The leaves of angiosperms contain highly complex venation networks consisting of recursively nested, hierarchically organized loops. We describe a new phenotypic trait of reticulate vascular networks based on the topology of the nested loops. This phenotypic trait encodes information orthogonal to widely used geometric phenotypic traits, and thus constitutes a new dimension in the leaf venation...

Control of fungal pathogens is mainly addressed by chemically synthesized fungicides which, after a prolonged use, produce environment pollution and develop resistance. In this context, endophytes have been recognized as potential biocontrolers and also potential source of antifungal metabolites. Therefore, as part of our research on phytopathogen controllers, 355 fungal endophytes were isolate...

ABSTRACT. Dacryodes klaineana is used in traditional medicine for the treatment of painful menstruation; tachycardia and cough. The study aims to evaluate antioxidant antimicrobial properties plant. extract fractions D. were screened their effects using 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing power (FRAP), total phenolic contents (TPC) assay methods. activity plant was evaluated a...

Bois fossiles du Miocène inférieur Myanmar (formation de Natma): implications paléoenvironnementales et biogéographiques. Le registre botanique fossile (Birmanie) est faiblement documenté malgré son importance pour comprendre l'évolution des écosystèmes mousson au cours temps géologiques. Nous décrivons ici 20 taxa bois issus 30 specimens silicifiés la Formation Natma (Myanmar central) datant t...