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Upregulation of the glycine-rich protein-encoding gene GhGRPL enhances plant tolerance to abiotic and biotic stressors by promoting secondary cell wall development

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Journal of Integrative Agriculture 2024年第10期23卷 3311-3327页

作者： Wanting Yu Yonglu Dai Junmin Chen Aimin Liang Yiping Wu Qingwei Suo Zhong Chen Xingying Yan Chuannan Wang Hanyan Lai Fanlong Wang Jingyi Zhang Qinzhao Liu Yi Wang Yaohua Li Lingfang Ran Jie Xiang Zhiwu Pei Yuehua Xiao Jianyan Zeng College of Agronomy and Biotechnology Southwest UniversityChongqing 400715China engineering research center of South Upland Agriculture Ministry of EducationChongqing 400715China chongqing Key Laboratory of Crop Molecular Improvement Chongqing 400715China Academy of Agricultural Sciences Southwest UniversityChongqing 400715China

Abiotic and biotic stressors adversely affect plant survival,biomass generation,and crop *** the global availability of arable land declines and the impacts of global warming intensify,such stressors may have increasingly pronounced effects on agricultural ***,researchers face the overarching challenge of comprehensively enhancing plant resilience to abiotic and biotic *** secondary cell wall plays a crucial role in bolstering the stress resistance of *** increase plant resistance to stress through genetic manipulation of the secondary cell wall,we cloned a cell wall protein designated glycine-rich protein-like(GhGRPL)from cotton fibers,and found that it is specifically expressed during the period of secondary cell wall ***,this protein differs from its Arabidopsis homolog,AtGRP,since its glycine-rich domain is deficient in glycine *** is involved in secondary cell wall *** of GhGRPL enhances lignin accumulation and,consequently,the thickness of the secondary cell walls,thereby increasing the plant’s resistance to abiotic stressors,such as drought and salinity,and biotic threats,including Verticillium dahliae ***,interference with GhGRPL expression in cotton reduces lignin accumulation and compromises that *** together,our findings elucidate the role of GhGRPL in regulating secondary cell wall development through its influence on lignin deposition,which,in turn,reinforces cell wall robustness and *** findings highlight the promising near-future prospect of adopting GhGRPL as a viable,effective approach for enhancing plant resilience to abiotic and biotic stress factors.

关键词： glycine-rich protein-like secondary cell wall abiotic stress biotic stress stress resistance

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Review of the application of in-situ sensing techniques to address the tea growth characteristics from leaf to field

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International Journal of Agricultural and Biological engineering 2024年第1期17卷 1-11页

作者： Qiong Cao Chunjiang Zhao Ze Xu Ping Jiang Haibin Yang Xiangyu Meng Guijun Yang Information Technology research center Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China College of Machnical and Electrical engineering Hunan Agricultural UniversityChangsha 410125China Tea research Institute of chongqing Academy of Agricultural Sciences Chongqing 400000China

The tea plant is a valuable and evergreen crop that is extensively cultivated in China and many other ***,there is growing research interest in this *** the tea industry,it is crucial to develop rapid and non-invasive methods to evaluate tea plants in their natural *** article provides a comprehensive overview of non-invasive sensing techniques used for in-situ detection of tea *** topics covered include leaf,canopy,and field-level assessments,as well as statistical analysis techniques and characteristics specific to the ***-invasive testing technology is primarily used for monitoring and predicting tea pests and diseases,monitoring quality,and nutrients,determining tenderness and grade,identifying tea plant varieties,automatically detecting,and identifying tea buds,monitoring tea plant growth,and extracting tea garden areas through remote *** also helps to evaluate planting suitability,assess disasters,and estimate ***,the article examines the challenges and prospects of emerging techniques aimed at resolving the in-situ detection problem for tea *** can assist researchers and producers in comprehensively understanding the tea environment,quality characteristics,and growth process,thereby enhancing tea production quality,and fostering tea industry development.

