Evolutionary history of two pollen self‐incompatibility factors reveals alternate routes to self‐compatibility within <i>Solanum</i>

Markova, Dragomira N.; Petersen, Jennifer J.; Yam, Sarah E.; Corral, Adryanna; Valle, Matthew J.; Li, Wentao; Chetelat, Roger T.

doi:10.3732/ajb.1700196

Cited by 17 publications

(38 citation statements)

References 75 publications

(162 reference statements)

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“…Moreover, in selfers, relaxation of pollen competition and gametic sexual conflict, along with adaptation towards coinciding fitness interests of pollen and ovule, are hypothesised to explain the so‐called ‘SIxSC rule’ of hybrid incompatibility in plants in which pistils of selfers, but not self‐incompatible species, are receptive to heterospecific pollen (Brandvain & Haig, ; Mazer et al ., ). The recognition of nonself alleles depends on S‐RNase activity in pistils that can be inactivated by pollen‐produced Cullin protein complexes (Kubo et al ., , ; Markova et al ., ). Nevertheless, postzygotic reproductive isolation can be strong despite these patterns of pollen receptivity that might otherwise suggest sensitivity to ‘extinction by fusion’ (Seehausen et al ., ; Gilman & Behm, ; Cutter & Gray, ).…”

Section: Reproductive Isolation and The Evolution Of Reproductive Modementioning

confidence: 97%

Reproductive transitions in plants and animals: selfing syndrome, sexual selection and speciation

Cutter

2019

New Phytologist

109

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The evolution of predominant self-fertilisation frequently coincides with the evolution of a collection of phenotypes that comprise the 'selfing syndrome', in both plants and animals. Genomic features also display a selfing syndrome. Selfing syndrome traits often involve changes to male and female reproductive characters that were subject to sexual selection and sexual conflict in the obligatorily outcrossing ancestor, including the gametic phase for both plants and animals. Rapid evolution of reproductive traits, due to both relaxed selection and directional selection under the new status of predominant selfing, lays the genetic groundwork for reproductive isolation. Consequently, shifts in sexual selection pressures coupled to transitions to selfing provide a powerful paradigm for investigating the speciation process. Plant and animal studies, however, emphasise distinct selective forces influencing reproductive-mode transitions: genetic transmission advantage to selfing or reproductive assurance outweighing the costs of inbreeding depression vs the costs of males and meiosis. Here, I synthesise links between sexual selection, evolution of selfing and speciation, with particular focus on identifying commonalities and differences between plant and animal systems and pointing to areas warranting further synergy.

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Section: Reproductive Isolation and The Evolution Of Reproductive Modementioning

confidence: 97%

Reproductive transitions in plants and animals: selfing syndrome, sexual selection and speciation

Cutter

2019

New Phytologist

109

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“…One of the chromosome 1 UI loci maps near the S-locus region, which is associated with a pistil UI QTL in S. habrochaites (Bernacchi and Tanksley, 1997). Like S. habrochaites, S. sitiens is self-incompatible and expresses active S-RNases in the pistil (Markova et al, 2017). An S-RNase pseudogene in S. lycopersicum (Soly-c01g055200) is located at 30 cM on the EXPEN 2012 genetic map, or roughly 51.7 Mbp on the physical map (SL2.5, https://solgenomics.net).…”

Section: Unilateral Incompatibility Locimentioning

confidence: 99%

Introgression lines of Solanum sitiens, a wild nightshade of the Atacama Desert, in the genome of cultivated tomato

et al. 2019

Self Cite

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Summary The wild tomato relative Solanum sitiens is a xerophyte endemic to the Atacama Desert of Chile and a potential source of genes for tolerance to drought, salinity and low‐temperature stresses. However, until recently, strong breeding barriers prevented its hybridization and introgression with cultivated tomato, Solanum lycopersicum L. We overcame these barriers using embryo rescue, bridging lines and allopolyploid hybrids, and synthesized a library of introgression lines (ILs) that captures the genome of S. sitiens in the background of cultivated tomato. The IL library consists of 56 overlapping introgressions that together represent about 93% of the S. sitiens genome: 65% in homozygous and 28% in heterozygous (segregating) ILs. The breakpoints of each segment and the gaps in genome coverage were mapped by single nucleotide polymorphism (SNP) genotyping using the SolCAP SNP array. Marker‐assisted selection was used to backcross selected introgressions into tomato, to recover a uniform genetic background, to isolate recombinant sub‐lines with shorter introgressions and to select homozygous genotypes. Each IL contains a single S. sitiens chromosome segment, defined by markers, in the genetic background of cv. NC 84173, a fresh market inbred line. Large differences were observed between the lines for both qualitative and quantitative morphological traits, suggesting that the ILs contain highly divergent allelic variation. Several loci contributing to unilateral incompatibility or hybrid necrosis were mapped with the lines. This IL population will facilitate studies of the S. sitiens genome and expands the range of genetic variation available for tomato breeding and research.

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“…Кроме того, эволюционные процессы данного семейства многократно формировали такой сложный феномен, как самонесовместимость -редкий пример межвидового отбора, когда невозможность самоопыления исключает инбредную депрессию вида. (Markova et al, 2017). Особенностью метаболизма пасленовых является синтез алкалоидов и стероидных соединений, несвойственных большинству растений.…”

Section: особенности эволюции геномов семейства пасленовыхunclassified

An Integrated Approach to Creating Scab-Resistant Apple: Phytopathological Testing and Marker-Assisted Selection

Супрун¹,

Насонов²,

Lоbodina³

et al. 2018

PBT&B

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Evolutionary history of two pollen self‐incompatibility factors reveals alternate routes to self‐compatibility within Solanum

Cited by 17 publications

References 75 publications

Reproductive transitions in plants and animals: selfing syndrome, sexual selection and speciation

Reproductive transitions in plants and animals: selfing syndrome, sexual selection and speciation

Introgression lines of Solanum sitiens, a wild nightshade of the Atacama Desert, in the genome of cultivated tomato

An Integrated Approach to Creating Scab-Resistant Apple: Phytopathological Testing and Marker-Assisted Selection

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