On the origin and evolution of apomixis in Boechera [PDF]
Plant Reproduction, 2013 The genetic mechanisms causing seed development by gametophytic apomixis in plants are predominantly unknown. As apomixis is consistently associated with hybridity and polyploidy, these confounding factors may either (a) be the underlying mechanism for the expression of apomixis, or (b) obscure the genetic factors which cause apomixis.
Lovell, J.T. +8 more
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Boechera species exhibit species-specific responses to combined heat and high light stress. [PDF]
PLoS ONE, 2015 As sessile organisms, plants must be able to complete their life cycle in place and therefore tolerance to abiotic stress has had a major role in shaping biogeographical patterns. However, much of what we know about plant tolerance to abiotic stresses is
Genna Gallas, Elizabeth R Waters
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Globally Relaxed Selection and Local Adaptation in Boechera stricta. [PDF]
Genome Biol Evol, 2022 AbstractThe strength of selection varies among populations and across the genome, but the determinants of efficacy of selection remain unclear. In this study, we used whole-genome sequencing data from 467 Boechera stricta accessions to quantify the strength of selection and characterize the pattern of local adaptation. We found low genetic diversity on
Liang YY +4 more
europepmc +3 more sources
The Leading Edge Matters Too: Fitness and the Expression of Adaptive Differentiation Are Greatest at the High-Elevation Edge of a Species' Range. [PDF]
Ecol LettWe tested hypotheses about adaptation across elevational range limits in Erythranthe laciniata, a montane plant endemic to the Sierra Nevada. Using common garden experiments, we found highest fitness and strongest climate adaptation at high elevations, suggesting potential for range expansion and challenging assumptions of limited adaptive potential at
Shay JE +4 more
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Intraspecific diversification in North American Boechera stricta (= Arabis drummondii), Boechera ×divaricarpa, and Boechera holboellii (Brassicaceae) inferred from nuclear and chloroplast molecular markers—an integrative approach [PDF]
American Journal of Botany, 2004 We performed a combined evolutionary analysis of North American Boechera stricta, Boechera holboellii, and their hybrid Boechera ×divaricarpa using information on ploidy level estimators, allelic microsatellite variation, noncoding regions of the plastidic genome (cpDNA), and sequences of the internal transcribed spacers 1 and 2 of the nuclear ...
Dobes, C., Mitchell-Olds, T., Koch, M.
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Chromosomal Evolution and Apomixis in the Cruciferous Tribe Boechereae
Frontiers in Plant Science, 2020 The mustard family (Brassicaceae) comprises several dozen monophyletic clades usually ranked as tribes. The tribe Boechereae plays a prominent role in plant research due to the incidence of apomixis and its close relationship to Arabidopsis.
Terezie Mandáková +7 more
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PhytoKeys, 2018 Boechera is a model genus that is of particular interest for understanding apomixis due to the presence of numerous apomictic diploid lineages that are tightly correlated with hybridisation events. Boechera includes many narrowly distributed endemics and
David P. Morin +4 more
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Plant accession and insect infestation, rather than silicon supplementation, shape defence strategies of Arabidopsis halleri towards a leaf beetle. [PDF]
Plant Biol (Stuttg)Chemical and mechanical defences of a metal‐hyperaccumulating plant species Arabidopsis halleri were more influenced by plant accession (genetic background) and insect herbivory by a leaf beetle Phaedon cochleariae than by supplementation of the metalloid silicon.
Putra R, Paulic M, Müller C.
europepmc +2 more sources
Temporal and spatial expression of genes involved in DNA methylation during reproductive development of sexual and apomictic Eragrostis curvula [PDF]
, 2017 Recent reports in model plant species have highlighted a role for DNA methylation pathways in the regulation of the somatic-to-reproductive transition in the ovule, suggesting that apomixis (asexual reproduction through seeds) likely relies on RdDM ...
Echenique, Carmen Viviana +9 more
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Mutation Accumulation in an Asexual Relative of Arabidopsis. [PDF]
PLoS Genetics, 2017 Asexual populations experience weaker responses to natural selection, which causes deleterious mutations to accumulate over time. Additionally, stochastic loss of individuals free of deleterious mutations can lead to an irreversible increase in ...
John T Lovell +4 more
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