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CsABF3-activated CsSUT1 pathway is implicated in pre-harvest water deficit inducing sucrose accumulation in citrus fruit

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Horticultural Plant Journal 2024年第1期10卷 103-114页

作者： Xiaochuan Ma Yuanyuan Chang Feifei Li Junfeng Yang Li Ye Tie Zhou Yan Jin Ling Sheng Xiaopeng Lu College of horticulture Hunan Agricultural UniversityChangshaHunan 410128China National Center for Citrus Improvement ChangshaHunan 410128China institute of horticulture Hunan Academy of Agricultural ScienceChangshaHunan 410125China

Pre-harvest water deficit(PHWD)plays an important role in sugar accumulation of citrus ***,the mechanism is not known ***,it was confirmed that PHWD promoted sucrose accumulation of citrus fruit,but had limited effect on fructose,glucose and total acid.A sucrose transporter,Cs SUT1,which localizes to the plasma membrane,was demonstrated to function in sucrose transport induced by *** to wild-type,Cs SUT1 overexpression in citrus calli stimulated sucrose,fructose and glucose accumulation,while its silencing in juice sacs reduced sucrose *** sugar accumulation in transgenic lines enhanced plant drought tolerance,and resulted in decreased electrolyte leakage,malondialdehyde and hydrogen peroxide contents,as well as increased superoxide dismutase activity and proline *** abscisic acid(ABA)-responsive transcription factor,Cs ABF3,was found with a same expression pattern with Cs SUT1 under *** one-hybrid,electrophoretic mobility shift assay and dual-luciferase assays all revealed that Cs ABF3 directly bound with the Cs SUT1 promoter by ABA responsive *** Cs ABF3 was overexpressed in citrus calli,the sucrose,fructose and glucose concentration increased ***,transgenic studies demonstrated that Cs ABF3 could affect sucrose accumulation by regulating Cs ***,this study revealed a regulation of Cs ABF3 promoting Cs SUT1 expression and sucrose accumulation in response to *** results provide a detail insight into the quality formation of citrus fruit.

关键词： Citrus Water deficit Pre-harvest Sucrose CsABF3 CsSUT1

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A mutation in the promoter of the yellow stripe-like transporter gene in cucumber results in a yellow cotyledon phenotype

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Journal of Integrative Agriculture 2024年第3期23卷 849-862页

作者： Jiawei Pan Jia Song Rahat Sharif Xuewen Xu Shutong Li Xuehao Chen School of horticulture and Landscape Architecture Yangzhou UniversityYangzhou 225009China institute of Vegetables Tianjin Academy of Agricultural SciencesTianjin 300384China

Leaf color mutants in higher plants are considered to be ideal materials for studying the chlorophyll biosynthesis,photosynthesis mechanism and chloroplast ***,we identified a spontaneous mutant,yc412,in cultivated cucumber that exhibited yellow *** yellow-lethal mutant was diagnosed with an abnormal chloroplast ultrastructure,and reduced photosynthetic capacity and pigment *** bulked segregant analysis-based whole-genome sequencing and fine genetic mapping,we narrowed the yellow cotyledons (yc) locus to a 96.8 kb interval on chromosome *** resequencing and molecular cloning,we showed that Csyc is a potential candidate gene,which encodes a yellow stripe-like (YSL) *** T to C mutation in the promoter region of Csyc caused the yellow cotyledon phenotype in *** to YZU027A (WT),the expression of Csyc was significantly downregulated in the cotyledons of *** of Csyc in cucumber via virus-induced gene silencing resulted in chlorotic leaves,mainly by suppressing the chlorophyll ***,a comparative transcriptome analysis revealed that chloroplast-related genes and chlorophyll biosynthesis genes were significantly downregulated in yc412 *** results provide new insights into the molecular function of the YSL transporter in plant chloroplast development and chlorophyll synthesis.

