检索结果-南通市图书馆

The chimeric gene atp6c confers cytoplasmic male sterility in maize by impairing the assembly of the mitochondrial ATP synthase complex

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2022年第5期15卷 872-886页

作者： Huili Yang Yadong Xue Bing li Yanan lin haochuan li Zhanyong Guo Weihua li Zhiyuan Fu Dong Ding Jihua Tang National Key Laboratory of Wheat and Maize Crop Science College of AgronomyHenan Agricultural UniversityZhengzhouChina The Shennong Laboratory ZhengzhouChina

Cytoplasmic male sterility(CMS)is a powerful tool for the exploitation of hybrid heterosis and the study of signaling and interactions between the nucleus and the cytoplasm.C-type CMS(CMS-C)in maize has long been used in hybrid seed production,but the underlying sterility factor and its mechanism of action remain *** this study,we demonstrate that the mitochondrial gene atp6c confers male sterility in CMS-C *** ATP6C protein shows stronger interactions with ATP8 and ATP9 than ATP6 during the assembly of F1F0-ATP synthase(F-type ATP synthase,ATPase),thereby reducing the quantity and activity of assem-bled F_(1)F_(o)-ATP *** contrast,the quantity and activity of the F1'component are increased in CMS-C *** F1F0-ATP synthase activity causes accumulation of excess protons in the inner membrane space of the mitochondria,triggering a burst of reactive oxygen species(ROS),premature programmed cell death of the tapetai cells,and pollen ***,our study identifies a chimeric mitochondrial gene(ATP6C)that causes CMS in maize and documents the contribution of ATP6C to F1F0-ATP synthase assembly,thereby providing novel insights into the molecular mechanisms of male sterility in plants.

关键词： maize cytoplasmic male sterility atp6c ATP synthase mitochondria

Single-cell RNA sequencing of meiocytes and microspores reveals the involvement of the Rf4 gene in redox homeostasis of CMS-C maize

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2021年第6期9卷 1237-1247页

作者： Huaisheng Zhang Huili Yang Desheng Hu Bing li Yanan lin Wen Yao Zhanyong Guo haochuan li Dong Ding Zhanhui Zhang Yanmin Hu Yadong Xue Jihua Tang National Key Laboratory of Wheat and Maize Crop Science College of AgronomyHenan Agricultural UniversityZhengzhou 450002HenanChina College of life Sciences Henan Agricultural UniversityZhengzhou 450002HenanChina

Normal microsporogenesis is determined by both nuclear and mitochondrial genes. In maize C-type cytoplasmic male sterility, it is unclear how the development of meiocytes and microspores is affected by the mitochondrial sterility gene and the nuclear restorer gene. In this study, we sequenced the transcriptomes of single meiocytes(tetrad stage) and early mononucleate microspores from sterile and restorer lines. The numbers of expressed genes varied in individual cells and fewer than half of the expressed genes were common to the same cell types. Four comparisons revealed 3379 differentially expressed genes(DEGs), with 277 putatively associated with mitochondria, 226 encoding transcription factors,and 467 possibly targeted by RF4. KEGG analysis indicated that the DEGs in the two lines at the tetrad stage were involved predominantly in carbon metabolism and in amino acid biosynthesis and metabolism, whereas the DEGs during the transition from the tetrad stage to the early mononucleate stage were associated mostly with regulation of protein metabolism, fatty acid metabolism, and anatomical structure morphogenesis. Thus, meiocyte and microspore development was affected by the surrounding cells and the restorer gene, and the restorer gene helped restore the redox homeostasis of microspores and the normal cellular reconstruction during the transition.

关键词： Maize Single-cell sequencing Cytoplasmic male sterility Restoration Heterosis

Room-temperature continuous-wave topological Dirac-vortex microcavity lasers on silicon

在线全文

学校读者我要写书评

暂无评论

light(Science & Applications) 2023年第11期12卷 2451-2458页

作者： Jingwen Ma Taojie Zhou Mingchu Tang haochuan li Zhan Zhang Xiang Xi Mickael Martin Thierry Baron Huiyun liu Zhaoyu Zhang Siming Chen Xiankai Sun Department of Electronic Engineering The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina School of Science and Engineering The Chinese University of Hong KongShenzhenGuangdong 518172China Department of Electronic and Electrical Engineering University College LondonLondon WC1E 7JEUK UniversitéGrenoble Alpes CNRSCEA-LETIMINATECGrenoble INPLTMF-38054 GrenobleFrance

