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Two ABCI family transporters,OsABCI15 and OsABCI16,are involved in grain-filling in rice

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Journal of Genetics and Genomics 2024年第5期51卷 492-506页

作者： Bin Ma Xiubiao Cao Xiaoyuan Li Zhong Bian Qi-Qi Zhang Zijun Fang Jiyun Liu Qun Li Qiaoquan Liu Lin Zhang Zuhua He Jiangsu Key laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding laboratory/Key laboratory of plant Functional Genomics of the Ministry of Education/Jiangsu Key laboratory of Crop Genetics and physiology Agricultural College of Yangzhou UniversityYangzhouJiangsu 225009China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Jiangsu Key Laboratory of Crop Genetics and PhysiologyYangzhou UniversityYangzhouJiangsu 225009China National Key laboratory of plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology&EcologyChinese Academy of SciencesShanghai 200032China Institute of biotechnology Hangzhou Academy of Agricultural SciencesHangzhouZhejiang 310024China Joint International Research laboratory of Agriculture and Agri-Product Safety of the Ministry of Education Yangzhou UniversityYangzhouJiangsu 225009China

Seed development is critical for plant reproduction and crop yield,with panicle seed-setting rate,grain-filling,and grain weight being key seed characteristics for yield ***,few genes are known to regulate grain ***,we identify two adenosine triphosphate(ATP)-binding cassette(ABC)I-type transporter genes,OsABCI15 and OsABCI16,involved in rice *** genes are highly expressed in developing seeds,and their proteins are localized to the plasma membrane and ***,knockout of OsABCI15 and OsABCI16 results in a significant reduction in seed-setting rate,caused predominantly by the severe empty pericarp phenotype,which differs from the previously reported low seed-setting phenotype resulting from failed *** analysis indicates that OsABCI15 and OsABCI16 participate in ion homeostasis and likely export ions between filial tissues and maternal tissues during grain ***,overexpression of OsABCI15 and OsABCI16 enhances the seed-setting rate and grain yield in transgenic plants and decreases ion accumulation in brown ***,the OsABCI15/16 orthologues in maize exhibit a similar role in kernel development,as demonstrated by their disruption in transgenic ***,ourﬁndings reveal the important roles of two ABC transporters in cereal grain filling,highlighting their value in crop yield improvement.

关键词： ABC transporters Rice Grain filling Ion homeostasis Grain yield

m^(6)A modification of plant virus enables host recognition by NMD factors in plants

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Science China(Life Sciences) 2024年第1期67卷 161-174页

作者： Hao He Linhao Ge Yalin Chen Siwen Zhao Zhaolei Li Xueping Zhou Fangfang Li State Key laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China State Key laboratory of Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhou 310029China

N^(6)-methyladenosine(m^(6)A)is the most abundant eukaryotic mRNA modification and is involved in various biological *** evidence has implicated that m^(6)Amodification is an important anti-viral defense mechanism in mammals and plants,but it is largely unknown how m^(6)Aregulates viral infection in *** we report the dynamic changes and functional anatomy of m^(6)Ain Nicotiana benthamiana and Solanum lycopersicum during Pepino mosaic virus(PepMV)infection.m^(6)Amodification in the PepMV RNA genome is conserved in these two *** of the m^(6)Awriters,mRNA adenosine methylase A(MTA),and HAKAI inhibit the PepMV RNA accumulation accompanied by increased viral m^(6)Amodifications,whereas deficiency of these writers decreases the viral RNA m^(6)Alevels but enhances virus *** study reveals that the cytoplasmic YTH-domain family protein NbECT2A/2B/2C as m^(6)Areaders are involved in anti-viral ***-protein interactions indicate that NbECT2A/2B/2C interact with nonsense-mediated mRNA decay(NMD)-related proteins,including NbUPF3 and NbSMG7,but not with NbUPF1.m^(6)Amodification-mediated restriction to PepMV infection is dependent on NMD-related *** findings provide new insights into the functionality of m^(6)Aanti-viral activity and reveal a distinct immune response that NMD factors recognize the m^(6)Areaders-viral m^(6)ARNA complex for viral RNA degradation to limit virus infection in plants.