关键词： non-destructive in-situ detection tea plants growth characteristics sensors

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Ovule number as a rising star for regulating seed yield: Hope or hype

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Journal of Integrative Agriculture 2024年第11期23卷 3623-3640页

作者： Shahid Ullah Khan Ahmad Ali Sumbul Saeed Yonghai Fan Ali Shehazd Hameed Gul Shah Fahad Kun Lu Integrative Science center of Germplasm Creation in Western China (chongqing) Science City and Southwest University College of Agronomy and BiotechnologySouthwest University engineering research center of South Upland Agriculture Ministry of Education Women Medical and Dental College Khyber Medical University National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University School of Environment and Science Griffith University College of Agronomy and Biotechnology Southwest University Department of Agronomy Abdul Wali Khan University Mardan Department of Natural Sciences Lebanese American University

Rapeseed(Brassica napus L.) is the second most widely grown premium oilseed crop globally, mainly for its vegetable oil and protein meal. One of the main goals of breeders is producing high-yield rapeseed cultivars with sustainable production to meet the requirements of the fast-growing population. Besides the pod number, seeds per silique(SS), and thousand-seed weight(TSW), the ovule number(ON) is a decisive yield determining factor of individual plants and the final seed yield. In recent years, tremendous efforts have been made to dissect the genetic and molecular basis of these complex traits, but relatively few genes or loci controlling these traits have been reported thus far. This review highlights the updated information on the hormonal and molecular basis of ON and development in model plants(Arabidopsis thaliana). It also presents what is known about the hormonal, molecular, and genetic mechanism of ovule development and number, and bridges our understanding between the model plant species(A. thaliana) and cultivated species(B. napus). This report will open new pathways for primary and applied research in plant biology and benefit rapeseed breeding programs. This synopsis will stimulate research interest to further understand ovule number determination, its role in yield improvement, and its possible utilization in breeding programs.

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A rapid multiplication system for'Candidatus Liberibacter asiaticus'through regeneration of axillary buds in vitro

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Journal of Integrative Agriculture 2022年第6期21卷 1683-1693页

作者： LEI Tian-gang HE Yong-rui ZOU Xiu-ping WANG Xue-feng FU Shi-min PENG Ai-hong XU Lan-zhen YAO Li-xiao CHEN Shan-chun ZHOU Chang-yong Citrus research Institute Southwest University/National Citrus Engineering Research CenterChongqing 400712P.R.China

‘Candidatus Liberibacter asiaticus(CLas)’,which causes citrus Huanglongbing(HLB)disease,has not been successfully cultured in vitro to ***,a rapid multiplication system for CLas was established through in vitro regeneration of axillary buds from CLas-infected‘Changyecheng’sweet orange(Citrus sinensis Osbeck).Stem segments with a single axillary bud were cultured in vitro to allow CLas to multiply in the regenerating axillary buds.A high CLas titer was detected in the regenerated shoots on an optimized medium at 30 days after germination(DAG).This titer was 28.2-fold higher than in the midribs from CLas-infected trees growing in the *** minimize contamination during in vitro regeneration,CLas-infected axillary buds were micrografted onto seedlings of‘Changyecheng’sweet orange and cultured in a liquid *** this culture,the titers of CLas in regenerated shoots rapidly increased from 7.5×10^(4)to 1.4×10^(8)cellsμg^(-1)of citrus DNA during the first 40 *** percentages of shoots with>1×10^(8)CLas cellsμg^(-1)DNA were 30 and 40%at 30 and 40 DAG,*** tissue blot immunoassay(DTBIA)indicated that the distribution of CLas was much more uniform in regenerated plantlets than in CLas-infected trees growing in the *** disease symptoms in the plantlets were die-back,stunted growth,leaf necrosis/yellowing,and *** death rate of the plantlets was 82.0%at 60 *** results show that CLas can effectively multiply in citrus plantlests in *** method will be useful for studying plant-HLB interactions and for rapid screening of therapeutic compounds against CLas in citrus.