关键词： cucumber yellow-lethal cotyledons chloroplast development yellow stripe-like transporter

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JrATHB-12 mediates JrMYB113 and JrMYB27 to control the anthocyanin levels in different types of red walnut

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Journal of Integrative Agriculture 2024年第8期23卷 2649-2661页

作者： Haifeng Xu Guifang Wang Xinying Ji Kun Xiang Tao Wang Meiyong Zhang Guangning Shen Rui Zhang Junpei Zhang Xin Chen Key Laboratory of Huanghuai Protected horticulture Engineering/National Germplasm Repository of Walnut and Chestnut Shandong Institute of PomologyTai’an 271000China Research institute of Forestry Chinese Academy of ForestryBeijing 100091China College of horticulture and Forestry Tarim UniversityAlaer 843300China

Red walnut has broad market prospects because it is richer in anthocyanins than ordinary ***,the mechanism driving anthocyanin biosynthesis in red walnut is still *** studied two types of red walnut,called red walnut 1(R1),with a red pericarp and seed coat,and red walnut 2(R2),with a red seed coat only.R1 mostly contained cyanidin-3-O-galactoside,while R2 contained a various amounts of cyanidin-3-Ogalactoside,cyanidin-3-O-arabinoside,and *** LDOX-2(LOC109007163)and LDOX-3(LOC109010746)genes,which encode leucoanthocyanidin dioxygenase/anthocyanidin synthase(LDOX/ANS),were preliminarily indicated as the crucial genes for anthocyanin biosynthesis in R1 and R2,*** MYB differential genes analysis showed that MYB27 and MYB113 are specifically expressed in the red parts of R1 and R2,respectively,and they are regarded as candidate regulatory *** expression in Arabidopsis and transient injection in walnut showed that both MYB27 and MYB113 were located in the nucleus and promoted anthocyanin accumulation,while MYB27 promoted the expression of LDOX-2,and MYB113 promoted the expression of LDOX-3and *** one-hybrid and electrophoretic mobility shift assays showed that MYB27 could only bind to the LDOX-2 promoter,while MYB113 could bind to the promoters of both LDOX-3 and *** addition,we also identified an HD-Zip transcription factor,ATHB-12,which is specifically expressed in the *** silencing the expression of ATHB-12,the R2 pericarp turned red,and MYB113 expression *** experiments showed that ATHB-12 could specifically interact with MYB113 and bind to its *** suggests that MYB27controls R1 coloration by regulating LDOX-2,while MYB113 controls R2 coloration by regulating LDOX-3 and UAGT-3,but ATHB-12 can specifically bind to and inhibit the MYB113 of the R2 pericarp so that it becomes *** study reveals the anthocyanin biosynthetic mechanisms in two differ

关键词： JrATHB-12 JrMYB113 JrMYB27 red walnut anthocyanin biosynthesis

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A signaling cascade mediating fruit trait development via phosphorylation-modulated nuclear accumulation of JAZ repressor

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Journal of Integrative Plant Biology 2024年第6期66卷 1106-1125页

作者： Wei Wang Jinyao Ouyang Yating Li Changsheng Zhai Bing He Huahan Si Kunsong Chen Jocelyn K.C.Rose Wensuo Jia College of horticulture China Agricultural UniversityBeijing 100193China College of Agriculture and Biotechnology Zhejiang UniversityZijingang CampusHangzhou 310058China Plant Biology Section School of Integrative Plant ScienceCornell UniversityIthaca14853NYUSA institute of horticulture Crops Xinjiang Academy of Agricultural SciencesUrumqi 830000China