关键词： m^(6)A Pepino mosaic virus plant defense m^(6)A readers NMD factors

Turnip mosaic virus pathogenesis and host resistance mechanisms in Brassica

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Horticultural plant Journal 2024年第4期10卷 947-960页

作者： Guanwei Wu Xinxin Fang Tianqi Yu Jianping Chen Fei Yan State Key laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Plant VirologyNingbo UniversityNingboZhejiang 315211China Key laboratory of biotechnology in plant Protection of MARA and Zhejiang Province Institute of Plant VirologyNingbo UniversityNingboZhejiang 315211China

Turnip mosaic virus(TuMV)is a devastating potyvirus pathogen that infects a wide variety of both cultivated and wild Brassicaceae *** urgently need more information and understanding of TuMV pathogenesis and the host responses involved in disease development in cruciferous *** displays great versatility in viral pathogenesis,especially in its replication and intercellular ***,in the coevolutionary arms races between TuMV and its hosts,the virus has evolved to co-opt host factors to facilitate its infection and counter host defense *** review mainly focuses on recent advances in understanding the viral factors that contribute to the TuMV infection cycle and the host resistance mechanism in ***,we propose some future research directions on TuMV pathogenesis and control strategies to design durable TuMV-resistant Brassica crops.

关键词： Turnip mosaic virus Brassica Resistance genes Host factors Infection biology

Two viral proteins translated from one open reading frame target different layers of plant defense

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plant Communications 2024年第4期5卷 177-193页

作者： Yuzhen Mei Tao Hu Yaqin Wang Rosa Lozano-Duran Xiuling Yang Xueping Zhou State Key laboratory of Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China State Key laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Department of plant Biochemistry Center for Plant Molecular Biology(ZMBP)Eberhard Karls University72076 TubingenGermany

Multilayered defense responses are activated upon pathogen *** utilize a number of strategies to maximize the coding capacity of their small genomes and produce viral proteins for infection,including suppression of host ***,we reveal translation leakage as one of these strategies:two viral effec-tors encoded by tomato golden mosaic virus,chloroplast-localized C4(cC4)and membrane-associated C4(mC4),are translated from two in-frame start codons and function cooperatively to suppress ***4 localizes in chloroplasts,to which it recruits NbPUB4 to induce ubiquitination of the outer membrane;as a result,this organelle is degraded,and chloroplast-mediated defenses are ***,chloroplast-localized cC4 induces the production of singlet oxygen(1O2),which in turn promotes translo-cation of the 1O2 sensor NbMBS1 from the cytosol to the nucleus,where it activates expression of the CERK1 ***,an antiviral effect exerted by CERK1 is countered by mC4,localized at the plasma ***4,like cC4,recruits NbPUB4 and promotes the ubiquitination and subsequent degradation of CERK1,suppressing membrane-based,receptor-like kinase-dependent ***,this translation leakage strategy seems to be conserved in multiple viral species and is related to host *** suggests that stacking of different cellular antiviral responses could be an effective way to abrogate viral infection and engineer sustainable resistance to major crop viral diseases in thefield.

关键词： geminivirus C4 PUB4 CERK1 subcellular localization antiviral defense

Perenniality:From model plants to applications in agriculture

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Molecular plant 2024年第1期17卷 141-157页

作者： Bo Zhao Jia-Wei Wang National Key laboratory of plant Molecular Genetics CAS Center for Excellence in Molecular Plant Sciences(CEMPS)Institute of Plant Physiology and Ecology(SIPPE)Chinese Academy of Sciences(CAS)Shanghai 200032China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China Key laboratory of plant Carbon Capture CASShanghai 200032China New Cornerstone Science laboratory Shanghai 200032China

To compensate for their sessile nature,plants have evolved sophisticated mechanisms enabling them to adapt to ever-changing *** such prominent feature is the evolution of diverse life history strategies,particularly such that annuals reproduce once followed by seasonal death,while perennials live longer by cycling growth *** intrinsic phenology is primarily genetic and can be altered by environmental *** evolutionary transitions between annual and perennial life history strategies are common,perennials account for most species in nature because they survive well under year-round *** proportion,however,is reversed in ***,perennial crops promise to likewise protect and enhance the resilience of agricultural ecosystems in response to climate *** significant endeavors that have been made to generate perennial crops,progress is slow because of barriers in studying perennials,and many developed species await further *** findings in model species have illustrated that simply rewiring existing genetic networks can lead to lifestyle *** implies that engineering plant life history strategy can be achieved by manipulating only a few key *** this review,we summarize our current understanding of genetic basis of perenniality and discuss major questions and challenges that remain to be addressed.

