检索结果-南通市图书馆

Coordinated responses of leaf and nodule traits contribute to the accumulation of N in relay intercropped soybean

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第6期23卷 1910-1928页

作者： Ping Chen Qing Du Benchuan Zheng Huan Yang Zhidan Fu Kai Luo Ping Lin Yilin Li Tian Pu Taiwen Yong Wenyu Yang College of Agronomy Sichuan Agricultural University/Sichuan Engineering Research Center for Crop Strip Intercropping System/Key Laboratory of Crop Ecophysiology and Farming System in SouthwestMinistry of Agriculture and Rural AffairsChengdu 611130China Crop research institute Sichuan Academy of Agricultural SciencesChengdu 610066China

Maize(Zea mays L.)-soybean(Glycine max L.Merr.)relay intercropping provides a way to enhance land productivity.However,the late-planted soybean suffers from shading by the maize.After maize harvest,how the recovery growth influences the leaf and nodule traits remains unclear.A three-year field experiment was conducted to evaluate the effects of genotypes,i.e.,supernodulating(nts1007),Nandou 12(ND12),and Guixia 3(GX3),and crop configurations,i.e.,the interspecific row spacing of 45(I45),60(I60),75 cm(I75),and sole soybean(SS),on soybean recovery growth and N fixation.The results showed that intercropping reduced the soybean total leaf area(LA)by reducing both the leaf number(LN)and unit leaflet area(LUA),and it reduced the nodule dry weight(NW)by reducing both the nodule number(NN)and nodule diameter(ND)compared with the SS.The correlation and principal component analysis(PCA)indicated a co-variability of the leaf and nodule traits in response to the genotype and crop configuration interactions.During the recovery growth stages,the compensatory growth promoted soybean growth to reduce the gaps of leaf and nodule traits between intercropping and SS.The relative growth rates of ureide(RGR_U)and nitrogen(RGR_N)accumulation were higher in intercropping than in SS.Intercropping achieved more significant sucrose and starch contents compared with SS.ND12 and GX3 showed more robust compensatory growth than nts1007 in intercropping.Although the recovery growth of relay intercropping soybean improved biomass and nitrogen accumulation,ND12 gained a more significant partial land equivalent ratio(pLER)than GX3.The I60 treatment achieved more robust compensation effects on biomass and N accumulation than the other configurations.Meanwhile,I60 showed a higher nodule sucrose content and greater shoot ureide and N accumulation than SS.Finally,intercropping ND12 with maize using an interspecific row spacing of 60 cm was optimal for both yield advantage and N accumulation.

关键词： relay intercropping genotype crop configuration symbiotic nitrogen fixation soybean nodule

维普期刊数据库

Revealing the Structure-Property Difference of Natural Rubber Prepared by Different Methods: Protein and Gel Content are Key Factors

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer science 2024年第4期42卷 457-467页

作者： Shao-Qi Huang Jun-Qi Zhang Yong Zhu Ling-Min Kong Lu-Sheng Liao Fu-Quan Zhang Zheng-Tian Xie Jin-Rong Wu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China Hainan Provincial Key Laboratory of Natural Rubber Processing Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural SciencesZhanjiang524001China

Natural rubber (NR) is widely used in various fields including aerospace, military industry and transportation due to its superior elasticity and comprehensive mechanical properties. Nonetheless, the commercial NR prepared by different methods usually exhibits different mechanical properties, primarily due to variations in processing conditions during the conversion from latex to bulk rubber material. Consequently, this poses challenges in scientific research and industrial production of NR. In order to assess the properties of various commercially available NR and identify key structural and compositional components, this study systematically compares and analyzes four representative NR raw materials: air dried sheet (ADS), ribbed smoked sheets (RSS), constant viscidity NR (CV), and whole field latex rubber (WF). The investigation focuses on evaluating their static mechanical behavior, SIC behavior, wear resistance, and fatigue resistance. The findings indicate that protein and gel content exhibit a crucial influence on the NR properties. These constituents contribute to the formation of a high-crosslinking density region, generating a heterogeneous network structure within the rubber. This structure amplifies strains during deformation, leading to earlier and stronger strain-induced crystallization (SIC). Among the four commercial NR brands, RSS demonstrates superior overall mechanical and dynamic properties owing to its high protein and gel content. This study serves as a valuable reference for comprehending the differences in properties among various commercial NR, thereby offering guidance for the actual processing and selection of NR.

