Fei Lu, Jetty S. S. Ammiraju, Abhijit Sanyal, Shengli Zhang, Rentao Song, Jinfeng Chen, Guisheng Li, Yi Sui, Xiang Song, Zhukuan Cheng, Antonio Costa de Oliveira, Jeffrey L. Bennetzen, Scott A. Jackson, Rod A. Wing and Mingsheng Chen. Comparative sequence analysis of MONOCULM1-orthologous regions in 14 Oryza genomes.PNAS.DOI:10.1073/pnas. [中国科学院遗传与发育生物学研究所]
<meta name="keywords" content="Fei Lu, Jetty S. S. Ammiraju, Abhijit Sanyal, Shengli Zhang, Rentao Song, Jinfeng Chen, Guisheng Li, Yi Sui, Xiang Song, Zhukuan Cheng, Antonio Costa de Oliveira, Jeffrey L. Bennetzen, Scott A. Jackson, Rod A. Wing and Mingsheng Chen. Comparative sequence analysis of MONOCULM1-orthologous regions in 14 Oryza genomes.PNAS.DOI:10.1073/pnas. ,FeiLu,JettySSAmmiraju,AbhijitSanyal,ShengliZhang,RentaoSong,JinfengChen,GuishengLi,YiSui,XiangSong,ZhukuanCheng,AntonioCostadeOliveira,JeffreyLBennetzen,ScottAJackson,RodAWingandMingshengChenComparativesequenc,中国科学院遗传与发育生物学研究所研究生教育网,遗传,发育,生物学,研究所,中科院,中国科学院,奥运村园区,研究生教育">
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Comparative sequence analysis of MONOCULM1-orthologous regions in 14 Oryza genomes Fei Lu, Jetty S. S. Ammiraju, Abhijit Sanyal, Shengli Zhang, Rentao Song, Jinfeng Chen, Guisheng Li, Yi Sui, Xiang Song, Zhukuan Cheng, Antonio Costa de Oliveira, Jeffrey L. Bennetzen, Scott A. Jackson, Rod A. Wing and Mingsheng ChenPNASAbstract Comparative genomics is a powerful tool to decipher gene and genome evolution. Placing multiple genome comparisons in a phylogenetic context improves the sensitivity of evolutionary inferences. In the genus Oryza, this comparative approach can be used to investigate gene function, genome evolution, domestication, polyploidy, and ecological adaptation. A large genomic region surrounding the MONOCULM1 (MOC1) locus was chosen for study in 14 Oryza species, including 10 diploids and 4 allotetraploids. Sequencing and annotation of 18 bacterial artificial chromosome clones for these species revealed highly conserved gene colinearity and structure in the MOC1 region. Since the Oryza radiation about 14 Mya, differences in transposon amplification appear to be responsible for the different current sizes of the Oryza genomes. In the MOC1 region, transposons were only conserved between genomes of the same type (e.g., AA or BB). In addition to the conserved gene content, several apparent genes have been generated de novo or uniquely retained in the AA lineage. Two different 3-gene segments have been inserted into the MOC1 region of O. coarctata (KK) or O. sativa by unknown mechanism(s). Large and apparently noncoding sequences flanking the MOC1 gene were observed to be under strong purifying selection. The allotetraploids Oryza alta and Oryza minuta were found to be products of recent polyploidization, less than 1.6 and 0.4 Mya, respectively. In allotetraploids, pseudogenization of duplicated genes was common, caused by large deletions, small frame-shifting insertions/deletions, or nonsense mutations.
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&&文章搜索：Surface Dilational Properties of N-Acyltaurate Amphiphiles with Aromatic Side Chains _Acta Phys Chim Sin
ISSN CN 11-1892/O6CODEN WHXUEU
10.3866/PKU.WHXB &&&&&&&&
Surface Dilational Properties of N-Acyltaurate Amphiphiles with Aromatic Side Chains
LI Zhen-Quan, ZHANG Lei, YAN Feng, , ZHAO Sui, YU Jia-Yong Geological Research Institute of Shengli Oilfield Co. Ltd., SINOPEC, Dongying 257015, Shandong Province, P. R. China|Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
The dynamic dilational viscoelasticity properties of N-2-(phenoxy)-tetradecanolytaurinate (12+B-T) and N-2-(4-ethylphenoxy)-tetradecanolytaurinate (12+2B-T) at the air/water interface were investigated by drop shape analysis and their foam properties were measured. The influence of time, dilational frequency, and bulk molar concentration on the surface dilational modulus and phase angle were investigated. A molecular interaction controls the nature of the film's adsorption at the lower concentration range and the filmis elastic in nature. At a higher concentration range, a diffusion exchange process controls the dynamic dilational properties and the surface film shows remarkable viscoelasticity. The addition of one ethyl group to the benzene ring enhances the molecular interaction which results in increases of the dilational modulus and foamstability.
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Corresponding Authors: ZHANG Lu Email:
Cite this article:
LI Zhen-Quan, ZHANG Lei, YAN Feng, ZHANG Lu, ZHAO Sui, YU Jia-Yong. Surface Dilational Properties of N-Acyltaurate Amphiphiles with Aromatic Side Chains[J]. Acta Phys. Chim. Sin., 2009,25 (09): .
&& doi: 10.3866/PKU.WHXB
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