Hairs and Glandular Hairs of Plants, Their Forms and Uses
نویسندگان
چکیده
منابع مشابه
Secreting glandular trichomes: more than just hairs.
Secreting glandular plant trichome types which accumulate large quantities of metabolic products in the space between their gland cell walls and cuticle permit the plant to amass secretions in a compartment that is virtually outside the plant body. These structures not only accumulate and store what are often phytotoxic oils but they position these compounds as an apparent first line of defense...
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How is shape controlled at the level of the smallest unit of an organism — the individual cell? A powerful system for addressing this question in plants is provided by the leaf trichomes of the model plant Arabidopsis thaliana [1,2]. Trichomes are unicellular hairs originating from epidermal cells (Figure 1a), which are up to 500 μm long and 50 μm wide at their base, and contain sixteen times m...
متن کاملRoot hairs.
Roots hairs are cylindrical extensions of root epidermal cells that are important for acquisition of nutrients, microbe interactions, and plant anchorage. The molecular mechanisms involved in the specification, differentiation, and physiology of root hairs in Arabidopsis are reviewed here. Root hair specification in Arabidopsis is determined by position-dependent signaling and molecular feedbac...
متن کاملSplitting hairs ∗
Besides conjoining an assertion into the common ground (Stalnaker 1978), another kind of move that we often propose and accept in discourse is to change our notion of what is a thing and what is the same thing. For example, depending on how a conversation goes, in the middle of it we might start treating ‘a’ and ‘A’ as different letters, while preserving our common knowledge that it is a vowel....
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Differential diagnosis of trichotillomania is often difficult in clinical practice. Trichoscopy (hair and scalp dermoscopy) effectively supports differential diagnosis of various hair and scalp diseases. The aim of this study was to assess the usefulness of trichoscopy in diagnosing trichotillomania. The study included 370 patients (44 with trichotillomania, 314 with alopecia areata and 12 with...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1878
ISSN: 0003-0147,1537-5323
DOI: 10.1086/272096