2篇
您的检索式：作者名="Andrew P.Roberts"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Magnetochronology of Mid-Miocene mammalian fauna in the Lanzhou Basin,northeastern Tibetan Plateau:Implications for Asian mammal migration显示文摘The Quantougou(QTG) Fauna in central Lanzhou Basin is an important late Mid-Miocene fauna on the northeastern Tibetan Plateau margin,but its numerical age remains a matter of debate.Here,we present a new magnetostratigraphic record for a fluvio-lacustrine section to further constrain the age of the QTG Fauna.Results suggest that the studied section spans from polarity chrons C5Cn.2n to C5 n.2n or C5 An.1n,with ages of ca.16.5 Ma to 10 Ma or 16.5 Ma to 12 Ma.The QTG Fauna is located at the top of polarity chron C5r.3 r or C5 Ar.2 r,which corresponds to an age of 11.7 Ma or 12.8 Ma for the fauna.Accordingly,the associated Myocricetodontinae(a subfamily of Gerbillidae,Rodentia) is suggested to have appeared in the Lanzhou Basin at 11.7 Ma or 12.8 Ma,which is the oldest Myocricetodontinae in East Asia but is still much younger than the ~20 Ma appearance of this subfamily in West and South Asia.Our age data support the interpretation that East Asian Myocricetodontinae originated from South Asia.The QTG fauna further suggest a dry and open grassland environment,which is consistent with global cooling after the Mid-Miocene Climatic Optimum. | Peng Zhang Hong Ao Andrew P.Roberts Yongxiang Li Qiang Sun Jianhui Zhang Pengfei Sun Xiaoke Qiang | 2020 | Geoscience Frontiers2020，11，4： | 0 |
| 2 | Key gene networks that control magnetosome biomineralization in magnetotactic bacteria显示文摘Magnetotactic bacteria(MTB)are a group of phylogenetically and morphologically diverse prokaryotes that have the capability of sensing Earth's magnetic field via nanocrystals of magnetic iron minerals.These crystals are enclosed within intracellular membranes or organelles known as magnetosomes and enable a sensing function known as magnetotaxis.Although MTB were discovered over half a century ago,the study of the magnetosome biogenesis and organization remains limited to a few cultured MTB strains.Here,we present an integrative genomic and phenomic analysis to investigate the genetic basis of magnetosome biomineralization in both cultured and uncultured strains from phylogenetically diverse MTB groups.The magnetosome gene contents/networks of strains are correlated with magnetic particle morphology and chain configuration.We propose a general model for gene networks that control/regulate magnetosome biogenesis and chain assembly in MTB systems. | Peiyu Liu Yue Zheng Rongrong Zhang Jinling Bai Kelei Zhu Karim Benzerara Nicolas Menguy Xiang Zhao Andrew P.Roberts Yongxin Pan Jinhua Li | 2023 | National Science Review2023，10，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员