Resupination is the movement of floral buds that leads to flowers turning upside down. We tested the reproductive functioning of this characteristic in the native legume Chamaecrista nictitans and found that it causes pollen to be deposited in particular portions of pollinators’ bodies, improving pollination. Image by Natan Messias Almeida and Paulo Estêvão Araújo Vilaça Júnior.

This study explored how Parkinsonia praecox responds to salinity and drought during germination and early growth. It found that germination was highest in distilled water but decreased with increased salinity and drought. Germination was more sensitive to drought than to salinity. Interestingly, seeds exposed to drought had better germination rates beyond −1.2 MPa compared to salt-treated seeds. This suggests P. praecox can grow in arid, saline conditions, shedding light on its geographical occurrence and distribution. Photograph by Valeria Villarreal.