Phylogeny of the Paniceae (Poaceae: Panicoideae): integrating plastid DNA sequences and morphology into a new classification (project)

Morrone, M; Aagesen, A; Scataglini, Amalia; Salariato, L; Denham, Silvia S.; Chemisquy, Amelia; Sede, Mariano Miguel; Giussani, M; Kellogg, A; Zuloaga, O

doi:10.7934/p942

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“…Sometimes succulence is lost within a C 4 clade as found in Bassia (Kadereit & Freitag, 2011 ). In the salt‐tolerant C 4 grass Spinifex littoreus , however, C 4 evolution preceded that of succulence and salt tolerance (Ho et al., 2019 ; Morrone et al., 2012 ).…”

Section: Discussionmentioning

confidence: 99%

“…All lineages that combine succulence and C 4 photosynthesis seem to be derived from ancestrally succulent C 3 lineages (e.g., Tetraena simplex in Zygophyllaceae (Lauterbach et al, 2016) Bassia (Kadereit & Freitag, 2011). In the salt-tolerant C 4 grass Spinifex littoreus, however, C 4 evolution preceded that of succulence and salt tolerance (Ho et al, 2019;Morrone et al, 2012).…”

Section: Functional Traits Lead To Ecological Diversity In C 4 Eudicotsmentioning

confidence: 99%

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Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

Berasategui,

Žerdoner Čalasan,

Zizka

et al. 2023

Ecology and Evolution

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C₄ is one of three known photosynthetic processes of carbon fixation in flowering plants. It evolved independently more than 61 times in multiple angiosperm lineages and consists of a series of anatomical and biochemical modifications to the ancestral C3 pathway increasing plant productivity under warm and light‐rich conditions. The C4 lineages of eudicots belong to seven orders and 15 families, are phylogenetically less constrained than those of monocots and entail an enormous structural and ecological diversity. Eudicot C4 lineages likely evolved the C4 syndrome along different evolutionary paths. Therefore, a better understanding of this diversity is key to understanding the evolution of this complex trait as a whole. By compiling 1207 recognised C4 eudicots species described in the literature and presenting trait data among these species, we identify global centres of species richness and of high phylogenetic diversity. Furthermore, we discuss climatic preferences in the context of plant functional traits. We identify two hotspots of C4 eudicot diversity: arid regions of Mexico/Southern United States and Australia, which show a similarly high number of different C4 eudicot genera but differ in the number of C4 lineages that evolved in situ. Further eudicot C4 hotspots with many different families and genera are in South Africa, West Africa, Patagonia, Central Asia and the Mediterranean. In general, C4 eudicots are diverse in deserts and xeric shrublands, tropical and subtropical grasslands, savannas and shrublands. We found C4 eudicots to occur in areas with less annual precipitation than C4 grasses which can be explained by frequently associated adaptations to drought stress such as among others succulence and salt tolerance. The data indicate that C4 eudicot lineages utilising the NAD‐ME decarboxylating enzyme grow in drier areas than those using the NADP‐ME decarboxylating enzyme indicating biochemical restrictions of the later system in higher temperatures. We conclude that in most eudicot lineages, C4 evolved in ancestrally already drought‐adapted clades and enabled these to further spread in these habitats and colonise even drier areas.

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Section: Discussionmentioning

confidence: 99%

Section: Functional Traits Lead To Ecological Diversity In C 4 Eudicotsmentioning

confidence: 99%

Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

Berasategui,

Žerdoner Čalasan,

Zizka

et al. 2023

Ecology and Evolution

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Phylogeny of the Paniceae (Poaceae: Panicoideae): integrating plastid DNA sequences and morphology into a new classification (project)

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Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

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Phylogeny of the Paniceae (Poaceae: Panicoideae): integrating plastid DNA sequences and morphology into a new classification (project)

Cited by 1 publication

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Global distribution, climatic preferences and photosynthesis‐related traits of C4 eudicots and how they differ from those of C4 grasses

Global distribution, climatic preferences and photosynthesis‐related traits of C4 eudicots and how they differ from those of C4 grasses

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Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses