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Transcriptome and metabolome analysis of preharvest internal browning in Nane plum fruit caused by high temperature

Horticultural Plant Journal 2024年第5期10卷 1099-1111页

作者： Cheng Peng Linping Deng Hejun Tan Wancong Meng Jianliang Luo Zengwen Zhang Huiqiong Chen Jishui Qiu Xiaoxiao Chang Yusheng Lu Institute of fruit tree Research Guangdong Academy of Agricultural SciencesKey Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhouGuangdong 510640China Lechang Lingnan Institute of Deciduous fruit tree Research ShaoguanGuangdong 512200China

The preharvest internal browning of Nane plum fruit,with no visible effects on the appearance of the fruit,has become a serious problem in recent years in its production area in Guangdong province,*** study investigated the effects of environmental factors,including temperature,on Nane plum internal *** orchards at different elevations with different incidences of internal browning were *** fruits with different internal browning incidence levels,the internal browning mechanism was analyzed with transcriptome and metabolome *** results revealed decreased internal browning at high *** treatment significantly reduced internal browning,whereas bagging and insect-proof net-covering treatments significantly increased internal *** bagging and net coverings increase the local ambient temperature,the findings suggest that high temperature is an important factor influencing the internal browning of Nane *** metabolome experiments showed that with increased internal browning,the levels of phenolic hydroxyls such as catechol increased,with simultaneous increases in hydrogen peroxide content and oxidase *** can be speculated that the oxidation of phenolic hydroxyl substances is the main cause of the preharvest browning of Nane *** analysis revealed the increased expression of calcium signaling-related and downstream effector genes and indicated an important role of calcium in internal browning,possibly due to its increased content in the ***,with increasingly serious internal browning,genes related to photosynthesis were down-regulated,while genes related to senescence were up-regulated,thus suggesting the up-regulation of the process of cell senescence during internal *** conclusion,heat stress should be eliminated to reduce preharvest internal browning in Nane plum.

关键词： Nane plum fruit internal browning High temperature Calcium

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Construction of high-density SNP genetic maps and QTL mapping for dwarf-related traits in Litchi chinensis Sonn

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Journal of Integrative Agriculture 2021年第11期20卷 2900-2913页

作者： HU Fu-chu CHEN Zhe WANG Xiang-he WANG Jia-bao FAN Hong-yan QIN Yong-hua ZHAO Jie-tang HU Gui-bing State key laboratory for Conservation and Utilization of Subtropical Agro-bioresources/key laboratory of biology and Genetic Improvement of Horticultural Crops(South China) Ministry of Agriculture and Rural Affairs/College of HorticultureSouth China Agricultural UniversityGuangzhou 510642P.R.China key laboratory of tropical fruit tree biology of hainan province/Institute of tropical fruit trees Hainan Academy of Agricultural ScienceHaikou 571100P.R.China Environment and Plant Protection Institute Chinese Academy of Tropical Agricultural SciencesHaikou 571101P.R.China

Litchi chinensis Sonn is widely cultivated in subtropical regions and has an important economic value.A high-density genetic map is a valuable tool for mapping quantitative trait loci(QTL)and marker-assisted breeding *** this study,a single nucleotide polymorphism(SNP)-based high-density linkage map was constructed by a genotyping-by-sequencing(GBS)protocol using an F1 population of 178 progenies between two commercial litchi cultivars,‘Ziniangxi’(dwarf)and‘Feizixiao’(vigorous).The genetic map consisted of 3027 SNP markers with a total length of 1711.97 cM in 15 linkage groups(LGs)and an average marker distance of 0.57 *** on this high-density linkage map and three years of phenotyping,a total of 37 QTLs were detected for eight dwarf-related traits,including length of new branch(LNB),diameter of new branch(DNB),length of common petiole(LCP),diameter of common petiole(DCP),length of internode(LI),length of single leaf(LSL),width of single leaf(WSL),and plant height(PH).These QTLs could explain 8.0 to 14.7%(mean=9.7%)of the phenotypic *** them,several QTL clusters were observed,particularly on LG04 and LG11,which might show enrichment for genes regulating the dwarf-related traits in *** were 126 candidate genes identified within the QTL regions,55 of which are differentially expressed genes by RNA-seq analysis between‘Ziniangxi’and‘Feizixiao’.These DEGs were found to participate in the regulation of cell development,material transportation,signal transduction,and plant morphogenesis,so they might play important roles in regulating plant dwarf-related *** high-density genetic map and QTLs identification related to dwarf traits can provide a valuable genetic resource and a basis for marker-assisted selection and genomic studies of litchi.

