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Disruption of Energy Metabolism and Reactive Oxygen Species Homeostasis in Honglian Type-Cytoplasmic Male Sterility(HL-CMS)rice Pollen

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rice science 2025年第1期32卷 81-93,I0056-I0058页

作者： WANG Mingyue ZHAO Weibo FENG Xiaoya CHEN Yi LI Junhao FU Jinmei YAN Yingchun CHU Zhaohui HUANG Wenchao State Key Laboratory of Hybrid rice Key Laboratory for Research and Utilization of Heterosis in Indica Ricethe Ministry of Agriculture and Rural Affairs/Department of GeneticsCollege of Life SciencesWuhan UniversityWuhan 430072China

Honglian type-cytoplasmic male sterility(HL-CMS)is caused by the inter-communication between the nucleus and ***,the mechanisms by which sterility genes regulate metabolic alterations and changes in mitochondrial morphology in the pollen of HL-CMS remain *** this study,we compared the morphological differences between the pollen of the male sterile line YA and the near-isogenic line NIL-Rf6 using hematoxylin-eosin staining and 4ʹ,6-diamidino-2-phenylindole(DAPI)***-CMS is characterized by gametophytic sterility,where the aborted pollen grains are empty,and the tapetal layer remains *** electron microscopy was employed to observe mitochondrial morphological changes at the microspore stage,revealing significant mitochondrial alterations,characterized by the formation of'large spherical mitochondria',occurred at the binucleate stage in the YA ***,metabolomics analysis revealed decreased levels of metabolites associated with the carbohydrate and flavonoid ***,the decrease in flavonoids was found to contribute to an elevation in reactive oxygen species(ROS)***,we propose a model in which rice fertility is modulated by the levels of pollen carbohydrates and flavonoid metabolites,with impaired mitochondrial energy production and reduced flavonoid biosynthesis as the main causes of ROS accumulation and pollen abortion in rice.

关键词： cytoplasmic male sterility pollen reactive oxygen species rice mitochondrial metabolite

HAG1 Regulates Arsenic Allocation and Accumulation in rice Grains

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rice science 2025年第1期32卷 1-5,I0001-I0009页

作者： YANG Huan YU Jing XIE Manyi XU Ping CAO Zhenzhen CHEN Mingxue CAO Zhaoyun rice Product Quality Inspection and Supervision Center Ministry of Agriculture and Rural AffairsChina National Rice Research InstituteHangzhou 310006China

rice is a well-recognized accumulator of arsenic(As),which poses a threat to food security and human *** rice varieties vary widely in their As accumulation and tolerance,yet the underlying genetic basis remains *** this study,we isolated a rice mutant hag1,which displayed high accumulation of As in rice grains and increased sensitivity to As *** genetic investigation,we identified the ATP-binding cassette(ABC)transporter OsABCC1,involved in sequestering As in vacuoles,as the causal gene responsible for As allocation and tolerance in *** physiological analysis revealed that As stress caused more severe oxidative damage in hag1 compared with the wild type(WT).The hag1 mutant displayed different accumulation patterns depending on the levels of As *** discovered that under low As concentration,hag1 synthesized more thiol compounds and exhibited lower As translocation than the WT;however,at high As levels,hag1 produced fewer thiol compounds and increased As transfer *** analysis of the node nearest to the panicles revealed that OsABCC1 was down-regulated in hag1,resulting in increased As translocation and accumulation in rice ***,natural variations in the promoter of OsABCC1 may confer differential gene expression and distinct As accumulations in grains between japonica and indica rice varieties,providing insights for breeding low-As rice varieties.

