Cabbage family affairs: the evolutionary history of Brassicaceae

Franzke, Andreas; Lysak, Martin A.; Al‐Shehbaz, Ihsan A.; Koch, Marcus A.; Mummenhoff, Klaus

doi:10.1016/j.tplants.2010.11.005

Cited by 351 publications

(384 citation statements)

References 94 publications

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“…disruptions in vesicle secretion and signs of autophagy as predicted from our previous work (Samuel et al, 2009;Safavian and Goring, 2013). Thus, despite the divergence of the Brassica species ;20 to 40 million years ago from the Arabidopsis species (Franzke et al, 2011), our study shows that SCR-SRK-ARC1 signaling is conserved at the cellular level (Figure 10).…”

Section: Discussionsupporting

confidence: 78%

The ARC1 E3 Ligase Promotes Two Different Self-Pollen Avoidance Traits inArabidopsis

2014

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Flowering plants have evolved various strategies for avoiding self-pollen to drive genetic diversity. These strategies include spatially separated sexual organs (herkogamy), timing differences between male pollen release and female pistil receptivity (dichogamy), and self-pollen rejection. Within the Brassicaceae, these outcrossing systems are the evolutionary default state, and many species display these traits, including Arabidopsis lyrata. In contrast to A. lyrata, closely related Arabidopsis thaliana has lost these self-pollen traits and thus represents an excellent system to test genes for reconstructing these evolutionary traits. We previously demonstrated that the ARC1 E3 ligase is required for self-incompatibility in two diverse Brassicaceae species, Brassica napus and A. lyrata, and is frequently deleted in self-compatible species, including A. thaliana. In this study, we examined ARC1's requirement for reconstituting self-incompatibility in A. thaliana and uncovered an important role for ARC1 in promoting a strong and stable pollen rejection response when expressed with two other A. lyrata self-incompatibility factors. Furthermore, we discovered that ARC1 promoted an approach herkogamous phenotype in A. thaliana flowers. Thus, ARC1's expression resulted in two different A. lyrata traits for self-pollen avoidance and highlights the key role that ARC1 plays in the evolution and retention of outcrossing systems.

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Section: Discussionsupporting

confidence: 78%

The ARC1 E3 Ligase Promotes Two Different Self-Pollen Avoidance Traits inArabidopsis

2014

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“…It is tempting to speculate that in L. papillosum, the two LepaDOG1a and LepaDOG1c proteins provide functional roles in dormancy regulation that are fulfilled by different splice variants of the single AtDOG1 gene (Bentsink et al, 2006;Nakabayashi et al, 2012) in the shrunken genome of Arabidopsis, which is characterized by extensive gene loss (Thomas et al, 2006;Oyama et al, 2008). Furthermore, polyploidization can form the basis for neofunctionalization or subfunctionalization of multiplied and retained genes (homeologs; Erdmann et al, 2010;Liu and Adams, 2010;Franzke et al, 2011), providing a mechanism for potentially diversified or more complex functions of the individual LepaDOG1 proteins in a putatively conserved dormancy mechanism. As outlined above, we propose that L. papillosum evolved by autopolyploidization or allopolyploidization from the very closely related L. oxytrichum (or its progenitor).…”

Section: Discussion Spatiotemporal Maturation Patterns In L Papillosmentioning

confidence: 99%

“…Germination timing depends largely on seed dormancy mechanisms and is a target for intense natural selection early in the colonization process. In general, genetic variation at individual gene loci, together with singlegene and whole-genome duplication events, are the origin of evolutionary novelties important for angiosperm diversification and adaptation to environmental cues and ecological niches (Tonsor et al, 2005;Franzke et al, 2011;Gossmann and Schmid, 2011;Wang et al, 2011). This has been thoroughly investigated in the case of flowering time but rarely regarding seed dormancy.…”

