The genus Barbarea has emerged as a model for evolution and ecology of plant defense compounds, due to its unusual glucosinolate profile and production of saponins, unique to the Brassicaceae. One species, B. vulgaris, includes two 'types', G-type and P-type that differ in trichome density, and their glucosinolate and saponin profiles. A key difference is the stereochemistry of hydroxylation of...

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...

N-Hydroxyacylnornicotine, newly discovered from fresh plant tissue, was found entirely in the trichome exudate produced at the epidermis of the aerial part of Nicotiana stocktonii. Nicotine and nornicotine, but not N-hydroxyacylnornicotine, were present inside of the trichomes as well as other internal parts of the plant. Only nicotine was found in bleeding sap squeezed from cut roots or stems....

Liquid metal dealloying has emerged as a novel technique to produce topologically complex nanoporous and nanocomposite structures with ultra-high interfacial area and other unique properties relevant for diverse material applications. This process is empirically known to require the selective dissolution of one element of a multicomponent solid alloy into a liquid metal to obtain desirable stru...

Foliar and petiole micro-morphological characteristics of some members the genus Vernonia namely; amygdalina Del. (bitter variety), (non-bitter cinerea (L) Less., galamensis (Cass.) adoensis Sch. Bip. in Jos, Nigeria was investigated to provide additional characters support existing taxonomic information regarding species. Epidermal peels fresh leaves were made transverse sections petioles cut ...

The ANGUSTIFOLIA (AN) gene is required for leaf hair (trichome) branching and is also involved in polarized expansion underlying organ shape. Here we show that the AN gene encodes a C-terminal binding proteins/brefeldin A ADP-ribosylated substrates (CtBP/BARS) related protein. AN is expressed at low levels in all organs and the AN protein is localized in the cytoplasm. In an mutant trichomes, t...

Submitted: Jun 2, 2013; Accepted: Jul 11, 2013; Published: Sep 11, 2013 Abstract: Members of the parasitic family Loranthaceae are known for their destructive nature to host plants as well as for their medicinal value. Taxonomic revision and distribution study of the family in Nigeria was recently carried out. The taxonomic importance of leaf epidermal characters in the family Loranthaceae has ...

Abstract The greenhouse whitefly Trialeurodes vaporariorum is a major threat in tomato cultivation. In grown tomatoes non-trichome based resistance may be better suited than glandular trichome as trichomes interfere with biocontrol, which widely used. Analysis of collection recombinant inbred lines derived from cross between Solanum lycopersicum and galapagense showed to the T. on plants withou...

Victor Kirik, Myeong Min Lee, Katja Wester, Ullrich Herrmann, Zhengui Zheng, David Oppenheimer, John Schiefelbein and Martin Hulskamp Development 132, 1477-1485. The e-press version of the article that was published on the 23rd February contains the incorrect acceptance date. The correct date is 19 January 2005 Both the published print and online versions of this article are correct. We apologi...