关键词： Citrus ‘Candidatus Liberibacter asiaticus’ multiplication in vitro citrus plantlets

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Preparation and Characterization of Multiester Derivative from plant Oil as Base Stock for Biolubricants

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China Petroleum Processing & Petrochemical Technology 2020年第2期22卷 122-128页

作者： Li Xiong Chen Ligong engineering research center for Waste Oil Recovery Technology and Equipment of Ministry of Education Chongqing Technology and Business UniversityChongqing 400067

As an alternative to petroleum-based lubricants, which are harmful to the environment in excessive amounts, a biodegradable multiester derivative(OFANE) was obtained from plant oil through a chemical modification process with four steps as follows: hydrolysis, esterification, epoxidation, and ring-opening reaction. The physical and chemical properties of OFANE, such as viscosity, acid value, pour point, evaporation loss, and oxidation induction time were measured. Results showed that OFANE had good low-temperature fluidity, thermal-oxidative stability, and tribological properties. The tribological properties of OFANE with dimeric acid additive were evaluated. The final biodegradation experiment indicated that OFANE had excellent biodegradability. The prepared OFANE showed great potential as substitute for petroleum-based lubricating base oils.

关键词： plant oil multiester derivative lubricant base oil physicochemical property tribological property

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The effects of rootstocks on performances of three late-ripening navel orange varieties

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Journal of Integrative Agriculture 2020年第7期19卷 1802-1812页

作者： ZHU Shi-ping HUANG Tao-jiang YU Xin HONG Qi-bin XIANG Jin-song ZENG An-zhong GONG Guizhi ZHAO Xiao-chun Citrus research Institute Southwest University/Chinese Academy of Agricultural SciencesChongqing 400712P.R.China National Citrus engineering research center Chongqing 400712P.R.China Fengie Navel Orange research Institute Chongqing 404699P.R.China

Selection of rootstock is very important for citrus production. Besides its major role on resistance, the rootstock also can affect fruit production and quality. Currently, the main concerns on selection of rootstock for citrus production are compatibility and resistance, due to less information on the impacts of rootstock to the performance of scion varieties. This study aims to provide information on performances of navel orange varieties on different rootstocks. Three late-ripening navel orange varieties(Citrus sinensis var. Powell, Chislett and Banfield) grafted on seven rootstocks(Swingle citrumelo(C. paradisi× P. trifoliata), Carrizo citrange(C. sinensis×P. trifoliata), X639(C. reticulata×P. trifoliata), MXT(C. sinensis×P. trifoliata), Hongju(C. reticulata), Ziyang Xiangcheng(C. junos) and trifoliate orange(P. trifoliata)) were used as plant materials for comprehensive comparison of the performances on tree growth, fruit yield and quality in 21 scion–stock combinations. Investigation was carried out in these combinations in field nine years after planting. Vigorous growth of all the three late-ripening navel orange varieties was observed on Carrizo citrange with the largest canopy volume at 33.34 m3 and the highest yield at 29.43 kg per tree, but a low yield efficiency at 2.87 kg m–3. On the contrary, those on trifoliate orange had the smallest canopy volume at 10.79 m3 and the lowest fruit yield at 12.51 kg per tree, but the highest yield efficiency at 3.95 kg m–3. Rootstocks did not show significant effects on fruit size, fruit shape index, peel thickness and the edible rate of the fruits, but fruit quality was significantly affected by the rootstocks. Fruits from the trees grafted on trifoliate orange presented the best quality with significantly higher total soluble solids(TSS) content than those on Ziyang Xiangcheng and Hongju, and also the highest ratio of TSS/titratable acidity(TA). The TA content was observed from the fruits on X639 at 0.59 g 100 mL–1.

关键词： rootstock late-ripening navel orange growth vigour yield fruit quality

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Small RNA deep sequencing reveals full-length genome of Citrus yellow vein clearing virus in chongqing,China

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Journal of Integrative Agriculture 2017年第2期16卷 503-508页

作者： YU Yun-qi WU Qiong SU Hua-nan WANG Xue-feng CAO Meng-ji ZHOU Chang-yong College of plant Protection Southwest University National Citrus engineering and Technology research center Citrus Research InstituteSouthwest University/Chinese Academy of Agricultural Sciences National Navel Orange engineering and Technology research center Gannan Normal University