关键词： perenniality developmental plasticity flowering time poplar Arabis alpina perennial crops life history strategy

The super-pangenome of Populus unveils genomic facets for its adaptation and diversification in widespread forest trees

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Molecular plant 2024年第5期17卷 725-746页

作者： Tingting Shi Xinxin Zhang Yukang Hou Changfu Jia Xuming Dan Yulin Zhang Yuanzhong Jiang Qiang Lai Jiajun Feng Jianju Feng Tao Ma Jiali Wu Shuyu Liu Lei Zhang Zhiqin Long Liyang Chen Nathaniel R.Street Par K.Ingvarsson Jianquan Liu Tongming Yin Jing Wang Key laboratory for Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduSichuanChina College of Horticulture and Forestry Tarim UniversityAlar 843300China Umea plant Science Centre Department of Plant PhysiologyUmea UniversityUmeaVasterbottenSweden Linnean Centre for plant Biology Department of Plant BiologyUppsala BioCenterSwedish University of Agricultural SciencesUppsalaSweden The Key laboratory of Tree Genetics and biotechnology of Jiangsu Province and Education Department of China Nanjing Forestry UniversityNanjingJiangsuChina

Understanding the underlying mechanisms and links between genome evolution and adaptive innovations stands as a key goal in evolutionary ***,among the world’s most widely distributed and cultivated trees,exhibit extensive phenotypic diversity and environmental *** this study,we present a genus-level super-pangenome comprising 19 Populus genomes,revealing the likely pivotal role of private genes in facilitating local environmental and climate *** the integration of pangenomes with transcriptomes,methylomes,and chromatin accessibility mapping,we unveil that the evolutionary trajectories of pangenes and duplicated genes are closely linked to local genomic landscapes of regulatory and epigenetic architectures,notably CG methylation in gene-body *** comparative genomic analyses have enabled the identification of 142202 structural variants across species that intersect with a significant number of genes and contribute substantially to both phenotypic and adaptive *** have experimentally validated a∼180-bp presence/absence variant affecting the expression of the CUC2 gene,crucial for leaf serration ***,we developed a user-friendly web-based tool encompassing the multi-omics resources associated with the Populus super-pangenome(http://***).Together,the present pioneering super-pangenome resource in forest trees not only aids in the advancement of breeding efforts of this globally important tree genus but also offers valuable insights into potential avenues for comprehending tree biology.

关键词： Populus pangenomes whole-genome duplication structural variation genome evolution

How plants sense and respond to osmotic stress

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Journal of Integrative plant Biology 2024年第3期66卷 394-423页

作者： Bo Yu Dai-Yin Chao Yang Zhao Shanghai Center for plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesThe Chinese Academy of SciencesShanghai 200032China Key laboratory of plant Carbon Capture The Chinese Academy of SciencesShanghai 200032China National Key laboratory of plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and EcologyThe Chinese Academy of SciencesShanghai 200032China University of Chinese Academy of Sciences Beijing 100049China

Drought is one of the most serious abiotic stresses to land *** sense and respond to drought stress to survive under water *** have studied how plants sense drought stress,or osmotic stress caused by drought,ever since Charles Darwin,and gradually obtained clues about osmotic stress sensing and signaling in *** stress is a physical stimulus that triggers many physiological changes at the cellular level,including changes in turgor,cell wall stiffness and integrity,membrane tension,and cell fluid volume,and plants may sense some of these stimuli and trigger downstream *** this review,we emphasized water potential and movements in organisms,compared putative signal inputs in cell wall-containing and cell wall-free organisms,prospected how plants sense changes in turgor,membrane tension,and cell fluid volume under osmotic stress according to advances in plants,animals,yeasts,and bacteria,summarized multilevel biochemical and physiological signal outputs,such as plasma membrane nanodomain formation,membrane water permeability,root hydrotropism,root halotropism,Casparian strip and suberin lamellae,and finally proposed a hypothesis that osmotic stress responses are likely to be a cocktail of signaling mediated by multiple *** also discussed the core scientific questions,provided perspective about the future directions in this field,and highlighted the importance of robust and smart root systems and efficient source-sink allocations for generating future high-yield stress-resistant crops and plants.

