Chloride Influx into Citrus Leaf Slices

Influx into Fly Photoreceptors

Ion-selective calcium microelectrodes were inserted into the compound eyes of the wild-type sheep blowfly Lucilia or into the retina of the no steady state (ms) mutant of Lucilia. These electrodes monitored light-induced changes in the extracellular concentration of calcium (A[Ca2+]o) together with the extracellularly recorded receptor potential. Prolonged dim lights induced a steady reduction ...

Methylammonium Transport in Phaseolus vulgaris Leaf Slices.

Methylammonium (as a nonmetabolized analog of ammonium) transport was studied in leaf slices of Phaseolus vulgaris L. var. ;Hawkesbury Wonder.' The relationship of influx to external pH (6.0-10.5) shows that the influx at low external pH is a larger fraction of that at high external pH than would be expected from the pK(alpha) of methylammonium and the assumption that only CH(3)NH(2) is enterin...

Chloride influx aggravates Ca2+-dependent AMPA receptor-mediated motoneuron death.

AMPA receptor-mediated excitotoxicity has been implicated in the pathogenesis of stroke, neurotrauma, epilepsy, and many neurodegenerative diseases such as motoneuron disease. We studied the role of Cl- in AMPA receptor-mediated Ca2+-dependent excitotoxicity in cultured rat spinal motoneurons. Using the gramicidin perforated patch-clamp technique, the intracellular Cl- concentration could be ca...

Effects of some salts and acids on citrus leaf abscission

Citrus Bent Leaf Viroid from Fars Province of Iran

Background and Aims: CBLVd has been reported from northern of Iran previously. The aim of this study was evaluating new viroid variant from asymptomatic citrus trees of Fars province and comparing with its other isolates. Materials and Methods: In this study a number of citrus trees without symptoms were sampled and subjected to RNA extraction followed by RT-PCR, cloning and sequencing of ...