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2019
Journal article
C4 anatomy can evolve via a single developmental change
C4 photosynthesis is a complex trait that boosts productivity in warm environments. Paradoxically, it evolved independently in numerous plant lineages, despite requiring specialised leaf anatomy. The anatomical modifications underlying C4 evolution have previously been evaluated through interspecific comparisons, which capture numerous changes besides those needed for C4 functionality. Here, we...Lundgren, Marjorie ; Dunning, Luke ; Olofsson, Jill ; Moreno-Villena, Jose ; Bouvier, Jacques …
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2019
Journal article
Continued Adaptation of C4 Photosynthesis After an Initial Burst of Changes in the Andropogoneae Grasses
Abstract C4 photosynthesis is a complex trait that sustains fast growth and high productivity in tropical and subtropical conditions and evolved repeatedly in flowering plants. One of the major C4 lineages is Andropogoneae, a group of ∼ 1,200 grass species that includes some of the world's most important crops and...Bianconi, Matheus E ; Hackel, Jan ; Vorontsova, Maria S. ; Alberti, Adriana ; Arthan, Watchara …
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2019
Journal article
The endemic ‘sugar canes’ of Madagascar (Poaceae, Saccharinae: Lasiorhachis) are close relatives of sorghum
Crop wild relatives are important but often poorly known. This is the case for subtribe Saccharinae (Poaceae: Andropogoneae), which includes sugarcane (Saccharum) and sorghum (Sorghum). We present a phylogenetic and taxonomic account of the Malagasy endemic genus Lasiorhachis, previously included in Saccharum. New plastome and nuclear sequences were assembled from...Vorontsova, Maria S. ; Besnard, Guillaume ; Razanatsoa, Jacqueline ; Hackel, Jan
Plant Science and Ecology, Evolution, Behavior and Systematics
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2020
Journal article
Contrasted histories of organelle and nuclear genomes underlying physiological diversification in a grass species
C4 photosynthesis evolved multiple times independently in angiosperms, but most origins are relatively old so that the early events linked to photosynthetic diversification are blurred. The grass Alloteropsis semialata is an exception, as this species encompasses C4 and non-C4 populations. Using phylogenomics and population genomics, we infer the history of...Bianconi, Matheus E. ; Dunning, Luke T. ; Curran, Emma V. ; Hidalgo, Oriane ; Powell, Robyn F. …
polyploidy, miombo woodlands, phylogenomics, C4 photosynthesis, phylogeography, and admixture
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2020
Journal article
Geographical structure of genetic diversity in Loudetia simplex (Poaceae) in Madagascar and South Africa
Ecologically dominant species are primary determinants of ecosystem function, especially in grassy ecosystems, but the history and biology of grassy ecosystems in Madagascar are poorly understood compared to those of Africa. Loudetia simplex is a C4 perennial grass that is adapted to fire and common to dominant across Africa. It... -
2020
Journal article
Contrasted histories of organelle and nuclear genomes underlying physiological diversification in a grass species
C4 photosynthesis evolved multiple times independently in angiosperms, but most origins are relatively old so that the early events linked to photosynthetic diversification are blurred. The grass Alloteropsis semialata is an exception, as this species encompasses C4 and non-C4 populations. Using phylogenomics and population genomics, we infer the history of...Bianconi, Matheus E. ; Dunning, Luke T. ; Curran, Emma V. ; Hidalgo, Oriane ; Powell, Robyn F. …
polyploidy, miombo woodlands, admixture, C₄ photosynthesis, phylogeography, and phylogenomics
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2019
Journal article
Late Miocene origin and recent population collapse of the Malagasy savanna olive tree (Noronhia lowryi)
Debates regarding the origin of tropical savannas have attempted to disentangle the role of human, biotic and abiotic factors. Understanding the origins of savanna remains essential to identifying processes that gave rise to habitat mosaics, particularly those found in the Central Plateau of Madagascar. Documenting the evolutionary history and demography... -
2021
Journal article
Complex evolutionary history of two ecologically significant grass genera, Themeda and Heteropogon (Poaceae: Panicoideae: Andropogoneae).
Arthan, Watchara ; Dunning, Luke T. ; Besnard, Guillaume ; Manzi, Sophie ; Kellogg, Elizabeth A. …
Pleistocene, C4 grassland expansion, Phylogenomics, Plastomes, Anthistiriinae, and Dating
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2018
Journal article
Grass Functional Traits Differentiate Forest and Savanna in the Madagascar Central Highlands.
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2020
Journal article
Late Miocene origin and recent population collapse of the Malagasy savanna olive tree (Noronhia lowryi).
Salmona, Jordi ; Olofsson, Jill K ; Hong-Wa, Cynthia ; Razanatsoa, Jacqueline ; Rakotonasolo, Franck …
Late Miocene, Madagascar, Savanna olive tree, Noronhia lowryi, and Corrigendum