Land plants lacking roots generally have uniseriate (one-cell-thick), filamentous rhizoids that assume a similar function. The first root to develop, in the embryo, is termed the radicle. If the radical continues to develop after embryo growth, it is known as the primary root. Additional ...
Explain and give examples of cellular transport such as osmosis, active transport, simple diffusion and facilitated diffusion. How do cells in the epidermis obtain nutrients and oxygen? What is the function of the hair cells in the organ of Corti?
These genes are thought to encode proteins that function more efficiently on grass cell walls. The proximal promoter regions of two orthologous EXPB genes from rice (Oryza sativa; OsEXPB5) and barley (Hordeum vulgare; HvEXPB1) included RHE motifs. These promoters could direct root hair-...
Esseling J, de Ruijter N, Emons AMC (2000) The root hair actin cytoskeleton as backbone, highway, morphogenetic instrument and target for signalling. Root Hairs Cell Mol Biol Google Scholar Esseling JJ, Lhuissier FGP, Emons AMC (2004a). A nonsymbiotic root hair tip growth phenotype in du...
A root hair is composed of a single-cell that is developed as a tubular outgrowth of a root epidermal cell and expanded by polar growth (Campanoni and Blatt, 2007; Grierson et al., 2014). Root hairs perform multiple key functions in the plant growth and developmental process, notable among...
3. something resembling or suggesting the root of a plant in position or function. 4. the embedded or basal portion of a hair, tooth, nail, nerve, etc. 5. the fundamental or essential part. 6. the source or origin of a thing: the root of all evil. 7. a person or family as...
OsAUX1promotes root hair growth at low external P levels.a9-day-old WT, osaux1-1;1andosaux1-1;3seedlings were grown for 6 days in hydroponics at three different P concentrations. Scale bar 1 mm.bQuantitation of RH length in WT, osaux1-1;1andosaux1-1;3mutants reveal low P. ...
Moving from the cell to the whole-organ level, we next asked if BL modulation of cell geometry is correlated with radial growth of the meristem. To address this question, radial growth of the different tissues along the meristem was quantified as a function of distance from the QC (as deter...
From the expression pattern and mutant phenotypes, a function for these genes in root-hair mor- phogenesis was deduced. Whole root and cell type-specific alternative splicing Using the in-house RACKJ software package, an algorithm specifically developed to analyze splice junctions and gen- ...
NO is also involved in root hairgrowth and development. The root epidermis is composed of two cell types: trichoblasts (or hair cells) and atrichoblasts (nonhair cells). InArabidopsis, as well as in lettuce, the NO scavenger cPTIO blocked the auxin-induced root hair elongation indicating tha...