Leaf trichomes may protect plants against herbivorous insects, and may increase tolerance to drought and UV-radiation. The perennial herb Arabidopsis lyrata (Brassicaceae) is polymorphic for trichome production and occurs in a glabrous and trichome-producing form. In addition, there is quantitative variation in trichome density among trichome-producing plants. To examine the genetic basis of gl...

Artemisia is one of the plants that can be used as an alternative medicine for malaria. The plant contains secondary metabolites in form artemisinin compounds function antimalarials. One efforts done to increase growth annua. by using a regulator gibberellins (GA3). Using Randomized Block Factorial Designs (RBFD) with first factor being concentration 50 mg.L-1 (K1), mg.L-1(K2), 150 (K3), 200 (K...

We are using trichome (hair) morphogenesis as a model to study how plant cell shape is controlled. During a screen for new mutations that affect trichome branch initiation in Arabidopsis, we identified seven new mutants that show a reduction in trichome branch number from three branches to two. These mutations were named furca, after the Latin word for two-pronged fork. These seven recessive mu...

The formation and storage of plant natural products such as phenylpropanoids, terpenoids and alkaloids are dynamic and complex processes that involve multiple subcellular compartments and cell types. Evidence is emerging to show that consecutive enzymes of phenylpropanoid and flavonoid biosynthesis are organized into macromolecular complexes that can be associated with endomembranes, that monot...

Flavonoids and terpenoids are derived from distinct metabolic pathways but nevertheless serve complementary roles in mediating plant interactions with the environment. Here, we show that glandular trichomes of the anthocyanin free (af) mutant of cultivated tomato (Solanum lycopersicum) fail to accumulate both flavonoids and terpenoids. This pleiotropic metabolic deficiency was associated with l...

Salinity is a major abiotic factor affecting plant growth and secondary metabolism. However, no information is available about its effects on Schizonepeta tenuifolia Briq., a traditional Chinese herb. Here, we investigated the changes of plant growth, antioxidant capacity, glandular trichome density, and volatile exudates of S. tenuifolia exposed to salt stress (0, 25, 50, 75, 100 mM NaCl). Res...

Glandular secreting trichomes (GSTs) are called biofactories because they are active in synthesizing, storing and secreting various types of plant secondary metabolites. As the most effective drug against malaria, artemisinin, a sesquiterpene lactone is derived from GSTs of Artemisia annua. However, low artemisinin content (0.001%~1.54% of dry weight) has hindered its wide application. We inves...

Background: Leaf epidermis and indumenta structure of M. annua were studied with the aid microscopy for easy identification  plant materials when in fragments crude drug search. Stomata trichome morphology appear significant identifying species. Paracytic anomocytic stomatal types are basic but polocytic is additional on abaxial surface theepidermis.The overwhelming reports folkloric uses ...