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Assessing Stress Tolerance of SUBI and DRO1 Introgression Lines under Flooding and Drought Conditions at Different Growth Stages

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Phyton-International Journal of Experimental Botany 2025年第2期94卷 303-316页

作者： Ibrahim Soe Emmanuel Odama Alex Tamu Aquilino Lado Legge Wani Taiichiro Ookawa Abdelbagi M.Ismail Jun-Ichi Sakagami The United Graduate School of Agricultural Sciences Kagoshima UniversityKagoshima890-8580Japan Sierra Leone Agricultural Research institute FreetownPMB 1313Sierra Leone National Agricultural Research Organization Abi Zonal Agricultural Researchand Development InstituteEntebbeP.O.Box 295Uganda Directorate of Research and training Ministry of Agriculture and Food SecurityJubaP.O.Box 33Republic of South Sudan institute of agriculture Tokyo University of Agriculture and TechnologyTokyo156-8502Japan International Rice Research institute Africa OfficeNairobiP.O.Box 30709Kenya Faculty of agriculture Kagoshima UniversityKagoshima890-0065Japan

Rice varieties tolerant to submergence regulate shoot elongation during short-term submergence by expressing the SUB1A *** contrast,the deep-rooted DRO1 is effectively expressed under drought conditions to enhance water and nutrient *** study investigates the growth and yield of rice with both SUB1A and DRO1 in the background of IR64,under early-season flooding,and mid-season *** study used a randomized complete design with two factors:soil moisture treatments(submergence,drought,and their combination)and *** genotypes included IR64,and three near-isogenic lines(NILs):NIL-SUB1DRO1,NIL-SUB1,and *** submergence was imposed for 7 days on 14-day-old seedlings,while drought was imposed on control and submerged plants following a 21-day recovery period from submergence,using 42-day-old *** were measured before and after treatments(submergence and drought),and at harvest or grain *** stresses negatively affected the *** harvest,IR64 and NIL-SUB1DRO1 under both stresses showed a significant reduction in tiller numbers,shoot dry weights,and yields compared to their control ***64 exhibited a significant delay in reaching flowering under all *** rice introgression lines showed significant improvements in tolerance to the *** study showed no negative consequences of combining drought and submergence tolerance in rice.

关键词： Drought deep rooting flooding NIL-SUB1DRO1 rice yield submergence tolerance submergence+drought

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Performance of Four Rice Cultivars Transplanted Monthly over Full Year under Irrigated Conditions in Tanzania

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Rice science 2015年第2期22卷 71-80页

作者： Nobuhito SEKIYA Aristarick Cyril SHAYO Mathew Kaozya JACOB Nobuaki OIZUMI Motonori TOMITAKA Hideki ARAKI Japan International Cooperation Agency (JICA) JICA Tanzania Office institute for Sustainable Agroecosystem Services Graduate School of Agricultural and Life SciencesUniversity of Tokyo Kilimanjaro Agricultural training Centre Experimental Farm Faculty of AgricultureYamaguchi University ministry of agriculture training institute ilonga Japan International Cooperation Agency JICA Headquarters

In Tanzania, the phenology and seasonal variations of the yields of different rice cultivars have rarely been studied, especially under fully-irrigated conditions. A trial was conducted to identify the most suitable calendar for rice production in Tanzania under fully-irrigated conditions. Four popular rice cultivars, NERICA1, Wahiwahi, IR64 and TXD306, were transplanted monthly from January to December 2011. The four cultivars recorded similarly higher or lower yields than the annual means when transplanted in July （0.50-0.57 kg/m2） and April （0.07-0.31 kg/m2）. A yield-ranking analysis showed that plants transplanted in July was the most productive while those transplanted in April was the least productive, and also revealed a yield-seasonality for irrigated rice in Tanzania, a low-yield season （April-May）, a high-yield season （June-August）, and an unstable-yield season （September-March）. These yield seasons would appear to be closely linked to seasonal temperature variations. When transplanted in April-May, plants were exposed to very low temperatures between panicle initiation and flowering, apparently reducing yield through cold-induced sterility. Those transplanted in June-August prolonged their growth under relatively low temperatures and increased yield through increasing biomass production. In September- March, yield levels varied greatly due to the shortened phenological growth durations at higher temperatures. We conclude that under fully-irrigated conditions in Tanzania, rice should be transplanted in July to ensure the maximum production and yield stability. The yield-seasonality suggests that implementing measures to protect plants from low and high temperature stress at critical phenological stages may allow year-round rice production under fully-irrigated conditions in Tanzania.

