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Genetic variation in a heat shock transcription factor modulates cold tolerance in maize

Molecular plant 2024年第9期17卷 1423-1438页

作者： Lei Gao Lingling Pan Yiting Shi Rong Zeng Minze Li Zhuoyang Li Xuan Zhang Xiaoming Zhao Xinru Gong Wei Huang Xiaohong Yang Jinsheng Lai Jianru Zuo Zhizhong Gong Xiqing Wang Weiwei Jin Zhaobin Dong Shuhua Yang State Key Laboratory of plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingCollege of Biological SciencesCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingDepartment of Plant Geneticsand BreedingChinaAgricultural UniversityBeijingChina State Key Laboratory of plant Genomics and National plant Gene Research Center Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing100101China

Understanding how maize(Zea mays)responds to cold stress is crucial for facilitating breeding programs of cold-tolerant *** extensive utilization of the genome-wide association study(GWAs)approach for exploring favorable natural alleles associated with maize cold tolerance,few studies have successfully identified candidate genes that contribute to maize cold *** this study,we used a diverse panel of inbred maize lines collected from different germplasm sources to perform a GWAS on var-iations in the relative injured area of maize true leaves during cold stress-a trait very closely correlated with maize cold *** identified HsF21,which encodes a B-class heat shock transcription factor(HSF)that positively regulates cold tolerance at both the seedling and germination *** varia-tions in the promoter of the cold-tolerant HSF21Hap1 allele led to increased HSF21 expression under cold stress by inhibiting binding of the basic leucine zipper bziP68 transcription factor,a negative regulator of cold *** integrating transcriptome deep sequencing,DNA affinity purification sequencing,and targeted lipidomic analysis,we revealed the function of HsF21 in regulating lipid metabolism homeo-stasis to modulate cold tolerance in *** addition,we found that HsF21 confers maize cold tolerance without incurring yield ***,this study establishes HsF21 as a key regulator that en-hances cold tolerance in maize,providing valuable genetic resources for breeding of cold-tolerant maize varieties.

关键词： heat shock factor HSF21 cold tolerance natural variation bZiP68 lipid metabolism maize

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Genome-wide identification,characterization and functional prediction of the SRS gene family in sesame(Sesamum indicum L.)

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Oil Crop Science 2024年第2期9卷 69-80页

作者： Farjana Afroz Susmi Tasmina Islam Simi Md Nahid Hasan Md Abdur Rahim department of Genetics and plant breeding Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh

Sesame(Sesamum indicum L.)is an ancient oilseed crop of the Pedaliaceae family with high oil content and potential health *** RELATED SEQUENCE(SRS)proteins are the transcription factors(TFs)specific to plants that contain RING-like zinc finger domain and are associated with the regulation of several physiological and biochemical *** also play vital roles in plant growth and development such as root formation,leaf development,floral development,hormone biosynthesis,signal transduction,and biotic and abiotic stress ***,the SRS gene family was not reported in sesame *** this study,identification,molecular characterization,phylogenetic relationship,cis-acting regulatory elements,protein-protein interaction,syntenic relationship,duplication events and expression pattern of SRS genes were analyzed in *** identified total six SiSRS genes on seven different linkage groups in the *** genome by comparing with the other species,including the model plant Arabidopsis *** SiSRS genes showed variation in their structure like2–5 exons and 1–4 *** other species,SiSRS proteins also contained‘RING-like zinc finger'and‘LRP1'***,the SiSRS genes were clustered into subclasses via phylogenetic analysis with proteins of ***,***,and some other plant *** cis-acting regulatory elements analysis revealed that the promoter region of SiSRS4(SIN_1011561)showed the highest 13 and 16 elements for light-and phytohormone-responses whereas,SiSRS1(SIN_1015187)showed the highest 15 elements for *** ABREs,or ABA-responsive elements,were found in a maximum of 8 copies in the SiSRS3(SIN 1009100).Moreover,the available RNA-seq based expression of SiSRS genes revealed variation in expression patterns between stress-treated and non-treated samples,especially in drought and salinity conditions *** SiSRS genes like SiSRS1(SIN_1015187)and SiSRS5(SIN_1021065),also exhibited variabl

