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Indica rice restorer lines with large sink potential exhibit improved nutrient transportation to the panicle,which enhances both yield and nitrogen-use efficiency

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Journal of Integrative Agriculture 2021年第6期20卷 1438-1456页

作者： TIAN Qing-lan HE Lian-hua LIAO Shuang LI Wu DENG Fei ZHOU Wei ZHONG Xiao-yuan REN Wan-jun Key Laboratory of Crop Ecophysiology and Farming System in Southwest China/Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province/College of Agronomy Sichuan Agricultural UniversityChengdu 611130P.R.China Biotechnology Research Institute Guangxi Academy of Agricultural SciencesNanning 530007P.R.China

The yield and nitrogen use efficiency(NUE)of hybrid rice combinations are closely related to restorer ***,it is essential to evaluate the agronomic characteristics of restorer lines with high yield and high NUE(HYHN).However,it is unclear which restorer lines are HYHN,and neither have the common agronomic traits of the HYHN restorer lines been *** to address this issue,we conducted two filed experiments using three nitrogen applications,which screened five HYHN restorer lines from 15 indica restorer ***,NUE and nutrient transportation of restorer lines with different yields and NUE types were *** and total nitrogen absorption in aboveground biomass(TNA)increased,whereas NUE for grain production decreased with increasing nitrogen application *** HYHN restorer lines had large spikelets and high weight per panicle that were significantly positively correlated with yield and ***,large sink potential may be beneficial for both yield and *** further studied the differences in nutrient transportation to panicles between the HYHN and low yield and low NUE(LYLN)restorer lines and found that the former had a higher nitrogen absorption level and dry matter weight ratios of panicle in ***,the HYHN lines also had a higher root and neck-panicle node bleeding intensity per stem after heading and more developed vascular bundles of neck-panicle nodes and leaves than the LYLN lines,which could contribute to the transportation of nutrients from root to ground and from stem and leaf to ***,the advantages of large sink potential of the HYHN restorer lines include large nutrient accumulation in and distribution to the panicles and smooth flow of nutrients along the transportation channels.

关键词： indica hybrid rice restorer lines grain yield nitrogen-use efficiency sink potential nutrient transportation

Integrated management strategy for improving the grain yield and nitrogen-use efficiency of winter wheat

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Integrated management strategy for improving the grain yield...

Potential Secretory Transporters and Biosynthetic Precursors of Biological Nitrification Inhibitor 1,9-Decanediol in Rice as Revealed by Transcriptome and Metabolome Analyses

2016年全国青年作物栽培与生理学术研讨会

作者：徐海成 Xinglong Dai Ting Zha Lijun Yin Xin Ma Jinpeng Chu 贺明荣 State Key Lab.of Crop Biology Key Lab.of Crop Ecophysiology and Farming SystemMinistry of AgricultureAgronomy College of Shandong Agricultural University

【Background and Aims】 Understanding on combinations of agronomic options,including seeding rate,sowing date,and nutrient management,to improve the grain yield and nitrogen(N) use efficiency(NUE) of winter wheat(Triticum aestivum L.) are *** performed a three-year experiment involving four integrated management strategies to evaluate changes in grain yield and NUE,and to determine an optimal management strategy.【Materials and Methods】 The integrated management treatments were designed as follows:current practice(T1);improved practice over current practice to offset major limitations to wheat plant growth(T2);high-yield management(T3),which aimed to maximize grain yield regardless of the cost of resource inputs;and integrated soil and crop system management for improved grain yield and NUE with a higher seeding rate,delayed sowing date,and optimized nutrient management(T4).【Results】Treatment T3 produced the highest grain yield among all treatments over three *** yield averaged across three years with the T4 treatment was 95.85%of that with T3 and was 21.72 and 6.10%higher than with T1 and T2,*** T2 produced the highest NUE of all the integrated *** NUE with T4 was 95.36%of that with T2 and was 51.91 and 25.62%higher than with T1 and T3,*** N-uptake efficiency(UPE) averaged across three years with T4 was50.75 and 16.62%higher than with T1 and T3,*** N-utilization efficiency(UTE) averaged across three years with T4 was 7.74%higher than with *** with T3,the increased UPE with T4 was attributed mostly to its far lower available N despite the lower aboveground N uptake(AGN),while the increased UTE with T4 was caused mainly by its highest N harvest index(NHI) and relatively low grain N concentration(GNC),which consequently led to the improved NUE.【Conclusions】 Therefore,if a decrease in yield of about 5%is acceptable,the T4 treatment should be recommended as the optimal management strategy for bo

关键词： Integrated management strategy grain yield nitrogen-use efficiency winter wheat

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Rice science 2024年第1期31卷 87-102页