关键词： breeding grains insight

Breeding for Heat Tolerant Aromatic rice Varieties and Identification of Novel QTL Regions Associated with Heat Tolerance During Reproductive Phase by QTL-Seq

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rice science 2025年第1期32卷 67-80,I0050-I0055页

作者： Surangkana CHIMTHAI Sulaiman CHEABU Wanchana AESOMNUK Siriphat RUENGPHAYAK Siwaret ARIKIT Apichart VANAVICHIT Chanate MALUMPONG Department of Agronomy Faculty of Agriculture at Kamphaeng SaenKasetsart UniversityNakhon Pathom 73140Thailand Faculty of Agriculture Princess of Naradhiwas UniversityNaradhiwas 96000Thailand rice Science Center&rice Gene Discovery Unit Kasetsart UniversityKamphaeng Sean CampusNakhon Pathom 73140Thailand

Extremely high temperatures resulting from climate change have become a major challenge for increasing rice ***,our objective was to develop heat-tolerant aromatic rice varieties using the pedigree method,focusing on selecting for seed-setting ability under extremely high temperatures along with the use of single nucleotide polymorphism/insertion and deletion(SNP/InDel)markers to improve aromatic properties and grain ***,the QTL-seq approach was utilized to identify QTLs for seed-setting rate in an F2 population subjected to heat *** candidate QTL regions were then aligned to confirm SNPs/InDels in synonymous F7 candidate heat-tolerant *** results revealed that four promising lines,namely 84-7-1-9,84-7-1-10,159-3-3-1,and 159-3-3-10,were classified as heat-tolerant with low amylose *** addition,lines 84-7-1-9 and 84-7-1-10 were identified as aromatic rice encompassing the aroma gene(badh2).Regarding the QTL-seq results,the qSF2.1 region ranged from 311051 to 3929422 bp on chromosome 2,was identified based on the highest contrasting SNP index between the heat-susceptible and tolerant *** candidate genes within this region include two genes related to heat shock proteins,three genes associated with pollen fertility,and four genes involved in heat stress and other abiotic stress *** genes are proposed as potential candidates for heat tolerance and could serve as targets in rice breeding programs aimed at enhancing heat tolerance.

关键词： rice heat stress aroma,QTL-seq

Mixture of Bacillus Amyloliquefaciens and Bacillus Pumilus Modulates Community Structures of rice Rhizosphere Soil to Suppress rice Seedling Blight

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rice science 2025年第1期32卷 118-130,I0067-I0070页

作者： JIANG Nan QIU Jiehua TIAN Dagang SHI Huanbin LIU Zhiquan WEN Hui XIE Shuwei CHEN Huizhe WU Meng KOU Yanjun State Key Laboratory of rice Biology and Breeding China National Rice Research InstituteHangzhou 311400China Biotechnology Research Institute Fujian Academy of Agricultural SciencesFuzhou 350003China State Key Laboratory of Soil and Sustainable Agriculture the Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

rice seedling blight,caused by various fungi,including Fusarium oxysporum,poses a severe threat to rice *** awareness grows regarding the environmental and safety hazards associated with the application of fungicides for managing rice seedling blight,there has been a shift in focus towards biological control *** this study,we isolated biocontrol bacteria from paddy fields that significantly inhibited the growth of *** in vitro and identified the strains as Bacillus amyloliquefaciens T40 and Bacillus pumilus ***,our findings indicated that the combined application of these Bacillus strains in soil was more effective in reducing the incidence of rice seedling blight than their individual *** of 16S and internal transcribed spacer rRNA gene sequencing data revealed that the mixture of the T40 and T208 strains exhibited the lowest average clustering coefficients,which were negatively correlated with the biomass of ***-inoculated rice ***,this mixture led to higher stochastic assembly(average|βNTI|rice rhizosphere bacteria compared with individual strain *** mixture of the T40 and T208 strains also significantly increased the expression of defense-related *** conclusion,the mixture of the T40 and T208 strains effectively modulates microbial community structures,enhances microbial network stability,and boosts the resistance against rice seedling *** study supports the development and utilization of biological resources for crop protection.

关键词： application strategy disease control disease resistance microbial community structure microbial community assembly process Oryza sativa

A major facilitator superfamily transporter PlMFS1 contributes to growth,oosporogenesis,and pathogenesis of Peronophythora litchii

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Horticultural Plant Journal 2025年第1期11卷 189-198页

作者： Pinggen Xi Tianfang Guan Xiyuan Liu Xiaofeng Li Ziyuan Dou Liyun Shi Jiamin Huang Liqun Jiang Junjian Situ Minhui Li Guanghui Kong Zide Jiang Guangdong Province Key Laboratory of Microbial Signals and Disease Control/Department of Plant Pathology South China Agricultural UniversityGuangzhouGuangdong 510642China rice Research Institute Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice BreedingGuangzhouGuangdong 510640China