关键词： Natural rubber Processingmethod Protein Gel content Property

维普期刊数据库

Grow rice under sunshine of Xizang/Tibet:promise and challenges

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2024年第3期51卷 265-267页

作者： Chunkun Fan Xiaoming Zheng Qingbo Yuan Tao Wang Qian Qian Qingyun Bu Fan Chen agricultural institute Xizang Academy of Agricultural and Animal Husbandry ScienceLasaXizang 850032China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of AgriculturalSciencesBeijing 100081China Sanya National research institute of Breeding in Hainan Chinese Academy of Agricultural SciencesBeijing 572000China Yazhouwan National Laboratory SanyaHainan 572704China Chengdu institute of Biology Chinese Academy of SciencesChengduSichuan 610041China Northeast institute of Geography and Agroecology Chinese Academy of SciencesHarbinHeilongjiang 150081China

Xizang,previously known as Tibet,is located in the southwest region of China and is the highest region of the Qinghai-Tibet Plateau(QzP),with an average altitude of over 4000 m.With the development of modern agriculture,the grain productivity in Xizang has been effectively improved.The total annual grain production has increased from 558,700 tons in 1988 to 1044,000 tons in 2018(Xizang Statistical Year Book).

关键词： sunshine Tibet southwest

Distinct Effects of Three tea Varieties Made Green teas on Improving Diabetic Dyslipidemia Induced by High-Fat Diet in C57BL/6J Mice

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food science and Human Wellness 2024年

作者： Wei Gu Zhutong Wang Guohuo Wu Huimin Guo Huijun Cheng Cong Li Linbo Chen Daxiang Li Zhongwen Xie State Key Laboratory of tea Plant Biology and Utilization School of tea and Food sciences & Technology Anhui agricultural University Center for Biotechnology Anhui agricultural University College of Life sciences Anhui agricultural University tea research institute Yunnan academy of agricultural sciences

Currently， cultivated tea plants are classified into three varieties， namely， C. sinensis var. sinensis， C. sinensis var. assamica， and C. sinensis var. kucha. Three tea varieties made green teas (TVGTs) are widely consumed worldwide. However， a comparative investigation of the beneficial effects， mechanism， and characteristic compounds of TVGTs has not been reported. Here， three representative tea plant varieties， namely， C. sinensis var. sinensis cv. Fuding (FD)， C. sinensis var. assamica cv. Yunkang 10 (YK)， and C. sinensis var. kucha (KC)， planted in the same garden， were used to make green teas utilizing the same standard procedure. Our findings show that the TVGTs effectively improved hyperglycemia， obesity， dyslipidemia， fatty liver， and mesenteric artery (MA) hypercontractility in mice with diabetes and obesity induced by a high-fat diet (HFD) after 11- and 22-week interventions， with YK being the most effective at 22 weeks. Liver lipidomics indicated that the TVGTs restored the glycerophospholipid and sphingolipid balance and reduced triglycerides， with YK demonstrating superior effects. The TVGTs， particularly YK， suppressed triglyceride synthesis through the ARV1-FXR-SHP-SREBP-1c pathway. A chemical profile analysis revealed that YK green tea had enriched active compounds， including caffeine， quinic acid， L-theanine， gallic acid， and catechins， compared with FD and KC green teas， which may contribute to ameliorating diabetic dyslipidemia via synergistic action. As a representative tea variety of C. sinensis var. assamica， YK green tea was found to be superior to the other two green teas in preventing and treating diabetic dyslipidemia， especially with long-term consumption. These data provide important information for tea plant breeders and tea consumers.