关键词： cell volume drought membrane tension osmotic stress turgor

IbNIEL-mediated degradation of IbNAC087 regulates jasmonic acid-dependent salt and drought tolerance in sweet potato

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Journal of Integrative plant Biology 2024年第2期66卷 176-195页

作者： Xu Li Zhen Wang Sifan Sun Zhuoru Dai Jun Zhang Wenbin Wang Kui Peng Wenhao Geng Shuanghong Xia Qingchang Liu Hong Zhai Shaopei Gao Ning Zhao Feng Tian Huan Zhang Shaozhen He Key laboratory of Sweet Potato Biology and biotechnology Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis&Utilization and Joint Laboratory for International Cooperation in Crop Molecular BreedingMinistry of EducationCollege of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025China State Key laboratory of plant physiology and Biochemistry National Maize Improvement CenterKey Laboratory of Biology and Genetic Improvement of MaizeBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Sweet potato(Ipomoea batatas[L.]Lam.)is a crucial staple and bioenergy *** abiotic stress tolerance holds significant importance in fully utilizing marginal *** processes regulate abiotic stress responses,yet the molecular regulatory mechanisms in sweet potato remain *** this study,a NAC(NAM,ATAF1/2,and CUC2)transcription factor,IbNAC087,was identified,which is commonly upregulated in salt-and drought-tolerant *** of IbNAC087 increased salt and drought tolerance by increasing jasmonic acid(JA)accumulation and activating reactive oxygen species(ROS)scavenging,whereas silencing this gene resulted in opposite ***-rich IbNAC087-OE(overexpression)plants exhibited more stomatal closure than wild-type(WT)and IbNAC087-Ri plants under NaCl,polyethylene glycol,and methyl jasmonate ***087 functions as a nuclear transcriptional activator and directly activates the expression of the key JA biosynthesisrelated genes lipoxygenase(IbLOX)and allene oxide synthase(IbAOS).Moreover,IbNAC087 physically interacted with a RING-type E3 ubiquitin ligase NAC087-INTERACTING E3 LIGASE(IbNIEL),negatively regulating salt and drought tolerance in sweet *** ubiquitinated IbNAC087 to promote 26S proteasome degradation,which weakened its activation on IbLOX and *** findings provide insights into the mechanism underlying the IbNIEL-IbNAC087 module regulation of JA-dependent salt and drought response in sweet potato and provide candidate genes for improving abiotic stress tolerance in crops.

关键词： abiotic tolerance IbNAC087 IbNIEL JA sweet potato

Proxitome profiling reveals a conserved SGT1- NSL1 signaling module that activates NLRmediated immunity

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Molecular plant 2024年第9期17卷 1369-1391页

作者： Dingliang Zhang Xinxin Yang Zhiyan Wen Zhen Li Xinyu Zhang Chenchen Zhong Jiajie She Qianshen Zhang He Zhang Wenli Li Xiaoyun Zhao Mingliang Xu Zhen Su Dawei Li Savithramma P.Dinesh-Kumar Yongliang Zhang State Key laboratory of plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100193China Department of plant Biology and The Genome Center College of Biological SciencesUniversity of CaliforniaDavisDavisCA 95616USA State Key laboratory of plant Environmental Resilience College of Agronomy and BiotechnologyChina Agricultural UniversityBejing 100193China

Suppressor of G2 allele of skp1(SGT1)is a highly conserved eukaryotic protein that plays a vital role in growth,development,and immunity in both animals and *** some SGT1 interactors have been identified,the molecular regulatory network of SGT1 remains ***1 serves as a co-chaperone to stabilize protein complexes such as the nucleotide-binding leucine-rich repeat(NLR)class of immune receptors,thereby positively regulating plant ***1 has also been found to be asso-ciated with the SKP1-Cullin-F-box(SCF)E3 ubiquitin ligase ***,whether SGT1 targets im-mune repressors to coordinate plant immune activation remains *** this study,we constructed a toolbox for TurbolD-and split-TurbolD-based proximity labeling(PL)assays in Nicotiana benthamiana and used the PL toolbox to explore the SGT1 interactome during pre-and post-immune *** comprehensive SGT1 interactome network we identified highlights a dynamic shift from proteins associ-ated with plant development to those linked with plant immune *** found that SGT1 interacts with Necrotic Spotted Lesion1(NSL1),which negatively regulates salicylic acid-mediated defenseby inter-fering with the nucleocytoplasmic trafficking of non-expressor of pathogenesis-related genes 1(NPR1)during N NLR-mediated response to tobacco mosaic ***1 promotes the SCF-dependent degrada-tion of NSL1 to facilitate immune activation,while salicylate-induced protein kinase-mediated phosphory-lation of SGT1further potentiates this *** NNLR,NSL1also functions in several other NLR-mediated ***,our study unveils the regulatory landscape of SGT1 and reveals a novel SGT1-NSL1 signaling module that orchestrates plant innate immunity.

关键词： suppressor of G2 allele of skp1 SGT1 proximity labeling N NLR immune receptor Necrotic Spotted Lesion 1 NSL1 salicylic acid ubiquitination