Preface to the Special Issue on African Flora in a Changing World: Integrating multiple dimensions of diversity DOI Open Access
A. Muthama Muasya, Jasper A. Slingsby, G. Anthony Verboom

et al.

Annals of Botany, Journal Year: 2024, Volume and Issue: 133(5-6), P. 643 - 648

Published: April 4, 2024

Africa is home to globally important biodiversity.Straddling the equator and extending temperate latitudes (at 37°N 34°S; not including oceanic islands such as Marion Prince Edward), continent accommodates a variety of ecosystems biomes, tropical forests, savanna montane grasslands, deserts, Mediterranean-type (Olson et al., 2011;Linder, 2014).The has remained relatively stable in Cenozoic period (66 2.5 million years ago, Ma), despite dramatic geological events, shifting coastlines, volcanism formation rift valley (Couvreur 2021).Africa rich diversity vascular plants, with over 65 000 species recorded on its surrounding (Qian 2021).This equates approximately 18.5% plant (Antonelli 2023).However, efforts catalogue African composition are uneven, certain regions (e.g.tropical east central Africa) being well catalogued others (e.g.Sudan) barely explored (Marshal 2016).At same time, increased ecological evolutionary research points varied patterns diversification assembly flora; however, there lack wider consolidation disparate knowledge.This Special Issue aims bring together pan-African build holistic synthesis knowledge ecology evolution plants.

Language: Английский

Determinants of biogeographical distribution of grasses in grasslands of South America DOI
Helena Streit, Rodrigo Scarton Bergamin, Bianca Ott Andrade

et al.

Perspectives in Plant Ecology Evolution and Systematics, Journal Year: 2024, Volume and Issue: 63, P. 125791 - 125791

Published: April 5, 2024

Language: Английский

Citations

4
Drought tolerance as an evolutionary precursor to frost and winter tolerance in grasses DOI Creative Commons
Laura Schat, Marian Schubert, Siri Fjellheim

et al.

Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 18, 2025

Abstract Accumulating evidence is suggesting more frequent tropical-to-temperate transitions than previously thought. This raises the possibility that biome could be facilitated by precursor traits. A wealth of ecological, genetic and physiological suggests overlap between drought frost stress responses, but origin this overlap, i.e. evolution these responses relative to each other, poorly known. Here, we test whether adaptation and/or severe winters in grasses (Poaceae) was ancestral drought. We used occurrence patterns across Köppen-Geiger climate zones classify species as drought, winter tolerant, followed comparative analyses. Ancestral state reconstructions revealed different evolutionary trajectories clades, both drought-first frost-first scenarios. Explicit simultaneous modelling frost/winter tolerance provided some support for correlated evolution, suggested higher rates gain sensitive rather tolerant lineages. Overall, there limited a whole acted an or tolerance. Different scenarios clades consistent with present-day being either cold specialists, possibly consequence trade-offs responses.

Language: Английский

Citations

0
Persistent Habitat Instability and Patchiness, Sexual Attraction, Founder Events, Drift and Selection: A Recipe for Rapid Diversification of Orchids DOI Creative Commons
James D. Ackerman, Raymond L. Tremblay, Tatiana Arias

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(8), P. 1193 - 1193

Published: April 11, 2025

Orchidaceae is one of the most species-rich families flowering plants, with current diversity having evolved within last 5 My. Patterns associated species richness and rapid diversification have been identified but not often evolutionary processes. We review frequently correlates suggest that processes rate by which they occur vary geographically are largely dependent on persistent pulses habitat instabilities, especially for epiphytes. Aggressive orogenesis creates fragmented habitats while global climatic cycles exacerbate ecological instabilities. The need repeated dispersal results in frequent founder events, sets stage allopatric via bouts genetic drift natural selection. allopatry requirement can be bypassed pollination systems involving flowers attracting pollinators through production sex signaling semiochemicals. drift-selection model diversification, coupled instability throughout geological time scales, likely components a multifactorial process leading to rapid, recent this family.

Language: Английский

Citations

0
Why plant diversity and distribution matter DOI Open Access
Alexandre Antonelli, Rafaël Govaerts, Eimear Nic Lughadha

et al.