关键词：

The auxin transporter OsAUX1 regulates tillering in rice(Oryza sativa)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第5期23卷 1454-1467页

作者： Luqi Jia Yongdong Dai Ziwei Peng Zhibo Cui Xuefei Zhang Yangyang Li Weijiang Tian Guanghua He Yun Li Xianchun Sang Chongqing Key Laboratory of Crop Molecular Improvement/Rice research institute Academy of Agricultural SciencesSouthwest UniversityChongqing400715China Rice and Sorghum research institute Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic BreedingMinistry of Agriculture and Rural AffairsDeyang 618000China

Tillering is an important agronomic trait of rice(Oryza sativa)that affects the number of effective panicles,thereby affecting yields.The phytohormone auxin plays a key role in tillering.Here we identified the high tillering and semi-dwarf 1(htsd1)mutant with auxin-deficiency root characteristics,such as shortened lateral roots,reduced lateral root density,and enlarged root angles.htsd1 showed reduced sensitivity to auxin,but the external application of indole-3-acetic acid(IAA)inhibited its tillering.We identified the mutated gene in htsd1 as AUXIN1(OsAUX1,LOC_Os01g63770),which encodes an auxin influx transporter.The promoter sequence of OsAUX1 contains many SQUAMOSA PROMOTER BINDING PROTEIN-LIKE(SPL)binding sites,and we demonstrated that SPL7 binds to the OsAUX1 promoter.TEOSINTE BRANCHED1(OsTB1),a key gene that negatively regulates tillering,was significantly downregulated in htsd1.Tillering was enhanced in the OsTB1 knockout mutant,and the external application of IAA inhibited tiller elongation in this mutant.Overexpressing OsTB1 restored the multi-tiller phenotype of htsd1.These results suggest that SPL7 directly binds to the OsAUX1 promoter and regulates tillering in rice by altering OsTB1 expression to modulate auxin signaling.

关键词： rice(Oryza sativa L.) tillering indole-3-acetic acid(IAA) OsAUX1 OsTB1

维普期刊数据库

Mapping of powdery mildew resistance genes transferred to common wheat from wild emmer wheat revealed three functional Pm60 haplotypes

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2024年第2期12卷 540-548页

作者： Wenxin Wei Nannan Liu Shengnan Zhang Jing Zhang Wei Pan Xiaoming Xie Zuhuan Yang Junna Sun Jun Ma Zhaorong Hu Weilong Guo Qiaoling Luo Jingzhong Xie Fei He Yinghui Li Chaojie Xie Qixin Sun Key Laboratory of Crop Heterosis and Utilization(MOE)/Key Laboratory of Crop Genetic Improvement China Agricultural UniversityBeijing 100193China institute of Advanced agricultural science Peking UniversityWeifang 261200ShandongChina institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China Triticeae research institute Sichuan Agricultural UniversityChengdu 611130SichuanChina institute of Evolution University of HaifaMt.CarmelHaifa 3498838Israel

Powdery mildew(PM),caused by Blumeria graminis f.***.tritici(Bgt),is one of the destructive wheat diseases worldwide.Wild emmer wheat(Triticum turgidum ssp.dicoccoides,WEW),a tetraploid progenitor of common wheat,is a valuable genetic resource for wheat disease resistance breeding programs.We developed three hexaploid pre-breeding lines with PM resistance genes derived from three WEW accessions.These resistant pre-breeding lines were crossed with susceptible common wheat accessions.Segregations in the F2populations were 3 resistant:1 susceptible,suggesting a single dominant allele in each resistant parent.Mapping of the resistance gene in each line indicated a single locus on the long arm of chromosome 7A,at the approximate location of previously cloned Pm60 from T.urartu.Sanger sequencing revealed three different Pm60 haplotypes(Hap 3,Hap 5,and Hap 6).Co-segregating diagnostic markers were developed for identification and selection of each haplotype.The resistance function of each haplotype was verified by the virus-induced gene silencing(VIGS).Common wheat lines carrying each of these Pm60 haplotypes were resistant to most Bgt isolates and differences in the response arrays suggested allelic variation in response.

