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Introgression of lac6/tl1/du13 improves the palatability of japonica rice

The Crop Journal 2024年第4期12卷 1259-1265页

作者： Yong Yang Tao Zhang Yuliang Shi Yan Lu Qianfeng Li Xiaolei Fan Lichun Huang Lu Chen Xuetang Song Qing Liu Changquan Zhang Qiaoquan Liu Jiangsu Key laboratory of Crop Genomics and molecular Breeding/Zhongshan Biological Breeding laboratory/Key laboratory of plant Functional Genomics of the Ministry of Education Agricultural College of Yangzhou UniversityYangzhou 225009JiangsuChina Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key laboratory of Crop genetics and Physiology Yangzhou UniversityYangzhou 225009JiangsuChina Jiang Su(Wu Jin)Rice Research Institute Changzhou 213175JiangsuChina

Amylose content(AC)is a crucial determinant of the eating and cooking quality(ECQ)of rice,with low AC varieties exhibiting a softer texture and greater stickiness-attributes that enhance palatability and are desirable in specific culinary *** harness these traits,significant efforts have been made to manipulate AC to improve rice *** research utilized the MutMap+approach to identify LAC6/TL1,a gene that is an allele of Du13,responsible for low ***6 encodes a C2H2 zinc finger protein,which specifically increases the splicing efficiency of the Wxb allele without affecting the Wxa *** studies of LAC6 revealed that its proper integration could rectify the undesirable AC phenotype,whereas mutations within this gene led to reduced AC and were associated with shorter grain length and decreased thousand-grain *** these drawbacks,such mutations positively impact rice palatability,presenting a trade-off between grain size and eating *** address the challenges posed by the reduced grain weight associated with LAC6 mutations,we developed a specific molecular marker for LAC6,which has been effectively used in breeding programs to select lac6/tl1/du13 homozygous individuals with larger grain *** findings demonstrate that the“small grain”trait associated with lac6/tl1/du13 can be effectively mitigated through combined phenotype-based and marker-assisted *** study highlights the potential of lac6/tl1/du13 as a valuable gene for breeding novel,high-quality soft rice varieties through targeted breeding strategies.

关键词： Rice Dull endosperm Amylose content Wx Breeding

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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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Identification of a von Willebrand factor type A protein affecting both grain and flag leaf morphologies in wheat

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Science China(Life Sciences) 2024年第10期67卷 2283-2286页

作者： Chunyun Zhou Hongchun Xiong Yong Jia Huijun Guo Meiyu Fu Yongdun Xie Linshu Zhao Jiayu Gu Huiyuan Li Yuting Li Peiyong Xin Jinfang Chu Chengdao Li Luxiang Liu State Key laboratory of Crop Gene Resources and Breeding/national Engineering laboratory of Crop molecular Breeding/CAEA Research and Development Centre on Nuclear Technology Applications for Irradiation Mutation Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Western Crop genetics Alliance College of ScienceHealthEngineering and EducationMurdoch UniversityPerthWA 6150Australia national Centre for plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Dear Editor,The world faces unprecedented challenges for crop yield improvement to feed an expanding human population under limited agricultural resources and an increasingly erratic climate(Wheeler and von Braun,2013).Bread wheat is one of the most widely cultivated cereal crops,with both grain and flag leaf morphologies determining final yield potential(Xie et al.,2015;Zanella et al.,2023).Candidate genes affecting these traits are therefore highly desirable targets for breeding programs.

关键词： breeding crops cultivated

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Genetic and lipidomic analyses reveal the key role of lipid metabolism for cold tolerance in maize

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Journal of genetics and Genomics 2024年第3期51卷 326-337页

作者： Lei Gao Haifang Jiang Minze Li Danfeng Wang Hongtao Xiang Rong Zeng Limei Chen Xiaoyan Zhang Jianru Zuo Shuhua Yang Yiting Shi State Key laboratory of plant Environmental Resilience College of Biological SciencesFrontiers Science Center for Molecular Design BreedingCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key laboratory of Wheat&Maize Crop Science College of Life SciencesHenan Agricultural UniversityZhengzhouHenan 450002China State Key laboratory of plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Suihua Branch of Heilongjiang Academy of Agricultural Machinery Sciences SuihuaHeilongjiang 152052China