Robust laser sources are a fundamental building block for contemporary information *** from condensed-matter physics,the concept of topology has recently entered the realm of optics,offering fundamentally new design principles for lasers with enhanced *** analogy to the well-known Majorana fermions in topological superconductors,Dirac-vortex states have recently been investigated in passive photonic systems and are now considered as a promising candidate for robust ***,we experimentally realize the topological Diracvortex microcavity lasers in InAs/InGaAs quantum-dot materials monolithically grown on a silicon *** observe room-temperature continuous-wave linearly polarized vertical laser emission at a telecom *** confirm that the wavelength of the Dirac-vortex laser is topologically robust against variations in the cavity size,and its free spectral range defies the universal inverse scaling law with the cavity *** lasers will play an important role in CMOS-compatible photonic and optoelectronic systems on a chip.

关键词： wave continuous cavity

Advancing large-scale thin-film PPLN nonlinear photonics with segmented tunable micro-heaters

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2024年第8期12卷 1703-1708页

作者： XIAOTING li haochuan li ZHENZHENG WANG ZHAOXI CHEN FEI MA KE ZHANG WENZHAO SUN CHENG WANG Department of Electrical Engineering City University of Hong KongHong KongChina School of Physics Sun Yat-sen UniversityGuangzhou 510275China City University of Hong Kong(Dongguan) Dongguan 523808China Center of Information and Communication Technology City University of Hong Kong Shenzhen Research InstituteShenzhen 518057China State Key Laboratory of Terahertz and Millimeter Waves City University of Hong KongHong KongChina

Thin-film periodically poled lithium niobate(TF-PPLN)devices have recently gained prominence for efficient wavelength conversion processes in both classical and quantum ***,the patterning and poling of TF-PPLN devices today are mostly performed at chip scales,presenting a significant bottleneck for future largescale nonlinear photonic systems that require the integration of multiple nonlinear components with consistent performance and low ***,we take a pivotal step towards this goal by developing a wafer-scale TF-PPLN nonlinear photonic platform,leveraging ultraviolet stepper lithography and an automated poling *** address the inhomogeneous broadening of the quasi-phase matching(QPM)spectrum induced by film thickness variations across the wafer,we propose and demonstrate segmented thermal optic tuning modules that can precisely adjust and align the QPM peak wavelengths in each *** the segmented micro-heaters,we show the successful realignment of inhomogeneously broadened multi-peak QPM spectra with up to 57%enhancement of conversion *** achieve a high normalized conversion efficiency of 3802%W-1cm-2in a 6 mm long PPLN waveguide,recovering 84%of the theoretically predicted efficiency in this *** advanced fabrication techniques and segmented tuning architectures presented herein pave the way for wafer-scale integration of complex functional nonlinear photonic circuits with applications in quantum information processing,precision sensing and metrology,and low-noise-figure optical signal amplification.

关键词： tuning tunable waveguide

Multiband camouflage design with thermal management

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2023年第5期11卷 839-851页

作者： LEHONG HUANG haochuan li ZHIGUO li WENBO ZHANG CAIWEN MA CHUNMIN ZHANG YUXUAN WEI liANG ZHOU XUN li ZHIYUAN CHENG XIAOHUI GUO SHIPING GUO Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’an 710119China School of Physics Xi’an Jiaotong UniversityXi’an 710049China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Space Precision Measurement Technology Chinese Academy of SciencesXi’an 710119China

Although the effective“stealth”of space vehicles is important,current camouflage designs are inadequate in meeting all application ***,a multilayer wavelength-selective emitter is *** can realize visible light and dual-band mid-infrared camouflage with thermal control management in two application scenarios,with better effect and stronger radiation cooling capability,which can significantly improve the stealth and survivability of space vehicles in different *** selective emitter demonstrated in this paper has the advantages of simple structure,scalability,and ease of large-area fabrication,and has made a major breakthrough in driving multiband stealth technology from simulation research to physical verification and even practical application.

关键词： breakthrough driving management

Investigating the molecular genetic pasis of neterosis for internode expansion in maize by microRNA transcriptomic deep-sequencing

在线全文

学校读者我要写书评

暂无评论

Investigating the molecular genetic pasis of neterosis for i...