关键词： Alleles Blumeria graminus Marker-assisted selection Molecular marker Triticum dicoccoides

维普期刊数据库博看期刊

Zinc lactate alleviates oxidative stress by modulating crosstalk between constitutive androstane receptor signaling pathway and gut microbiota profile in weaned piglets

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2024年第1期16卷 23-33页

作者： Wenjie Tang Xuan Xiang Houfu Wang Wentao Zhou Liuqin He Yulong Yin Tiejun Li College of Animal science and Technology Hunan Agricultural University sichuan academy of Animal sciences Animal Breeding and Genetics Key Laboratory of Sichuan Province Livestock and Poultry Biological Products Key Laboratory of sichuan Province Sichuan Animtech Feed Co. Ltd Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production Institute of Subtropical Agriculture Chinese Academy of Sciences College of Advanced agricultural science University of Chinese Academy of Sciences Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human Health College of Life Sciences Hunan Normal University

This study aimed to determine the regulatory mechanism of dietary zinc lactate (ZL) supplementation on intestinal oxidative stress damage in a paraquat (PQ)-induced piglet model. Twenty-eight piglets (mean body weight 9.51±0.23 kg) weaned at 28 d of age were randomly divided into control, ZL, PQ, and ZL+PQ groups (n=7 in each group). The ZL-supplemented diet had little effect on growth performance under normal physiological conditions. However, under PQ challenge, ZL supplementation significantly improved average daily gain (P<0.05) and reduced the frequency of diarrhea. ZL improved intestinal morphology and ultrastructure by significantly increasing the expression level of the jejunal tight junction protein, zonula occludens-1(ZO-1) (P<0.05), and intestinal zinc transport and absorption in PQ-induced piglets, which reduced intestinal permeability. ZL supplementation also enhanced the expression of antioxidant and antiinflammatory factor-related genes and decreased inflammatory cytokine expression and secretion in PQinduced piglets. Furthermore, ZL treatment significantly inhibited the activation of constitutive androstane receptor (CAR) signaling (P<0.01) in PQ-induced piglets and altered the structure of the gut microbiota, especially by significantly increasing the abundance of beneficial gut microbes, including UCG＿002, Ruminococcus, Rikenellaceae＿RC9＿gut＿group, Christensenellaceae＿R＿7＿group, Treponema, unclassified＿Christensenellaceae, and unclassified＿Erysipelotrichaceae (P <0.05). These data reveal that pre-administration of ZL to piglets can suppress intestinal oxidative stress by improving antioxidant and anti-inflammatory capacity and regulating the crosstalk between CAR signaling and gut microbiota.

关键词： Zinc lactate Intestinal barrier Oxidative stress Inflammation Constitutive androstane receptor Gut microbiota

Systematic identification of wheat spike developmental regulators by integrated multiomics, transcriptional network, GWAS, and genetic analyses

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2024年第3期17卷 438-459页

作者： Xuelei Lin Yongxin Xu Dongzhi Wang Yiman Yang Xiaoyu Zhang Xiaomin Bie Lixuan Gui Zhongxu Chen Yiliang Ding Long Mao Xueyong Zhang Fei Lu Xiansheng Zhang Cristobal Uauyo Xiangdong Fu Jun Xiao Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese academy of sciences Beijing 100049China Nanjing agricultural University NanjingJiangsu 210095China Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTaianShandong 271018China Department of Life science Tcuni Inc.ChengduSichuan 610000China John Innes Centre Norwich Research ParkNorwich NR47UHUK institute of Crop sciences Chinese Academy of Agricultural SciencesBeijing 100081China CAS-JIC Centre of Excellence for Plant and Microbial science(CEPAMS) Institute of Genetics and Developmental BiologyCASBeijing 100101China