关键词： irrigated rice local variety phenological response temperature yield component yieldperformance

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Transcriptomic responses in resistant and susceptible maize infected with Fusarium graminearum

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The Crop Journal 2020年第1期8卷 153-163页

作者： Guangsheng Yuan Xiujing He Hui Li Kui Xiang Li Liu Chaoying Zou Haijian Lin Jiali Wu Zhiming Zhang Guangtang Pan Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region of ministry of agriculture Maize Research InstituteSichuan Agricultural University

Gibberella ear rot(GER)caused by Fusarium graminearum(teleomorph Gibberella zeae)is a common maize disease that not only severely reduces grain yield but also contaminates maize grain with *** investigated the molecular mechanism underlying the host defense responses against pathogen infection using comparative transcriptomic *** injected *** spore suspensions into plants of resistant(IBM-81)and a susceptible(IBM-85)maize inbred line after pollination and performed RNA-seq 48,72,and 96 h after *** 487 and 410 differentially expressed genes(DEGs)were induced in the resistant and susceptible lines across three time points,indicating that a stronger defense response was activated in the resistant than in the susceptible *** them,198 genes commonly induced in the two lines were subjected to pathway analysis,revealing that most of the DEGs were closely associated with defense and a wide range of metabolic *** associated with pathogenesis-related protein 1(PR1)and regulation of salicylic acid were significantly enriched during *** infection,suggesting that these DEGs play dominant roles in maize resistance to *** results provide a resource for future gene discovery and facilitate elucidation of the complex defense mechanisms involved in resistance to GER.

关键词： Gibberella ear rot Fusarium graminearum Molecular mechanism RNA-seq Differentially expressed genes

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Identification of novel soybean oil content-related genes using QTL-based collinearity analysis from the collective soybean genome

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Journal of Integrative agriculture 2018年第8期17卷 1727-1735页

作者： XU Ming-yue LIU Zhang-xiong QIN Hong-tao QI Hui-dong WANG Zhong-yu MAO Xin-rui XIN Da-wei HU Zhen-bang WU Xiao-xia JIANG Hong-wei QI Zhao-ming CHEN Qing-shan Key Laboratory of Soybean Biology Ministry of Education/College of AgricultureNortheast Agricultural University National Key Facility for Crop Gene Resources and Genetic Improvement(NFCRI)/Key Laboratory of Germplasm Utilization Ministry of Agriculture/Institute of Crop SciencesChinese Academy of Agricultural Sciences

Soybean is a global principal source of edible plant oil. As more soybean oil-related quantitative trait loci(QTLs) have been located in the collective genome, it is urgent to establish a classification system for these distributed QTLs. A collinear platform may be useful to characterize and identify relationships among QTLs as well as aid in novel gene discovery. In this study, the collinearity MCScan X algorithm and collective soybean genomic information were used to construct collinearity blocks, to which soybean oil-related QTLs were mapped. The results demonstrated that 666 collinearity blocks were detected in the soybean genome across 20 chromosomes, and 521 collinearity relationships existed in 231 of the 242 effective soybean oil-related QTLs. This included 214 inclusion relationships and 307 intersecting relationships. Among them, the collinearity among QTLs that are related to soybean oil content was shown on a maximum of seven chromosomes and minimum of one chromosome, with the majority of QTLs having collinearity on two chromosomes. Using overlapping hotspot regions in the soybean oil QTLs with collinearity, we mined for novel oil content-related genes. Overall, we identified 23 putatively functional genes associated with oil content in soybean and annotated them using a number of annotation databases. Our findings provide a valuable framework for elucidating evolutionary relationships between soybean oil-related QTLs and lay a foundation for functional marker-assisted breeding relating to soybean oil content.

