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Natural variation and artificial selection of photoperiodic flowering genes and their applications in crop adaptation

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aBIOTECH 2021年第2期2卷 156-169页

作者： Xiaoya Lin Chao Fang Baohui Liu fanjiang kong Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhouChina

Flowering links vegetative growth and reproductive growth and involves the coordination of local environmental cues and plant genetic *** timing of floral initiation and maturation in both wild and cultivated plants is important to their fitness and productivity in a given growth *** domestication of plants into crops,and later crop expansion and improvement,has often involved selection for early *** this review,we analyze the basic rules for photoperiodic adaptation in several economically important and/or well-researched crop *** ancestors of rice(Oryza sativa),maize(Zea mays),soybean(Glycine max),and tomato(Solanum lycopersicum)are short-day plants whose photosensitivity was reduced or lost during domestication and expansion to high-latitude ***(Triticum aestivum)and barley(Hordeum vulgare)are long-day crops whose photosensitivity is influenced by both latitude and vernalization ***,we summarize recent studies about where these crops were domesticated,how they adapted to photoperiodic conditions as their growing area expanded from domestication locations to modern cultivating regions,and how allelic variants of photoperiodic flowering genes were selected during this process.A deeper understanding of photoperiodic flowering in each crop will enable better molecular design and breeding of high-yielding cultivars suited to particular local environments.

关键词： Adaptation Photoperiodic flowering Crops Artificial selection

Mechanisms underlying key agronomic traits and implications for molecular breeding in soybean

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Journal of Genetics and Genomics 2024年第4期51卷 379-393页

作者： Chao Fang Haiping Du Lingshuang Wang Baohui Liu fanjiang kong Guangdong Key Laboratory of Plant Adaptation and Molecular Design Guangzhou Key Laboratory of Crop Gene EditingInnovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhouGuangdong 510006China

Soybean(Glycine max[L.]Merr.)is an important crop that provides protein and vegetable oil for human *** soybean is a photoperiod-sensitive crop,its cultivation and yield are limited by the photoperiodic conditions in the *** contrast to other major crops,soybean has a special plant architecture and a special symbiotic nitrogen fixation system,representing two unique breeding ***,flowering time,plant architecture,and symbiotic nitrogen fixation are three critical or unique yielddetermining *** review summarizes the progress made in our understanding of these three critical yield-determining factors in ***,we propose potential research directions to increase soybean production,discuss the application of genomics and genomic-assisted breeding,and explore research directions to address future challenges,particularly those posed by global climate changes.

关键词： Soybean Grain yield Flowering time Plant architecture Nodulation Symbiotic nitrogen fixation Genome study

Understandings and future challenges in soybean functional genomics and molecular breeding

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Journal of Integrative Plant Biology 2023年第2期65卷 468-495页

作者： Haiping Du Chao Fang Yaru Li fanjiang kong Baohui Liu Guangdong Key Laboratory of Plant Adaptation and Molecular Design Guangzhou Key Laboratory of Crop Gene EditingInnovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006China

Soybean(Glycine max)is a major source of plant protein and *** breeding has benefited from advances in functional *** particular,the release of soybean reference genomes has advanced our understanding of soybean adaptation to soil nutrient deficiencies,the molecular mechanism of symbiotic nitrogen(N)fixation,biotic and abiotic stress tolerance,and the roles of flowering time in regional adaptation,plant architecture,and seed yield and ***,many challenges remain for soybean functional genomics and molecular breeding,mainly related to improving grain yield through high-density planting,maize-soybean intercropping,taking advantage of wild resources,utilization of heterosis,genomic prediction and selection breeding,and precise breeding through genome *** review summarizes the current progress in soybean functional genomics and directs future challenges for molecular breeding of soybean.

