Root hairs are tubular outgrowths that originate from epidermal cells. Exposure of Arabidopsis to cadmium (Cd) and arsenic [arsenite, As(III)] increases root hair density and length. To examine the underlying mechanism, we measured the expression of genes involved in fate determination and morphogenesis of root hairs. Cd and As(III) downregulated TTG1 and GL2 (negative regulators of fate determ...

vegetation is known to increase hillslope stability by reinforcing soil shear resistance. this reinforcement depends on the density and tensile strength of the root systems. this paper presents the results of research carried out in order to evaluate the biotechnical characteristics of the root system of parrotia persica. the profile trenching methods was used to obtaining root area ratio (rar)...

We tested whether a gene regulating nodule number in Medicago truncatula, Super Numeric Nodules (SUNN ), is involved in root architecture responses to carbon (C) and nitrogen (N) and whether this is mediated by changes in shoot-to-root auxin transport. Nodules and lateral roots are root organs that are under the control of nutrient supply, but how their architecture is regulated in response to ...

Gibberellins (GAs) are a class of phytohormones that impact various aspects of plant growth and development (reviewed in Fleet and Sun, 2005). For more than 50 years, GAs have been known for their dramatic impact on plant stature. Inhibition of GA biosynthesis results in dwarfism (Ninnemann et al., 1964), whereas exogenously applied gibberellic acid promotes internodal stem growth (Brian et al....