Tag: Genetics

In addition to its well-known nutritive function, the endosperm of seeds has a great deal of morphological, genomic and functional diversity. In this review, Rangan summarizes endosperm variability and the molecular mechanisms behind it. Although classically described as being triploid (2n from the mother…

Dioecy (male and female flowers residing on distinct individuals) has independently arisen several times in angiosperms, yet the genetic basis of dioecy remains obscure. Here, Müller et al. reveal a single gene that acts as a sex-determination switch throughout the Populus genus. A negative regulator…

Originating in China’s Yangtze Valley ~9,000 years ago, rice (Oryza sativa) is a staple food for over half of the world’s population. While rice domestication has been well-researched, studies addressing the species' diversification and spread post-domestication are lacking. Here, Gutaker et al. tell…

Flower development has always been a fascinating field of research in plant biology. While molecular studies in the past focused on regulatory genes involved in the formation of floral organs in model species, current investigations are addressing the genetic determinants underlying the huge variety…

Conventional approaches to connect phenotype to genotype, including genome-wide association studies (GWAS), are often limited by the quality of the species’ reference genome, and frequently neglect to detect structural variants that are common in plant genomes. Here, Voichek and Weigel present a “No-Genome-Required-GWAS”…

Genome duplications are common in plants and thought to be an important contributor to evolutionary innovations, but the increase in ploidy that results from a genome duplication also presents challenges for reproduction. Because there are four sets of homologous chromosomes in the derived tetraploid…

Genome-wide association studies (GWAS) are widely used to link natural genetic variation to trait variation, with a single or a select few correlated traits assessed. High-throughput phenotyping allows the scoring of hundreds of individuals for various traits at several time points. An undeniable consequence…

Recent advances have facilitated the generation of huge phenotypic datasets from plant populations. However, the means to inexpensively organise such datasets to unequivocally determine causal genes has evaded researchers. Here, Baxter discusses how human bias when selecting candidate genes is compromising…