New Phytologist, Journal Year: 2023, Volume and Issue: 240(4), P. 1331 - 1336

Published: Oct. 9, 2023

This article is the Editorial for Special Collection ‘Global plant diversity and distribution’. See https://www.newphytologist.org/global-plant-diversity more details.

Language: Английский

Citations

9
Evolution of frost and drought responses in cool season grasses (Pooideae): was drought tolerance a precursor to frost tolerance? DOI Creative Commons

Sylvia Pal Stolsmo,

Camilla Lorange Lindberg,

Rebekka Eriksen Ween

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: April 23, 2024

Frost tolerance has evolved many times independently across flowering plants. However, conservation of several frost mechanisms among distant relatives suggests that apparently independent entries into freezing climates may have been facilitated by repeated modification existing traits (precursor traits). One possible precursor trait for is drought tolerance, because palaeoclimatic data suggest plants were exposed to before and studies demonstrated shared physiological genetic responses stress. Here, we combine ecophysiological experiments comparative analyses test the hypothesis acted as a in cool-season grasses (Pooideae). Contrary our predictions, measured highest levels species with lowest ancestral suggesting two stress different lineages. We further show more evolutionarily labile than tolerance. This could limit ability reconstruct order which relative each other. Further research needed determine whether results are unique Pooideae or general

Language: Английский

Citations

2
Drought tolerance as an evolutionary precursor to frost and winter tolerance in grasses DOI
Laura Schat, Marian Schubert, Siri Fjellheim

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 2, 2024

Abstract Accumulating evidence is suggesting more frequent tropical-to-temperate transitions than previously thought. This raises the possibility that biome could be facilitated by precursor traits. A wealth of ecological, genetic and physiological suggests overlap between drought frost stress responses, but origin this overlap, i.e. evolution these responses relative to each other, poorly known. Here, we test whether adaptation and/or severe winters in grasses (Poaceae) was ancestral drought. We used occurrence patterns across Köppen-Geiger climate zones classify species as drought, winter tolerant, followed comparative analyses. Ancestral state reconstructions revealed different evolutionary trajectories clades, both drought-first frost-first scenarios. model correlated not supported when transition rate heterogeneity taken into account or compared traits simulated under independent evolution. Our findings provide some support for tolerance facilitating cold, temperate biomes, at least clades. Different scenarios clades consistent with present-day being either cold specialists, possibly a consequence trade-offs responses.

Language: Английский

Citations

2
Habitat differentiation and environmental adaptability contribute to leaf size variations globally in C3 and C4 grasses DOI
Wuchao Gao, Dachuan Dai,

Huan Luo

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 937, P. 173309 - 173309

Published: May 21, 2024

Language: Английский

Citations

1
Preface to the Special Issue on African Flora in a Changing World: Integrating multiple dimensions of diversity DOI Open Access
A. Muthama Muasya, Jasper A. Slingsby, G. Anthony Verboom

et al.

Annals of Botany, Journal Year: 2024, Volume and Issue: 133(5-6), P. 643 - 648

Published: April 4, 2024

Africa is home to globally important biodiversity.Straddling the equator and extending temperate latitudes (at 37°N 34°S; not including oceanic islands such as Marion Prince Edward), continent accommodates a variety of ecosystems biomes, tropical forests, savanna montane grasslands, deserts, Mediterranean-type (Olson et al., 2011;Linder, 2014).The has remained relatively stable in Cenozoic period (66 2.5 million years ago, Ma), despite dramatic geological events, shifting coastlines, volcanism formation rift valley (Couvreur 2021).Africa rich diversity vascular plants, with over 65 000 species recorded on its surrounding (Qian 2021).This equates approximately 18.5% plant (Antonelli 2023).However, efforts catalogue African composition are uneven, certain regions (e.g.tropical east central Africa) being well catalogued others (e.g.Sudan) barely explored (Marshal 2016).At same time, increased ecological evolutionary research points varied patterns diversification assembly flora; however, there lack wider consolidation disparate knowledge.This Special Issue aims bring together pan-African build holistic synthesis knowledge ecology evolution plants.

Language: Английский

Citations

1