关键词： soybean oil QTLs collinearity analysis candidate genes

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Strategic codon selection for enhanced genetic code expansion

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Science China Life Sciences 2025年第03期 884-886页

作者： Zhouqing Luo Junbiao Dai Shenzhen Key Laboratory of Synthetic Genomics Guangdong Provincial Key Laboratory of Synthetic Genomics Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences State Key Laboratory of Cellular Stress Biology School of Life Sciences Faculty of Medicine and Life Sciences Xiamen University Shenzhen Branch Guangdong Laboratory for Lingnan Modern Agriculture Shenzhen Key Laboratory of Agricultural Synthetic Biology Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences

Incorporating noncanonical amino acids (nc AAs) beyond these naturally occurring ones into proteins has proven to be a powerful method for modifying their properties, leading to significant advancements in both fundamental and applied sciences. Currently, over 300 nc AAs can be genetically encoded with varying degrees of efficiency. Thus, genetic code expansion(GCE) technology, which extends the range of amino acids available for protein synthesis, represents a major and exciting area of research. A GCE system precisely incorporates nc AAs into proteins using custom-designed orthogonal aminoacyl-t RNA synthetases (aa RSs) and t RNA pairs along with specific codons.

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Effects of Milling Methods on Rice Flour Properties and Rice Product Quality:A Review

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Rice science 2024年第1期31卷 33-46页

作者： TIAN Yu SUN Jing LI Jiaxin WANG Aixia NIE Mengzi GONG Xue WANG Lili LIU Liya WANG Fengzhong TONG Litao institute of Food Science and Technology/Western Research institute Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products ProcessingMinistry of Agriculture and Rural AffairsBeijing 100193China

High-quality rice flour is the foundation for the production of various rice-based *** is an essential step in obtaining rice flour,during which significant changes occur in the physicochemical and quality characteristics of the *** rice flour obtained through mainstream wet milling methods exhibits superior quality,low production efficiency and wastewater discharge limit the development of the *** milling,on the other hand,conserves water resources,but adversely affects flour performance due to excessive heat *** an emerging powder-making technique,semi-dry milling offers a promising solution by enhancing flour quality and reducing environmental *** is achieved by minimizing soaking time through hot air treatment while reducing mechanical energy consumption to reach saturated water absorption ***,continuous production remains a *** comprehensive review summarizes the effects of various milling technologies on rice flour properties and product *** also discusses key control indicators and technical considerations for rice flour processing equipment and processes.

关键词： flour property milling equipment milling method rice flour rice product quality semi-dry milling

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Niche breadth and overlap of spotted deer and domestic cattle with swamp deer in tropical region of Nepal

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Ecological Processes 2022年第1期11卷 238-247页

作者： Siddhartha Regmi Bijaya Neupane Bijaya Dhami Deepak Gautam Saroj Panthi Megharaj Poudel institute of Forestry Tribhuvan University44107 HetaudaNepal institute of Forestry Tribhuvan University33700 PokharaNepal School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China ministry of Forest Environment and Soil ConservationPokhara 33700GandakiNepal ministry of Forests and Environment Forest Research and Training CenterKathmandu 44600Nepal Faculty of agriculture and Forestry University of Helsinki00014 HelsinkiFinland