关键词： SiSRS gene family SHI Transcription factor Characterization Sesamum indicum

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Rice Heat Tolerance breeding: A Comprehensive Review and Forward Gaze

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Rice science 2024年第4期31卷 375-400,I0022页

作者： Ravindran Lalithambika VISAKH Sreekumar ANAND Sukumaran Nair ARYA Behera SASMITA Uday Chand JHA Rameswar Prasad SAH Radha BEENA department of Genetics and plant breeding College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India Crop Improvement Division Indian Council of Agricultural Research-National Rice Research InstituteCuttackOdisha 7530006India department of plant breeding and Genetics Indian Institute of Pulse ResearchKanpur 208024India department of plant Physiology College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India

The yield potential of rice is seriously affected by heat stress due to climate change. Since rice is a staple food globally, it is imperative to develop heat-resistant rice varieties. Thus, a thorough understanding of the complex molecular mechanisms underlying heat tolerance and the impact of high temperatures on various critical stages of the crop is needed. Adoption of both conventional and innovative breeding strategies offers a long-term advantage over other methods, such as agronomic practices, to counter heat stress. In this review, we summarize the effects of heat stress, regulatory pathways for heat tolerance, phenotyping strategies, and various breeding methods available for developing heat-tolerant rice. We offer perspectives and knowledge to guide future research endeavors aimed at enhancing the ability of rice to withstand heat stress and ultimately benefit humanity.

关键词： genetic mechanism high-temperature stress molecular breeding genomics selection

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CONSTANS alters the circadian clock in Arabidopsis thaliana

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Molecular plant 2024年第8期17卷 1204-1220页

作者： Pedro de los Reyes Gloria Serrano-Bueno Francisco J.Romero-Campero He Gao Jose M.Romero Federico Valverde plant Development Group-Institute for plant Biochemistry and Photosynthesis Consejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain department of Computer Science and Artificial Intelligence Universidad de SevillaSevilleSpain department of plant Developmental Biology Max Planck Institute for Plant Breeding ResearchCologneGermany department of plant Biochemistry and Molecular Biology Universidad de SevillaSevilleSpain

plants are sessile organisms that have acquired highly plastic developmental strategies to adapt to the *** these processes,the floral transition is essential to ensure reproductive success and is finelyregulated by several internal andexternal genetic *** photoperiodic pathway,which controls plant response to day length,is one of the most important pathways controlling *** Arabidopsis photoperiodic flowering,CONSTANS(CO)is the central gene activating the expression of the florigen FLOWERING LOCUS T(FT)in the leaves at the end of a long *** circadian clock strongly regulates Co ***,to date,no evidence has been reported regarding a feedbackloop from the photoperiod pathway back to the circadian *** transcriptional networks,we have identified relevant network motifs regulating the interplay between the circadian clock and the photoperiod *** expression,chromatin immunoprecipitation experiments,and phenotypic analysis allowed us to elucidate the role of Co over the circadian *** with altered cO expression showed a different internal clock period,measured by daily leaf rhythmic *** showed that co upregulates the expression of key genes related to the circadian clock,such as CCA1,LHY,PRR5,and Gl,at the end of a long day by bindingto specific sites on their ***,a high numberof PRR5-repressed target genes are upregulated by CO,and this could explain the phase transition promoted by *** CO-PRR5 complex interacts with the bZiP transcriptionfactor HY5andhelps to localize the complex in the promoters of clock *** together,our results indicate that there may be a feedback loop in which co communicates back to the circadian clock,providing seasonal information to the circadian system.

