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Transcriptomic and metabolomic analysis provides insights into lignin biosynthesis and accumulation and differences in lodging resistance in hybrid wheat

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Journal of Integrative Agriculture 2024年第4期23卷 1105-1117页

作者： Weibing Yang Shengquan Zhang Qiling Hou Jiangang Gao Hanxia Wang Xianchao Chen Xiangzheng Liao Fengting Zhang Changping Zhao Zhilie Qin institute of Hybrid wheat Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China Beijing Municipal Key Laboratory of Molecular Genetics of Hybrid wheat Beijing 100097China

The use of hybrid wheat is one way to improve the yield in the ***,greater plant heights increase lodging risk to some *** this study,two hybrid combinations with differences in lodging resistance were used to analyze the stem-related traits during the filling stage,and to investigate the mechanism of the difference in lodging resistance by analyzing lignin synthesis of the basal second internode(BSI).The stem-related traits such as the breaking strength,stem pole substantial degree(SPSD),and rind penetration strength(RPS),as well as the lignin content of the lodging-resistant combination(LRC),were significantly higher than those of the lodgingsensitive combination(LSC).The phenylpropanoid biosynthesis pathway was significantly and simultaneously enriched according to the transcriptomics and metabolomics analysis at the later filling stage.A total of 35 critical regulatory genes involved in the phenylpropanoid pathway were ***,42%of the identified genes were significantly and differentially expressed at the later grain-filling stage between the two combinations,among which more than 80%were strongly up-regulated at that stage in the LRC compared with *** the contrary,the LRC displayed lower contents of lignin intermediate metabolites than the *** results suggested that the key to the lodging resistance formation of LRC is largely the higher lignin synthesis at the later grain-filling ***,breeding strategies for synergistically improving plant height and lodging resistance of hybrid wheat were put forward by comparing the LRC with the conventional wheat applied in large areas.

关键词： gene expression lignin synthesis lodging-resistance hybrid wheat

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Orchestrating seed storage protein and starch accumulation toward overcoming yield–quality trade-off in cereal crops

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Journal of Integrative Plant Biology 2024年第3期66卷 468-483页

作者： Shuanghe Cao Bingyan Liu Daowen Wang Awais Rasheed Lina Xie Xianchun Xia Zhonghu He State Key Laboratory of Crop Gene Resources and Breeding/National wheat Improvement Center Institute of Crop SciencesBeijing 100081China College of Agronomy Henan Agricultural UniversityZhengzhou 450002China International Maize and wheat Improvement Center(CIMMYT)China Office Chinese Academy of Agricultural SciencesBeijing 100081China

Achieving high yield and good quality in crops is essential for human food security and ***,there is usually disharmony between yield and *** storage protein(SSP)and starch,the predominant components in cereal grains,determine yield and quality,and their coupled synthesis causes a yield–quality ***,dissection of the underlying regulatory mechanism facilitates simultaneous improvement of yield and ***,we summarize current findings about the synergistic molecular machinery underpinning SSP and starch synthesis in the leading staple cereal crops,including maize,rice and *** further evaluate the functional conservation and differentiation of key regulators and specify feasible research approaches to identify additional regulators and expand *** also present major strategies to leverage resultant information for simultaneous improvement of yield and quality by molecular ***,future perspectives on major challenges are proposed.

关键词： cereal crops grain yield and quality seed storage protein starch synergistic regulation

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Histological and single-nucleus transcriptome analyses reveal the specialized functions of ligular sclerenchyma cells and key regulators of leaf angle in maize

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Molecular Plant 2024年第6期17卷 920-934页

作者： Qibin Wang Qiuyue Guo Qingbiao Shi Hengjia Yang Meiling Liu Yani Niu Shuxuan Quan Di Xu Xiaofeng Chen Laiyi Li Wenchang Xu Fanying Kong Haisen Zhang Pinghua Li Bosheng Li Gang Li State Key Laboratory of wheat Improvement College of Life SciencesShandong Agricultural UniversityTai’an 271018China Peking University institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agriculture Sciences in WeifangWeifangShandong 261325China State Key Laboratory of wheat Improvement College of AgronomyShandong Agricultural UniversityTai’an 271018China

Leaf angle(LA)is a crucial factor that affects planting density and yield in ***,the regulatory mechanisms underlying LA formation remain largely *** this study,we performed a comparative histological analysis of the ligular region across various maize inbred lines and revealed that LA is significantly influenced by a two-step regulatory process involving initial cell elongation followed by subsequent lignification in the ligular adaxial sclerenchyma cells(SCs).Subsequently,we performed both bulk and single-nucleus RNA sequencing,generated a comprehensive transcriptomic atlas of the ligular region,and identified numerous genes enriched in the hypodermal cells that may influence their specialization into ***,we functionally characterized two genes encoding atypical basic-helix-loop-helix(bHLH)transcription factors,bHLH30 and its homolog bHLH155,which are highly expressed in the elongated adaxial *** analyses revealed that bHLH30 and bHLH155 positively regulate LA expansion,and molecular experiments demonstrated their ability to activate the transcription of genes involved in cell elongation and lignification of *** findings highlight the specialized functions of ligular adaxial SCs in LA regulation by restricting further extension of ligular cells and enhancing mechanical *** transcriptomic atlas of the ligular region at single-nucleus resolution not only deepens our understanding of LA regulation but also enables identification of numerous potential targets for optimizing plant architecture in modern maize breeding.