关键词： Litchi chinensis SNP genetic map dwarf-related traits QTL analysis genotyping-by-sequencing(GBS)

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Tissue distribution of cadmium and its effect on reproduction in Spodoptera exigua

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Journal of Integrative Agriculture 2024年第1期23卷 195-204页

作者： Honghua Su Menglu Wu Yong Yang Yan Deng Yizhong Yang Qingming Sun College of Plant Protection Yangzhou UniversityYangzhou 225009China Institute of fruit tree Research Guangdong Academy of Agricultural Sciences/Key Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhou 510640China

Vegetable fields are often contaminated by heavy metals,and Spodoptera exigua is a major vegetable pest which is stressed by heavy metals mainly by *** this study,cadmium accumulation in the tissues of *** exposed to cadmium and its effects on the growth and development of the parents and the offspring were *** the stress of different concentrations of cadmium(0.2,3.2,and 51.2 mg kg^(-1)),the cadmium content in each tissue of *** increased in a dose-dependent *** the larval stage,the highest cadmium accumulation was found in midgut in all three cadmium treatments,but at the adult stage,the highest cadmium content was found in fat *** addition,the cadmium content in ovaries was much higher than in *** *** was stressed by cadmium and the F_(2)generation was not fed a cadmium-containing diet,the larval survival,pupation rate,emergence rate and fecundity of the F_(2)generation were significantly reduced in the 51.2 mg kg^(-1)treatment compared to the corresponding *** in the F_(2)generation of the 3.2 mg kg^(-1)treatment,the fecundity was significantly lower than in the parental *** fecundity of the only-female stressed treatment was significantly lower than that of the only-male stressed treatment at the 3.2 and 51.2 mg kg^(-1)cadmium exposure *** only mothers were stressed at the larval stage,the fecundity of the F_(2)generation was significantly lower than that of the F1generation in the 51.2 mg kg^(-1)treatment,and it was also significantly lower than in the 3.2 and 0.2 mg kg^(-1)*** results of our study can provide useful information for forecasting the population increase trends under different heavy metal stress conditions and for the reliable environmental risk assessment of heavy metal pollution.

关键词： heavy metal pollution cadmium Spodoptera exigua tissue distribution reproduction

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Transcriptomic analysis reveals the defense mechanisms of citrus infested with Diaphorina citri

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Horticultural Plant Journal 2023年第3期9卷 450-462页

作者： Xueli Sun Ting Yu Minliang Bin Chunhua Hu Fangcheng Bi Xinxiang Peng Ganjun Yi Xinxin Zhang State key laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life SciencesSouth China Agricultural UniversityGuangzhouGuangdong 510642China key laboratory of South Subtropical fruit biology and Genetic Resource Utilization(MOA) Guangdong Province Key Laboratory of Tropical and Subtropical Fruit Tree ResearchInstitute of Fruit Tree ResearchGuangdong Academy of Agricultural SciencesGuangzhouGuangdong 510640China Agricultural Biological Gene Research Center Guangdong Academy of Agricultural SciencesGuangzhouGuangdong 510640China

Huanglongbing(HLB) is a devastating disease that has led to an acute crisis for growers of citrus, one of the world's most important fruit crops. The phloem-feeding Asian citrus psyllid(ACP), Diaphorina citri, is the main pest at the new shoot stage and is the only natural vector of HLB pathogenic bacteria. Little is known about how plants perceive and defend themselves from this destructive pest. Here, we characterized changes in the expression of various genes in citrus plants that were continuously infested by D. citri for different durations(12, 24, and 48 h). A total of 5 219 differentially expressed genes(DEGs) and 643 common DEGs were identified across all time points. Several pathways related to defense were activated, such as peroxisome, alpha-linolenic acid metabolism, and phenylpropanoid and terpenoid biosynthesis, and some pathways related to growth and signal transduction were suppressed in response to D. citri infestation. The expression of genes including kinases(CML44, CIPK6, and XTH6), phytohormones(SAMT, LOX6, and NPR3), transcription factors(bHLH162, WRKY70, and WRKY40), and secondary metabolite synthesis-related genes(PAL, 4CL2, UGT74B1 and CYP82G1) was significantly altered in response to D. citri infestation. The findings of this study greatly enhance our understanding of the mechanisms underlying the defense response of citrus plants to D. citri infestation at the molecular level. Functional characterization of the candidate defense-related genes identified in this study will aid the molecular breeding of insect-resistant citrus varieties.