作者： DI Dongwei MA Mingkun ZHANG Xiaoyang LU Yufang Herbert J.KRONZUCKER SHI Weiming State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China School of Food Science and Engineering Foshan UniversityFoshan 528000China School of BioSciences The University of MelbourneParkvilleVIC 3010Australia University of Chinese Academy of Sciences Beijing 100049China

Biological nitrification inhibitors(BNIs)are released from plant roots and inhibit the nitrification activity of microorganisms in soils,reducing NO_(3)^(‒)leaching and N2O emissions,and increasing nitrogenuse efficiency(NUE).Several recent studies have focused on the identification of new BNIs,yet little is known about the genetic loci that govern their biosynthesis and *** applied a combined transcriptomic and metabolomic analysis to investigate possible biosynthetic pathways and transporters involved in the biosynthesis and release of BNI 1,9-decanediol(1,9-D),which was previously identified in rice root *** results linked four fatty acids,icosapentaenoic acid,linoleate,norlinolenic acid,and polyhydroxy-α,ω-divarboxylic acid,with 1,9-D biosynthesis and three transporter families,namely the ATP-binding cassette protein family,the multidrug and toxic compound extrusion family,and the major facilitator superfamily,with 1,9-D release from roots into the soil *** finding provided candidates for further work on the genes implicated in the biosynthesis and secretion of 1,9-D and pinpoint genetic loci for crop breeding to improve NUE by enhancing 1,9-D secretion,with the potential to reduce NO_(3)^(‒)leaching and N2O emissions from agricultural soils.

关键词： 1,9-decanediol biological nitrification inhibitor metabolomic analysis nitrogen-use efficiency transcriptomic analysis

Understanding source-sink interactions: Progress in model plants and translational research to crops

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Molecular Plant 2023年第1期16卷 96-121页

作者： Laise Rosado-Souza Ryo Yokoyama Uwe Sonnewald Alisdair R.Fernie Max-Planck-Institute of Molecular Plant Physiology Am Mühlenberg 114476 Potsdam-GolmGermany Department of Biochemistry University of Erlangen-NurembergStaudtstrasse 591058 ErlangenGermany

Agriculture is facing a massive increase in demand per hectare as a result of an ever-expanding population and environmental *** we have learned much about how environmental conditions and diseases impact crop yield,until recently considerably less was known concerning endogenous factors,including within-plant nutrient *** this review,we discuss studies of source-sink interactions covering both fundamental research in model systems under controlled growth conditions and how the findings are being translated to crop plants in the *** this respect we detail efforts aimed at improving and/or combining C3,C4,and CAM modes of photosynthesis,altering the chloroplastic electron transport chain,modulating photorespiration,adopting bacterial/algal carbon-concentrating mechanisms,and enhancing nitrogen-and water-use ***,we discuss how modulating TCA cycle activities and primary metabolism can result in increased rates of photosynthesis and outline the opportunities that evaluating natural variation in photosynthesis may *** source,transport,and sink functions are all covered in this review,we focus on discussing source functions because the majority of research has been conducted in this ***,considerable recent evidence,alongside the evidence from classical studies,demonstrates that both transport and sink functions are also incredibly important determinants of *** thus describe recent evidence supporting this notion and suggest that future strategies for yield improvement should focus on combining improvements in each of these steps to approach yield optimization.

关键词： photosynthesis assimilate transport nitrogen-use efficiency water-use efficiency source-sink natural variance transgenic intervention

Strigolactone and gibberellin signaling coordinately regulate metabolic adaptations to changes in nitrogen availability in rice

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Molecular Plant 2023年第3期16卷 588-598页

作者： Huwei Sun Xiaoli Guo Xiuli Zhu Pengyuan Gu Wei Zhang Wenqing Tao Daojian Wang Yunzhe Wu Quanzhi Zhao Guohua Xu Xiangdong Fu Yali Zhang National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Key Laboratory of Plant Nutrition and Ferilization in Low-Middle Reaches of the Yangtze RiverMinistry of AgricultureNanjing Agricultural UniversityNanjing 210095China Key Laboratory of Rice Biology in Henan Province Collaborative Innovation Center of Henan Grain CropsHenan Agricultural UniversityZhengzhou 450002China state Key Laboratoryof Plant Celland ChromosomeEngineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBejing 100049China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China

Modern semi-dwarf rice varieties of the“Green Revolution”require a high supply of nitrogen(N)fertilizer to produce high yields.A better understanding of the interplay between N metabolism and plant developmental processes is required for improved N-use efficiency and agricultural ***,we show that strigolactones(SLs)modulate root metabolic and developmental adaptations to low N availability for ensuring efficient uptake and translocation of available *** key repressor DWARF 53(D53)of the SL signaling pathway interacts with the transcription factor GROWTH-REGULATING FACTOR 4(GRF4)and prevents GRF4 from binding to its target gene promoters.N limitation induces the accumulation of SLs,which in turn promotes SL-mediated degradation of D53,leading to the release of GRF4 and thus promoting the expression of genes associated with N metabolism.N limitation also induces degradation of the DELLA protein SLENDER RICE 1(SLR1)in an D14-and D53-dependent manner,effectively releasing GRF4 from competitive inhibition caused by ***,our findings reveal a previously unrecognized mechanism underlying SL and gibberellin crosstalk in response to N availability,advancing our understanding of plant growth–metabolic coordination and facilitating the design of the strategies for improving N-use efficiency in high-yield crops.