关键词： planting specialized angle

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Mutations in wheat TaAPA2 gene result in pleiotropic effects on plant architecture

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Science China Life Sciences 2024年第9期67卷 2039-2042页

作者： Shengsheng Bai Guiping Wang Rui Song Yanna Liu Lei Hua Jinwei Yang Lijun Zhang Shams ur Rehman Xiaohua Hao Lifeng Hou Chaozhong Zhang Hongna Li Yanyan Liang Lihua Zhao Yan Xue Zheng Wang Shisheng Chen National Key Laboratory of wheat Improvement Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agriculture Sciences in Weifang Department of Plant Sciences University of California

Dear Editor,Bread wheat(Triticum aestivum L.) is a globally important cereal providing ～20%of the calories and proteins for >4.5billion people. Plant architecture, including morphologies of leaves, spikes, stems,and roots, has great impact on plant development and productivity, and thus has been extensively investigated in various plant species(Jiang et al., 2023;Zhang et al., 2017).

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DGK5-mediated phosphatidic acid homeostasis interplays with reactive oxygen species in plant immune signaling

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Journal of Integrative Plant Biology 2024年第7期66卷 1263-1265页

作者： Dian Wang Minhang Yuan Yamei Zhuang Xiu-Fang Xin Guang Qi Crop Research institute Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of WheatJinan 252100China College of Agronomy Qingdao Agricultural UniversityQingdao 266109China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China

Plants have evolved a complex innate immune system that deploys two interconnected receptor layers to detect the invasion of various *** surface-resident pattern recognition receptors(PRRs)perceive pathogen-or microbeassociated molecular patterns(PAMPs/MAMPs),initiating a basal defense response called pattern-triggered immunity(PTI)(Zhou and Zhang,2020).

关键词： pattern homeostasis immunity

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Functional assessment of cadherin as a shared mechanism for cross/dual resistance to Cry1Ac and Cry2Ab in Helicoverpa zea

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Journal of Integrative Agriculture 2024年第5期23卷 1604-1617页

作者： Jizhen Wei Min Zhang Pin Li Zhongyuan Deng Xinming Yin Shiheng An Xianchun Li State Key Laboratory of wheat and Maize Crop Science/College of Plant Protection Henan Agricultural UniversityZhengzhou 450046China Department of Entomology and BIO5 institute University of ArizonaTucsonAZ 85721USA School of Agricultural Sciences Zhengzhou UniversityZhengzhou 450001China

Helicoverpa zea is a major target pest of pyramided transgenic crops expressing Cry1,Cry2 and/or Vip3Aa proteins from Bacillus thuringiensis(Bt)in the United ***-selected Cry1Ac/Cry2Ab cross resistance and fieldevolved practical dual resistance of *** to these two toxins have been widely *** the widespread Cry1Ac/Cy2Ab dual resistance of *** has resulted from the selection of one shared or two independent resistance mechanisms by pyramided Bt crops remains *** is a well-confirmed receptor of Cry1Ac and a suggested receptor of Cry2Ab in at least three Lepidopteran *** test whether cadherin may serve as one shared mechanism for the cross and dual resistance of *** to Cry1Ac and Cry2Ab,we cloned *** cadherin(HzCadherin)cDNA and studied its functional roles in the mode of action of Cry1Ac and Cry2Ab by gain-and lossof-function *** expression of HzCadherin in *** midgut,*** fat body and Sf9 cells made all three of these cell lines more susceptible to activated Cry1Ac but not activated Cry2Ab,whereas silencing HzCadherin of *** midgut and fat body cells significantly reduced the susceptibility to Cry1Ac but not ***,suppressing HzCadherin with siRNA made *** larvae resistant to *** results clearly demonstrate that HzCadherin is not a receptor for Cry2Ab,and thus it is unlikely to serve as one shared mechanism for the cross and dual resistance of *** to Cry1Ac and Cry2Ab.

关键词： Bt crops cadherin Cry toxin receptor resistance mechanism

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TaRLK-6A promotes Fusarium crown rot resistance in wheat

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Journal of Integrative Plant Biology 2024年第1期66卷 12-16页

作者： Haijun Qi Xiuliang Zhu Wenbiao Shen Xia Yang Chaozhong Zhang Genying Li Feng Chen Xuening Wei Zengyan Zhang institute of Special Animal and Plant Sciences Chinese Academy of Agricultural SciencesChangchun 130000China The National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China College of Life Science Nanjing Agricultural UniversityNanjing 210095China Agronomy College/National Key Laboratory of wheat and Maize Crop Science/CIMMYT‐China(Henan)Joint Center of wheat and Maize Henan Agricultural UniversityZhengzhou 450002China Department of Plant Sciences University of CaliforniaDavisCA 95616USA Crop Research institute Shandong Academy of Agricultural SciencesJinan 250100China

Fusariumcrown rot(FCR),mainly caused by the soil‐borne fungus Fusarium pseudograminearum,is a devastatingdisease of wheat(Triticum aestivum(Ta)).Fusariumcrown rotcauses substantial yield losses and generates mycotoxins inwheat grains that can cause serious health problems in hu-mans and livestock(Powell et al.,2017).Identifying genes thatprovide resistance *** character-izing the molecular mechanisms underlying such resistance arekey to breeding wheat varieties that are resistant to this dev-astating fungus.

