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TavWA1 is critical for wheat growth by modulating cell morphology and arrangement

Journal of Integrative Plant Biology 2025年第1期67卷 71-86页

作者： Guowei Chang Yue Li Lei Peng Chuncai Shen Yipeng Lu Wan Teng Yangyang Liu Yingchun Wang Weiqi Zhu Cuimin Liu Xue He Yiping Tong Xueqiang Zhao Key Laboratory of seed Innovation Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Zhaoxian Experiment Station Shijiazhuang Academy of Agricultural and Forestry SciencesZhaoxian 515300China

Plant growth is determined by the production of cells and initiation of new *** genes that control cell number and cell size is of great significance for understanding plant growth *** this study,we characterized two wheat mutants,ah and dl,with abnormal *** ah mutant is a naturally occurring variant characterized by severe dwarfism,increased tiller number,and reduced grain length,while the dl mutant is derived from an ethyl methane sulfonate(EMS)-mutagenized population and exhibits smaller grain size and slightly reduced plant *** analyses revealed abnormal cell number,cell morphology and arrangement in the stems and leaves of the ah mutant,along with reduced cell length in the grains of the dl ***-based cloning identified that both mutants carry mutations in the same gene TavWA1-7D,which encodes a protein with a von Willebrand factor A(vWA)*** ah mutant harbors a 174-bp insertion in the 1,402-bp coding sequence(CDS)of TavWA1-7D,causing premature termination of protein translation,while the dl mutant contains a Glu420Lys *** the TavWA1-7D ahthrough clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated nuclease 9-mediated genome editing leads to a severe dwarfism *** C-terminus of the protein is crucial for its correct subcellular localization and interaction,supporting its critical role for TavWA1-7D *** analysis showed that the dwarf phenotype of the ah mutant is associated with impaired photosynthesis,ribosome function,and nucleosome ***,TavWA1-7D interacts with an E3 ligase,Ta VIP1-3B,the expression levels of which are elevated in both *** and knockout studies of TaVIP1-3B demonstrated its negative regulatory role in cell length and grain ***,our findings suggest that TavWA1-7D plays a vital role in regulating wheat growth and yield-related traits,with the dl mutant's short grain phen

关键词： grain size severe dwarf TaVIP1 TavWA1 wheat

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General and Specific Combining Abilities of Pacific Oyster(Crassostrea gigas)and Fujian Oyster(***)for Growth,Survival and Thermal Tolerance of Their Reciprocal Hybrids

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Journal of Ocean University of China 2025年第1期24卷 238-248页

作者： JIANG Gaowei XU Chengxun LI Qi Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China Laboratory for Marine Fisheries Science and Food production Processes Laoshan LaboratoryQingdao 266237China

A crossbreeding program was established in 2019 to address the declining Crassostrea gigas harvests caused by Pacific Oyster Mortality Syndrome(POMS).As a part of the program,this study was performed to estimate the genetic structure underlying phenotypic *** complete diallel crossings of *** and ***,comprising 60 full-sib families,were used to evaluate the general combining ability(GCA)and specific combining ability(SCA),as well as genotype and environment interactions for shell height(SH),summer survival(SS),and thermal tolerance(TT)of reciprocal hybrids GA(***♀×***♂)and AG(***♀×***♂)grown in Rongcheng and Rushan,Shandong Province,*** results suggested that heterosis of the reciprocal hybrids was evident for SH,SS,and *** hybrid GA had larger heterosis than AG in both testing environments,and can be a potential donor in the breeding *** male *** had better GCA for SH in Rongcheng,whereas male *** was a good general combiner for SS and TT in both Rongcheng and *** estimate of SCA was much higher than GCA for SH and lower than GCA for *** harness both additive and non-additive genetic effects,combination breed-ing could be taken to develop hybrid varieties possessing both thermal tolerance and fast-growing *** positive correlations between SH and TT suggested that these traits could be improved *** significant G×E interactions demonstrated the importance to undertake site-specific breeding programs in different ***,this study can provide essential information for developing crossbreeding strategies for the oyster farming industry.

