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Selection: with tag niche-limits [2 articles] 

 

Ancestral alliances: plant mutualistic symbioses with fungi and bacteria

  
Science, Vol. 356, No. 6340. (25 May 2017), eaad4501, https://doi.org/10.1126/science.aad4501

Abstract

[Taking a look at plant-microbe relationships] Ever since plants colonized land, they have evolved a range of mutualistic associations with bacteria and fungi. Indeed, such associations were probably required for plants to grow on harsh, nutrient-poor surfaces. Martin et al. review the spectrum of plant-microbe symbioses and their evolution, including evidence from the Rhynie Chert of the Devonian period and modern associations. Surprisingly, diverse functional plant-microbial symbioses have several common conserved features, including signaling pathways, immune evasion, and root development. [Structured Abstract] [::Background] Among the ...

 

Hybrid incompatibility caused by an epiallele

  
Proceedings of the National Academy of Sciences, Vol. 114, No. 14. (04 April 2017), pp. 3702-3707, https://doi.org/10.1073/pnas.1700368114

Abstract

[Significance] Deleterious mutations in different copies of a duplicated gene pair have the potential to cause hybrid incompatibility between diverging subpopulations, contributing to reproductive isolation and speciation. This study demonstrates a case of epigenetic gene silencing rather than pseudogene creation by mutation, contributing to a lethal gene combination on hybridization of two ecotypes of Arabidopsis thaliana. Our findings provide direct evidence that naturally occurring epigenetic variation can contribute to incompatible hybrid genotypes, reducing gene flow between subtypes of the same species. [Abstract] Hybrid incompatibility ...

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Integrated Natural Resources Modelling and Management - Meta-information Database. http://mfkp.org/INRMM/tag/niche-limits

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