Pascal‐Antoine Christin

Gene turnover in the common ancestor of all C 4 grasses

Lara Pereira, Ahmed S. Alenazi, Sahr Mian, Ilia J. Leitch et autres

Societal Impact Statement Understanding how plants evolve more efficient photosynthesis is important in a warming world where improving crop productivity and resilience is a global priority. By generating the first reference genomes for an early‐diverging group of grasses called the Aristidoideae, we …

gb, sa (code pays fourni par la source)

Thlaspi caerulescens (Brassicaceae) population genetics in western Switzerland: is the genetic structure affected by natural variation of soil heavy metal concentrations?

Guillaume Besnard, Nevena Basic, Dessislava Savova Bianchi, Nicole Galland et autres

Data : https://www.gbif.org/occurrence/search?dataset_id=https://doi.org/10.15468/bj6vwzhttps://doi.org/10.1111/j.1469-8137.2008.02706.x

ch (code pays fourni par la source)

Regulatory features determine the evolutionary fate of laterally acquired genes in plants

Benjamin J Alston, Samuel G. S. Hibdige, Pauline Raimondeau, Emily Baker et autres

Abstract Lateral gene transfer (LGT) is widespread in eukaryotes, including in animals and plants where it can fuel adaptive evolution and innovation. However, the factors that influence the integration and long-term retention of transferred genes remain poorly understood. The pangenome of the …

gb, us, es (code pays fourni par la source)

Gene turnover and contingency facilitated the repeated evolution of C 4 photosynthesis in grasses

Lara Pereira, Ahmed S. Alenazi, Sahr Mian, Ilia J. Leitch et autres

In grasses, almost all species belong to two evenly sized clades (BOP and PACMAD), yet the >20 independent origins of C4 photosynthesis in this family only occur in the PACMAD lineage. Here, we identify potential genetic precursors for C4 photosynthesis that were …

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Identifying genomic regions associated with C4 photosynthetic activity and leaf anatomy in Alloteropsis semialata

Ahmed S. Alenazi, Lara Pereira, Pascal‐Antoine Christin, Colin P. Osborne et autres

Summary C4 photosynthesis is a complex trait requiring multiple developmental and metabolic alterations. Despite this complexity, it has independently evolved over 60 times. However, our understanding of the transition to C4 is complicated by the fact that variation in photosynthetic type is …

sa, gb (code pays fourni par la source)

Nuclear phylogenomics of grasses (Poaceae) supports current classification and reveals repeated reticulation

Watchara Arthan, William J. Baker, Matthew D. Barrett, Russell L. Barrett et autres

Summary Grasses (Poaceae) comprise around 11,800 species and are central for human livelihoods and terrestrial ecosystems. Knowing their relationships and evolutionary history is key to comparative research and crop breeding. Advances in genome-scale sequencing allow for increased breadth and depth of phylogenomic …

th, dk, gb, au, us, fr, es, cn, no, ca, de, Maroc, gp, ie, se, Tanzanie, Kenya, Madagascar, co, be, br, ar (code pays fourni par la source)

Phylogenomics and the rise of the angiosperms

Alexandre R. Zuntini, Tom Carruthers, Olivier Maurin, Paul Bailey et autres

Abstract Angiosperms are the cornerstone of most terrestrial ecosystems and human livelihoods 1,2 . A robust understanding of angiosperm evolution is required to explain their rise to ecological dominance. So far, the angiosperm tree of life has been determined primarily by means …

gb, au, es, us, br, nl, de, ca, cn, Ghana, cr, it, ch, be, ec, fr (code pays fourni par la source)

A hemizygous supergene controls homomorphic and heteromorphic self-incompatibility systems in Oleaceae

Pauline Raimondeau, Sayam Ksouda, William Marande, Anne-Laure Fuchs et autres

fr, us, Algérie, gb (code pays fourni par la source)

Identifying leaf anatomy and metabolic regulators that underpin C 4 photosynthesis in Alloteropsis semialata

Ahmed S. Alenazi, Lara Pereira, Pascal‐Antoine Christin, Colin P. Osborne et autres

Summary C 4 photosynthesis is a complex trait requiring multiple developmental and metabolic alterations. Despite this complexity, it has independently evolved over 60 times. However, our understanding of the transition to C 4 is complicated by the fact that variation in photosynthetic …

sa, gb (code pays fourni par la source)

C4 photosynthesis provided an immediate demographic advantage to populations of the grass Alloteropsis semialata

Graciela Sotelo, Sara Gamboa, Luke T. Dunning, Pascal‐Antoine Christin et autres

Summary C4 photosynthesis is a key innovation in land plant evolution, but its immediate effects on population demography are unclear. We explore the early impact of the C4 trait on the trajectories of C4 and non‐C4 populations of the grass Alloteropsis semialata. …

es, gb (code pays fourni par la source)

Lateral gene transfer generates accessory genes that accumulate at different rates within a grass lineage

Pauline Raimondeau, Matheus E. Bianconi, Lara Pereira, Christian Parisod et autres

Lateral gene transfer (LGT) is the movement of DNA between organisms without sexual reproduction. The acquired genes represent genetic novelties that have independently evolved in the donor's genome. Phylogenetic methods have shown that LGT is widespread across the entire grass family, although …

fr, gb, ch (code pays fourni par la source)

Alloteropsis semialata as a study system for C4 evolution in grasses

Lara Pereira, Matheus E. Bianconi, Colin P. Osborne, Pascal‐Antoine Christin et autres

BACKGROUND: Numerous groups of plants have adapted to CO2 limitations by independently evolving C4 photosynthesis. This trait relies on concerted changes in anatomy and biochemistry to concentrate CO2 within the leaf and thereby boost productivity in tropical conditions. The ecological and economic …

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