关键词： crossbreeding combining ability genotype×environment interaction Crassostrea gigas C.angulata

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Small auxin-up RNA gene OsSAUR33 promotes seed aging tolerance in rice

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Journal of Integrative Agriculture 2025年第1期24卷 61-71页

作者： Shan Sun Wenjun Li Yanfen Fang Qianqian Huang Zhibo Huang Chengjing Wang Jia Zhao Yongqi He Zhoufei Wang Laboratory of seed Science and Technology South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesGuangzhou 510642China School of Agriculture Yunnan UniversityKunming 650091China

seed aging tolerance during storage is generally an important trait for crop production, yet the role of small auxin-up RNA genes in conferring seed aging tolerance is largely unknown in rice. In this study, one small auxin-up RNA gene, OsSAUR33, was found to be involved in the regulation of seed aging tolerance in rice. The expression of OsSAUR33 was significantly induced in aged seeds compared with unaged seeds during the seed germination phase. Accordingly, the disruption of OsSAUR33 significantly reduced seed vigor compared to the wild type(WT) in response to natural storage or artificial aging treatments. The rice OsSAUR33 gene promotes the vigor of aged seeds by enhancing their reactive oxygen species(ROS) level during seed germination, and the accumulation of ROS was significantly delayed in the aged seeds of Ossaur33 mutants in comparison with WT during seed germination. Hydrogen peroxide(H_(2)O_(2)) treatments promoted the vigor of aged seeds in various rice varieties. Our results provide timely theoretical and technical insights for the trait improvement of seed aging tolerance in rice.

关键词： auxin-responsive gene reactive oxygen species rice seed aging seed vigor

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Influence of Crop Nutrition on Grain Yield,seed Quality and Water Productivity under Two Rice Cultivation Systems

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Rice science 2013年第2期20卷 129-138页

作者： Y.V.SINGH K.K.SINGH S.K.SHARMA Centre for Conservation and Utilization of Blue Green Algae Indian Agricultural Research Institute seed production unit Indian Agricultural Research Institute

The system of rice intensification （SRI） is reported to have advantages like lower seed requirement,less pest attack,shorter crop duration,higher water use efficiency and the ability to withstand higher degree of moisture stress than traditional method of rice *** this background,SRI was compared with traditional transplanting technique at Indian Agricultural Research Institute,New Delhi,India during two wet seasons （2009-2011）.In the experiment laid out in a factorial randomized block design,two methods of rice cultivation [conventional transplanting （CT） and SRI] and two rice varieties （Pusa Basmati 1 and Pusa 44） were used under seven crop nutrition treatments,viz.T 1,120 kg/hm2 N,26.2 kg/hm2 P and 33 kg/hm2 K;T 2,20 t/hm2 farmyard manure （FYM）;T 3,10 t/hm2 FYM＋ 60 kg/hm2 N;T 4,5 t/hm2 FYM＋ 90 kg/hm2 N;T 5,5 t/hm2 FYM＋ 60 kg/hm2 N＋ 1.5 kg/hm2 blue green algae （BGA）;T 6,5 t/hm2 FYM＋ 60 kg/hm2 N＋ 1.0 t/hm2 Azolla,and T 7,N 0 P 0 K 0 （control,no NPK application） to study the effect on seed quality,yield and water *** SRI,soil was kept at saturated moisture condition throughout vegetative phase and thin layer of water （2-3 cm） was maintained during the reproductive phase of rice,however,in CT,standing water was maintained in crop growing *** revealed that CT and SRI gave statistically at par grain yield but straw yield was significantly higher in CT as compared to *** quality was superior in SRI as compared to *** nutrient management （INM） resulted in higher plant height with longer leaves than chemical fertilizer alone in both the rice *** yield attributes such as number of effective tillers per hill,panicle length and panicle weight of rice in both the varieties were significantly higher in INM as compared to chemical fertilizer *** yields of both the varieties were the highest in INM followed by the recommended doses of chemical *** grain yield and its attributes of Pusa 44 were significantly

关键词： rice crop nutrition grain yield seed quality system of rice intensification water productivity

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PrDA1-1 and its interacting proteins PrTCP1/PrTCP9 in flare tree peony affect yield by regulating seed weight and number

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Journal of Integrative Agriculture 2025年第02期24卷 610-622页

