linear furanocoumarins are toxic compounds synthesized by plants. these toxic natural products are usually found in the fruits of umbelliferae. heracleum persicum desf. ex fischer is an iranian aromatic medicinal plant from umbelliferae which their fruits are used as flavoring agent in food products. because of the wide usage of the fruits of h. persicum it was decided to do a phytochemical stu...

Crambin, a hydrophobic plant seed protein that exhibits sequence homology to membrane-active plant toxins, was incorporated into phospholipid vesicles. Circular dichroism spectroscopy indicates that its structure in vesicles is nearly identical to its structure in 60% ethanol solution, the solvent from which the protein was crystallized. The secondary structure predicted from the circular dichr...

Plant diversity is believed to govern animal community structure, yet few studies have tested this relationship. We manipulated plant species diversity and composition (2 seagrasses and 3 seaweeds) and measured the abundance, diversity, and biomass of plant-associated macroinvertebrates in a temperate, estuarine seagrass community. Animal diversity was weakly but positively related to plant div...

Leaves intercepted by bromeliads become an important energy and matter resource for invertebrate communities, bacteria, fungi, and the plant itself. The relationship between bromeliad structure, defined as its size and complexity, and accumulated leaf litter was studied in 55 bromeliads of Tillandsia turneri through multiple regression and the Akaike information criterion. Leaf litter accumulat...

Reports of positive or neutral effects of grazing on plant species richness have prompted calls for livestock grazing to be used as a tool for managing land for conservation. Grazing effects, however, are likely to vary among different response variables, types, and intensity of grazing, and across abiotic conditions. We aimed to examine how grazing affects ecosystem structure, function, and co...

The capacity of LiDAR and Unmanned Aerial Vehicles (UAVs) to provide plant height estimates as a high-throughput plant phenotyping trait was explored. An experiment over wheat genotypes conducted under well watered and water stress modalities was conducted. Frequent LiDAR measurements were performed along the growth cycle using a phénomobile unmanned ground vehicle. UAV equipped with a high res...