关键词： CONSTANS circadian clock photoperiod

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Hordedane diterpenoid phytoalexins restrict Fusarium graminearum infection but enhance Bipolaris sorokiniana colonization of barley roots

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Molecular plant 2024年第8期17卷 1307-1327页

作者： Yaming Liu Dario Esposto Lisa K.Mahdi Andrea Porzel Pauline Stark Hidayat Hussain Anja Scherr-Henning Simon Isfort Ulschan.Bathe Ivan F.Acosta Alga Zuccaro Gerd U.Balcke Alain Tissier department of Cell and Metabolic Biology Leibniz Institute of Plant BiochemistryHalleGermany Institute for plant Sciences Cluster of Excellence on Plant Sciences(CEPLAS)Cologne BiocenterUniversity of CologneCologneGermany department of Bioorganic Chemistry Leibniz Institute of Plant BiochemistryHalleGermany Max Planck Institute for plant breeding Research CologneGermany Horticultural Sciences University of FloridaGainesvilleFLUSA.

plant immunity is a multilayered process that includes recognition of patterns or effectors from pathogens to elicit defense *** include the induction of a cocktail of defense metabolites that typically restrict pathogen ***,we investigate the interaction between barley roots and the fungal pathogens Bipolaris sorokiniana(Bs)and Fusarium graminearum(Fg)at the metabolite *** identify hordedanes,a previously undescribed set of labdane-related diterpenoids with antimicrobial properties,as critical players in these *** of barley roots by Bs and Fg elicits hordedane synthesis from a 60o-kb gene *** reconstruction of the biosynthesis pathway in yeast and Nicotiana benthamiana produced several hordedanes,including one of the most functionally decorated products 19-β-hydroxy-hordetrienoic acid(19-OH-HTA).Barley mutants in the diterpene synthase genes of this cluster are unable to produce hordedanes but,unexpectedly,show reduced Bs *** contrast,colonization by Fusarium graminearum,another fungal pathogen of barley and wheat,is 4-fold higher in the mutants completely lacking ***,19-OH-HTA enhances both germination and growth of Bs,whereas it inhibits other pathogenic fungi,including *** of microscopy and transcriptomics data suggest that hordedanes delay the necrotrophic phase of *** together,these results show that adapted pathogens such as Bs can subvert plant metabolic defenses to facilitate root colonization.

关键词： barley Hordeum vulgare diterpenoid phytoalexins gene cluster pathogenic fungi Bipolaris sorokininiana Fusarium graminearum

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Emerging technological developments to address pest resistance in Bt cotton

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Journal of Cotton Research 2024年第3期7卷 318-333页

作者： NAGARAJ Selvarani RAJASEKARAN Ravikesavan PALANIAPPAN Jayamani RANGASAMY Selvakumar NARAYANASAMY Chitra NARAYANAN Manikanda Booapathi department of Genetics and plant breeding Centre for Plant Breeding and Genetics(CPBG)Tamil Nadu Agricultural University(TNAU)Coimbatore 641003India Centre for plant breeding and Genetics TNAUCoimbatore 641003India department of Pulses CPBGTNAUCoimbatore 641003India Research and Development Centre Rasi Seeds(P)Ltd.SalemAttur 636102India department of Cotton TNAUCoimbatore 641003India department of plant Biotechnology Centre for Plant Molecular Biology and Biotechnology(CPMB&B)TNAUCoimbatore 641003India

