Ectopic Expression of Anthocyanin 5-O-Glucosyltransferase in Potato Tuber Causes Increased Resistance to Bacteria
摘要:
The principal goal of this paper was to investigate the significance of anthocyanin 5-O-glucosyltransferase (5-UGT) for potato tuber metabolism. The ectopic expression of a 5-UGT cDNA in the tuber improved the plant's defense against pathogen infection. The resistance of transgenic lines against Erwinia carotovora subsp. carotovora was about 2-fold higher than for nontransformed plants. In most cases the pathogen resistance was accompanied by a significant increase in tuber yield. To investigate the molecular basis of transgenic potato resistance, metabolic profiling of the plant was performed. In tuber extracts, the anthocyanin 3,5-O-substituted level was significantly increased when compared to that of the control plant. Of six anthocyanin compounds identified, the highest quantity for pelargonidin 3-rutinoside-5-glucoside acylated with p-coumaric acid and peonidin 3-rutinoside-5-glucoside acylated with p-coumaric acid was detected. A significant increase in starch and a decrease in sucrose level in transgenic tubers have been detected. The level of all other metabolites (amino acids, organic acids, polyamines, and fatty acids) was quite the same as in nontransformants. The plant resistance to bacterial infection correlates with anthocyanin content and sucrose level. The properties of recombinant glucosyltransferase were analyzed in in vitro experiments. The enzyme kinetics and its biochemical properties were similar to those from other sources.
A process is provided for producing anthocyanidins of formula III
wherein m represents an integer from 1 to 3, and X⁻ represents an anion, which involves reducing a protected flavonol of formula
where each R⁴ represents a C₁#SB-#₁₀
hydrocarbyl group and m is 1 to 3 and converting OR⁴ groups to hydroxy groups.
COMPOSITIONS INCLUDING ANTHOCYANIN OR ANTHOCYANIDIN FOR THE PREVENTION OR TREATMENT OF ARTICULAR CARTILAGE-ASSOCIATED CONDITIONS
申请人:Johnson Lanny L.
公开号:US20100196331A1
公开(公告)日:2010-08-05
Methods of treating an arthritic joint of a subject, including administering a pharmaceutical composition by injection into the arthritic joint, wherein the composition includes an anthocyanin or anthocyanidin, glucose, and a pharmaceutically acceptable carrier.
STABILIZATION OF HYDROXYLAMINE CONTAINING SOLUTIONS AND METHOD FOR THEIR PREPARATION
申请人:Lee Wai Mun
公开号:US20090112024A1
公开(公告)日:2009-04-30
The invention relates to the use of amidoximes for prevention of or stabilization of hydroxylamine compounds against undesired decomposition.
本发明涉及将酰胺肟用于预防或稳定羟基胺化合物,防止其不受控分解。
New derivatives of resveratrol
申请人:Mattarei, Andrea
公开号:EP2774915A1
公开(公告)日:2014-09-10
A novel class of derivatives of resveratrol is provided which have favourable physico-chemical properties when compared with resveratrol itself. It is characterized by the presence of three carbamate functions, in which resveratrol is the oxygen-linked moiety, while the nitrogen atom carries a substituent conferring desirable characteristics to the molecule. These new compounds are especially suitable as precursors (prodrugs) and vehicles of resveratrol in preparations used as dietary integrators or in pharmaceutical compositions: they are stable towards oxidative degradation allowing for long shelf lifetimes and have suitable reactivity to regenerate and deliver resveratrol under physiological conditions.
[EN] SMALL MOLECULE COMPOUNDS TO SUPPORT HEALTHY HUMAN AGING<br/>[FR] COMPOSÉS À PETITES MOLÉCULES POUR FAVORISER UN VIEILLISSEMENT HUMAIN SAIN
申请人:CARDAX PHARMA INC
公开号:WO2018183353A1
公开(公告)日:2018-10-04
Disclosed herein are methods of activating expression of the FOXO3 gene in a subject comprising administering to a subject small molecule compound (such as astaxanthin and/or one or more astaxanthin derivatives), or pharmaceutically acceptable salts thereof, in an amount sufficient to at least partially increase the amount of FoxO3 expressed in the subject.