Optimal operation of greenhouse crops requires an appropriate management of fertigation, especially when the availability and/or the quality of irrigation water are limited and/or there are environmental constraints, such as those derived from Nitrate Directive in Europe. The paper illustrates the main features of a decision support system (DSS) for the fertigation management in soilless cultur...

RhoA controls cleavage furrow formation during cell division, but whether RhoA suffices to orchestrate spatiotemporal dynamics of furrow formation is unknown. In this issue, Wagner and Goltzer (2016. J. Cell Biol http://dx.doi.org/10.1083/jcb.201603025) show that RhoA activity can induce furrow formation in all cell cortex positions and cell cycle phases.

in order to find the most appropriate planting patter and cultivar of grain corn, an experiment was conducted in agriculture research station of jiroft and kahnooj, iran for two years in 2007 and 2008 as a split-plot experiment based on a randomized complete blocks design with three replications. the main plot was planting patter at four levels of normal planting (single-row on one furrow), dou...

Dividing cells need to coordinate the separation of chromosomes with the formation of a cleavage plane. There is evidence that microtubule bundles in the interzone region of the anaphase spindle somehow control both the location and the assembly of the cleavage furrow [1-3]. A microtubule motor that concentrates in the interzone, MKLP1, has previously been implicated in the assembly of both the...

Signaling by the centrosomal asters and spindle midzone coordinately directs formation of the cytokinetic furrow. Here, we explore the contribution of the asters by analyzing the consequences of altering interaster distance during the first cytokinesis of the Caenorhabditis elegans embryo. Delaying aster separation, by using TPXL-1 depletion to shorten the metaphase spindle, leads to a correspo...

Radixin is a barbed end-capping actin-modulating protein which was first identified in isolated cell-to-cell adherens junctions from rat liver (Tsukita, Sa., Y. Hieda, and Sh. Tsukita, 1989. J. Cell Biol. 108:2369-2382). In the present study, we have analyzed the distribution of radixin in dividing cells. For this purpose, an mAb specific for radixin was obtained using chicken gizzard radixin a...

The initiation of furrow formation is disrupted when microtubule elongation to the cell surface is inhibited either by promoting microtubule disassembly with hydrostatic pressure or by stabilizing the mitotic astral microtubules with taxol. The pressure studies confirmed Rappaport's earlier observation that stimulation of furrow formation is produced by a pair of asters and does not require chr...

Events in the morphogenetic furrow set the stage for all subsequent compound eye development in Drosophila. The periodic pattern of the adult eye begins in the furrow with the spaced initiation of ommatidial rudiments, the preclusters. A wave of mitosis closely follows the furrow. A cell-by-cell analysis reveals details of these events. Early stages of ommatidial assembly can be resolved using ...

Formation of the first cleavage furrow in the telolecithal egg of Loligo was studied with the electron microscope . Before the actual furrow forms, a dense filamentous band develops below the plasma membrane from membrane-bounded dense bodies which appear to be Golgi-derived . The egg surface is thrown into a number of longitudinal folds which parallel the furrow and eventually become incorpora...