Ana Marcela Florez Rueda

Ana Marcela Florez Rueda
Max Planck Institute of Molecular Plant Physiology | MPIMP

PhD

About

17
Publications
1,408
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154
Citations

Publications

Publications (17)
Article
Full-text available
Given their diverse mating systems and recent divergence, wild tomatoes ( Solanum section Lycopersicon ) have become an attractive model system to study ecological divergence, the build-up of reproductive barriers, and the causes and consequences of the breakdown of self-incompatibility. Here we report on a lesser-studied group of species known as...
Article
Full-text available
Interest in understanding hybrid seed failure (HSF) has mushroomed, both in terms of identifying underlying molecular processes and their evolutionary drivers. We review phenotypic and molecular advances with a focus on the ‘effective ploidy’ concept, witnessing a recent revival after long obscurity. Endosperm misdevelopment has now been shown to u...
Chapter
Transcriptomic studies have proven powerful and effective as a tool to study the molecular underpinnings of plant development. Still, it remains challenging to disentangle cell- or tissue-specific transcriptomes in complex structures like the plant seed. In particular, the embryo of flowering plants is embedded in the endosperm, a nurturing tissue,...
Preprint
Full-text available
Crosses between the wild tomato species Solanum peruvianum and S. chilense result in hybrid seed failure (HSF), characterized by endosperm misdevelopment and embryo arrest. We previously showed that genomic imprinting, the parent of origin dependent expression of alleles, is perturbed in hybrid endosperm, with many of the normally paternally expres...
Article
Full-text available
he genera Boechera (A. Löve et D. Löve) and Arabidopsis, the latter containing the model plant Arabidopsis thaliana, belong to the same clade within the Brassicaceae family. Boechera is the only among the more than 370 genera in the Brassicaceae where apomixis is well documented. Apomixis refers to the asexual reproduction through seed, and a bette...
Article
Full-text available
The genera Boechera (A. Löve et D. Löve) and Arabidopsis, the latter containing the model plant Arabidopsis thaliana, belong to the same clade within the Brassicaceae family. Boechera is the only among the more than 370 genera in the Brassicaceae where apomixis is well documented. Apomixis refers to the asexual reproduction through seed, and a bett...
Article
Full-text available
Parental imbalances in the endosperm leading to impaired development and eventual hybrid seed failure are common causes of postzygotic isolation in flowering plants. Endosperm sensitivity to parental dosage is reflected by canonical phenotypes of 'parental excess' in reciprocal interploid crosses. Moreover, parental-excess traits are also evident i...
Article
Full-text available
Crosses between the wild tomato species Solanum peruvianum and S. chilense result in hybrid seed failure (HSF), characterized by endosperm misdevelopment and embryo arrest. We previously showed that genomic imprinting, the parent-of-origin–dependent expression of alleles, is perturbed in hybrid endosperm, with many of the normally paternally expres...
Preprint
Full-text available
Endosperm misdevelopment leading to hybrid seed failure is a common cause of postzygotic isolation in angiosperms and is observed in both interploidy and homoploid crosses between closely related lineages. Moreover, parental dosage is critical for successful endosperm and seed development, typically requiring a ratio of two maternal to one paternal...
Article
Genomic imprinting is a conspicuous feature of the endosperm, a triploid tissue nurturing the embryo and synchronizing angiosperm seed development. An unknown subset of imprinted genes (IGs) is critical for successful seed development and should have highly conserved functions. Recent genome‐wide studies have found limited conservation of IGs among...
Article
Background and aims: Defective hybrid seed development in angiosperms might mediate the rapid establishment of intrinsic post-zygotic isolation between closely related species. Extensive crosses within and among three lineages of wild tomatoes (Solanum section Lycopersicon) were performed to address the incidence, developmental timing and histolog...
Article
Full-text available
Hybrid seed failure represents an important postzygotic barrier to interbreeding among species of wild tomatoes (Solanum section Lycopersicon) and other flowering plants. We studied genome-wide changes associated with hybrid seed abortion in the closely related Solanum peruvianum and S. chilense where hybrid crosses yield high proportions of inviab...
Article
The understanding of developmental processes at the molecular level requires insights into transcriptional regulation, and thus the transcriptome, at the level of individual cell types. While the methods described here are generally applicable to a wide range of species and cell types, our research focuses on plant reproduction. Plant cultivation a...
Conference Paper
Hybrid seed failure is a common reproductive barrier between plant species. For plant breeders, it represents a major obstacle to introgression of desirable traits from wild to domesticated species. Postzygotic barriers to hybridization have been well-documented among wild tomato species, and histological work showed that endosperm failure is the m...
Poster
Hybrid seed failure, a common postzygotic barrier in angiosperms, is likely mediated by abnormal endosperm development, highlighting the pivotal role of the endosperm for proper seed development. Epigenetic processes modulate the parent-of-origin specific expression of so-called “imprinted” genes in the endosperm, some of which may be important for...
Article
Full-text available
Two recent high-profile studies offered empirical evidence for a “snowballing” accumulation of postzygotic incompatibilities in Drosophila and Solanum (tomatoes). Here we present a reanalysis of the Solanum data that is motivated by population genetic principles. Specifically, the high levels of intraspecific nucleotide polymorphism in wild tomato...

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Projects

Projects (3)
Project
Differential gene expression analyses between sexual and apomictic species of the Genus Boechera. Functional validation of candidate genes.