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作者：Jiang, Bin; Gao, Lei; Wang, Haijun; Sun, Yaping; Zhang, Xiaolin; Ke, Han; Liu, Shengchao; Ma, Pengchen; Liao, Qinggang; Wang, Yue; Wang, Huan; Liu, Yugeng; Du, Ran; Rogge, Torben; Li, Wei; Shang, Yi; Houk, K. N.; Xiong, Xingyao; Xie, Daoxin; Huang, Sanwen; Lei, Xiaoguang; Yan, Jianbin
作者单位：Guangdong Laboratory for Lingnan Modern Agriculture; Chinese Academy of Agricultural Sciences; Agriculture Genomes Institute at Shenzhen, CAAS; Peking University; South China Agricultural University; University of California System; University of California Los Angeles; Yunnan Normal University; Tsinghua University; Shenzhen Bay Laboratory
摘要：Paclitaxel is a well known anticancer compound. Its biosynthesis involves the formation of a highly functionalized diterpenoid core skeleton (baccatin III) and the subsequent assembly of a phenylisoserinoyl side chain. Despite intensive investigation for half a century, the complete biosynthetic pathway of baccatin III remains unknown. In this work, we identified a bifunctional cytochrome P450 enzyme [taxane oxetanase 1 (TOT1)] in Taxus mairei that catalyzes an oxidative rearrangement in pacli...
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作者：Wang, Hongxing; Ren, Jie; Zhou, Shiyun; Duan, Yaoyuan; Zhu, Chenqiao; Chen, Chuanwu; Liu, Ziyan; Zheng, Qingyou; Xiang, Shu; Xie, Zongzhou; Wang, Xia; Chai, Lijun; Ye, Junli; Xu, Qiang; Guo, Wenwu; Deng, Xiuxin; Zhang, Fei
作者单位：Huazhong Agricultural University; Hubei Hongshan Laboratory
摘要：Secretory structures in terrestrial plants serve as reservoirs for a variety of secondary metabolites. Among these, the secretory cavity of the Rutaceae family is notable for containing essential oils with a wide range of applications. However, the molecular basis underlying secretory cavity development is unknown. Here, we reveal a molecular framework for Citrus oil gland formation. Using genetic mapping and genome editing, we demonstrated that this process requires LATE MERISTEM IDENTITY1 (L...
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作者：Gupta, Isha
作者单位：University of Delhi
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作者：Liu, Yi; Wang, Yanyan; Willett, Sean D.; Zimmermann, Niklaus E.; Pellissier, Loic
作者单位：Swiss Federal Institutes of Technology Domain; Swiss Federal Institute for Forest, Snow & Landscape Research; Swiss Federal Institutes of Technology Domain; ETH Zurich; Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：Madagascar exhibits high endemic biodiversity that has evolved with sustained and stable rates of speciation over the past several tens of millions of years. The topography of Madagascar is dominated by a mountainous continental rift escarpment, with the highest plant diversity and rarity found along the steep, eastern side of this geographic feature. Using a process-explicit model, we show that precipitation-driven erosion and landward retreat of this high-relief topography creates transient ...
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作者：Cornwall, Warren
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作者：Zhou, Xiaoyu; Wang, Zhuofan; Li, Shuai; Rong, Xianle; Bu, Jiexun; Liu, Qiang; Ouyang, Zheng
作者单位：Tsinghua University; Tsinghua University; Tsinghua University; Tsinghua Shenzhen International Graduate School
摘要：Conventional mass spectrometry does not distinguish between enantiomers, or mirror-image isomers. Here we report a technique to break the chiral symmetry and to differentiate enantiomers by inducing directional rotation of chiral gas-phase ions. Dual alternating current excitations were applied to manipulate the motions of trapped ions, including the rotation around the center of mass and macro movement around the center of the trap. Differences in collision cross section were induced, which c...
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作者：Yan, Zhenjie; Patel, Parth B.; Mukherjee, Biswaroop; Vale, Chris J.; Fletcher, Richard J.; Zwierlein, Martin W.
作者单位：Massachusetts Institute of Technology (MIT); Harvard University; Massachusetts Institute of Technology (MIT); Swinburne University of Technology; Swinburne University of Technology; University of California System; University of California Berkeley
摘要：Heat transport can serve as a fingerprint identifying different states of matter. In a normal liquid, a hotspot diffuses, whereas in a superfluid, heat propagates as a wave called second sound. Direct imaging of heat transport is challenging, and one usually resorts to detecting secondary effects. In this study, we establish thermography of a strongly interacting atomic Fermi gas, whose radio-frequency spectrum provides spatially resolved thermometry with subnanokelvin resolution. The superflu...
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作者：Wang, Qingqing; Liu, Wei; Leung, Chun Chung; Tarte, Daniel A.; Gendron, Joshua M.
作者单位：Yale University
摘要：INTRODUCTION Daylength, or photoperiod, is a stable indicator of the season, and organisms can measure photoperiods to predict seasonal changes in climate. In plants, flowering and growth are often regulated by photoperiod, and the photoperiodic flowering pathway is well understood. By contrast, much less is known about how photoperiod regulates growth, including the measurement system and genes that are required. RATIONALE Studies of photoperiodic flowering have benefitted from mutants with o...
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作者：[Anonymous]
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作者：Brainard, Jeffrey