It is generally accepted that jasmonate-ZIM domain(JAZ)repressors act to mediate jasmonate(JA)signaling via CORONATINE-INSENSITIVE1(COI1)-mediated ***,we report a cryptic signaling cascade where a JAZ repressor,FvJAZ12,mediates multiple signaling inputs via phosphorylation-modulated subcellular translocation rather than the COI1-mediated degradation mechanism in strawberry(Fragaria vesca).FvJAZ12 acts to regulate flavor metabolism and defense response,and was found to be the target of Fv MPK6,a mitogen-activated protein kinase that is capable of responding to multiple signal ***6 phosphorylates FvJAZ12 at the amino acid residues S179 and T183 adjacent to the PY residues,thereby attenuating its nuclear accumulation and relieving its repression for FvMYC2,which acts to control the expression of lipoxygenase 3(FvLOX3),an important gene involved in JA biosynthesis and a diverse array of cellular *** data reveal a previously unreported mechanism for JA signaling and decipher a signaling cascade that links multiple signaling inputs with fruit trait development.

关键词： defense response JAZ repressor phosphorylation strawberry subcellular translocation

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Research Progress on the Growth-Promoting Effect of Plant Biostimulants on Crops

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 661-679页

作者： Qi Lu Longfei Jin Cuiling Tong Feng Liu Bei Huang Dejian Zhang College of horticulture and Gardening Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of WetlandYangtze UniversityJingzhou434020China institute of Citrus Research Zhejiang Academy of Agricultural SciencesTaizhou318026China Jingzhou institute of Technology Jingzhou434025China

A Plant Biostimulant is any substance or microorganism applied to plants to enhance nutrition efficiency,abioticstress tolerance,and/or crop quality traits,regardless of its nutrient *** application of Plant biostimulants(PBs)in production can reduce the application of traditional pesticides and chemical fertilizers and improvethe quality and yield of crops,which is conducive to the sustainable development of *** in-depthunderstanding of the mechanism and effect of various PBs is very important for how to apply PBs reasonablyand effectively in the practice of crop *** paper summarizes the main classification of PBs;Thegrowth promotion mechanism of PBs was analyzed from four aspects:improving soil physical and chemical properties,enhancing crop nutrient absorption capacity,photosynthesis capacity,and abiotic stress tolerance;At thesame time,the effects of PBs application on seed germination,seedling vigor,crop yield,and quality were summarized;Finally,how to continue to explore and study the use and mechanism of PBs in the future is analyzedand prospected,to better guide the application of PBs in crop production in the future.

关键词： Plant biostimulants growth promoting effect crop production

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Efficiency of Bio-Fertilizing as One of the Natural Alternatives to Improve the Growth of Khaya senegalensis and Swietenia mahagoni Trees and for Sustainability

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Agricultural Sciences 2024年第2期15卷 292-310页

作者： Safaa A. S. Ghorab Nashwa H. Mohamed Nader A. El-Shanhorey Nabal S. El-Shahat Amr R. Rabie Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Ismailia Egypt Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Botanical Gardens Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Giza Egypt

A field experiment was carried out at Ismailia Research Station, Ismailia Governorate from 2020-2022 to improve the growth of Khaya senegalensis and Swietenia mahagoni by using a combination of mineral fertilizer (NPK) and biological fertilizer (Azotobacter chroococcum, Bacillus megatherium, and Bacillus circulant) as recommended dose under new sandy soils conditions. Split plot designed with four treatments (Control, (50% Mineral fertilizer (M.) + 50% Biological fertilizer (Bio.)), 100% M. and 100% Bio.) of each species. Vegetative growth, leaf area, tree biomass, stored carbon, basal area, tree volume, and in the soil both of microbial account and mineral content were determined. The experimental results showed no significant differences between studied species among the most studied parameters except for Khaya senegalensis which gave the highest significant difference in root biomass and below-stored carbon than Swietenia mahagoni. Evidently, the highest significant growth parameters were 100% mineral fertilizer followed by (50% M. + 50% Bio.) as compared with control. No significant difference between 100% M. and (50% M. + 50% Bio.) of shoot dry biomass (15.19 and 12.02 kg, respectively) and above-stored carbon (0.28 and 0.22 Mt, respectively). Microbial account and mineral content in soil were improved after cultivation of tree species compared to before planting and control, especially with 50% mineral fertilizer and 50% bio-fertilizer treatment. In conclusion, a treatment containing 50% mineral fertilizer and 50% bio-fertilizer has led to the ideal Khaya senegalensis and Swietenia mahagoni growth in sandy soil for cheaper and sustainable.

