Oxygen stress on age-stage, two-sex life tables and transcriptomic response of diamondback moth (Plutella xylostella).

Elucidating the genetic basis of local adaption is one of the important tasks in evolutionary biology. The Qinghai-Tibet Plateau has the highest biodiversity for an extreme environment worldwide, and provides an ideal natural laboratory to study adaptive evolution. The diamondback moth (DBM), Plutella xylostella, is one of the most devastating pests of the global Brassica industry.

Reduction of NO by H Catalyzed by Keggin-Type Phosphotungstic Acid Supported Single-Atom Catalysts: An Insight from Density Functional Theory Calculations.

In the present paper, the mechanisms of NO reduction by H were systemically examined over various polyoxometalate-supported single-atom catalysts (SACs) M/PTA (M = Fe, Co, Mn, Ru, Rh, Os, Ir, and Pt; PTA = [PWO]) by means of density functional theory calculations. Among these M/PTA SACs, Os/PTA SAC possesses high activity for NO reduction by H with a relatively low rate-determining barrier. The favorable catalytic pathway involves the first and second NO decomposition over the Os/PTA SAC and hydrogenation of the key species after the second NO decomposition.

Improving the acetylcholinesterase inhibitory effect of Illigera aromatica by fermentation with Clonostachys rogersoniana.

Illigera aromatica was fermented by Clonostachys rogersoniana. The acetylcholinesterase (AChE) inhibitory effects of unfermented and fermented I. aromatica revealed that C.

[C_(19)-diterpenoid alkaloids from Aconitum austroyunnanense].

Eight C_(19)-diterpenoid alkaloids( 1-8) were isolated from the ethyl acetate soluble fraction of 95% ethanol extract of the ground roots of Aconitum austroyunnanense through various column chromatographies on silica gel,ODS,Sephadex LH-20 and MCI gel.Their structures were elucidated as 14α-benzoyloxy-13β,15α-dihydroxy-1α,6α,8β,16β,18-pentamethoxy-19-oxoaconitan( 1),N-deethylaconitine( 2),spicatine B( 3),leucanthumsine A( 4),acofamine B( 5),macrorhynine B( 6),aconitilearine( 7),and ambiguine( 8) based on their chemical and physicochemical properties and spectroscopic data. Compound 1 was a new compound and alkaloids 2-8 were isolated from this plant for the first time.

Application of a proton quantitative nuclear magnetic resonance spectroscopy method for the determination of actinodaphnine in Illigera aromatica and Illigera henryi.

Illigera aromatica S. Z. Huang et S.

Simultaneous determination of alkaloids dicentrine and sinomenine in Stephania epigeae by H NMR spectroscopy.

Stephania epigaea Lo is an important herbal medicine used as antiphlogistic and analgesic drugs. Its major components are dicentrine (1) and sinomenine (2). In the present study, a rapid, accurate, and precise method for simultaneous quantitation of dicentrine (1) and sinomenine (2) in S.

[Amaryllidaceae alkaloids from Lycoris radiata].

Three aporphine-type alkaloids (1-3), three lycorine-type alkaloids (4-6), two crinane type alkaloids (7, 8) and one phenanthridine-type alkaloid (9) were isolated from the chloroform soluble fraction of 70% ethanol extract of the bulbs of Lycoris radiata through various column chromatographies over silica gel, ODS, Sephadex LH-20 and MCI. Their structures were elucidated as (+)-N-methoxylcarbonyl-1,2-methylenedioxyl-isocorydione (1), isocorydione (2), 8-demethyl-dehydrocrebanine (3), (+)-3-hydroxy-anhydrolycorine N-oxide (4), vasconine (5), pancratinine D (6), yemenine A (7), 11-O-acetylhaemanthamine (8), and 5,6-dihydro-5-methyl-2-hydroxyphenanthridine (9) based on their chemical and physicochemical properlies and spectroscopic data. Compound 1 was a new compound and alkaloids 2-9 were isolated and identified from this plant for the first time.

[Terpenoids isolated from Viburnum ternatum].

Four iridoids (1-4), five iridoid glucosides (5-9), and three triterpenoids (10-12) were isolated from the ethyl acetate soluble fraction of 70% Me2CO extract of the aerial parts of Viburnum ternatum through various column chromatographies over silica gel, ODS, Sephadex LH-20 and MCI. Their structures were elucidated as ternatumin A (1), 2,9-dioxatricyclo[4.3.

Biomedical molecular of woody extractives of Cunninghamia Lanceolata biomass.

Extractives, important compounds from wood, provide abundant resources for woody medicine. In this study, the three extractives from Cunninghamia lanceolata wood were removed by method of three-stage extraction with alcohol, petroleum ether, and alcohol/petroleum ether and their chemical components were analyzed by gas chromatography-mass spectrometry (GC-MS). Thirteen chemical components were discovered in the first-stage extractives, including: 4-((1e)-3-hydroxy-1-propenyl)-2-methoxyphenol (36.