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Phenylpropanoids and Lignanoids from Euonymus acanthocarpus
Jia Xian Zhu,Hui Zi Jin,Jie Ren,Jiang Jiang Qin,Xiangrong Cheng,Qi Zeng,Fei Zhang,Shi Kai Yan,Wei Dong Zhang 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.10
A new phenylpropanoid derivative (1), along with five phenylpropanoids (2-6), two monoepoxy lignans (8-9), one bisepoxy lignan (10), two cyclolignans (11-12), six neolignans (7, 13-17), two mixed lignan-neolignans (18-19), two lignan glycosides (20-21), and four flavonolignans (22-25), were isolated from the stems and twigs of Euonymus acanthocarpus. Compounds 2-3, 6-8, 12,and 14-25 were obtained from Celastraceae family for the first time, and compounds 5 and 9 were isolated from Euonymus genus for the first time. All the compounds were tested for cytotoxicity against SK-OV-3 and MCG-803 human tumor cell lines. Compounds 3, 10, 12, and 18 showed weak cytotoxicity against SK-OV-3 cell line, and compounds 3-4, 10-13, and 19 showed weak cytotoxicity against MCG-803 cell line.
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Li-Jun Hu,Cheng Liu,Zi-Xian Zeng,Guang-Rong Li,Xiao-Jin Song,Zu-Jun Yang 한국유전학회 2012 Genes & Genomics Vol.34 No.1
Thinopyrum elongatum serves as an excellent gene pool for wheat improvement. Genes for resistance to many biotic and abiotic stresses have been transferred from Th. elongatum to wheat through chromosome manipulation. For breeding programs,molecular markers enable screening of a large number of genotypes for alien chromosome introgressions. The main objective of the present study was to develop and characterize EST (expressed sequence tags) and PLUG (PCR-based Landmark Unique Gene) markers that can distinguish Th. elongatum chromatin from the wheat genomes. A total of 258 mapped EST primer pairs and 46 PLUG primer pairs were tested on DNA from wheat Chinese Spring (CS) and CS-Th. elongatum addition lines. The results showed that 43 primer pairs could be effectively mapped to specific Th. elongatum chromosomes. Twenty-two of the 43 markers displayed similar homoeologous chromosome locations to hexaploid wheat. Nine markers mapped to different linkage groups between wheat and Th. elongatum, while 12 makers mapped on two or three different Th. elongatum chromosomes. A comparison of molecular marker locations indicated that Th. elongatum genome was closely related to the D genome of wheat, and chromosome rearrangements and duplication had occurred in Th. elongatum and the wheat genomes. The markers will be useful in comparative gene mapping, chromosome evolutionary analysis, and gene introgression for wheat improvement using Th. elongatum accessions as gene donors.
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