关键词： flowering time functional genomics grain yield nodulation plant architecture response to nutrition deficiency seed quality soybean stress resistance

Current overview on the genetic basis of key genes involved in soybean domestication

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aBIOTECH 2022年第2期3卷 126-139页

作者： Sijia Lu Chao Fang Jun Abe fanjiang kong Baohui Liu Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510006China Guangzhou Key Laboratory of Crop Gene Editing Guangzhou UniversityGuangzhou 510006China Research Faculty of Agriculture Hokkaido UniversitySapporoHokkaido 060-0808Japan

Modern crops were created through the domestication and genetic introgression of wild relatives and adaptive differentiation in new *** the domestication-related genes and unveiling their molecular diversity provide clues for understanding how the domesticated variants were selected by ancient people,elucidating how and where these crops were *** genetics and genomics have explored some domestication-related genes in soybean(Glycine max).Here,we summarize recent studies about the quantitative trait locus(QTL)and genes involved in the domestication traits,introduce the functions of these genes,clarify which alleles of domesticated genes were selected during domestication.A deeper understanding of soybean domestication could help to break the bottleneck of modern breeding by highlighting unused genetic diversity not selected in the original domestication process,as well as highlighting promising new avenues for the identification and research of important agronomic traits among different crop species.

关键词： Soybean Domestication Diversity Gene

Molecular mechanisms for the photoperiodic regulation of flowering in soybean

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Journal of Integrative Plant Biology 2021年第6期63卷 981-994页

作者： Xiaoya Lin Baohui Liu James LWeller Jun Abe fanjiang kong Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510642China Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081China School of Natural Sciences University of TasmaniaHobartTasmania 7001Australia Research Faculty of Agriculture Hokkaido UniversitySapporo 060-8589Japan

Photoperiodic flowering is one of the most important factors affecting regional adaptation and yield in soybean(Glycine max). Plant adaptation to long-day conditions at higher latitudes requires early flowering and a reduction or loss of photoperiod sensitivity;adaptation to short-day conditions at lower latitudes involves delayed flowering, which prolongs vegetative growth for maximum yield potential. Due to the influence of numerous major loci and quantitative trait loci(QTLs), soybean has broad adaptability across latitudes. Forward genetic approaches have uncovered the molecular basis for several of these major maturity genes and QTLs. Moreover, the molecular characterization of orthologs of Arabidopsis thaliana flowering genes has enriched our understanding of the photoperiodic flowering pathway in soybean. Building on early insights into the importance of the photoreceptor phytochrome A, several circadian clock components have been integrated into the genetic network controlling flowering in soybean: E1, a repressor of FLOWERING LOCUS T orthologs, plays a central role in this network. Here, we provide an overview of recent progress in elucidating photoperiodic flowering in soybean, how it contributes to our fundamental understanding of flowering time control, and how this information could be used for molecular design and breeding of high-yielding soybean cultivars.

关键词： molecular-designed breeding photoperiodic flowering soybean

Genome editing toward biofortified soybean with minimal trade-off between low phytic acid and yield

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aBIOTECH 2024年第2期5卷 196-201页

作者： Wenxin Lin Mengyan Bai Chunyan Peng Huaqin Kuang fanjiang kong Yuefeng Guan Sanya Institute of China Agricultural University Sanya 572000China College of Agronomy China Agricultural UniversityBeijing 100193China Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design Innovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006China College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China

Phytic acid(PA)in grain seeds reduces the bioavailability of nutrient elements in monogastric animals,and an important objective for crop seed biofortification is to decrease the seed PA ***,we employed CRISPR/Cas9 to generate a PA mutant population targeting PA biosynthesis and transport genes,including two multi-drug-resistant protein 5(MRP5)and three inositol pentose-phosphate kinases(IPK1).We characterized a variety of lines containing mutations on multiple IPK and MRP5 *** seed PA was more significantly decreased in higher-order mutant lines with multiplex ***,such mutants also exhibited poor agronomic *** the population,we identified two lines carrying single mutations in ipk1b and ipk1c,*** mutants exhibited moderately reduced PA content,and regular agronomic performance compared to the wild *** study indicates that moderately decreasing PA by targeting single GmIPK1 genes,rather than multiplex mutagenesis toward ultra-low PA,is an optimal strategy for low-PA soybean with a minimal trade-off in yield performance.

