Parallel Evolution of Common Allelic Variants Confers Flowering Diversity in <i>Capsella rubella</i>

Yang, Li; Wang, Hui Na; Hou, Xing Hui; Zeng, Yu; Han, Tao; Xiao, Ning; Zhang, Jie; Zhao, Zhong; Todesco, Marco; Balasubramanian, Sureshkumar; Guo, Ya Long

doi:10.1105/tpc.18.00124

Cited by 27 publications

(36 citation statements)

References 79 publications

(117 reference statements)

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“…Consistent with these patterns, seven additional FLC alleles that have sustained independent TE insertions are associated with reduced gene expression and earlier flowering (Lempe et al , ; Quadrana et al , ). Furthermore, natural variants that eliminate, attenuate, or otherwise alter the functions of FRI , FLC , and CO homologs have been implicated in the adaptive evolution of seasonal flowering in three other species (Yang et al , ; Baduel et al , ; Lee et al , ) and between species (Kiefer et al , ) in another genus in the Brassicaceae.…”

Section: Adaptationmentioning

confidence: 99%

Evolutionary processes from the perspective of flowering time diversity

Gaudinier

Blackman

2019

New Phytologist

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Summary Although it is well appreciated that genetic studies of flowering time regulation have led to fundamental advances in the fields of molecular and developmental biology, the ways in which genetic studies of flowering time diversity have enriched the field of evolutionary biology have received less attention despite often being equally profound. Because flowering time is a complex, environmentally responsive trait that has critical impacts on plant fitness, crop yield, and reproductive isolation, research into the genetic architecture and molecular basis of its evolution continues to yield novel insights into our understanding of domestication, adaptation, and speciation. For instance, recent studies of flowering time variation have reconstructed how, when, and where polygenic evolution of phenotypic plasticity proceeded from standing variation and de novo mutations; shown how antagonistic pleiotropy and temporally varying selection maintain polymorphisms in natural populations; and provided important case studies of how assortative mating can evolve and facilitate speciation with gene flow. In addition, functional studies have built detailed regulatory networks for this trait in diverse taxa, leading to new knowledge about how and why developmental pathways are rewired and elaborated through evolutionary time.

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Section: Adaptationmentioning

confidence: 99%

Evolutionary processes from the perspective of flowering time diversity

Gaudinier

Blackman

2019

New Phytologist

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“…For example, species from four orders of insects, spanning 300 million years of divergence, have independently evolved tolerance to toxic compounds in milkweed and dogbane plant species [3,4]. Likewise, reduction-of-function alleles at the FLC focus have evolved multiple times independently in Capsella rubella populations, conferring variation in flowering time [5]. Pool et al [6] investigated cold adaptation across three pairs of highland and lowland Drosophila melanogaster populations, finding strong evidence for alleles that were repeatedly selected during highland colonization.…”

Section: Introductionmentioning

confidence: 99%

Molecular Parallelism Underlies Convergent Highland Adaptation of Maize Landraces

Wang

Josephs

Lee

et al. 2020

Preprint

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Convergent phenotypic evolution provides some of the strongest evidence for adaptation. However, the extent to which recurrent phenotypic adaptation has arisen via parallelism at the molecular level remains unresolved, as does the evolutionary origin of alleles underlying such adaptation. Here, we investigate genetic mechanisms of convergent highland adaptation in maize landrace populations and evaluate the genetic sources of recurrently selected alleles. Population branch excess statistics reveal strong evidence of parallel adaptation at the level of individual SNPs, genes and pathways in four independent highland maize populations, even though most SNPs show unique patterns of local adaptation. The majority of selected SNPs originated via migration from a single population, most likely in the Mesoamerican highlands. Polygenic adaptation analyses of quantitative traits reveal that alleles affecting flowering time are significantly associated with elevation, indicating the flowering time pathway was targeted by highland adaptation. In addition, repeatedly selected genes were significantly enriched in the flowering time pathway, indicating their significance in adapting to highland conditions. Overall, our study system represents a promising model to study convergent evolution in plants with potential applications to crop adaptation across environmental gradients.

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“…The FLC gene constitutes one example. In addition to BsFLC1 in B. stricta , independent mutations in FLC homologs cause heritable variation in vernalization requirement of flowering time in other Brassicaceae species ( Alonso-Blanco and Méndez-Vigo, 2014 ) such as A. thaliana ( Michaels et al, 2003 ; Lempe et al, 2005 ; Shindo et al, 2005 ; Werner et al, 2005 ; Méndez-Vigo et al, 2011 ), Arabidopsis lyrata ( Kemi et al, 2013 ), Arabis alpina ( Wang et al, 2009 ; Albani et al, 2012 ), Capsella rubella ( Guo et al, 2012 ; Yang et al, 2018 ), Brassica napus ( Tadege et al, 2001 ), Brassica oleracea ( Okazaki et al, 2007 ), and Brassica rapa ( Schranz et al, 2002 ). Recently, ODDSOC2 , the FLC / MAF ortholog in monocots, was also shown to be associated with the vernalization requirement of flowering in Brachypodium distachyon ( Sharma et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

The Functional Change and Deletion of FLC Homologs Contribute to the Evolution of Rapid Flowering in Boechera stricta

et al. 2018

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Differences in the timing of vegetative-to-reproductive phase transition have evolved independently and repeatedly in different plant species. Due to their specific biological functions and positions in pathways, some genes are important targets of repeated evolution – independent mutations on these genes caused the evolution of similar phenotypes in distantly related organisms. While many studies have investigated these genes, it remains unclear how gene duplications influence repeated phenotypic evolution. Here we characterized the genetic architecture underlying a novel rapid-flowering phenotype in Boechera stricta and investigated the candidate genes BsFLC1 and BsFLC2. The expression patterns of BsFLC1 suggested its function in flowering time suppression, and the deletion of BsFLC1 is associated with rapid flowering and loss of vernalization requirement. In contrast, BsFLC2 did not appear to be associated with flowering and had accumulated multiple amino acid substitutions in the relatively short evolutionary timeframe after gene duplication. These non-synonymous substitutions greatly changed the physicochemical properties of the original amino acids, concentrated non-randomly near a protein-interacting domain, and had greater substitution rate than synonymous changes. Here we suggested that, after recent gene duplication of the FLC gene, the evolution of rapid phenology was made possible by the change of BsFLC2 expression pattern or protein sequences and the deletion of BsFLC1.

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Parallel Evolution of Common Allelic Variants Confers Flowering Diversity in Capsella rubella

Cited by 27 publications

References 79 publications

Evolutionary processes from the perspective of flowering time diversity

Evolutionary processes from the perspective of flowering time diversity

Molecular Parallelism Underlies Convergent Highland Adaptation of Maize Landraces

The Functional Change and Deletion of FLC Homologs Contribute to the Evolution of Rapid Flowering in Boechera stricta

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