关键词： Khaya senegalensis Swietenia mahagoni Mineral Fertilizer Bio-Fertilizer Growth Parameters Tree Biomass Stored Carbon Sustainable

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The MYC2-PUB22-JAZ4 module plays a crucial role in jasmonate signaling in tomato

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Molecular Plant 2024年第4期17卷 598-613页

作者： Shaofang Wu Chaoyi Hu Changan Zhu Yanfen Fan Jie Zhou Xiaojia Xia Kai Shi Yanhong Zhou Christine H.Foyer Jingquan Yu Department of horticulture Zijingang CampusZhejiang UniversityHangzhou 310058China Hainan institute Zhejiang UniversityYazhou Bay Science and Technology CitySanya 572025China College of horticulture Northwest Agriculture&Forestry UniversityXianyang 712100China School of Biosciences College of Life and Environmental SciencesUniversity of BirminghamEdgbaston B152TTUK Key Laboratory of Horticultural Plants Growth and Development Agricultural Ministry of ChinaZhejiang UniversityHangzhou 310058China

Jasmonates(JAs),a class of lipid-derived stress hormones,play a crucial role across an array of plant physiological processes and stress *** JA signaling is thought to rely predominantly on the degradation of specific JAZ proteins by SCF^(COI1),it remains unclear whether other pathways are involved in the regulation of JAZ protein ***,we report that PUB22,a plant U-box type E3 ubiquitin ligase,plays a critical role in the regulation of plant resistance against Helicoverpa armigera and other JA responses in *** COI1 physically interacts with JAZ1/2/5/7,PUB22 physically interacts with JAZ1/3/4/***22 ubiquitinates JAZ4 to promote its degradation via the 26S proteasome ***,we observed that pub22 mutants showreduced resistance to ***,whereas jaz4 single mutants and jaz1 jaz3 jaz4 jaz6 quadruple mutants have enhanced *** hypersensitivity of pub22 mutants to herbivores could be partially rescued by JAZ4 ***,we found that expression of PUB22 can be transcriptionally activated by MYC2,thus forming a positive feedback circuit in JA *** noticed that the PUB22-JAZ4 module also regulates other JA responses,including defense against ***,inhibition of root elongation,and anthocyanin *** together,these results indicate that PUB22 plays a crucial role in plant growth and defense responses,together with COI1-regulated JA signaling,by targeting specific JAZs.

关键词： PUB22 JAZ COI1 MYC2 JA signaling Solanum lycopersicum

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Genomic selection of eight fruit traits in pear

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Horticultural Plant Journal 2024年第2期10卷 318-326页

作者： Manyi Sun Mingyue Zhang Satish Kumar Mengfan Qin Yueyuan Liu Runze Wang Kaijie Qi Shaoling Zhang Wenjing Chang Jiaming Li Jun Wu College of horticulture State Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjingJiangsu 210095China State Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai'anShandong 271018China The New Zealand institute for Plant and Food Research Limited Private Bag 1401Havelock North 4157New Zealand Zhongshan Biological Breeding Laboratory NanjingJiangsu 210014China