关键词： Genome editing Phytic acid Soybean Agronomic traits CRISPR/Cas9

Perspectives on the Application of Genome-Editing Technologies in Crop Breeding

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Molecular Plant 2019年第8期12卷 1047-1059页

作者： Kai Hua Jinshan Zhang Jose Ramon Botella Changle Ma fanjiang kong Baohui Liu Jian-Kang Zhu Shanghai Center for Plant Stress Biology CAS Center of Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China School of Agriculture and Food Sciences University of QueenslandBrisbaneQLD 4072Australia Shandong Provincial Key Lab of Plant Stress School of Life SciencesShandong Normal UniversityJinanChina School of Life Sciences Guangzhou UniversityGuangzhouChina Department of Horticulture and Landscape Architecture Purdue UniversityWest LafayetteIN 47907USA

Most conventional and modern crop-improvement methods exploit natural or artificially induced genetic variations and require laborious characterization of the progenies of multiple generations derived from time-consuming genetic ***-editing systems,in contrast,provide the means to rapidly modify genomes in a precise and predictable way,making it possible to introduce improvements directly into elite ***,we describe the range of applications available to agricultural researchers using existing genome-editing *** addition to providing examples of genome-editing applications in crop breeding,we discuss the technical and social challenges faced by breeders using genome-editing tools for crop improvement.

关键词： genome editing crop breeding mutations base editing plants

The nodulation and nyctinastic leaf movement is orchestrated by clock gene LHY in Medicago truncatula

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Journal of Integrative Plant Biology 2020年第12期62卷 1880-1894页

作者： Yiming kong Lu Han Xiu Liu Hongfeng Wang Lizhu Wen Xiaolin Yu Xiaodong Xu fanjiang kong Chunxiang Fu Kirankumar S.Mysore Jiangqi Wen Chuanen Zhou The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationSchool of Life ScienceShandong UniversityQingdao 266237China School of Life Sciences Guangzhou UniversityGuangzhou 510006China Key Laboratory of Plant Stress Biology School of Life SciencesHenan UniversityKaifeng 475001China Shandong Provincial Key Laboratory of Energy Genetics Key Laboratory of BiofuelsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Noble Research Institute LLCArdmoreOklahomaUSA

As sessile organisms,plants perceive,respond,and adapt to the environmental changes for optimal growth and *** plant growth and fitness are enhanced by circadian clocks through coordination of numerous biological *** legume species,nitrogen-fixing root nodules were developed as the plant organs specialized for symbiotic transfer of ni-trogen between microsymbiont and ***,we report that the endogenous circadian rhythm in nodules is regulated by MtLHY in legume species Medicago *** of function of MtLHY leads to a reduction in the number of nodules formed,resulting in a diminished ability to assimilate *** operation of the 24-h rhythm in shoot is further influenced by the availability of nitrogen produced by the nodules,leading to the irregulated nyctinastic leaf movement and reduced biomass in mtlhy *** data shed new light on the roles of MtLHY in the orchestration of circadian oscillator in nodules and shoots,which provides a mechanistic link between nodulation,nitrogen assimilation,and clock function.

关键词： nodulation movement nodules

DELLA and EDS1 Form a Feedback Regulatory Module to Fine-Tune Plant Growth-Defense Tradeoff in Arabidopsis

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Molecular Plant 2019年第11期12卷 1485-1498页

作者： Yuge Li Yuhua Yang Yilong Hu Hailun Liu Ming He Ziyin Yang fanjiang kong Xu Liu Xingliang Hou Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement&Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhouChina Center of Economic Botany Core Botanical GardensChinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina School of Life Sciences Guangzhou UniversityGuangzhou 510006China

Plants maintain a dynamic balance between growth and defense,and optimize allocation of resources for survival under constant pathogen ***,the underlying molecular regulatory mechanisms,especially in response to biotrophic bacterial infection,remain ***,we demonstrate that DELLA proteins and EDS1,an essential resistance regulator,form a central module modulating plant growth-defense tradeoffs via direct *** infected by Pst DC3000,EDS1 rapidly promotes salicylic acid(SA)biosynthesis and resistance-related gene expression to prime defense response,while pathogen infection stabilizes DELLA proteins RGA and RGL3 to restrict growth in a partially EDS1-dependent manner,which facilitates plants to develop resistance to ***,the increasingly accumulated DELLAs interact with EDS1 to suppress SA overproduction and excessive resistance *** together,our findings reveal a DELLA-EDS1-mediated feedback regulatory loop by which plants maintain the subtle balance between growth and defense to avoid excessive growth or defense in response to constant biotrophic pathogen attack.

关键词： DELLA EDS1 Protein interaction Growth-defense tradeoff Arabidopsis