关键词： aestivum breeding soil

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Advances in DNA methylation and its role in cytoplasmic male sterility in higher plants

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Journal of Integrative Agriculture 2024年第1期23卷 1-19页

作者： Atiqur Rahman Hasan Sofiur Rahman Shakil Uddin Naima Sultana Shirin Akhter Ujjal Kumar Nath Shamsun Nahar Begum Mazadul Islam Afroz Naznin Nurul Amin Sharif Ahmed Akbar Hossain Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh 2202Bangladesh Plant Breeding Division Bangladesh Institute of Nuclear AgricultureMymensingh 2202Bangladesh Tuber Crop Research Centre Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh Horticulture Research Centre Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh Biotechnology Division Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh International Rice Research institute Bangladesh OfficeDhaka 1213Bangladesh Division of Soil Science Bangladesh Wheat and Maize Research InstituteDinajpur 5200Bangladesh

The impact of epigenetic modifications like DNA methylation on plant phenotypes has expanded the possibilities for crop *** methylation plays a part in the regulation of both the chromatin structure and gene expression,and the enzyme involved,DNA methyltransferase,executes the methylation process within the plant *** regulating crucial biological pathways,epigenetic changes actively contribute to the creation of the ***,epigenome editing may assist in overcoming some of the drawbacks of genome editing,which can have minor off-target consequences and merely facilitate the loss of a gene’s *** drawbacks include gene knockout,which can have such off-target *** review provides examples of several molecular characteristics of DNA methylation,as well as some plant physiological processes that are impacted by these epigenetic changes in the *** also discuss how DNA alterations might be used to improve crops and meet the demands of sustainable and environmentally-friendly farming.

关键词： DNA methylation epigenetics CMS male sterility chromatin architecture gene expression higher plants

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TaCHP encoding C1-domain protein stably enhances wheat yield in saline-alkaline fields

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Journal of Integrative Plant Biology 2024年第2期66卷 169-171页

作者： Guilian Xiao Minqin Wang Xiaomeng Li Zhengning Jiang Hongjian Zhang Derong Gao Boqiao Zhang Guangmin Xia Mengcheng Wang The Key Laboratory of Plant Development andEnvironment Adaptation Biology Ministry of Education School of Life ScienceShandong UniversityQingdao 266237China Key Laboratory of wheat Biology and GeneticImprovement for Low&Middle Yangtze Valley Ministry ofAgriculture Lixiahe Agricultural Institute of Jiangsu ProvinceYangzhou 225007China

Salt and saline-alkaline stress seriously threaten crop production and food security worldwide(Yang and Guo,2018).Identifying genes that confer tolerance to these conditions without yield penalty would help mitigate this problem through molecular breeding(Liang et al.,2023;Sahu and Liu,2023).Although numerous stress-tolerance genes have been identified,their application potential in molecular breeding has rarely been confirmed through multi-year and multi-site field trials.

关键词： breeding fir alkaline

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Genome-wide association mapping and genomic prediction of stalk rot in two mid-altitude tropical maize populations

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The Crop Journal 2024年第2期12卷 558-568页

作者： Junqiao Song Angela Pacheco Amos Alakonya Andrea S.Cruz-Morales Carlos Muoz-Zavala Jingtao Qu Chunping Wang Xuecai Zhang Felix San Vicente Thanda Dhliwayo College of Agronomy Henan University of Science and TechnologyLuoyang 471000HenanChina International Maize and wheat Improvement Center(CIMMYT) El BatanMexico Anyang Academy of Agricultural Sciences Anyang 455000HenanChina CIMMYT-China Specialty Maize Research Center Crop Breedingand Cultivation Research InstituteShanghai Academy of Agricultural SciencesShanghai 201403China

Maize stalk rot reduces grain yield and *** about the genetics of resistance to maize stalk rot could help breeders design effective breeding strategies for the *** prediction may be a more effective breeding strategy for stalk-rot resistance than marker-assisted *** performed a genome-wide association study(GWAS)and genomic prediction of resistance in testcross hybrids of 677 inbred lines from the Tuxpe?o and non-Tuxpe?o heterotic pools grown in three environments and genotyped with 200,681 single-nucleotide polymorphisms(SNPs).Eighteen SNPs associated with stalk rot shared genomic regions with gene families previously associated with plant biotic and abiotic *** favorable SNP haplotypes traced to tropical than to temperate progenitors of the inbred *** genotype-by-environment(G×E)interaction increased genomic prediction accuracy.

关键词： Maize stalk rot Genome-wide association mapping Haplotype analysis Genomic prediction G×E interaction

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