关键词： GRF4 nitrogen-use efficiency Oryza sativa SLR1 strigolactones

Sesame response to nitrogen management under contrasting water availabilities

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Oil Crop Science 2022年第4期7卷 166-173页

作者： Elnatan Golan Zvi Peleg Zipora Tietel Ran Erel Gilat Research Center Agricultural Research OrganizationIsrael The Robert H.Smith Faculty of Agriculture Food and EnvironmentThe Hebrew University of JerusalemIsrael

Sesame is mainly cultivated under traditional,low-input *** breeding developments promoted the modernization and mechanization of sesame ***,only a few articles have been published concerning fertilization requirements for both modern and traditional *** field trials at two locations,we determined the response of irrigated sesame to nitrogen(N).Three promising sesame lines were tested combining two irrigation levels with four N *** a high irrigation level,N had a significant effect on growth,branching,and consequently,seed yield exceeding two-ton ha^(-1).A high N doze was accompanied by a decrease in the photosynthetic rate and leaf water *** δ^(13)C confirmed lower stomatal conductance under high N *** deficit irrigation,the N level had a minor effect on the monitored parameters,indicating N fertilization was not *** oil content was negatively correlated with seed N *** results question the necessity of N application when water is limited,as N fertilization promotes vigorous development that rapidly depletes soil ***,water availability should be considered when developing an N management *** high-yielding agro-systems,roughly 80–120 kg ha^(-1)N is required for optimal yield,bearing in mind the negative association between seed-N and oil content.

关键词： nitrogen-use efficiency Seed-oil Irrigation Fertigation

Effects of nitrogen Application Levels on Ammonia Volatilization and nitrogen Utilization during Rice Growing Season

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Rice science 2012年第2期19卷 125-134页

作者： LIN Zhong-cheng DAI Qi-gen YE Shi-chao WU Fu-guan JIA Yu-shu CHEN Jing-dou XU Lu-sheng ZHANG Hong-cheng Huo Zhong-yang Xu Ke WEt Hai-yan Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Innovation Center of Rice Cultivation Technology in Yangtze Valley Ministry of Agriculture Yangzhou University Yangzhou 225009 China Agriculture Committee of Wujiang County Jiangsu Province Wujiang 215200 China Agriculture Bureau of Guannan County Jiangsu Province Guannan 222500 China

We conducted field trials of rice grown in sandy soil and clay soil to determine the effects of nitrogen application levels on the concentration of NH4＋-N in surface water, loss of ammonia through volatilization from paddy fields, rice production, nitrogen-use efficiency, and nitrogen content in the soil profile. The concentration of NH4＋-N in surface water and the amount of ammonia lost through volatilization increased with increasing nitrogen application level, and peaked at 1-3 d after nitrogen application. Less ammonia was lost via volatilization from clay soil than from sandy soil. The amounts of ammonia lost via volatilization after nitrogen application differed depending on the stage when it was applied, from the highest loss to the lowest： N application to promote tillering 〉 the first N topdressing to promote panicle initiation （applied at the last 4-leaf stage）〉 basal fertilizer 〉 the second N topdressing to promote panicle initiation （applied at the last 2-leaf stage）. The total loss of ammonia via volatilization from clay soil was 10.49-87.06 kg/hm2, equivalent to 10.92%-21.76% of the nitrogen applied. The total loss of ammonia via volatilization from sandy soil was 11.32-102.43 kg/hm2, equivalent to 11.32%-25.61 % of the nitrogen applied. The amount of ammonia lost via volatilization and the concentration of NH4＋-N in surface water peaked simultaneously after nitrogen application; both showed maxima at the tillering stage with the ratio between them ranging from 23.76% to 33.65%. With the increase in nitrogen application level, rice production and nitrogen accumulation in plants increased, but nitrogen-use efficiency decreased. Rice production and nitrogen accumulation in plants were slightly higher in clay soil than in sandy soil. In the soil, the nitrogen content was the lowest at a depth of 40-50 cm. In any specific soil layer, the soil nitrogen content increased with increasing nitrogen application level, and the soil nitrogen content was higher in

关键词： ammonia volatilization nitrogen application level soil type nitrogen-use efficiency rice