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JAZ proteins:Key regulators of plant growth and stress response

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The Crop Journal 2024年第6期12卷 1505-1516页

作者： Xiaoqian Zhao yongqi he Yuxin Liu Zhoufei Wang Jia Zhao The Laboratory of Seed Science and Technology Guangdong Key Laboratory of Plant Molecular BreedingSouth China Agricultural UniversityGuangzhou 510642GuangdongChina National Engineering Research Center of Plant Space Breeding South China Agricultural UniversityGuangzhou 510642GuangdongChina

The jasmonate ZIM-domain(JAZ)family of proteins serves as co-receptors and transcriptional repressors of jasmonic acid(JA)in *** functional diversity and multiple roles make them important components of the regulatory network of JA and other hormonal signaling *** this review,we provide an overview of the latest findings on JAZ family proteins and emphasize their roles in plant growth and development,and response to biotic and abiotic stress,along with their underlying ***,existing challenges and future applications are outlined with the aim of offering a reference for further research on JAZ proteins in the context of plant physiology.

关键词： Jasmonate ZIM-domain proteins Transcription factors Plant growth Stress tolerance

The INVERSE PROBLEM OF OPTIMAL REGULATORS AND ITS AP-PLICATION

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Geo-Spatial Information Science 2000年第1期3卷 62-65页

作者： he Xiufeng CheN yongqi HU Shousong Department of Land Surveying and Geo-informatics The Hong Kong Polytechnic University Kowloon Hong Kong

This paper presents a new solution to the inverse problem of linear optimal regulators to minimize a cost function and meet the requirements of relative stability in the presence of a constant but unknown disturbance. A state feedback matrix is developed using Lyapunov’s second method. Moreover, the relationships between the state feedback matrix and the cost function are obtained, and a formula to solve the weighting matrices is suggest- ed. The developed method is applied successfully to design the horizontal loops in the inertial navigation system.

关键词： regulator optimal control Lyapunov’s second method pole assignment stability

Rice gene OsUGT75A regulates seedling emergence under deep-sowing conditions

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The Crop Journal 2024年第1期12卷 133-141页

作者： Jia Zhao Siyu Liu Xiaoqian Zhao Zhibo Huang Shan Sun Zixuan Zeng yongqi he Zhoufei Wang The Laboratory of Seed Science and Technology Guangdong Key Laboratory of Plant Molecular BreedingNational Engineering Research Center of Plant Space BreedingSouth China Agricultural UniversityGuangzhou 510642GuangdongChina

Poor seedling emergence is a challenge for direct seeding of rice under deep-sowing field *** we reveal that UDP-glucosyltransferase OsUGT75A promotes rice seedling emergence under deepsowing conditions by increasing shoot *** of OsUGT75A was higher in the middle regions of the shoot and in shoots under deep-sowing *** of free abscisic acid(ABA)and jasmonates(JA)were higher in shoots of OsUGT75A mutants than in those of wild-type plants,and OsUGT75A mutants were more sensitive to ABA and JA *** shoot length was attributed to higher ABA INSENSITIVE 3(OsABI3)expression and lower JASMONATE-ZIM domain protein(OsJAZ)expression in *** extension by OsUGT75A is achieved mainly by promotion of cell *** elite haplotype of OsUGT75A associated with increased shoot length was identified among indica rice ***75A acts to increase seedling emergence under deep-sowing conditions.

