Search Results

You are looking at 11 - 20 of 78 items for :

  • "terpenoids" x
  • All content x
Clear All
Free access

Harold E. Nordby and Roy E. McDonald

It has been reported that temperature conditioning (TC), intermittent warming (IW), and film wrapping (FW) reduce chilling injury (CI) on grapefruit. Our objective was to determine if IW, FW, and vapor heat (VH) affected the composition of the epicuticular wax of grapefruit similar to the effects we previously reported with TC. Waxes were analyzed by gas chromatography. C25 to C34 aldehydes and alkanes decreased in all treatments in 5C storage for 21 days. Squalene increased in both the TC (7 days at 21C) and VH (43.5C for 4 hr) treatments. Terpenoids increased in both the TC and IW (4 cycles of 5 days at 5C and 2 days at 21C) treatments, and the greatest increase in C24 aldehyde occurred in the TC treatment. A VH-TC sequential treatment kept C27 to C34 aldehydes at fresh fruit levels following 5C storage. FW did not cause any wax increase. It is possible that these wax changes may have a role in reducing CI.

Free access

Angela Hoffman, Clinton Shock, and Erik Feibert

Taxol® (paclitaxel), an important anticancer agent, is found in many species of yew. As the need for Taxol increases, sustainable sources must be found for this drug. Plants often respond to stress with increased production of terpenoid compounds such as Taxol and related taxanes or hormones such as abscisic acid (ABA). To determine whether water stress would enhance the production and recovery of Taxol from stem clippings, 100 young Taxu×media `Hicksii' shrubs were grown for sustainable production of Taxol from stem clippings for two seasons in the dry climate of the Malheur Experiment Station in Ontario, Ore. Shrubs were grown under minimal, moderate, or severe water stress, and the relationships between taxane content and 1) soil and plant water potentials, 2) percentage of stomatal closure, and 3) ABA content were examined. Severely water-stressed shrubs produced significantly more taxanes and ABA than did the less stressed shrubs. Chemical names used: Taxol; 10-deacetyl baccatin III; baccatin III; 10-deacetyl taxol, cephalomannine; 7-epi; 10-deacetyl taxol; abscisic acid. Taxol is a registered trademark of Bristol-Myers Squibb.

Free access

Céline Jouquand, Craig Chandler, Anne Plotto, and Kevin Goodner

, which gives the unique flavor of wild species ( Ulrich et al., 1997 , 2007 ). Moreover, the terpenoid profile of F . × ananassa is dominated by linalool and nerolidol, whereas monoterpenes such as α-pinene and β-myrcene are mainly produced by wild

Free access

Yifan Jiang, Nan Zhao, Fei Wang, and Feng Chen

contrast, five, five, and six volatiles were detected from the flowers of ‘Las Vegas White’, ‘Las Vegas Pink’, and ‘Las Vegas Purple’, respectively ( Table 1 ). Floral volatiles of ‘Fireworks’ were composed of terpenoids and terpenoid derivatives [(E

Free access

Dansereau Blanche and Charest Pierre-Mathieu

ethological aspects of floral chemistry in pollination. The information, provided on the main classes of fatty acid derivatives, terpenoids, and benze-noids as well as nitrogen- and sulfur-containing compounds emitted from flowers, should be useful for people

Free access

John C. Beaulieu, Maureen A. Tully, Rebecca E. Stein-Chisholm, and Javier M. Obando-Ulloa

Rouseff, 2008b ), and satsuma peels contain significant levels of peel oils ( Choi, 2004 ). With this rapid volatile extraction method, 23 terpenoids, 12 aldehydes, three esters, three alcohols, and three ketones were recovered. The citrus industry has

Full access

Deron Caplan, Mike Dixon, and Youbin Zheng

metabolites may be useful to speculate how drought stress increased cannabinoid yield in the present study. For example, cannabinoids are closely related to some terpenoids that protect plants under stress. Cannabinoids and terpenoids share a similar

Free access

Chin-Mu Chen, Tzu-Yao Wei, and Der-Ming Yeh

Periwinkle [ Catharanthus roseus (L.) G. Don.], a member of the Apocynaceae family, is endemic to Madagascar. This plant species is known for its production of terpenoid indole alkaloids that may be used to treat cardiac diseases and certain tumors

Free access

Xiaoxu Yang, Yinshan Guo, Junchi Zhu, Zaozhu Niu, Guangli Shi, Zhendong Liu, Kun Li, and Xiuwu Guo

regulated and controlled terpenoid metabolism in grapevine ( Battilana et al., 2011 ). The aim of this investigation was to genotype a population of 96 grapevine germplasm accessions using genome-wide molecular markers and to explore the genetic structure

Free access

Chin-Mu Chen and Der-Ming Yeh

program to conserve and protect this species has been established, because it produces secondary metabolites such as terpenoid indole alkaloids that may be used to treat cardiac diseases and certain tumors in mammals ( Favali et al., 2004 ). Catharanthus