Tag: Plant reproduction

Regulation of flowering in time and space in perennials like Arabis alpina involves two systems. One uses orthologs to FLOWERING LOCUS C (FLC) from A. thaliana; in A. alpine is called PERPETUAL FLOWERING 1 (PEP1) and its repression enables flowering after vernalization. The other system uses microRNA156…

The key event for speciation is reproductive isolation. In sexually reproducing plants, genetic factors act as reproductive barriers preventing the interbreeding of related strains. In this study, Lu et al. aimed to explore how the Tcb1-s (Teosinte crossing barrier 1-s) haplotype, found exclusively in…

Floral color and patterning each play a role in filtering pollinator visits to any given flower. However, just as the color and patterning of flowers is multidimensional, so too should be our understanding of the relative importance of color-related traits in pollinator preference. Hirota et al.…

Bryophytes spend most of their lifecycle in the haploid, gametophytic form, of which there are two types, male (sperm forming) and female (egg forming). Hisanaga et al. investigated the genetic basis that determines sex in the model liverwort Marchantia polymorpha. Their findings are fascinating. A single…

Non-shattering seed, or seed that stays attached to the stem when mature, is a key domestication trait that makes harvesting easier. Previous studies have identified several domestication genes that suppress the formation of the seed's abscission zone, thus preventing shattering. Jiang et al. used a…

The economic importance of angiosperms, whether for food, ornamentals, timber, pharmaceuticals, or any other commercial product is easy to prove. However, their origin is not. Evolutionary biologists have long debated the origin of flowering plants. Fu et al., have unearthed fossils from the Early Jurassic…

Floral heteromorphy (differences in form) in Primula has long been of interest to plant biologists. Over 150 years ago, Charles Darwin recognized the importance of this floral anatomy for promoting cross-pollination. In heterostylous Primula species, plants produce either, pin or thrum flowers. Pins…

In rice, successful completion of meiosis to generate haploid cells is essential for seed production and propagation. This process is complex, requires precise regulation, and produces visible changes in the structure of chromosomes. In this paper, Zhao et al., characterize a sterile rice mutant with…