Genomic selection (GS) has the potential to improve selection efficiency and shorten the breeding cycle in fruit tree breeding. In this study,we evaluated the effect of prediction methods, marker density and the training population (TP) size on pear GS for improving its performance and reducing cost. We evaluated GS under two scenarios:(1) five-fold cross-validation in an interspecific pear family;(2) independent validation. Based on the cross-validation scheme, the prediction accuracy (PA) of eight fruit traits varied between 0.33 (fruit core vertical diameter)and 0.65 (stone cell content). Except for single fruit weight, a slightly better prediction accuracy (PA) was observed for the five parametrical methods compared with the two non-parametrical methods. In our TP of 310 individuals, 2 000 single nucleotide polymorphism (SNP) markers were sufficient to make reasonably accurate predictions. PAs for different traits increased by 18.21%-46.98%when the TP size increased from 50to 100, but the increment was smaller (-4.13%-33.91%) when the TP size increased from 200 to 250. For independent validation, the PAs ranged from 0.11 to 0.45 using rrBLUP method. In summary, our results showed that the TP size and SNP numbers had a greater impact on the PA than prediction methods. Furthermore, relatedness among the training and validation sets, and the complexity of traits should be considered when designing a TP to predict the test panel.

关键词： Pear Pyrus Prediction method TP size SNP marker number

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Synthesis of betanin by expression of the core betalain biosynthetic pathway in carrot

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Horticultural Plant Journal 2024年第3期10卷 732-742页

作者： Bo Wang Yahui Wang Yuanjie Deng Quanhong Yao Aisheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement College of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China Shanghai Key Laboratory of Agricultural Genetics and Breeding Biotechnology Research Institute of Shanghai Academy of Agricultural ScienceShanghai 201106China

Betalain has received increased attention because of its high nutritional value and crucial physiological *** on the elucidation of its core biosynthetic pathway,betalain can be produced in additional plants by metabolic *** of betalain in carrot(Daucus carota L.)can improve its nutritional quality and economic value by extracting betalain from the fleshy root,non-edible part,and processing residue of *** this study,two different constructs,namely,pYB:mCD(AomelOS,BvCYP76AD1S,and BvDODA1S)and p YB:CDD(BvCYP76AD1S,BvDODA1S,and MjcDOPA5GTS),were introduced into carrot for betanin synthesis by Agrobacterium-mediated *** can be synthetized in both transgenic calli,and p YB:m CD-transgenic callus can be used to produce betacyanin by suspension ***,pYB:mCD-transgenic seedlings can synthetize betanin only by tyrosine *** p YB:CDD-transgenic lines can synthetize betanin in whole *** betanin content in fleshy root of pYB:CDD-transgenic carrot was(63.4±9)μg·g^(-1)fresh weight according to quantitative *** betanin-producing carrot plant materials can be used to synthesize betanin for industrial application or consumption as dietary sources.

关键词： Daucus carota L. Betanin Biosynthesis Metabolic engineering Biofortification

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Physiological and transcriptome analyses of Chinese cabbage in response to drought stress

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Journal of Integrative Agriculture 2024年第7期23卷 2255-2269页

作者： Lin Chen Chao Li Jiahao Zhang Zongrui Li Qi Zeng Qingguo Sun Xiaowu Wang Limin Zhao Lugang Zhang Baohua Li State Key Laboratory for Crop Stress Resistance and High-Efficiency Production College of HorticultureNorthwest A&F UniversityYangling 712100China institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

Chinese cabbage is an important leafy vegetable crop with high water demand and susceptibility to drought *** explore the molecular mechanisms underlying the response to drought,we performed a transcriptome analysis of drought-tolerant and-sensitive Chinese cabbage genotypes under drought stress,and uncovered core drought-responsive genes and key signaling pathways.A co-expression network was constructed by a weighted gene coexpression network analysis(WGCNA)and candidate hub genes involved in drought tolerance were ***,abscisic acid(ABA)biosynthesis and signaling pathways and their drought responses in Chinese cabbage leaves were systemically *** also found that drought treatment increased the antioxidant enzyme activities and glucosinolate contents *** results substantially enhance our understanding of the molecular mechanisms underlying drought responses in Chinese cabbage.

关键词： Chinese cabbage drought stress abscisic acid weighted gene co-expression network analysis glucosinolate

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