Cotton plays a crucial role in shaping Indian economy and rural *** cotton crop is prone to numerous insect pests,necessitating insecticidal application,which increases production *** advent of the expression of Bacillus thuringiensis(Bt)insecticidal protein in cotton has significantly reduced the burden of pest without compromising environmental or human *** the introduction of transgenic cotton,the cultivated area expanded to 22 million hectares,with a 64% increase in adoption by farmers ***,Bt cotton accounts for 93% of the cultivated cotton area in ***,extensive use of Bt cotton has accelerated resistance development in pests like the pink ***,the overreliance on Bt cotton has reduced the use of broad-spectrum pesticides,favouring the emergence of secondary pests with significant *** emphasizes the urgent necessity for developing novel pest management *** high-dose and refuge strategy was initially effective for managing pest resistance in Bt cotton,but its implementation in India faced challenges due to misunderstandings about the use of non-Bt refuge *** gene pyramiding was introduced as a solution,combining mono toxin also led to instances of ***,there is a need for further exploration of biotechnological approaches to manage insect resistance in Bt *** biotechnological strategies,such as sterile insect release,RNA interference(RNAi)-mediated gene silencing,stacking Bt with RNAi,and genome editing using clustered regularly interspaced short palindromic repeats/CRISPR-associated protein(CRISPR-Cas),offer promising tools for identifying and managing resistance genes in ***,CRISPR-mediated gene drives and the development of novel biopesticides present potential avenues for effective pest management in cotton *** innovative approaches could significantly enhance the sustainability and efficacy of

关键词： Bt Cotton Gene pyramiding RNAi Modified toxin Genome editing plant derived insecticidal protein Gene drive

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Structural changes in the conversion of an Arabidopsis outward-rectifying K+channel into an inward-rectifying channel

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plant Communications 2024年第6期5卷 5-8页

作者： Xudong Gao Xia Xu Tengfei Sun Yuhan Lu Yutian Jia Jiaqi Zhou Peng Fu Yanming Zhang Guanghui Yang State Key Laboratory of plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingDepartment of Nutrition and HealthCollege of Biological SciencesChina Agricultural UniversityBeijing 100193China

Dear Editor,By using cryo-electron microscopy and electrophysiology,this study characterizes the structural and functional dynamics of the K+outward-rectifying channel SKOR in Arabidopsis and the structural changes associated with a double mutation that transforms SKOR into an inward-rectifying K+channel,*** findings have implications for understanding and manipulating crop K+nutrition.

关键词： channel Arabidopsis changes

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Methane Emission from Rice Fields:Necessity for Molecular Approach for Mitigation

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Rice science 2024年第2期31卷 159-178页

作者： Sujeevan RAJENDRAN Hyeonseo PARK Jiyoung KIM Soon Ju PARK Dongjin SHIN Jong-Hee LEE Young Hun SONG Nam-Chon PAEK Chul Min KIM department of Horticulture Industry Wonkwang UniversityIksan 54538Korea plant Molecular Biology and Biotechnology Research Center Gyeongsang National UniversityJinju 52828Korea department of Southern Area Crop Science National Institute of Crop ScienceMiryang 50424Korea department of Agricultural Biotechnology Seoul National UniversitySeoul 08826Korea department of plant Science Plant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Korea

Anthropogenic methane emissions are a leading cause of the increase in global averagetemperatures,often referred to as global *** soils play a significant role in methaneproduction,where the anaerobic conditions promote the production of methane by *** fields contribute a considerable portion of agricultural methane emissions,as riceplants provide both factors that enhance and limit methane *** plants harbor both methaneproducingand methane-oxidizing *** from rice roots provide source for methaneproduction,while oxygen delivered from the root aerenchyma enhances methane *** haveshown that the diversity of these microorganisms depends on rice cultivars with some genes characterizedas harboring specific groups of microorganisms related to methane ***,there is still aneed for research to determine the balance between methane production and oxidation,as rice plantspossess the ability to regulate net methane *** agronomical practices,such as fertilizerand water management,have been employed to mitigate methane ***,studiescorrelating agronomic and chemical management of methane with productivity are ***,evidences for breeding low-methane-emitting rice varieties are scattered largely due to the absence ofcoordinated breeding *** has indicated that phenotypic characteristics,such as rootbiomass,shoot architecture,and aerenchyma,are highly correlated with methane *** reviewdiscusses available studies that involve the correlation between plant characteristics and *** emphasizes the necessity and importance of breeding low-methane-emitting rice varieties inaddition to existing agronomic,biological,and chemical *** review also delves into the idealphenotypic and physiological characteristics of low-methane-emitting rice and potential breeding techniques,drawing from studies conducted

