Divergent evolution of a thermospermine-dependent regulatory pathway in land plants.

Plants adapted to life on land by developing diverse anatomical features across lineages. The molecular basis of these innovations often involves the emergence of new genes or establishing new connections between conserved elements, though evidence for evolutionary genetic circuit rewiring remains scarce. Here, we show that the thermospermine-dependent pathway regulating vascular cell proliferation in Arabidopsis thaliana operates as two distinct modules with different functions in the bryophyte Marchantia polymorpha.

Light and temperature signals are integrated through a phytochrome B-dependent gene regulatory network in rice.

Angiosperms are the most dominant land plant flora and have colonized most of the terrestrial habitats, thriving in different environmental conditions, among which light and temperature play a crucial role. In the eudicot Arabidopsis thaliana, light and temperature are integrated into a phytochrome B (phyB)-dependent signalling network that regulates development. However, whether this signal integration controls the development in other angiosperm lineages and whether phyB is a conserved hub of this integratory network in angiosperms is unclear.

Endless forms most frustrating: disentangling species boundaries in the group (), with the description of six new species and a key to the group.

Oceanic islands have been recognized as natural laboratories in which to study a great variety of evolutionary processes. One such process is evolutionary radiations, the diversification of a single ancestor into a number of species that inhabit different environments and differ in the traits that allow them to exploit those environments. The factors that drive evolutionary radiations have been studied for decades in charismatic organisms such as birds or lizards, but are lacking in lichen-forming fungi, despite recent reports of some lineages showing diversification patterns congruent with radiation.

Exploring the Phytochemical Composition and the Bioactive Properties of Malbec and Torrontés Wine Pomaces from the Calchaquíes Valleys (Argentina) for Their Sustainable Exploitation.

Hydroalcoholic extracts from Malbec and Torrontés wine pomaces ( L.) originating from the high-altitude vineyards of Argentina's Calchaquí Valleys were characterized. Total phenolics, hydroxycinnamic acids, orthodiphenols, anthocyanins, non-flavonoid phenolics, total flavonoids, flavones/flavonols, flavanones/dihydroflavonols, and tannins were quantified through spectrophotometric methods, with the Malbec extract exhibiting higher concentrations in most of phytochemical groups when compared to Torrontés.