Lipid remodeling is crucial for cold tolerance in ***,the precise alternations of lipidomics during cold responses remain elusive,especially in maize(Zea mays L.).In addition,the key genes responsible for cold tolerance in maize lipid metabolism have not been ***,we integrate lipidomic,transcriptomic,and genetic analysis to determine the profile of lipid remodeling caused by cold *** find that the homeostasis of cellular lipid metabolism is essential for maintaining cold tolerance of ***,we detect 210 lipid species belonging to 13 major classes,covering phospholipids,glycerides,glycolipids,and free fatty *** lipid metabolites undergo specific and selective alterations in response to cold stress,especially mono-/di-unsaturated lysophosphatidic acid,lysophosphatidylcholine,phosphatidylcholine,and phosphatidylinositol,as well as polyunsaturated phosphatidic acid,monogalactosyldiacylglycerol,diacylglycerol,and *** addition,we identify a subset of key enzymes,including ketoacyl-acyl-carrier protein synthase II(KAS II),acyl-carrier protein 2(ACP2),male sterility33(Ms33),and stearoyl-acyl-carrier protein desaturase 2(SAD2)involved in glycerolipid biosynthetic pathways are positive regulators of maize cold *** results reveal a comprehensive lipidomic profile during the cold response of maize and provide genetic resources for enhancing cold tolerance in crops.

关键词： Maize Cold stress Lipid metabolism Transcriptome Lipidomic

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Searching for plant NLR immune receptors conferring resistance to potyviruses

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The Crop Journal 2024年第1期12卷 28-44页

作者： Xin Hong Shufen Li Xiaofei Cheng Haijian Zhi Jinlong Yin Kai Xu Jiangsu Key laboratory for Microbes and Functional Genomics Jiangsu Engineering and Technology Research Center for MicrobiologyCollege of Life SciencesNanjing Normal UniversityNanjing 210023JiangsuChina College of plant Protection Northeast Agricultural UniversityHarbin 150030HeilongjiangChina national Center for Soybean Improvement National Key Laboratory for Crop Genetics and Germplasm EnhancementKey Laboratory of Biology and Genetic Improvement of Soybean-Ministry of AgricultureNanjing Agricultural UniversityNanjing 210095JiangsuChina

To fight against invasion by pathogens,plants have evolved an elaborate innate immune system,of which the nucleotide-binding domain leucine-rich repeat-containing receptor(NLR)acts as the sensor and immune ***,comprising one of the largest genera of plant viruses,cause severe crop yield losses *** crop resistance to potyviruses can be used in breeding and plant transgenesis to control disease *** review summarizes achievements in mapping and cloning NLR genes conferring dominant resistance against potyvirus in the families Fabaceae,Solanaceae,Brassicaceae,and *** compares mechanisms of potyviral protein recognition and downstream signaling employed by NLRs and discusses strategies for exploiting NLRs to better control diseases caused by potyviruses.

关键词： NLR Potyvirus resistance Genetic diversity Mapping Engineer

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plant gene co-expression defines the biosynthetic pathway of neuroactive alkaloids

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molecular plant 2024年第3期17卷 372-374页

作者： Fang Liu' Alisdair R.Fernie Youjun Zhang Key laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of Sciences100101 BeijingChina Max Planck Institute of molecular plant Physiology Am Muhlenberg 114476 Potsdam-GolmGermany Center for plant Systems Biology and Biotechnology 4000 PlovdivBulgaria University of Chinese Academy of Sciences 100049 BeijingChina

Transcriptomes comprise gene co-expression clustersor modules,showcasing distinct patterns of coordinated expression among groups of genes across independent biological samples(Serin et al.,2016).The"guilt-by-association"hypothesis suggests the functional importance of these clusters;for example,co-expressed genes associated with metabolism typically contain genes encoding several enzymes associated with the same pathways.

关键词： metabolism alkaloids

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Pyruvate kinase M in germ cells is essential for sperm motility and male fertility but not spermatogenesis

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Asian Journal of Andrology 2024年第2期26卷 212-219页

作者： Gao-Qing Qian Xiao-Chen Wang Xi Zhang Bin Shen Qiang Liu State Key laboratory of Reproductive Medicine and Offspring Health Nanjing Medical UniversityNanjing 211166China Shanghai Key laboratory of Reproductive Medicine Department of HistoembryologyGenetics and Developmental BiologyShanghai Jiao Tong University School of MedicineShanghai 200025China State Key laboratory of molecular Biology Shanghai Key Laboratory of Molecular AndrologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 200031China

Male germ cells employ specific metabolic pathways throughout their developmental *** a previous study,we discovered heightened expression of pyruvate kinase M(PKM),a pivotal glycolytic enzyme,in spermatogonia and *** gain deeper insights into PKM's roles in spermatogenesis,sperm function,and male fertility,we engineered a conditional-knockout mouse model(Pkm-vkO mice)to selectively disrupt the Pkm gene within germ *** maintaining regular testicular histology and sperm morphology,the male Pkm-vko mice were infertility,characterized by significant impairments in sperm motility and adenosine triphosphate(ATP)*** addition,Pkm-null spermatozoa exhibited similar deficits in protein tyrosine phosphorylation linked to capacitation,as well as compromised performance in in vitro fertilization *** conclude,PKM's presence is not obligatory for the entirety of spermatogenesis in male germ cells;however,it emerges as a critical factor influencing sperm motility and overall male fertility.