Background:Knowledge about the niche overlap among wild species and domestic cattle is helpful to conserve and manage *** assessed the habitat niche breadth and overlap of sympatrically living spotted deer(Axis axis)and domestic cattle with swamp deer(Cervus duvaucelii)in Shuklaphanta National Park,Nepal during the dry season to explore the possibility of interspecific competition by studying the habitat use by these *** assumption was made that the presence of pellets is proof of habitat used by ***:Grids of 2 km×2 km have four subgrids,each with four sample plots,making a total of 16 plots(20 m×20 m)in each *** size of each sub-grid was 200 m×200 m and they were placed randomly inside the grid but at least 1 km apart from one *** data was collected in a 96 plots in ***’s niche breadth and Morisita’s overlap index were calculated to determine the niche breadth and the habitat overlap,***:The Levin’s measure of niche breadth suggested that spotted deer had the highest acclimatization with an index value of 0.94,followed by domestic cattle at 0.50,and swamp deer at 0.33 in our study ***,our findings supported the evidence that spotted deer are habitat generalists,whereas swamp deer are habitat *** swamp deer had lower niche breadth and more overlap with domestic ***:Our study showed the least niche breadth of swamp deer in comparison to spotted deer and domestic *** domestic cattle had the highest and least niche overlap with spotted deer and swamp deer,respectively,in terms of habitat *** study suggests that domestic cattle grazing should be stopped,and grassland management should be carried out for the benefit of *** studies should be conducted,including different seasons and places,prior to appropriate habitat *** addition,further studies are needed to quantify the extent of interspecific competition by incorporating more species.

关键词： Generalist Levin’s niche breadth Morisita’s overlap index Spatial overlap Habitat specialist

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Appraising trapping efficiency of vegetative barriers in agricultural landscapes:Strategy based on a probabilistic approach based on a review of available information

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International Soil and Water Conservation Research 2024年第3期12卷 615-634页

作者： José-Antonio Muñoz Gema Guzmán María-Auxiliadora Soriano José A.Gómez institute for Sustainable agriculture(IAS)-CSIC Cordoba14004Spain Andalusian institute of Agricultural and Fisheries Research and training(IFAPA) Granada18004Spain Agronomy Department(DAUCO) University of CordobaCordoba14071Spain

Vegetative barriers have proven their effectiveness in controlling water erosion and enhancing other ecosystem services in agricultural *** characteristic has led to the conservation and promotion of vegetative barriers as landscape elements by the Common Agricultural Policy and other policy *** reviews have dealt with the trapping efficiency of vegetated barriers,although they usually focus on studies from humid climates where their implantation and survival are more ***,vegetated barriers are also an attractive alternative in arid and semi-arid *** limit competition for water and nutrients with crops to a reduced area compared to other best management practices,such as cover *** study presents a review of trapping efficiency of sediment,runoff,and nutrients(P and N)by vegetative barriers in regions of humid and arid,and semi-arid,climates,and a strategy based on sediment trapping efficiency probability,which in turn is based on the results obtained from our *** types of independent variables were grouped and identified for the review:related to the vegetative barrier dimension(buffer width,slope of the plot,and buffer area ratio),and related to the experimental conditions(type of vegetation in the buffer,soil protection of the non-buffered area,type of climate,type of experimental measurement and origin of rainfall).An explor-atory analysis evaluated the significance of the experimental variables,which identified the need to focus on experiments under natural rainfall since those carried out with simulated rainfall presented statis-tically significant *** general,average trapping efficiencies for runoff and sediment were 40.1 and 62.6%,*** nutrients,values of trapping efficiencies had an average of 44.9%for phosphorus and 38.4%for *** and sediment trapping efficiency in arid and semi-arid re-gions tended to be higher than in humid *** dimensional

关键词： Connectivity Sediment transport Runoff Nutrients Experimental plots Buffer strip

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Estimation of spectral responses and chlorophyll based on growth stage effects explored by machine learning methods

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The Crop Journal 2022年第5期10卷 1292-1302页

作者： Dehua Gao Lang Qiao Lulu An Ruomei Zhao Hong Sun Minzan Li Weijie Tang Nan Wang Key Laboratory of Modern Precision agriculture System Integration Research Ministry of EducationChina Agricultural UniversityBeijing 100083China Key Laboratory of Agricultural Information Acquisition Technology Ministry of Agriculture and Rural AffairsChina Agricultural UniversityBeijing 100083China Yantai institute of China Agricultural University Yantai 264670ShandongChina