作者： Chunyan He Fangyun Cheng State Key Laboratory of Efficient production of Forest Resources Beijing Forestry University National Engineering Research Center for Floriculture Beijing Forestry University Peony International Institute Beijing Forestry University School of Landscape Architecture Beijing Forestry University

Tree peony is an emerging woody oilseed crop that has the potential to help meet the growing demand for edible oil and biofuel, and breeding high-yield varieties is the key to increasing production. The DA1 gene regulates seed weight and number and effectively improves crop yield, although its function in tree peonies has not yet been reported. In this study, three PrDA1 genes were first identified in the whole genome of ‘Jing Hong' flare tree peony(Paeonia rockii). PrDA1-1 is homologous to AtDA1 and contains three types of conserved structural domains: UIM(ubiquitin-interacting motif), LIM(Lin11, Isl-1, and Mec-3), and DA-like. PrDA1-1 was strongly expressed during both the early and late stages of seed development, and its constitutive expression in Arabidopsis reduced seed number but increased seed weight, which ultimately led to a reduction in yield. PrDA1-1 was found to interact with PrTCP1/PrTCP9 in yeast and plants, and the constitutive expression of PrTCP1/PrTCP9 in Arabidopsis increased seed weight and number, which resulted in higher yield. Since this study showed that PrDA1-1 and PrTCP1/PrTCP9 regulate seed weight and number to affect yield, these new genetic resources will help to improve the seed yield of tree peonies.

关键词： DA1 gene family PrTCP1/PrTCP9 Paeonia rockii seed traits

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Synthetic apomixis with normal hybrid rice seed production

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Molecular Plant 2023年第3期16卷 489-492页

作者： Xin Wei Chaolei Liu Xi Chen Hongwei Lu Jian Wang Shenlin Yang Kejian Wang State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Hainan Yazhou Bay seed Laboratory Sanya 572025China

Heterosis has long been exploited in the hybrid seed industry,which contributes to high and stable yields of modern agriculture(Huang et al.,2016).However,heterosis phenotypes of hybrid plants are segregated in its *** allows instant fixation and propagation though seeds with heterozygous genotypes,showing great potential in plant breeding and agricultural practice(Ye and Cui,2019).Apomixis naturally occurs in hundreds of plant species,but it is absent in major crop species(Underwood and Mercier,2022).Recently,synthetic apomixis has been engineered in rice by combining Mitosis instead of Meiosis(MiMe)with a mutation of MATRILINEAL or ectopic expression of BABY BOOM1(BBM1),enabling clonal reproduction of F1 hybrids through seeds and stable transmission of heterotic phenotypes over generations(Khanday et al.,2019;Wang et al.,2019;Liu et al.,2022).However,the fertility of both two strategies was significantly reduced compared with that of the wild type,which hinders the application of both strategies in *** this study,we established synthetic apomixis with a high fertility that is almost comparable to normal hybrid rice.

关键词： fertility breeding hundreds

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A novel hybrid seed production technology based on a unilateral cross-incompatibility gene in maize

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Science China(Life Sciences) 2023年第3期66卷 595-601页

作者： Darun Cai Zhaogui Zhang Li Zhao Juan Liu Huabang Chen State Key Laboratory of Plant Cell and Chromosome Engineering Innovative Academy of Seed DesignInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100039China

Hybrid seed production technology(SPT)using genic recessive male sterility is of great importance in maize ***,we report a novel SPT based on a maize unilateral cross-incompatibility gene Zm Ga1F with an extremely low transgene transmission rate(TTR).Proper pollen-specific Zm Ga1F expression severely inhibits pollen tube growth leading to no *** maintainer line harbors a transgene cassette in an ipe1 male sterile background containing IPE1 to restore ipe1 male fertility,Zm Ga1F to prevent transgenic pollen escape,the red fluorescence protein encoding gene Ds Red2 for the separation of male sterile and fertile seeds,and the herbicide-resistant gene Bar for transgenic plant *** the maintainer line is selfed,gametes of ipe1/transgene and ipe1/-genotypes are produced,and pollen of the ipe1/transgene genotype is not able to fertilize female gametes due to pollen tube growth inhibition by Zm ***,seeds of ipe1/ipe1 and ipe1/transgene genotypes are produced at a 1:1 ratio and could be separated easily by fluorescence-based seed *** a single seed emitting fluorescence is detected in more than 200,000 seeds examined demonstrating that the pollen-tube-inhibition(PTI)-based TTR is lower than what has been reported for similar technologies to *** PTI-based SPT shows promising potential for future maize hybrid seed production.

