Endosperm turgor pressure both promotes and restricts seed growth and size (bioRxiv)
Plant Science Research WeeklySeed size is a plant trait with agricultural and ecological relevance. However, the mechanisms that determine the final size of seeds are still subject to debate. Here, Creff and colleagues use computational models and mutant experiments to dissect the role of endosperm turgor in Arabidopsis seed size.…
Evolution and ecology of seed internal morphology in relation to germination characteristics in Amaranthaceae ($) (Ann. Bot.)
Plant Science Research WeeklySeed germination, a critical life stage in a plant's life cycle, can be affected by internal seed morphology. In this exciting research, Vandelook and colleagues investigated the evolution of embryo and nutritive tissue characteristics and their relationship with the germination traits of 84 species…
Review: Time to wake up: Epigenetic and small-RNA-mediated regulation during seed germination (Plants)
Plant Science Research WeeklySeed germination is a crucial step in plants' life cycle and has critical implications in ecological and agronomic contexts. Therefore, there has been an increasing interest in understanding the mechanisms that prevent or trigger this process. Here, Luján-Soto and Dinkova provide a thorough review of…
Experimental evidence of microbial inheritance in plants and transmission routes from seed to phyllosphere and root (Environ. Microbiol.)
Plant Science Research WeeklyAll plant species are associated with a diverse yet distinct assemblage of microorganisms known as the microbiome. Traditionally, the environment is considered the primary source of these microbes. However, Abdelfattah and colleagues' fascinating research shows that seeds can act as vehicles to share…
Seed tolerance to post-fire temperature fluctuation of Cerrado legume shrubs with micromorphological implications ($) (Flora)
Plant Science Research WeeklyLegume seeds are typically physically dormant, meaning they have an impermeable seed coat that prevents water uptake. In fire-prone ecosystems, this dormancy is presumably broken when the seed coat is cracked due to being exposed to fire or the daily temperature fluctuations found in burnt sites. However,…
Seed enhancement technologies to improve germination and emergence of Australian native Poaceae (Seed Sci. Res.)
Plant Science Research Weekly
One of the most significant limitations in seed-based restoration projects is that some native species exhibit low recruitment in the field. As a result, various seed enhancement technologies (SETs) are being developed to improve germination and seedling emergence by facilitating access to nutrients…
The seed germination spectrum of alpine plants ($) (New Phytol.)
Plant Science Research Weekly
Alpine ecosystems include all the environments found above the treeline, the maximum elevation where trees can grow. These environments are known for their low temperatures, unstable substrates, and short growing seasons. However, while germination studies in this ecosystem can be traced back to…
Distribution of seed dormancy classes across a fire-prone continent: effects of rainfall seasonality and temperature (Ann. Bot.)
Plant Science Research WeeklySeed dormancy controls germination so that it occurs under the most suitable conditions. Different dormancy classes achieve this by allowing germination in response to distinct environmental cues. In fire-prone ecosystems, species with physically dormant (PY) seeds benefit from fire since it breaks their…
Elevation filters seed traits and germination strategies in the eastern Tibetan Plateau (Ecography)
Plant Science Research Weekly
Mountains are extraordinary natural laboratories. They encompass a wide range of environments in a relatively small space, making them ideal for assessing how different environmental variables shape plant traits and communities. Here, Wang and colleagues evaluate how seed functional traits vary along…