Canalization: A Central but Controversial Concept in Evo-Devo

González, Paula N.; Barbeito‐Andrés, Jimena

doi:10.1007/978-3-319-33038-9_55-1

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Individual phenotypes are often remarkably consistent within natural populations, despite considerable genetic and environmental variation. This phenomenon of intrinsic buffering against fluctuating conditions is described as canalization (Dworkin, 2005; Flatt, 2005; Gonzalez & Barbeito‐Andrés, 2018; Waddington, 1942). Canalization is commonly considered to have adaptive benefits, allowing for the expression of robust phenotypic traits in the face of unsteady environmental conditions, novel genetic mutations, developmental errors, or other sources of variation (Debat & David, 2001).…”

Section: Introductionmentioning

confidence: 99%

Inhibition of HSP90 causes morphological variation in the invasive ant Cardiocondyla obscurior

et al. 2021

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Canalization underlies the expression of steady phenotypes in the face of unsteady environmental conditions or varying genetic backgrounds. The chaperone HSP90 has been identified as a key component of the molecular machinery regulating canalization and a growing body of research suggests that HSP90 could act as a general capacitator in evolution. However, empirical data about HSP90-dependent phenotypic variation and its evolutionary impact is still scarce, particularly for non-model species. Here we report how pharmacological suppression of HSP90 increases morphological variation up to 87% in the invasive ant Cardiocondyla obscurior. We show that workers treated with the HSP90 inhibitor 17-DMAG are significantly more diverse compared to untreated workers in two of four measured traits: maximal eye distance and maximal propodeal spine distance. We further find morphological differentiation between natural populations of C. obscurior in the same traits that responded to our pharmacological treatment. These findings add support for the putative impact of HSP90 on canalization, the modularity of phenotypic traits, and its potential role in morphological evolution of ants.

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Section: Introductionmentioning

confidence: 99%

Inhibition of HSP90 causes morphological variation in the invasive ant Cardiocondyla obscurior

et al. 2021

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“…A recently-emerged focus on eco-evo-devo seeks to quantitatively understand such ecological causation of developmental evolution 3,4 . Many biotic ecological factors, such as predator-prey [5][6][7] and social interactions [8][9][10] , as well as abiotic factors such as temperature [11][12][13] and oxygen level [14][15][16] are hypothesized or known to play important roles in shaping the evolution of developmental features 4,17 , including developmental plasticity [18][19][20][21][22][23][24] .…”

Section: Introductionmentioning

confidence: 99%

Hidden paths to endless forms most wonderful: Ecology latently shapes evolution of multicellular development in predatory bacteria

Fortezza

Rendueles

Keller

et al. 2021

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Ecological causes of developmental-system evolution, for example from predation, remain under intense investigation. An important open question is the role of latent phenotypes in eco-evo-devo. The predatory bacterium Myxococcus xanthus undergoes aggregative multicellular development upon starvation. Here we use M. xanthus to test whether evolution in several distinct growth environments that do not induce development latently alters developmental phenotypes, including morphology and plasticity, in environments that do induce development. In the MyxoEE-3 evolution experiment, growing M. xanthus populations swarmed across agar surfaces while adapting to distinct conditions varying at factors such as surface stiffness or prey identity. All examined developmental phenotypes underwent extensive and ecologically specific latent evolution, with surface stiffness, prey presence and prey identity all strongly impacting the latent evolution of development. Evolution on hard agar allowed retention of developmental proficiency and extensive stochastic phenotypic radiation, including of reaction norms, with instances of both increased plasticity and canalization. In contrast, evolution on soft agar latently led to systematic loss of development, revealing an ecologically-contingent fitness trade-off between the growth and developmental phases of a multicellular life cycle that is likely determined by details of motility behavior. Similar contingency was observed after evolution during predatory growth in distinct prey environments, with Bacillus subtilis causing greater loss of development and lower stochastic diversification than Escherichia coli. Our results have implications for understanding evolutionary interactions among predation, development and motility in myxobacterial life cycles, and, more broadly, the importance of latent phenotypes for the diversification of developmental systems.

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Canalization: A Central but Controversial Concept in Evo-Devo

Cited by 2 publications

References 21 publications

Inhibition of HSP90 causes morphological variation in the invasive ant Cardiocondyla obscurior

Inhibition of HSP90 causes morphological variation in the invasive ant Cardiocondyla obscurior

Hidden paths to endless forms most wonderful: Ecology latently shapes evolution of multicellular development in predatory bacteria

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