To identity the potential pathogen associated with the yellow vein clearing symptom on lemon trees, the profiles of virus-de- rived small interfering RNAs from citrus samples were obtained and analyzed by deep sequencing method in this study. Twenty-seven contigs almost cover the full length genome of Citrus yellow vein clearing virus （CYVCV） isolate YN were obtained using the small RNA deep sequencing technology. Analysis showed that this isolate CQ shared the highest nucleotide identity with isolate Y1 （JX040635） and YN （KP313242）, both of which belong to the genus Mandarivirus in the family Alphaflexiviridae. Mapping analysis of viral-derived siRNA （vsiRNA） profiles revealed an uneven distribution pattern of their generations along both positive and negative genome strands, and 22- and 21-nt vsiRNAs ranked the majority. BLAST against viroids and other viral databases confirmed that this sample was single-infected only by CYVCV, which indicated that CYVCV was the exact causal agent for the yellow clearing symptom occurring on lemon. This is the first CYVCV isolate detected in chongqing and the second in China. This result could provide a molecular basis for the investigation of citrus viral diseases to protect citrus health in this region.

关键词： citrus Citrus yellow vein clearing virus (CYVCV) small RNA deep sequencing

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Development and pathogenicity analysis of full-length infectious cDNA clones of citrus yellow mottle-associated virus in citrus plants

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Journal of Integrative Agriculture 2023年第10期22卷 3034-3041页

作者： WU Jia-xing ZHANG Song LIANG Xiao-fei XING Fei Sagheer ATTA WANG Xue-feng CAO Meng-ji National Citrus engineering and Technology research center Integrative Science Center of Germplasm Creation in Western China(CHONGQING)Science CityCitrus Research InstituteSouthwest UniversityChongqing 400712P.R.China Guangxi Citrus Breeding and Cultivation Technology Innovation center Guangxi Academy of Specialty CropsGuilin 541004P.R.China Department of plant Protection Faculty of Agricultural SciencesGhazi UniversityDera Ghazi Khan 32200Pakistan

Citrus yellow mottle-associated virus(CiYMaV)belonging to the subgenus Mandarivirus within the genus Potexvirus,was first identified in 2018 from Pakistan(CiYMaV-PK),where it is endemic in several ***,three full-length cDNA clones(pCiYMaV-FL-1,pCiYMaV-FL-18,and pCiYMaV-FL-22)corresponding to the genomic RNA of CiYMaV were constructed and then agroinfiltrated on Chandler pummelo(Citrus grandis)seedlings using the vacuum infiltration *** the inoculated plants developed severe vein yellowing,leaf mottling,and dwarfing symptoms by 40 days post-infiltration(dpi).The results of a direct tissue blot immunoassay and reverse transcription polymerase chain reaction detection showed 94.7–100%infection rates of pCiYMaV-FL at 60 *** there being no observed difference among the three clones in the severity of symptom,pCiYMaV-FL-22 showed the highest accumulation levels of viral RNA and coat ***,pCiYMaV-FL-22 successfully infected seven other citrus varieties and induced symptoms in five of *** electron microscopy identified the presence of filamentous virus particles in extracts from systemic leaves of the plants infected with pCiYMaV-FL-22 at 6-months *** together,the results indicate that Koch's postulates were fulfilled for CiYMaV in citrus *** is the first report of full-length infectious cDNA clones of CiYMaV,and thus,the data provide a basis for further study of the molecular mechanisms of virus infection and the development of a viral vector to express foreign genes in citrus plants.

关键词： Mandarivirus vein yellow vacuum infiltration direct tissue blot immunoassay virus morphology

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Development of a target capture sequencing SNP genotyping platform for genetic analysis and genomic breeding in rapeseed

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The Crop Journal 2023年第2期11卷 499-510页

作者： Xiaodong Li Xumei Liu Yonghai Fan Shengting Li Mengna Yu Mingchao Qian Yuling Chen Hongqiao Chen Xinchun Li Bei Liu Xinfu Xu Cunmin Qu Jiana Li Kun Lu Integrative Science center of Germplasm Creation in Western China(chongqing)Science City and Southwest University College of Agronomy and BiotechnologySouthwest UniversityBeibeiChongqing 400715China engineering research center of South Upland Agriculture Ministry of EducationChongqing 400715China Academy of Agricultural Sciences Southwest UniversityBeibeiChongqing 400715China China Golden Marker(Beijing)Biotech Co. Ltd.Beijing 102206China

