Phylogeny and the inference of evolutionary trajectories

Hancock, Lillian P.; Edwards, Erika J.

doi:10.1093/jxb/eru118

Cited by 19 publications

(13 citation statements)

References 45 publications

(58 reference statements)

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“…In all lineages investigated, a high BS : M has been found in C 3 plants that are close relatives of C 4 plants, suggesting that a high BS : M trait is ancestral to the clade in question, and thus evolves before any implementation of a C 4 biochemical cycle. This does seem to be the most parsimonious explanation, although any sort of formal ancestral state reconstruction analysis is rarely performed (Hancock & Edwards, ).…”

Section: The C4 Evolutionary Trajectory: Anatomy First Biochemistry mentioning

confidence: 99%

Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis

2019

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Summary Are evolutionary outcomes predictable? Adaptations that show repeated evolutionary convergence across the Tree of Life provide a special opportunity to dissect the context surrounding their origins, and identify any commonalities that may predict why certain traits evolved many times in particular clades and yet never evolved in others. The remarkable convergence of C4 and Crassulacean Acid Metabolism (CAM) photosynthesis in vascular plants makes them exceptional model systems for understanding the repeated evolution of complex phenotypes. This review highlights what we have learned about the recurring assembly of C4 and CAM, focusing on the increasingly predictable stepwise evolutionary integration of anatomy and biochemistry. With the caveat that we currently understand C4 evolution better than we do CAM, I propose a general model that explains and unites C4 and CAM evolutionary trajectories. Available data suggest that anatomical modifications are the ‘rate‐limiting step’ in each trajectory, which in large part determines the evolutionary accessibility of both syndromes. The idea that organismal structure exerts a primary influence on innovation is discussed in the context of other systems. Whether the rate‐limiting step occurs early or late in the evolutionary assembly of a new phenotype may have profound implications for its distribution across the Tree of Life.

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Section: The C4 Evolutionary Trajectory: Anatomy First Biochemistry mentioning

confidence: 99%

Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis

2019

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“…Furthermore, if evolutionary responses are rapid enough, it becomes impossible to identify the evolutionary sequences and transitional conditions that might provide us with clues about cause and effect, especially about evolutionary events that happened long ago. Faced with these difficulties, convincing answers may not be achieved using phylogenies alone (Christin et al 2010;Hancock and Edwards 2014). Progress, then, depends on the integration of phylogenetic studies with other lines of evidence (Weber and Agrawal 2012;Olson and Arroyo-Santos 2015) and, as we highlight, perhaps by further deconstruction of the traits and potential selective factors of interest.…”

Section: Introductionmentioning

confidence: 95%

Convergence, Consilience, and the Evolution of Temperate Deciduous Forests

Edwards

Chatelet

Chen

et al. 2017

The American Naturalist

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The deciduous habit of northern temperate trees and shrubs provides one of the most obvious examples of convergent evolution, but how did it evolve? Hypotheses based on the fossil record posit that deciduousness evolved first in response to drought or darkness and preadapted certain lineages as cold climates spread. An alternative is that evergreens first established in freezing environments and later evolved the deciduous habit. We monitored phenological patterns of 20 species of Viburnum spanning tropical, lucidophyllous (subtropical montane and warm temperate), and cool temperate Asian forests. In lucidophyllous forests, all viburnums were evergreen plants that exhibited coordinated leaf flushes with the onset of the rainy season but varied greatly in the timing of leaf senescence. In contrast, deciduous species exhibited tight coordination of both flushing and senescence, and we found a perfect correlation between the deciduous habit and prolonged annual freezing. In contrast to previous stepwise hypotheses, a consilience of independent lines of evidence supports a lockstep model in which deciduousness evolved in situ, in parallel, and concurrent with a gradual cooling climate. A pervasive selective force combined with the elevated evolutionary accessibility of a particular response may explain the massive convergence of adaptive strategies that characterizes the world's biomes.

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“…Reconstructing the evolution of C 4 photosynthesis is challenging as it requires the complex coordination of anatomical, ultrastructural, biochemical, and gene regulatory changes from C 3 ancestors ( Hibberd and Covshoff, 2010 ; Gowik and Westhoff, 2011 ; Sage et al , 2012 , 2014 ; Williams et al , 2012 ; Hancock and Edwards, 2014 ). In bringing together these aspects, a model of C 4 evolution where Kranz anatomy is formed around individual veins has been developed over the last 30 years, which includes potential evolutionary precursors and a number of transitional, evolutionary-stable states ( Monson et al , 1984 ; Edwards and Ku, 1987 ; Sage, 2004 ; Gowik and Westhoff, 2011 ; Sage et al , 2012 , 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny and forms of photosynthesis in tribe Salsoleae (Chenopodiaceae)

Schüssler

Freitag

Koteyeva

et al. 2016

EXBOTJ

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Phylogeny and the inference of evolutionary trajectories

Abstract: SummaryWe simulated ordered and unordered character evolution across phylogenetic trees to understand how tree size, models of evolution, and sampling efforts influence the ability to detect an evolutionary trajectory.

Cited by 19 publications

References 45 publications

Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis

Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis

Convergence, Consilience, and the Evolution of Temperate Deciduous Forests

Molecular phylogeny and forms of photosynthesis in tribe Salsoleae (Chenopodiaceae)

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Phylogeny and the inference of evolutionary trajectories

Abstract: SummaryWe simulated ordered and unordered character evolution across phylogenetic trees to understand how tree size, models of evolution, and sampling efforts influence the ability to detect an evolutionary trajectory.

Cited by 19 publications

References 45 publications

Evolutionary trajectories, accessibility and other metaphors: the case of C4 and CAM photosynthesis

Evolutionary trajectories, accessibility and other metaphors: the case of C4 and CAM photosynthesis

Convergence, Consilience, and the Evolution of Temperate Deciduous Forests

Molecular phylogeny and forms of photosynthesis in tribe Salsoleae (Chenopodiaceae)

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Product

Resources

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Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis

Evolutionary trajectories, accessibility and other metaphors: the case of C₄ and CAM photosynthesis