root hair


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root hair

n.
A thin hairlike outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil.

root hair

a hair-like outgrowth from the epidermis of roots. Root hairs occur in large numbers in a zone behind the growing tip, are short-lived, and greatly increase the absorbing area of the root.
References in periodicals archive ?
In two separate studies it was observed that arabidiopsis develops unusually short root hairs as they lack the enzymes capable of catalyzing the formation of reactive oxygen species (ROS), which is needed for the normal elongation of root hairs in Arabidopsis [5, 15].
If all goes well, the little root hairs kink into hooks and eventually curl around the bacteria.
Organic anion release can also increase the availability of soil P (see later discussion); however, the location of organic anion release differs between the 2 mechanisms (Barcelo and Poschenrieder 2002)--for Al-tolerance the organic anions are released from the root tip, and for P deficiency the organic anions are normally released from the root hair zone or from proteoid roots.
shows the absence of root hair after all treatments that can be due to the stress and soon oldness.
PCR enabled us to quickly determine which sequences were most highly expressed in root hair cells, where sorgoleone is made, compared with other parts of the plant," says Baerson.
It has been shown that the root hairs of proteoid roots adhere to sand grains, rocks, charcoal, humus particles, and raw litter (Lamont 1982).
In a few other species, however, root hair formation occurs only in certain cells that are specialized early in epidermis differentiation (Cormack, 1949, 1962).
Root hairs are extremely fine individual cells that grow out of a plant's root, greatly increasing its surface area to collect water, essential minerals and nutrients.
Auxin is not delivered to root hair cells directly, but via the cells next door which act as canals through which the auxin is transported.
This generally means a nice fluffy soil stuffed with organic material and different sized particles - some larger to allow excess water to drain away, and some smaller ones that encourage water to seep close to root hairs.