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confidence: 99%

Spatiotemporal Seed Development Analysis Provides Insight into Primary Dormancy Induction and Evolution of theLepidium DELAY OF GERMINATION1Genes

et al. 2013

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Seed dormancy is a block to the completion of germination of an intact viable seed under favorable conditions and is an adaptive and agronomically important trait. Thus, elucidating conserved features of dormancy mechanisms is of great interest. The worldwide-distributed genus Lepidium (Brassicaceae) is well suited for cross-species comparisons investigating the origin of common or specific early-life-history traits. We show here that homologs of the seed dormancy-specific gene DELAY OF GERMINATION1 (DOG1) from Arabidopsis (Arabidopsis thaliana) are widespread in the genus Lepidium. The highly dormant Lepidium papillosum is a polyploid species and possesses multiple structurally diversified DOG1 genes (LepaDOG1), some being expressed in seeds. We used the largely elongated and well-structured infructescence of L. papillosum for studying primary dormancy induction during seed development and maturation with high temporal resolution. Using simultaneous germination assays and marker protein expression detection, we show that LepaDOG1 proteins are expressed in seeds during maturation prior to dormancy induction. Accumulation of LepaDOG1 takes place in seeds that gain premature germinability before and during the seed-filling stage and declines during the late maturation and desiccation phase when dormancy is induced. These analyses of the Lepidium DOG1 genes and their protein expression patterns highlight similarities and species-specific differences of primary dormancy induction mechanism(s) in the Brassicaceae.

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“…For example, all angiosperms share the remnants of at least two rounds of ancient polyploidy (Jiao et al, 2011;Amborella Genome Project, 2013), and nearly 15% of angiosperm speciation events are estimated to be caused by polyploidization (Wood et al, 2009). Recurrent polyploidization has played a significant role in the evolution of the Brassicaceae , and nearly half of the crucifer taxa are hypothesized to be of recent polyploid origin (Franzke et al, 2011). The genome of A. thaliana revealed compelling evidence for remnants of at least three paleopolyploidy events, known as a, b, and g WGDs (Bowers et al, 2003), that are shared by all crucifer taxa (Haudry et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Polyploid Evolution of the Brassicaceae during the Cenozoic Era

et al. 2014

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The Brassicaceae (Cruciferae) family, owing to its remarkable species, genetic, and physiological diversity as well as its significant economic potential, has become a model for polyploidy and evolutionary studies. Utilizing extensive transcriptome pyrosequencing of diverse taxa, we established a resolved phylogeny of a subset of crucifer species. We elucidated the frequency, age, and phylogenetic position of polyploidy and lineage separation events that have marked the evolutionary history of the Brassicaceae. Besides the well-known ancient a (47 million years ago [Mya]) and b (124 Mya) paleopolyploidy events, several species were shown to have undergone a further more recent (;7 to 12 Mya) round of genome multiplication. We identified eight whole-genome duplications corresponding to at least five independent neo/mesopolyploidy events. Although the Brassicaceae family evolved from other eudicots at the beginning of the Cenozoic era of the Earth (60 Mya), major diversification occurred only during the Neogene period (0 to 23 Mya). Remarkably, the widespread species divergence, major polyploidy, and lineage separation events during Brassicaceae evolution are clustered in time around epoch transitions characterized by prolonged unstable climatic conditions. The synchronized diversification of Brassicaceae species suggests that polyploid events may have conferred higher adaptability and increased tolerance toward the drastically changing global environment, thus facilitating species radiation.

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Cabbage family affairs: the evolutionary history of Brassicaceae

Cited by 351 publications

References 94 publications

The ARC1 E3 Ligase Promotes Two Different Self-Pollen Avoidance Traits inArabidopsis

The ARC1 E3 Ligase Promotes Two Different Self-Pollen Avoidance Traits inArabidopsis

Spatiotemporal Seed Development Analysis Provides Insight into Primary Dormancy Induction and Evolution of theLepidium DELAY OF GERMINATION1Genes

Polyploid Evolution of the Brassicaceae during the Cenozoic Era

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