Rapeseed(Brassica napus)is an oil crop grown worldwide,making it a key plant species in molecular breeding ***,the complexity of its polyploid genome increases sequencing costs and reduces sequencing *** capture coupled with high-throughput sequencing is an efficient approach for detecting genetic variation at genomic regions or loci of *** this study,588 resequenced accessions of rapeseed were used to develop a target capture sequencing SNP genotyping platform named *** platform comprised 54,765,with 54,058 resequenced markers from the pan-genome,and 855 variant trait-associated markers for 12 agronomic *** capture quality of BnaPan50T was demonstrated well in 12 typical *** with a conventional genotyping array,BnaPan50T has a high SNP density and a high proportion of SNPs in unique physical positions and in annotated functional genes,promising wide *** capture sequencing and wholegenome resequencing in 90 doubled-haploid lines yielded 60%specificity,78%uniformity within tenfold coverage range,and 93%genotyping accuracy for the ***50T was used to construct a genetic map for quantitative trait loci(QTL)mapping,identify 21 unique QTL,and predict several candidate genes for yield-related traits in multiple environments.A set of 132 core SNP loci was selected from BnaPan50T to construct DNA fingerprints and germplasm identification *** study provides genomics resources to support target capture sequencing,genetic analysis and genomic breeding of rapeseed.

关键词： Rapeseed Target capture SNP genotyping platform Genomic breeding

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Effects of citrus tree-shape and spraying height of small unmanned aerial vehicle on droplet distribution

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International Journal of Agricultural and Biological engineering 2016年第4期9卷 45-52页

作者： Zhang Pan Deng Lie Lyu Qiang He Shaolan Yi Shilai Liu Yande Yu Yongxu Pan Haiyang Citrus research Institute Southwest UniversityBeibeiChongqing 400712China Institute of Optics-Electrics Technology and Application East China Jiaotong UniversityNanchang 330013China College of plant Protection Southwest UniversityBeibeiChongqing 400715China Zhuhai Green Guards Aviation plant Protection Technology Co.Ltd. Zhuhai 519085GuangdongChina

In order to explore the droplet penetration of spraying with unmanned aerial vehicle(UAV)on citrus trees with different shapes,the tests were carried out at different working *** material was five years old Cocktail grapefruit(Citrus paradisi ***)grafted on Trafoliata(Poncirus trifoliata ***.)and the type of UAV sprayer used was the 3W-LWS-Q60S.A solution of 300 times Ponceau 2R diluents liquid instead of pesticide was used for citrus fields spraying and the droplets were collected by paper *** deposition parameters were extracted and analyzed using digital image processing after scanning the *** results showed that:1)For the trees with round head shape canopy,the droplet depositions of the upper,middle and lower layers had a significant difference at 0.05 *** droplet deposition had the best effect when the working height was 1.0 m,where the average droplet deposition densities were 39.97 droplets/cm2 and the average droplet size was 0.30 mm,but the droplet coverage(3.19%)was lower than that at the working height of 1.5 m(4.27%).2)Under three different working heights of UAV,the tree with open center shape can obtain higher droplet deposition density at all three layers than that with the round head shape *** was especially prominent when the working height was 1.0 m,as the middle layer increased by 49.92%.However,the higher range of droplet deposition density meant larger fluctuation and dispersion.3)The open center shape canopy and the 1.0 m working height obviously improved the droplet coverage rate and droplet density in the citrus *** these parameters of open center shape citrus tree,there was no obvious difference in the front and rear direction,but in the left and middle part of the tree crown,the difference reached a 0.05 significant *** droplet deposition characteristics and the spray uniformity,the UAV performed better when working on open center shape plants at a 1.0 m working height.

关键词： citrus tree shape unmanned aerial vehicle(UAV) droplet deposition

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