关键词： Asian citrus psyllid Citrus Diaphorina citri Huanglongbing Infestation RNA-seq

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Metabolic Profiling in Banana Pseudo-Stem Reveals a Diverse Set of Bioactive Compounds with Potential Nutritional and Industrial Applications

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Phyton-International Journal of Experimental Botany 2020年第4期89卷 1101-1130页

作者： Guiming Deng Ou Sheng Fangcheng Bi Chunyu Li Tongxin Dou Tao Dong Qiaosong Yang Huijun Gao Jing Liu Xiaohong Zhong Miao Peng Ganjun Yi Weidi He Chunhua Hu Institute of fruit tree Research Guangdong Academy of Agricultural SciencesGuangzhou510640China key laboratory of South Subtropical fruit biology and Genetic Resource Utilization Ministry of AgricultureGuangzhou510640China key laboratory of tropical and Subtropical fruit tree Research Guangzhou510640China Horticulture and Landscape College Hunan Agricultural UniversityChangsha410128China

Banana(Musa spp.)is an ancient and popular fruit plant with highly nutritious *** pseudo-stem of banana represents on average 75%of the total dry mass but its valorization as a nutritional and industrial by-product is *** advances in metabolomics have paved the way to understand and evaluate the presence of diverse sets of metabolites in different plant *** study aimed at exploring the diversity of primary and secondary metabolites in the banana ***,we identified and quantified 373 metabolites from a diverse range of classes including,alkaloids,flavonoids,lipids,phenolic acids,amino acids and its derivatives,nucleotide and its derivatives,organic acids,lignans and coumarins,tannins,and terpene using the widely-targeted metabolomics *** pseudo-stem is enriched in metabolites for utilization in the food industry(L-lysine and L-tryptophan,L-glutamic acid,Phenylalanine,Palmitoleic acid,α-Linolenic acid,and Lauric acid,and Adenine)and pharmaceutical industry(Guanosine and Cimidahurinine,Bergapten,Coumarins,Procyanidin A2,Procyanidin B1,Procyanidin B3,Procyanidin B2,and Procyanidin B4,Asiatic acid).The metabolome of banana pseudo-stem with integration across multiomics data may provide the opportunity to exploit the rich metabolome of banana pseudo-stem for industrial and nutritional applications.

关键词： Banana pseudo-stem widely-targeted metabolomics alkaloids crop waste valorization

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Growth and physiological responses of four kiwifruit genotypes to salt stress and resistance evaluation

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Journal of Integrative Agriculture 2019年第1期18卷 83-95页

作者： ZHONG Yun-peng QI Xiu-juan CHEN Jin-yong LI Zhi BAI Dan-feng WEI Cui-guo FANG Jin-bao key laboratory for fruit tree Growth Development and Quality ControlZhengzhou Fruit Research InstituteChinese Academy of Agricultural Sciences

In this study,four genotypes(Acva-1,Acva-2,Acva-3 and ZM-2) of Actinidia germplasm resources were grown in different NaCl concentrations(0,0.4,0.8 and 1.2 g L–1).The growth,physiological and biochemical indicators were measured,and a graded scale was developed as the salt damage index(SDI) according to different damage symptoms in *** results showed SDI increased gradually,and average number and length of new shoot decreased *** antioxidant enzymes(superoxide dismutase,peroxidase and catalase) and two osmotic adjustment substances(soluble sugar and proline) showed different changes in old and new leaves of four *** values exhibited a decreased trend in the whole except in the new leaves of *** contents increased and root activity decreased with the increasing salt *** component analysis was used to assess the salt tolerance,and the results showed Acva-3,from Actinidia valvata Dunn.,had the strongest tolerance to salt,and could be a potential resistant resource to the salt-tolerance dedicated rootstock breeding of kiwifruit.

关键词： kiwifruit salt stress principal component analysis resistance evaluation

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Effect of Forchlorfenuron (CPPU) and Ethychlozate on fruit Development and Quality of Mango Cultivar 'Tainong 1'

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Plant Diseases and Pests 2017年第1期8卷 39-42页

作者： Guo Lijun Fan Hongyan Deng Huidong Luo Zhiwen He Shu Hu Fuchu Wang Xianghe He Fan Hua Min Institute of tropical fruit trees Hainan Academy of Agricultural Science/Haikou Investigation Station of Tropical Fruit TreesMinistry of Agriculture/Key Laboratory of Tropical Fruit Tree Biology of Hainan Province Institute of Plant Protection Hainan Academy of Agricultural Science

The fruit swelling effect of forchlorfenurun （CPPU） and fruit thinning effect of ethychlozate on Tainong 1 mango （Mangifera indica L. cv. ） were studied. Spraying 32 mg/L CPPU at 7 and 21 d post flowering for just once significantly improved the fruit size of mango, but had no significant impact on fruit quality and flavor. Spraying 200 mg/L ethychlozate at 7 d post flowering for just once significantly increased fruit drop rate and single fruit weight of mango; fruit grade was improved and total soluble solid increased to the maximum value, so ethychlozate had good fruit thinning effect.

