Cláudia Martinho
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View article: A manifesto for plant science education
A manifesto for plant science education Open
Societal Impact Statement Plants provide oxygen, food, shelter, medicines and environmental services, without which human society could not exist. Tackling pressing and global challenges requires well‐trained plant scientists and plant‐awa…
View article: Characterization of the transposable element landscape shaping the Ectocarpus genome
Characterization of the transposable element landscape shaping the Ectocarpus genome Open
Background Comprising up to 90% of eukaryotic genomes, transposable elements (TEs) are mobile genetic units that play fundamental roles in evolution. Brown algae, one of the most complex multicellular eukaryotic groups that evolved indepen…
View article: Latent endogenous viral elements drive active infection and inheritance in a multicellular host
Latent endogenous viral elements drive active infection and inheritance in a multicellular host Open
Endogenous viral elements (EVEs) inserted in host genomes are often regarded as inert relics of past infections. Whether they can retain infective potential and contribute to active viral cycles has remained unresolved. Here, we demonstrat…
View article: Efficient CRISPR–Cas genome editing in brown algae
Efficient CRISPR–Cas genome editing in brown algae Open
Summary Brown algae represent the third most complex lineage to evolve multicellularity, independently from plants and animals. However, functional studies of their development, evolution, and biology have been constrained by the lack of e…
View article: 3D chromatin maps of a brown alga reveal U/V sex chromosome spatial organization
3D chromatin maps of a brown alga reveal U/V sex chromosome spatial organization Open
Sex chromosomes are unique genomic regions displaying structural and evolutionary features that distinguish them markedly from autosomes. Although nuclear three dimensional (3D) folding of chromatin structure is im-portant for gene express…
View article: Interactions between U and V sex chromosomes during the life cycle of <i>Ectocarpus</i>
Interactions between U and V sex chromosomes during the life cycle of <i>Ectocarpus</i> Open
In many animals and flowering plants, sex determination occurs in the diploid phase of the life cycle with XX/XY or ZW/ZZ sex chromosomes. However, in early diverging plants and most macroalgae, sex is determined by female (U) or male (V) …
View article: Repeated co-option of HMG-box genes for sex determination in brown algae and animals
Repeated co-option of HMG-box genes for sex determination in brown algae and animals Open
In many eukaryotes, genetic sex determination is not governed by XX/XY or ZW/ZZ systems but by a specialized region on the poorly studied U (female) or V (male) sex chromosomes. Previous studies have hinted at the existence of a dominant m…
View article: Sex chromosome dominance in a UV sexual system
Sex chromosome dominance in a UV sexual system Open
The alternation between multicellular haploid gametophytes and diploid sporophytes is a defining feature of most plant and algal life cycles. In such organisms, male and female sexes are determined in the haploid gametophyte with a female …
View article: CHROMOMETHYLTRANSFERASE3/KRYPTONITE maintains the <i>sulfurea</i> paramutation in <i>Solanum lycopersicum</i>
CHROMOMETHYLTRANSFERASE3/KRYPTONITE maintains the <i>sulfurea</i> paramutation in <i>Solanum lycopersicum</i> Open
Significance Paramutation involves the transfer of a repressive epigenetic mark between silent and active alleles. It is best known from exceptional non-Mendelian inheritance of conspicuous phenotypes in maize but also in other plants and …
View article: CHROMOMETHYLTRANSFERASE3/ KRYPTONITE maintain the <i>sulfurea</i> paramutation in <i>Solanum lycopersicum</i>
CHROMOMETHYLTRANSFERASE3/ KRYPTONITE maintain the <i>sulfurea</i> paramutation in <i>Solanum lycopersicum</i> Open
Paramutation involves the transfer of a repressive epigenetic mark from a silent allele to an active homologue and, consequently, non-Mendelian inheritance. In tomato the sulfurea ( sulf ) paramutation is associated with a high level of CH…
View article: DEK influences the trade-off between growth and arrest via H2A.Z-nucleosomes in Arabidopsis
DEK influences the trade-off between growth and arrest via H2A.Z-nucleosomes in Arabidopsis Open
The decision of whether to grow and proliferate or to restrict growth and develop resilience to stress is a key biological trade-off. In plants, constitutive growth results in increased sensitivity to environmental stress 1,2 . The underly…
View article: Arabidopsis RNA processing factor SERRATE regulates the transcription of intronless genes
Arabidopsis RNA processing factor SERRATE regulates the transcription of intronless genes Open
Intron splicing increases proteome complexity, promotes RNA stability, and enhances transcription. However, introns and the concomitant need for splicing extend the time required for gene expression and can cause an undesirable delay in th…
View article: Cover and technical information
Cover and technical information Open
Diagnóstico de equilíbrios entre Património, habitação e