Four new compounds, including three new steroids (1-3) and one new sesquiterpene (6), and two new natural products (4-5), as well as three known steroids (7-9) were isolated from the twigs of Turraea pubescens. Compounds 3-5 are C₂₂ steroids isolated from the Meliaceae family for the first time. Their structures were elucidated by extensive NMR and MS analyses. Compound 1 exhibited inhibitory activity against lipopolysaccharide (LPS) induced nitric oxide (NO) production in RAW264.7 cells with an IC₅₀ value of 11.5 μM.
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http://dx.doi.org/10.1016/j.fitote.2013.07.006 | DOI Listing |
is an endangered species due to over-cutting and low natural regeneration in China. Its genetic conservation is of an increasing concern. However, several varieties are recognized according to the leaf and flower traits, which complicates genetic conservation of .
View Article and Find Full Text PDFMitochondrial DNA B Resour
March 2022
State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China.
var. is classified as subgenus of Meliaceae family, which belongs to a large deciduous tree species. It is also a kind of precious timber tree species and has a certain medicinal value.
View Article and Find Full Text PDFPeerJ
May 2021
Jiangxi Provincial Key Laboratory of Silviculture/Collaborative Innovation Center of Jiangxi Typical Trees Cultivation and Utilization, Nanchang, Jiangxi, China.
var. ( in Meliaceae) () is listed as an endangered species, and there are natural regeneration obstacles due to its long-term excessive exploitation and utilization. Arbuscular mycorrhizal fungi (AMF) can produce beneficial effects for plant growth and natural regeneration.
View Article and Find Full Text PDFYing Yong Sheng Tai Xue Bao
April 2018
Jiangxi Agricultural University, Nanchang 330045, China.
To examine the reproduction fitness coefficients and individual-level fitness of Toona ciliata var. pubescens, their sexual reproduction and natural regeneration were investigated during 2006-2016, with four natural populations in Jiulianshan National Reserve as test objects. The results showed that there were only 2-10 trees for the natural populations of T.
View Article and Find Full Text PDFYing Yong Sheng Tai Xue Bao
August 2014
The sap flow and environmental factors, including temperature, water content and water potential of soil, were continuously measured by using an auto-data collection system at the upper and lower slopes of Toona ciliata var. pubescens plantation in July to October, 2012 to investigate the relationships between the sap flow and environmental factors. The results showed that, the trunk sap flow velocity of the two positions both presented a typical single-peak curve, with high values in the daytime and low values in the nighttime.
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