关键词： methane emission rice breeding aerenchyma greenhouse gas radial oxygen loss

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A chorismate mutase from Radopholus similis plays an essential role in pathogenicity

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Journal of Integrative Agriculture 2024年第3期23卷 923-937页

作者： Sihua Yang Junyi Li Shuai Yang Shiqiao Tang Huizhong Wang Chunling Xu Hui Xie Laboratory of plant Nematology andResearch Centerof Nematodes of plant Quarantine Department of Plant Patholo of Plant ProtectionSouth China Agricultural UniversityGuangzhou 510642China

In the process of infecting plants, plant parasitic nematodes release a series of proteins that play an essential role in the successful infection and pathogenesis of plant cells and tissues through stylets or body walls. In this study,based on transcriptome data, a chorismate mutase gene of Radopholus similis(RsCM) was identified and cloned,which is a single copy gene specifically expressed in the oesophageal gland and highly expressed in juveniles and females. Transient expression of RsCM in tobacco leaves showed that it was localised in the cytoplasm and nucleus of tobacco leaf cells, which inhibited the pattern-triggered immunity(PTI) induced by flg22, including callose deposition and defence gene expression, and cell death induced by immune elicitors BAX, but could not inhibit cell death induced by immune elicitors Gpa2/RBP-1. The RNA interference(RNAi) transgenic tomato of RsCM obviously inhibited the infection, pathogenicity, and reproduction of R. similis. However, the resistance of the overexpression transgenic tomato of RsCM to R. similis infection was significantly reduced, and the expression levels of two salicylic acid(SA) pathway genes(PR1 and PR5) in roots infected by the nematode were significantly down-regulated,which indicated that RsCM might be involved in the inhibition of SA pathway. The results of this study demonstrate that RsCM suppresses the host immune system and might be a new target for the control of R. similis, which also provides new data for the function and mechanism of CM genes of migratory parasitic plant nematodes.

关键词： Radopholus similis chorismate mutase plant defense transgenic tomato

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Callus proliferation-induced hypoxic microenvironment decreases shoot regeneration competence in Arabidopsis

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Molecular plant 2024年第3期17卷 395-408页

作者： Dohee Koo Hong Gil Lee Soon Hyung Bae Kyounghee Lee Pil Joon Seo department of Chemistry Seoul National UniversitySeoul 08826Korea plant Genomics and breeding Institute Seoul National UniversitySeoul 08826Korea Research Institute of Basic Sciences Seoul National UniversitySeoul 08826Korea

plants are aerobic organisms that rely on molecular oxygen for respiratory energy *** conditions,with oxygen levels ranging between 1%and 5%,usually limit aerobic respiration and affect plant growth and ***,we demonstrate that the hypoxic microenvironment induced by active cell proliferation during the two-step plant regeneration process intrinsically represses the regener-ation competence of the callus in Arabidopsis *** showed that hypoxia-repressed plant regener-ation is mediated by the RELATED TO APETALA2.12(RAP2.12)protein,a memberof the Ethylene Response Factor VIl(ERF-Vll)*** found that the hypoxia-activated RAP2.12 protein promotes salicylic acid(SA)biosynthesis and defense responses,thereby inhibiting pluripotency acquisition and de novo shoot regeneration in *** and genetic analyses revealed that RAP2.12 could bind directly to the SALICYLIC ACID INDUCTION DEFICIENT 2(SID2)gene promoter and activate SA biosynthesis,repressing plant regeneration possibly via a PLETHORA(PLT)-dependent ***,the rap2.12 mutant calli exhibits enhanced shoot regeneration,which is impaired by SA *** together,these find-ings uncover that the cell proliferation-dependent hypoxic microenvironment reduces cellular pluripotency and plant regeneration through the RAP2.12-SID2 module.

关键词： callus cell proliferation-induced hypoxia SID2 plant regeneration salicylic acid RAP2.12

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