Sökning: onr:"swepub:oai:DiVA.org:su-194140" >
On the origin of th...
On the origin of the widespread self-compatible allotetraploid Capsella bursa-pastoris (Brassicaceae)
-
- Bachmann, Jörg A. (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab)
-
- Tedder, Andrew (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab)
-
- Fracassetti, Marco (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab)
-
visa fler...
-
- Steige, Kim A. (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab)
-
- Lafon-Placette, Clément (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
-
- Köhler, Claudia (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
-
- Slotte, Tanja (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Science for Life Laboratory (SciLifeLab)
-
visa färre...
-
(creator_code:org_t)
-
- 2021-04-19
- 2021
- Engelska.
-
Ingår i: Heredity. - : Springer Science and Business Media LLC. - 0018-067X .- 1365-2540. ; 127, s. 124-134
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://www.nature.c...
-
https://pub.epsilon.... (primary) (Raw object) (free)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://res.slu.se/i...
-
visa färre...
Abstract
Ämnesord
Stäng
- Polyploidy, or whole-genome duplication, is a common speciation mechanism in plants. An important barrier to polyploid establishment is a lack of compatible mates. Because self-compatibility alleviates this problem, it has long been hypothesized that there should be an association between polyploidy and self-compatibility (SC), but empirical support for this prediction is mixed. Here, we investigate whether the molecular makeup of the Brassicaceae self-incompatibility (SI) system, and specifically dominance relationships among S-haplotypes mediated by small RNAs, could facilitate loss of SI in allopolyploid crucifers. We focus on the allotetraploid species Capsella bursa-pastoris, which formed similar to 300 kya by hybridization and whole-genome duplication involving progenitors from the lineages of Capsella orientalis and Capsella grandiflora. We conduct targeted long-read sequencing to assemble and analyze eight full-length S-locus haplotypes, representing both homeologous subgenomes of C. bursa-pastoris. We further analyze small RNA (sRNA) sequencing data from flower buds to identify candidate dominance modifiers. We find that C. orientalis-derived S-haplotypes of C. bursa-pastoris harbor truncated versions of the male SI specificity gene SCR and express a conserved sRNA-based candidate dominance modifier with a target in the C. grandiflora-derived S-haplotype. These results suggest that pollen-level dominance may have facilitated loss of SI in C. bursa-pastoris. Finally, we demonstrate that spontaneous somatic tetraploidization after a wide cross between C. orientalis and C. grandiflora can result in production of self-compatible tetraploid offspring. We discuss the implications of this finding on the mode of formation of this widespread weed.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
-
Heredity
(Sök värdpublikationen i LIBRIS)
Till lärosätets databas