Estimation of leaf chlorophyll content(LCC) by proximal sensing is an important tool for photosynthesis evaluation in high-throughput phenotyping. The temporal variability of crop biochemical properties and canopy structure across different growth stages has great impacts on wheat LCC estimation, known as growth stage effects. It will result in the heterogeneity of crop canopy at different growth stages, which would mask subtle spectral response of biochemistry variations. This study aims to explore spectral responses on the growth stage effects and establish LCC models suited for different growth stages. A total number of 864 pairwise samples of wheat canopy spectra and LCC values with 216 observations of each stage were sampled at the tillering, jointing, booting and heading stages in 2021. Firstly, statistical analysis of LCC and spectral response presented different distribution traits and typical spectral variations peak at 470, 520 and 680 nm. Correlation analysis between LCC and reflectance showed typical red edge shifts. Secondly, the testing model of partial least square(PLS) established by the entire datasets to validate the predictive performance at each stage yielded poor LCC estimation accuracy. The spectral wavelengths of red edge(RE) and blue edge(BE) shifts and the poor estimation capability motivated us to further explore the growth stage effects by establishing LCC models at respective growth ***, competitive adaptive reweighted sampling PLS(CARS-PLS), decision tree(DT) and random forest(RF) were used to select sensitive bands and establish LCC models at specific stages. Bayes optimisation was used to tune the hyperparameters of DT and RF regression. The modelling results indicated that CARS-PLS and DT did not extract specific wavelengths that could decrease the influences of growth stage effects. From the RF out-of-bag(OOB) evaluation, the sensitive wavelengths displayed consistent spectral shifts from BE to GP and from RE to RV from t

关键词： Wheat chlorophyll content Growth stage effects Sensitive wavelengths Spectral response Random forest

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The urgent need to develop a new grassland map in China:based on the consistency and accuracy of ten land cover products

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Science China(Life Sciences) 2023年第2期66卷 385-405页

作者： Mengjing Hou Jing Ge Yangjing Xiu Baoping Meng Jie Liu Qisheng Feng Tiangang Liang State Key Laboratory of Grassland Agro-Ecosystems Key Laboratory of Grassland Livestock Industry InnovationMinistry of Agriculture and Rural AffairsEngineering Research Center of Grassland IndustryMinistry of EducationCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China institute of Fragile Eco-Environment Nantong UniversityNantong 226007China

Grasslands are the most dominant terrestrial ecosystem in China, but few national grassland maps have been generated. The grassland resource map produced in the 1980s is widely used as background data, but it has not been updated for almost 40 ***, a reliable map depicting the current spatial distribution of grasslands across the country is urgently needed. In this study, we evaluated the grassland consistency and accuracy of ten land cover datasets(GLC2000, GlobCover, CCI-LC,MCD12Q1, CLUD, GlobeLand30, GLC-FCS30, CGLS-LC100, CLCD, and FROM-GLC) for 2000, 2010, and 2020 based on extensive fieldwork. We concluded that the area of these ten grassland products ranges from 107.80×10^(4)to 332.46×10^(4)km^(2), with CLCD and MCD12Q1 having the highest area consistency. The spatial and sample consistency is highest in the regions of eastcentral Inner Mongolia, the Qinghai-Tibet Plateau and northern Xinjiang, while the distribution of southern grasslands is scattered and differs considerably among the ten products. MCD12Q1 is significantly more accurate than the other nine products,with an overall accuracy(OA) reaching 77.51% and a kappa coefficient of 0.51;CLCD is slightly less accurate than MCD12Q1(OA=73.02%, kappa coefficient=0.45) and is more conducive to the fine monitoring and management of grassland because of its30-meter resolution. The highest accuracy of grassland was found in the Inner Mongolia-Ningxia region and Qinghai-Tibet Plateau, while the accuracy was worst in the southeastern region. In the future grassland mapping, cartographers should improve the accuracy of the grassland distribution in South China and regions where grassland is confused with forest, cropland and bare land. We specify the availability of valuable data in existing land cover datasets for China’s grasslands and call for researchers and the government to actively produce a new generation of grassland maps.

关键词： grassland land use and land cover MCD12Q1 CLCD consistency comparison accuracy assessment

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