Major facilitator superfamily(MFS)transporters are secondary active membrane transporters that play an important role in solute interchange and energy *** litchii causes the most destructive disease on lichi,litchi downy ***90 was reported as a key oosporogenesis ***,we identified an MFS transporter gene PlMFS1,which is up-regulated during oospore formation at the late infection stage,while down-regulated in the PlM90 *** investigate PlMFS1 function,we generated PlMFS1knockout mutants using CRISPR/Cas9-mediated genome editing *** with the wild-type strain SHS3,PlMFS1 deletion impaired mycelium growth,zoospore release,oospore production and ***,PlMFS1 deletion significantly affected *** utilization of fructose,lactose and maltose,and may be the PlMFS1 mechanism involved in mycelial ***1 gene deletion also led to deceased laccase activity,laccase-encoding gene downregulation and impaired *** *** our knowledge,this is the first report of an MFS transporter involved in sugar utilization,sexual reproduction,asexual reproduction and pathogenesis in oomycetes.

关键词： Peronophythora litchii Major facilitator superfamily Oospore Pathogenicity

The miR172a–SNB module orchestrates both induced and adult-plant resistance to multiple diseases via MYB30-mediated lignin accumulation in rice

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Molecular Plant 2025年第1期18卷 59-75页

作者： He Wang Zhe-Xu Wang Hong-Yuan Tian Yu-Long Zeng Hao Xue Wan-Ting Mao Lu-Yue Zhang Jun-Ni Chen Xiang Lu Yong Zhu Guo-Bang Li Zhi-Xue Zhao Ji-Wei Zhang Yan-Yan Huang Jing Fan Pei-Zhou Xu Xiao-Qiong Chen Wei-Tao Li Xian-Jun Wu Wen-Ming Wang Yan Li State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural UniversityChengdu 611130China rice Research Institute and Key Lab for Major Crop Diseases Sichuan Agricultural UniversityChengduChina

Plants mount induced resistance and adult-plant resistance against different pathogens throughout the whole growth *** production faces threats from multiple major diseases,including rice blast,sheath blight,and bacterial leaf ***,we report that the miR172a–SNB–MYB30 module regulates both induced and adult-plant resistance to these three major diseases via lignification in ***,pathogen infections induce the expression of miR172a,which downregulates the transcription factor SNB to release its suppression of MYB30,leading to an increase in lignin biosynthesis and disease resistance throughout the whole growth ***,expression levels of miR172a and MYB30 gradually increase and are consistently correlated with lignin contents and disease resistance during rice development,reaching a peak at full maturity,whereas SNB RNA levels are negatively correlated with lignin contents and disease resistance,indicating the involvement of the miR172a–SNB–MYB30 module in adult-plant *** functional domain of SNB protein and its binding sites in the MYB30 promoter are highly conserved among more than 4000 rice accessions,while abnormal expression of miR172a,SNB,or MYB30 compromises yield traits,suggesting artificial selection of the miR172a–SNB–MYB30 module during rice *** together,these results reveal a novel role for a conserved miRNA-regulated module that contributes significantly to induced and adult-plant resistance against multiple pathogens by increasing lignin accumulation,deepening our understanding of broad-spectrum resistance and adult-plant resistance.

关键词： miR172a SNB MYB30 lignin induced resistance adult-plant resistance

OsbZIP27 coordinates with OsHUB1 and OsHUB2 to modulate drought tolerance in rice

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Journal of Genetics and Genomics 2025年第2期52卷 168-178页

作者： Zuntao Xu Yachun Yang Fei Zhang Hao Li Hui Ma Wenge Wu Yong Ding Anhui Province Key Laboratory of rice Genetics and Breeding Rice Research InstituteAnhui Academy of Agricultural SciencesHefeiAnhui 230031China Biological Breeding Laboratory of Anhui Province HefeiAnhui 230031China Ministry of Education Key Laboratory for Membraneless Organelles and Cellular Dynamics HefeiAnhui 230027China School of Life Sciences University of Science and Technology of ChinaHefeiAnhui 230027China The Grain Industry Research Institute of Anhui Agricultural University HefeiAnhui 230036China