The genetic Analysis of Arsenic Accumulation in Maize by the QTL mapping method

第一届全国玉米生物学学术研讨会

作者：丁冬 Peng Zhao Fangfang Zhang Xiaofeng Zhao Yadong Xue Weihua li Zhiyuan Fu haochuan li Jihua Tang Collaborative Innovation Center of Henan Grain Crops College of Agronomy Henan Agricultural University Key Laboratory of Physiological Ecology and Genetic Improvement of Food Crops in Henan Province

Heterosis has been used widely in the breeding of maize and other crops,and plays an important role in increasing yield,improving quality and enhancing stress resistance,but its molecular mechanism is far from *** determine whether miRNA-dependent gene regulation is responsible for heterosis of elongating internodes below the ear and ear height in maize,a deep-sequencing strategy was

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

The genetic Analysis of Arsenic Accumulation in Maize by the...

基于NPP-VIIRS及Landsat-8的多时相城市建成区提取方法探讨

第一届全国玉米生物学学术研讨会

作者：付忠军 Weihua li Xiaolong Xing Mengmeng Xu Xiaoyang liu haochuan li Yadong Xue Zonghua liu Jihua Tang Key Laboratory of Wheat and Maize Crops Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural University Maize Research Institute Chongqing Academy of Agricultural Sciences

Arsenic(As)is a toxic heavy metal that can accumulate in crops,posing a health threat to *** genetic mechanism of As accumulation is ***,quantitative trait locus(QTL)mapping was used to unravel the genetic basis of As accumulation in maize using a recombinant inbred line population derived from the Chinese crossbred variety *** kernels had the lowest As content among different maize ***-eight QTLs were identified at two locations,mostly clustered in chromosomal bins 1.02-1.03,1.07-1.08,4.05,5.03,7.00,and *** As content-related QTLs in maize kernels were detected in the 1.07-1.08chromosomal *** the same genomic region,one QTL for Zn content in maize kernels and two QTLs related to drought tolerance were *** the 4.05genomic region,qLAC4a was consistent with one QTL for Hg accumulation from our previous *** results indicated that pleiotropic effects operate for some As content-related QTLs in maize tissues,and the As content in maize tissues could be altered by genetic *** would be possible to maintain the demand for safe com and to decrease the As content in As-contaminated soil simultaneously by selecting and breeding As-pollution-safe cultivars.

关键词： Maize Arsenic accumulation QTL Mapping

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

福建地质 2023年第4期42卷 305-310页

作者：李灏川福建省地质测绘院福州350011

随着遥感技术的发展,由夜间灯光数据提取城市建成区已成为主要方法之一。传统阈值提取方法在小尺度的研究中存在较明显误差,以三明市三元区为研究区,基于2013—2021年NPP-VIIRS夜间灯光数据和Landsat-8遥感数据,利用夜间灯光数据的空间... 详细信息

随着遥感技术的发展,由夜间灯光数据提取城市建成区已成为主要方法之一。传统阈值提取方法在小尺度的研究中存在较明显误差,以三明市三元区为研究区,基于2013—2021年NPP-VIIRS夜间灯光数据和Landsat-8遥感数据,利用夜间灯光数据的空间自相关特性,在扣除植被和水体后向前迭代提取2013—2021年多时相城市建成区。研究表明,改良方法总体分类精度在2013—2021年间不低于99%,Kappa系数不低于0.88,较传统的阈值法提取结果在精度和稳定性上有明显提升。

关键词： NPP-VIIRS Landsat-8数据集 Kappa系数多时相建成区三明市

Highly integrated photonic crystal bandedge lasers monolithically grown on Si substrates

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第4期20卷 29-32页

作者： Yaoran Huang Taojie Zhou Mingchu Tang Guohong Xiang haochuan li Mickael Martin Thierry Baron Siming Chen Huiyun liu Zhaoyu Zhang School of Science and Engineering and Shenzhen Key Laboratory of Semiconductor Lasers The Chinese University of Hong KongShenzhen(CUHKSZ)Shenzhen 518172China Department of Electronic and Electrical Engineering University College LondonLondon WC1E 7JEUK Universite Grenoble Alpes CNRSCEA-LETIMINATECLTMF-38054 GrenobleFrance

Monolithic integration of Ⅲ-Ⅴ lasers with small footprint, good coherence, and low power consumption based on a CMOS-compatible Si substrate have been known as an efficient route towards high-density optical interconnects in the photonic integrated circuits. However, the material dissimilarities between Si and Ⅲ-Ⅴ materials limit the performance of monolithic microlasers. Here, under the pumping condition of a continuous-wave 632.8 nm He–Ne gas laser at room temperature, we achieved an InAs/GaAs quantum dot photonic crystal bandedge laser, which is directly grown on an on-axis Si(001) substrate, which provides a feasible route towards a low-cost and large-scale integration method for light sources on the Si platform.

关键词： lasers bandedge photonic crystal monolithic integration quantum dots silicon substrate