关键词： Abscisic acid Deep-sowing Jasmonic acid Rice Shoot length

Genome-wide association study reveals that JASMONATE ZIM-DOMAIN 5 regulates seed germination in rice

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The Crop Journal 2024年第4期12卷 1001-1009页

作者： Shan Sun Liling Peng Qianqian Huang Zhibo Huang Chengjing Wang Jia Zhao Zhoufei Wang yongqi he The Laboratory of Seed Science and Technology Guangdong Key Laboratory of Plant Molecular BreedingKey Laboratory for Enhancing Resource Use Efficiency of Crops in South ChinaMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642GuangdongChina

Seed germination is a complex trait regulated by multiple genes in ***,the regulators of rice seed germination have yet to be sufficiently ***,a quantitative trait locus(QTL)for rice seed germination was identified in a genome-wide association *** candidate gene JASMONATE ZIM-DOMAIN 5(OsJAZ5)of the QTL was verified that positively regulates seed ***5 regulation of seed germination involves an OsABI3-mediated abscisic acid *** of OsJAZ5 facilitated seed *** application of OsJAZ5 might be useful for increasing seed germination for rice direct seeding.

关键词： Abscisic acid JASMONATE ZIM-DOMAIN Oryza sativa Seed germination

RNA-Seq Study Reveals AP2-Domain-Containing Signalling Regulators Involved in Initial Imbibition of Seed Germination in Rice

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Rice science 2020年第4期27卷 302-314页

作者： he yongqi ZHAO Jia FENG Defeng HUANG Zhibo LIANG Jiaming ZheNG Yufei CheNG Jinping YING Jifeng WANG Zhoufei Laboratory of Seed Science and Technology/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China Laboratory of Seed Science and Technology State Key Laboratory of Crop Genetics and Germplasm EnhancementJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing 210095China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

A number of internal signals are required for seed ***,the precise signalling responses in the initial imbibition of seed germination are not yet fully understood in *** this study,the RNA sequencing(RNA-Seq)approach was conducted in 8 h imbibed seeds to understand the signalling responses in the initial imbibition of rice seed germination.A total of 563 differentially expressed genes(DEGs)with at least 4-fold change were identified in 8 h imbibed seeds compared to dry *** analysis revealed that the majority of signalling response-related DEGs were hormone-and transcription factor-related genes,in which the largest number of DEGs belong to the AP2-domain-containing regulators,and their expressions were significantly induced in the initial imbibition of seed germination in ***,at least five AP2-domain-containing transcription factor OsDREBs were identified in the initial imbibition of rice seed germination,and the expressions of 251 DEGs were putatively regulated by OsDREBs through the dehydration-responsive element(DRE)cis-element *** suggested that the OsDREBs might play important roles in the regulation of initial seed imbibition in *** identified genes provide a valuable resource to study the signalling regulation of seed germination in the future.

关键词： rice seed imbibition signalling response plant hormone transcription factor RNA-sequencing

Natural variation in the cytochrome c oxidase subunit 5B OsCOX5B regulates seed vigor by altering energy production in rice

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Journal of Integrative Agriculture 2024年第9期23卷 2898-2910页

作者： Chengwei Huang Zhijuan Ji Qianqian Huang Liling Peng Wenwen Li Dandan Wang Zepeng Wu Jia Zhao yongqi he Zhoufei Wang Laboratory of Seed Science and Technology/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/South China Agricultural University Guangzhou 510642China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572025 China National Rice Research Institute Hangzhou 310006China

Seed vigor is a crucial trait for the direct seeding of *** we examined the genetic regulation of seed vigor traits in rice,including germination index(GI)and germination potential(GP),using a genome-wide association study *** major quantitative trait locus,qGI6/qGP6,was identified simultaneously for both GI and *** candidate gene encoding the cytochrome c oxidase subunit 5B(OsCOX5B)was validated for qGI6/*** disruption of OsCOX5B caused the vigor traits to be significantly lower in Oscox5b mutants than in the japonica Nipponbare wild type(WT).Gene co-expression analysis revealed that OsCOX5B influences seed vigor mainly by modulating the tricarboxylic acid cycle *** glucose levels were significantly higher while the pyruvic acid and adenosine triphosphate levels were significantly lower in Oscox5b mutants than in WT during seed *** elite haplotype of OsCOX5B facilitates seed vigor by increasing its expression during seed ***,we propose that OsCOX5B is a potential target for the breeding of rice varieties with enhanced seed vigor for direct seeding.