Histone H2B ubiquitination(H2Bub)is positively linked to transcriptional activation,but the genetic programs affected by H2Bub to enhance drought tolerance remain largely ***,we show that OsbZIP27 interacts directly with OsHUB1/2 to regulate drought tolerance in rice by binding to the promoters of OsHAK1 and OsGLN1 to achieve H2Bub and transcriptional ***,mutations in OsbZIP27 reduce transcription of OsHAK1 and OsGLN1,resulting in increased sensitivity to drought ***,loss of OsHUB1 and OsHUB2 function causes hypersensitivity to drought stress,whereas OsHUB2 overexpression enhances drought ***,our results indicate that OsbZIP27 coordinates with OsHUB1/2 to enhance rice drought tolerance by increasing H2Bub and expression of OsHAK1 and OsGLN1.

关键词： H2B monoubiquitination Drought stress bZIP transcription factor Ring domain protein Potassium transporter Glucanase

Leucine-Rich Repeat Protein Family Regulates Stress Tolerance and Development in Plants

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rice science 2025年第1期32卷 32-43页

作者： HAO Zhiqi WANG Tingyi CHEN Dongdong SHEN Lan ZHANG Guangheng QIAN Qian ZHU Li State Key Laboratory of rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Yazhouwan National Laboratory Sanya 572024China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China

The leucine-rich repeat(LRR)protein family is involved in a variety of fundamental metabolic and signaling processes in plants,including growth and defense *** proteins can be divided into two categories:those containing LRR domains along with other structural elements,which are further subdivided into five groups,LRR receptor-like kinases,LRR receptor-like proteins,nucleotide-binding site LRR proteins,LRR-extensin proteins,and polygalacturonase-inhibiting proteins,and those containing only LRR ***,various LRR proteins are primarily involved in plant development and responses to environmental ***,the LRR protein family plays a central role in signal transduction pathways related to stress *** this review,we classify and analyze the functions of LRR proteins in *** extensive research has been conducted on the roles of LRR proteins in disease resistance signaling,these proteins also play important roles in abiotic stress *** review highlights recent advances in understanding how LRR proteins mediate responses to biotic and abiotic *** upon these insights,further exploration of the roles of LRR proteins in abiotic stress resistance may aid efforts to develop rice varieties with enhanced stress and disease tolerance.

关键词： leucine-rich repeat classification function stress tolerance plant development

The regulatory network and critical factors promoting programmed cell death during embryogenesis

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Journal of Integrative Plant Biology 2025年第1期67卷 55-70页

作者： An Luo Ce Shi Pan Luo Zifu Zhao Meng-Xiang Sun College of Life Sciences Yangtze UniversityJingzhou 434023China State Key Laboratory of Hybrid rice College of Life SciencesWuhan UniversityWuhan 430072China

Programmed cell death(PCD)is essential for animal and plant ***,the knowledge of the mechanism regulating PCD in plants remains limited,largely due to technical ***,we determined that the protease NtCP14 could trigger PCD in the embryonic suspensor of tobacco(Nicotiana tabacum),providing a unique opportunity to overcome the limitations by creating synchronous two-celled proembryos with ongoing PCD for transcriptome analysis and regulatory factor ***,we performed comparative transcriptome analysis using isolated two-celled proembryos and explored the potential regulatory network underlying NtCP14-triggered *** phytohormones,calcium,microtubule organization,the immunity system,soluble N-ethylmaleimide-sensitive factor attachment protein receptor proteins,long non-coding RNAs and alternative splicing are addressed as critical factors involved in the early stage of suspensor *** thought to play crucial roles in suspensor PCD are ***,decreased antioxidant gene expression and increased reactive oxygen species(ROS)levels during suspensor PCD suggest a critical role for ROS signaling in the initiation of NtCP14-triggered ***,five genes in the regulatory network are recommended as immediate downstream elements of ***,our analysis outlines an overall molecular network underlying protease-triggered PCD and provides a reliable database and valuable clues for targeting elements immediately downstream of NtCP14 to overcome technical bottlenecks and gain deep insight into the molecular mechanism regulating plant PCD.

关键词： programmed cell death protease reactive oxygen species suspensor transcriptome