The spike architecture of wheat plays a crucial role in determining grain number,making it a key trait for optimization in wheat breeding programs.In this study,we used a multi-omic approach to analyze the transcriptome and epigenome profiles of the young spike at eight developmental stages,revealing co-ordinated changes in chromatin accessibility and H3K27me3 abundance during the flowering transition.We constructed a core transcriptional regulatory network(TRN)that drives wheat spike formation and experimentally validated a multi-layer regulatorymodule involving TaSPL15,TaAGLG1,and TaFUL2.By integrating the TRN with genome-wide association studies,we identified 227 transcription factors,including 42 with known functions and 185 with unknown functions.Further investigation of 61 novel transcription factors using multiple homozygous mutant lines revealed 36 transcription factors that regulate spike architecture or flowering time,such as TaMYC2-A1,TaMYB30-A1,and TaWRKY37-A1.Of particular interest,TaMYB30-A1,downstream of and repressed by WFzP,was found to regulate fertile spikelet number.Notably,the excellent haplotype of TaMYB30-A1,which contains a C allele at the WFzP binding site,was enriched during wheat breeding improvement in China,leading to improved agronomic traits.Finally,we constructed a free and open access Wheat Spike Multi-Omic Database(http://39.***.48.156:8800/#/).Our study identifies novel and high-confidence regulators and offers an effective strategy for dissecting the genetic basis of wheat spike development,with practical value forwheat breeding.

关键词： wheat spike development epigenome TRN TaMYB30-A1 breeding selection

Metabolic and microbial changes in light-vented bulbul during recent northward range expansion

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2024年第1期70卷 24-33页

作者： Yun Wu Ying Xiong Yanzhu Ji Yalin Cheng Qianghui Zhu Xiaolu Jiao Yongbin Chang Na Zhao Jing Yang Fumin Lei Gang Song Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China College of Life science University of Chinese Academy of SciencesBeijing 100049China Department of Zoology College of Life scienceSichuan Agricultural UniversityYa'an 625099SichuanChina Henan Engineering research Center of Bird-Related Outage Zhengzhou Normal UniversityZhengzhou 450044China School of Ecology and Environment Anhui Normal UniversityWuhu 241002AnhuiChina School of Environmental science and Engineering Shaanxi University of Science and TechnologyXian 710021China Centerfor Excellence inAnimal Evolutionand Genetics Chinese Academy of SciencesKunming 650223China

Endotherms recently expanding to cold environments generally exhibit strong physiological acclimation to sustain high body temperature.During this process,gut microbes likely play a considerable role in host physiological functions,including digestion and thermogenesis.The light-vented bulbul Pycnonotus sinensis represents one such species.It used to be restricted to the Oriental realm but expanded its distribution range north to the Palearctic areas during the past few decades.Here,we explored the seasonal dynamics of the resting metabolic rate(RMR)and microbiota for local and newly colonized populations of the species.Our results showed that the mass-adjusted RMR and body mass were pos-itively correlated with latitude variations in both seasons.Consistently,the gut microbiota showed a corresponding variation to the northern cold environments.In the two northern populations,the alpha diversity decreased compared with those of the two southern populations.Significant differences were detected in dominant phyla,such as Firmicutes,Bacteroidetes,Proteobacteria,and Desulfobacterota in both seasons.The core microbiota showed geographic differences in the winter,including the elevated relative abundance of 5 species in northern populations.Finally,to explore the link between microbial communities and host metabolic thermogenesis,we conducted a correlation analysis between microbiota and mass-adjusted RMR.We found that more genera were significantly correlated with mass-adjusted RMR in the wintering season compared to the breeding season(71 vs.23).These results suggest that microbiota of the lighted-vented bulbul linked with thermogenesis in diversity and abundance under northward expansion.

关键词： bird body mass gutmicrobiota RMR season