关键词： ZmGa1F pollen tube growth genic male sterility seed production technology transgene transmission rate

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Influence of seed Coating Formulations on Maize production

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Hunan Agricultural Science ＆ Technology Newsletter 2001年第4期2卷 22-24页

作者： Wang Changchun Jilin Provincial seed Station,Changchun 130062,China Jilin Provincial seed Station Changchun 130062 China

Effects of four coating formulations on maize production were *** results showed that all coating formulations had some effects on improving maize seedlings,strengthening the resistance againt diseases and pests and increasing the yields in different degrees,especially Paxil which increased the corn yield by 12.0%,significantly higher than the control.

关键词： maize seed coating formulation growth yield

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Parallel coordinate plots of maize traits under different magnesium applications

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Journal of Integrative Agriculture 2015年第3期14卷 593-597页

作者： Jan Bocianowski Piotr Szulc Kamila Nowosad Department of Mathematical and Statistical Methods Poznań University of Life Sciences Department of Agronomy Poznań University of Life Sciences Department of Genetics Plant Breeding and Seed Production Wroclaw University of Environmental and Life Sciences

The parallel coordinate plot is proposed as an efficient tool for visualization of 13 traits of ＂stay-green＂ maize（Zea mays L.） cultivar exposed to different methods of magnesium application. The field experiment was conducted in the Department of Agronomy, Poznań University of Life Sciences, on the fields of the Department of Teaching and Experimental Station in Swadzim in 2006–2008. Experiment was conducted as a single-factor experiment with seven applications of magnesium in a randomized complete block design with four replicates. The highest mean values of grain yield and 1 000-grain weight were obtained after application of variant T3 of magnesium（10 kg MgO ha^–1 soil） in the all three years of study.

关键词： magnesium maize parallel coordinate plots visualization

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Characterization and evaluation of rice blast resistance of Chinese indica hybrid rice parental lines

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The Crop Journal 2017年第6期5卷 509-517页

作者： Yunyu Wu Ling Yu Ning Xiao Zhengyuan Dai Yuhong Li Cunhong Pan Xiaoxiang Zhang Guangqing Liu Aihong Li Lixiahe Agricultural Research Institute of Jiangsu Province Yangzhou 225009 China Jiangsu Collaborative Innovation Center for Modern Crop production Nanjing 225009 China Jiangsu Golden Land seed Industry Co. Ltd China

The development of resistant varieties and hybrid combinations has been the most effective and economical strategy to control blast disease caused by Magnaporthe ***, the distribution of major R genes and blast resistance characterization in hybrid rice parents has not been well investigated, resulting in their limited use in hybrid rice blast-resistance breeding. In the present study, 88 elite indica hybrid rice parental lines were evaluated with 30 isolates of M. oryzae collected from the main planting area of indica hybrid rice in China and were characterized for the presence of 11 major resistance genes using molecular markers. The pathogenicity assays showed that four types of hybrid rice parent line showed some resistance to M. oryzae. However, the proportions of highly resistant lines and the mean resistance frequency(RF) varied among the four types, with resistance in decreasing order shown by three-line restorer lines, three-line maintainer lines, two-line sterile lines, and two-line restorer lines. All 88 hybrid rice parental lines carried more than one R gene, but none carried the R genes Pi1 and Pi2. Although Pid3 and Pi9 were present only in three-line restorer lines and Pigm only in three-line maintainer lines, the remaining six R genes(Pib, Pid2, Pi5, Pia, Pi54, and Pita) were present in the four types of hybrid rice parent with significantly different distribution frequencies. The correlation between R genes and resistance reactions was investigated. The results are expected to provide useful information for rational utilization of major R genes in hybrid rice breeding programs.

关键词： Hybrid rice parental lines Magnaporthe oryzae Pi genes Resistance evaluation Molecular markers

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