关键词： cytochrome c oxidase natural variation rice seed vigor

Weakly-coupled mode division multiplexing over conventional multi-mode fiber with intensity modulation and direct detection

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Frontiers of Optoelectronics 2019年第1期12卷 31-40页

作者： Juhao LI Zhongying WU Dawei GE Jinglong ZHU Yu TIAN Yichi ZHANG Jinyi YU Zhengbin LI Zhangyuan CheN yongqi he State Key Laboratory of Advanced Optical Communication Systems and Networks Peking UniversityBeijing 100871China Wuhan Research Institute of Posts and Telecommunications Wuhan 430074China

Multi-mode fiber(MMF)links are expected to greatly enhance capacity to cope with rapidly increasing data traffic in optical short-reach systems and ***,mode division multiplexing(MDM)over MMF has been proposed,in which different modes in MMF are utilized as spatial channels for data *** MDM techniques utilizing coherent detection and multiplex-input-multiplex-output(MIMO)digital signal processing(DSP)are complex and expensive for shortreach *** the weakly-coupled approach by significantly suppressing mode coupling in the fiber and optical components has been *** this way,the signals in each mode can be independently transmitted and received using conventional intensity modulation and direct detection(IM-DD).In this paper,we elaborate the key technologies to realize weakly-coupled MDM transmission over conventional MMF,including mode characteristic in MMF and weakly-coupled mode multiplexer/ demultiplexer(MUX/DEMUX).We also present the upto-date experimental results for weakly-coupled MDM transmission over conventional OM3 *** show that weakly-coupled MDM scheme is promising for high-speed optical interconnections and bandwidth upgrade of already-deployed MMF links.

关键词： multi-mode fiber (MMF) mode division multiplexing (MDM) weak mode coupling intensity modulation and direct detection (IM-DD)

Network Capacity Analysis of Server Version WDM Optical Networks

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China Communications 2009年第3期6卷 89-93页

作者： Zhang Zhenrong Li Zhengbin he yongqi Xu Anshi State Key Laboratory of Advanced Optical Communication Systems & Networks Peking University Beijing 100871 China School of Computer Electronics and information Guangxi University Nanning 530004 Guangxi China

In this paper,a new architecture of optical networks—the optical network based on server system is *** the point of this new architecture,the network can be modeled as a server system with three type servers—the access server,the node server and the link server. The network performances such as cost,energy consume and network capacity can be affected by the capability of these three type *** ILP formulations are proposed to analyze the network capacity under two types of node severs,with and without wavelength *** simulations are conducted to evaluate the effectiveness of these new *** study has shown that the network can achieve the same throughput under the two types of node servers and the network throughput increases when the maximum allowed variation increases.

关键词： network capacity sever version WDM optical networks node severs

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种子活力分子调控机理研究进展

华南农业大学学报 2023年第5期44卷 659-669页

作者：赵佳何永奇王州飞广东省植物分子育种重点实验室/华南农业大学农学院广东广州510642

种子活力是种子播种质量的重要指标,也是种用价值的主要组成部分,它是一个复杂的综合性状,表现为种子快速发芽、耐逆萌发、幼苗快速建成等性状。种子活力与种子发育、成熟、劣变、萌发和处理等环节都密切相关,且受到各种外界环境的影响... 详细信息

种子活力是种子播种质量的重要指标,也是种用价值的主要组成部分,它是一个复杂的综合性状,表现为种子快速发芽、耐逆萌发、幼苗快速建成等性状。种子活力与种子发育、成熟、劣变、萌发和处理等环节都密切相关,且受到各种外界环境的影响。本文重点总结了调控种子活力形成、种子快速萌发、种子耐逆萌发、种子幼苗建成等方面的分子机理研究进展,并对今后研究方向进行了展望。

关键词：种子活力种子萌发幼苗建成分子机理耐逆性