关键词： glycolysis male fertility pyruvate kinase M sperm motility spermatogenesis

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Two diversities meet in the rhizosphere:root specialized metabolites and microbiome

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Journal of genetics and Genomics 2024年第5期51卷 467-478页

作者： Xiaochen Wang Jingying Zhang Xinjun Lu Yang Bai Guodong Wang State Key laboratory of plant Genomics Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China CAS-JIC Centre of Excellence for plant and Microbial Science Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Hainan Yazhou Bay Seed laboratory SanyaHainan 572025China College of Advanced Agricultural Sciences Chinese Academy of SciencesBeijing 100049China

plants serve as rich repositories of diverse chemical compounds collectively referred to as specialized *** compounds are of importance for adaptive processes,including interactions with various microbes both beneficial and *** microbes as bioreactors,the chemical diversity undergoes dynamic changes when root-derived specialized metabolites(RSMs)and microbes encounter each other in the *** advancements in sequencing techniques and molecular biology tools have not only accelerated the elucidation of biosynthetic pathways of RSMs but also unveiled the significance of RSMs in plant-microbe *** this review,we provide a comprehensive description of the effects of RSMs on microbe assembly in the rhizosphere and the influence of corresponding microbial changes on plant health,incorporating the most up-to-date information ***,we highlight open questions that remain for a deeper understanding of and harnessing the potential of RSM-microbe interactions to enhance plant adaptation to the ***,we propose a pipeline for investigating the intricate associations between root exometabolites and the rhizomicrobiome.

关键词： Root specialized metabolites Microbiome plant-microbe interactions Rhizosphere Diversity

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Phase separation of S-RNase promotes self-incompatibility in Petunia hybrida

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Journal of Integrative plant Biology 2024年第5期66卷 986-1006页

作者： Huayang Tian Hongkui Zhang Huaqiu Huang Yu'e Zhang Yongbiao Xue The State Key laboratory of plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biologythe Chinese Academy of SciencesBeijing 100101China University of the Chinese Academy of Sciences Beijing 100049China Beiing Institute of Genomics Chinese Academy of SciencesNational Center for BioinformationBeijing 100101China

Self-incompatibility(SI)is an intraspecific reproductive barrier widely present in *** SI system with the broadest occurrence in angiosperms is based on an S-RNase linked to a cluster of multiple S-locus F-box(SLF)genes found in the Solanaceae,plantaginaceae,Rosaceae,and *** studies reveal that non-self S-RNase is degraded by the Skip Cullin F-box(SCF)SLF-mediated ubiquitin–proteasome system in a collaborative manner in Petunia,but how self-RNase functions largely remains ***,we show that S-RNases form S-RNase condensates(SRCs)in the self-pollen tube cytoplasm through phase separation and the disruption of SRC formation breaks SI in self-incompatible Petunia *** further find that the pistil SI factors of a small asparagine-rich protein HT-B and thioredoxin h together with a reduced state of the pollen tube all promote the expansion of SRCs,which then sequester several actin-binding proteins,including the actin polymerization factor PhABRACL,the actin polymerization activity of which is reduced by S-RNase in ***,we find that S-RNase variants lacking condensation ability fail to recruit PhABRACL and are unable to induce actin foci formation required for pollen tube growth *** together,our results demonstrate that phase separation of S-RNase promotes SI response in ***,revealing a new mode of S-RNase action.

关键词： self-incompatibility S-RNase phase separation

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Chloroplast immunity: A cornerstone of plant defense

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molecular plant 2024年第5期17卷 686-688页

作者： Jie Liu Pan Gong Ruobin Lu Rosa Lozano-Duran Xueping Zhou Fangfang Li State Key laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100081China State Key laboratory of Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China Department of plant Biochemistry Centre for Plant Molecular Biology(ZMBP)Eberhard Karls UniversityTubingen 72076Germany

Increasing evidence supports the notion that pattern-recognition-receptor-mediated immunity goes beyond plasma membrane-to-nucleus *** the findings of the pathways linking plasma membrane and chloroplasts and the functions of stromules and perinuclear chloroplast clustering(PCC)in plant defense,chloroplast immunity has emerged as a cornerstone of plant defense and a target of plant pathogens.

关键词： plant immunity corners

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