Susceptibility of Plants to Vascular Disruption by Macromolecules

Susceptibility of plants to vascular disruption by macromolecules.

The xylem of alfalfa (Medicago sativa L.) was found to be susceptible to vascular obstruction by picomole quantities of dextrans. Not all parts of the xylem were equally susceptible to this plugging. The quantity of dextran of 2 x 10(6) molecular weight required to stop vascular flow was 8 picomoles in petiole junctions and 0.4 picomole in leaflet veins. Vascular flow through stems was greatly ...

STUDY OF VASCULAR PLANTS OF BAMU NATIONAL PARK (FARS PROVINCE)

In this research, vascular plants of Bamu National Park (48000 ha.) situated in Fars province were studied. Analyses of all collected plants (450 species) showed that on account of climatic conditions, 94% of them were flowering in spring, also hemicryptophytes and therophytes possess abundant growth form with 39.6% and 23.5%, respectively. Phytogeographically, Irano-Turanian  elements comprise...

Disruption of OsYSL15 leads to iron inefficiency in rice plants.

Uptake and translocation of metal nutrients are essential processes for plant growth. Graminaceous species release phytosiderophores that bind to Fe(3+); these complexes are then transported across the plasma membrane. We have characterized OsYSL15, one of the rice (Oryza sativa) YS1-like (YSL) genes that are strongly induced by iron (Fe) deficiency. The OsYSL15 promoter fusion to beta-glucuron...

Disruption of Circadian Rhythm in Mice Increases Susceptibility to Osteoarthritis

Disruption of cardiac cholinergic neurons enhances susceptibility to ventricular arrhythmias

The parasympathetic nervous system plays an important role in the pathophysiology of atrial fibrillation. Catheter ablation, a minimally invasive procedure deactivating abnormal firing cardiac tissue, is increasingly becoming the therapy of choice for atrial fibrillation. This is inevitably associated with the obliteration of cardiac cholinergic neurons. However, the impact on ventricular elect...