Suberin and wax deposited in the cork (phellem) layer of the periderm form the lipophilic barrier that protects mature plant organs. Periderm lipids have been widely studied for their protective function with regards to dehydration and for how they respond to environmental stresses and wounding. However, despite advances in the biosynthetic pathways of suberin and associated wax, little is know...

Multi proxy records relating to climate and vegetation have been obtained for a core spanning the last 40 kyr from the Heqing Lake Basin (26 N, 100 E; 2200 m asl.), Yunnan Province of southwestern China. Compound-specific carbon isotope records for the vascular plant leaf wax hydrocarbons, the C23–C33 n-alkanes, and for the algal hydrocarbons, the C23 and C25 n-alkenes and a C30 cyclobotryococc...

In land plants, very-long-chain (VLC) alkanes are major components of cuticular waxes that cover aerial organs, mainly acting as a waterproof barrier to prevent nonstomatal water loss. Although thoroughly investigated, plant alkane synthesis remains largely undiscovered. The Arabidopsis thaliana ECERIFERUM1 (CER1) protein has been recognized as an essential element of wax alkane synthesis; neve...

Nepenthes pitcher plant species differ in their prey capture strategies, prey capture rates, and pitcher longevity. In this study, it is investigated whether or not interspecific differences in nutrient sequestration strategy are reflected in the physiology and microstructure of the pitchers themselves. Using a non-invasive technique (MIFE), ion fluxes in pitchers of Nepenthes ampullaria Jack, ...

the potential indoor air impacts of burning candles have drawn increased attention in recent years.  burning paraffin waxes itself, regardless to wick and the essence, produce some allergens and even carcinogenic compounds. further biorefining of petroleum paraffin wax with proper bacteria is one of the proposed resolutions to decrease the health threat. therefore in this study iranian heavy cr...

Land plant aerial organs are covered by a hydrophobic layer called the cuticle that serves as a waterproof barrier protecting plants against desiccation, ultraviolet radiation, and pathogens. Cuticle consists of a cutin matrix as well as cuticular waxes in which very-long-chain (VLC) alkanes are the major components, representing up to 70% of the total wax content in Arabidopsis (Arabidopsis th...

The chem ical com position and m orphology of leaf surface waxes of Solanum tuberosum were analysed using FT -IR . G L C and MS studies. T here is a predom inance of sa tu rated and long chained com ponents resulting in a crystalline wax layer in the form of ribbons, n -alkanes are a m ajo r constituen t with C 3I being p rom inen t. Wax esters and 5-alcohols form the o th e r m ajor com ponent...

Leaves of a number of Ericaceous plants have a thin epicuticular layer that consists mostly of triterpenes. In Kalmia angustifolia, K. latifolia and K polifolia as well as in Gaultheria procumbens and G. shallon this material also contains trace amounts of flavonoid aglycones. In Kalmia they are the 3-OMe-derivatives of four C-methyl flavones reported previously as the typical leaf-wax flavonoi...