Tag: Evolution

It has always been of interest to the plant community to understand the mechanisms behind the evolution of diverse floral carotenoid pigmentation within a genus. In this paper, Liang et al. investigated the mechanism behind monkeyflowers (Mimulus spp.) speciation driven by the flower color locus, YELLOW…

Floral development has been the object of decades of plant research, yet many fundamental questions remain. One of these is the mechanism by which LEAFY (LFY), the master transcription factor of floral development, works with UNUSUAL FLORAL ORGANS (UFO), an F-box protein, to regulate petal and stamen…

What a wonderful review! As the title indicates, this review by Liu et al. looks at transposons, considering their “life cycle” – from introduction into a naïve genome, through amplification, diversification, silencing, reactivation, and ultimately domestication or loss-of-function. Besides this…

RETINOBLASTOMA-RELATED (RBR) is the plant homolog of the metazoan Retinoblastoma protein (pRB) tumor suppressor and is a conserved cell cycle regulator. RBR has been linked to several multicellularity-related processes, such as controlled cell proliferation, stem cell regulation, and asymmetric cell…

The earliest terrestrial plants had relatively small, simple forms. The evolution of water-conducting cells provided opportunities for increased size. However, water movement by tension (driven by evaporation) can fail when the water column breaks and is blocked by an air bubble called an embolism. Looking…

In biology nothing makes sense but in the light of evolution. However, understanding how new traits can appear through modification of pre-existing elements has been a complex question in evolutionary biology. LaFountain et al. studied a population of a species of monkeyflower (Mimulus verbenaceus) which…

The September 2022 issue of Nature Plants includes two papers describing the analysis of homosporous fern genomes. Ferns are interesting for many reasons including the diversity of the clade, their typically very large genomes, their often free-living gametophytes, and in many cases, homospory (a single…

“Grassy biomes—from the steppes of Mongolia to the savannas of Tanzania— are predicted to be the ecosystems hardest hit by the ongoing climate and land use crises,” begins a Perspective by Strömberg and Staver in the August 4, 2022 Science special issue on Grasses that raises awareness of the…