1, 14476 Potsdam-Golm, DE, ou_1753296              
2MPI for Plant Breeding Research, Max Planck Society, Carl-von-Linné-Weg 10, 50829 Cologne, DE, ou_67205              
3Mid Sweden University, Sundsvall, ou_persistent22              
4Max Planck Institute for Developmental Biology, Max Planck Society, Max-Planck-Ring 5, 72076 Tübingen, DE, ou_2421691              

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Free keywords: DEAD-BOX PROTEIN; CHLOROPLAST DEVELOPMENT; RIBOSOMAL-RNA; SHORT READS; FAMILY; BIOGENESIS; RICE; INCOMPATIBILITY; EVOLUTION; GROWTHP; chlorosis; hybrid breakdown; RNA helicase; Arabidopsis thaliana; local adaptation;
 Abstract: Hybrids often differ in fitness from their parents. They may be superior, translating into hybrid vigour or heterosis, but they may also be markedly inferior, because of hybrid weakness or incompatibility. The underlying genetic causes for the latter can often be traced back to genes that evolve rapidly because of sexual or host-pathogen conflicts. Hybrid weakness may manifest itself only in later generations, in a phenomenon called hybrid breakdown. We have characterized a case of hybrid breakdown among two Arabidopsis thaliana accessions, Shahdara (Sha, Tajikistan) and Lovvik-5 (Lov-5, Northern Sweden). In addition to chlorosis, a fraction of the F-2 plants have defects in leaf and embryo development, and reduced photosynthetic efficiency. Hybrid chlorosis is due to two major-effect loci, of which one, originating from Lov-5, appears to encode an RNA helicase (AtRH18). To examine the role of the chlorosis allele in the Lovvik area, in addition to eight accessions collected in 2009, we collected another 240 accessions from 15 collections sites, including Lovvik, from Northern Sweden in 2015. Genotyping revealed that Lovvik collection site is separated from the rest. Crosses between 109 accessions from this area and Sha revealed 85 cases of hybrid chlorosis, indicating that the chlorosis-causing allele is common in this area. These results suggest that hybrid breakdown alleles not only occur at rapidly evolving loci, but also at genes that code for conserved processes. Significance Statement AtRH18 was found to play a role in F-2 hybrid chlorosis associated with reduced photosynthetic efficiency and defects in embryo and early leaf development. This study adds to our understanding of different mechanisms and origins behind hybrid breakdown in plants.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: 12
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000404795500006
DOI: 10.1111/tpj.13560
 Degree: -

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Title: PLANT JOURNAL
Source Genre: Journal
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Publ. Info: 111 RIVER ST, HOBOKEN 07030-5774, NJ USA : WILEY
Pages: - Volume / Issue: 91 (2) Sequence Number: - Start / End Page: 251 - 262 Identifier: ISSN: 0960-7412