关键词： Mango CPPU Ethychlozate fruit quality Tainong 1 fruit size

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Combined effect of Bacillus siamensis and chlorogenic acid on maintenance of quality and control of disease in stored wax apple fruit

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Food Quality and Safety 2022年第4期6卷 475-486页

作者： Ziyu Cheng Rui Li Zecheng Jiang Yue Tang Wen Li Yuanzhi Shao School of Food Science and Engineering Hainan UniversityHaikouChina School of Horticulture Hainan UniversityHaikouChina key laboratory for Quality Regulation of tropical Horticultural Crops of hainan province Hainan UniversityHaikouChina School of Life Science Hainan UniversityHaikouChina

Objectives:The purpose of this study was to evaluate the effect of combined postharvest use of Bacillus siamensis strain and chlorogenic acid on quality maintenance and disease control in wax apple *** and Methods:Wax apple fruit were treated with Bacillus siamensis strain(N1),chlorogenic acid(CHA)and N1+CHA and preserved at 25℃ for 12 *** appearance and quality parameters were evaluated,along with the disease index,content of total soluble solids(TSS),total acid(TA),vitamin C(Vc),total phenolic,and flavonoids during cold ***,the activities ofβ-1,3-glucanase(GLU),phenylalanine ammonialyase(PAL),polyphenol oxidase(PPO),and peroxidase(POD)were ***,the transcriptome and the expression level of key defense enzyme genes were analyzed by RNA-seq and real-time quantitative reverse transcription polymerase chain ***:N1+CHA treatment significantly lowered DI and delayed fruit quality deterioration by slowing TSS and TA loss and enhancing anti-oxidant capacity,including Vc,total phenolic,and flavonoids ***,the activities of GLU,PAL,PPO,and POD were dramatically increased by N1+CHA ***,N1+CHA treatment modulated several metabolic pathways,including those involved in planthormone signal transduction and plant–pathogen *** expression levels of key defense enzyme genes were significantly upregulated in stored wax apple fruit by the N1+CHA treatment,which were well coincided with the transcriptome ***:The combined use of N1+CHA significantly prevents disease and maintains fruit quality of wax apple during *** findings indicate that it could serve as a promising biological technique for preserving wax apple fruit.

关键词： wax apple fruit Bacillus siamensis chlorogenic acid storage quality disease defense

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The Clausena lansium genome provides new insights into alkaloid diversity and the evolution of the methyltransferase family

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Journal of Integrative Agriculture 2024年第10期23卷 3537-3553页

作者： Yongzan Wei Yi Wang Fuchu Hu Wei Wang Changbin Wei Bingqiang Xu Liqin Liu Huayang Li Can Wang Hongna Zhang Zhenchang Liang Jianghui Xie State key laboratory of Biological Breeding of tropical Crops Institute of Tropical Bioscience and BiotechnologyChineseAcademy of Tropical Agricultural SciencesHaikou 571101China key laboratory of Genetic Resources Evaluation and Utilization of tropical fruits and Vegetables(Co-construction by Ministryand province) Ministry of Agriculture and Rural Affairs/Institute of Tropical Fruit TreesHainan Academy of Agricultural SciencesHaikou 571100China Beijing key laboratory of Grape Sciences and Enology CAS Key Laboratory of Plant ResourcesInstitute of BotanyChineseAcademy of SciencesBeijing 100093China key laboratory of tropical fruit biology(Ministry of Agriculture and Rural Affairs) South Subtropical Crops Research InstituteChinese Academy of Tropical Agricultural SciencesZhanjiang 524091China Haikou Experimental Station Chinese Academy of Tropical Agricultural SciencesHaikou 571101China Sanya Institute of Breeding and Multiplication/School of tropical Agriculture and Forestry Hainan UniversityHaikou 570228China Sanya Research Academy Chinese Academy of Tropical Agricultural SciencesSanya 572019China

Wampee(Clausena lansium)is an important evergreen fruit tree native to southern China that has a long history of use for medicinal ***,a chromosome-level genome of *** was constructed with a genome size of 282.9 Mb and scaffold N50 of 30.75 *** assembled genome contains 48.70%repetitive elements and 24,381 protein-coding *** genomic analysis showed that *** diverged from Aurantioideae 15.91-24.95 million years ***,some expansive and specific gene families related to methyltransferase activity and S-adenosylmethionine-dependent methyltransferase activity were also *** analysis indicated that N-methyltransferase(NMT)is mainly involved in alkaloid biosynthesis and O-methyltransferase(OMT)participates in the regulation of coumarin accumulation in *** suggested that wampee's richness in alkaloids and coumarins might be due to the gene expansions of NMT and *** tandem repeat event was one of the major reasons for the NMT ***,the reference genome of *** will facilitate the identification of some useful medicinal compounds from wampee resources and reveal their biosynthetic pathways.

关键词： Clausena lansium genome evolution methyltransferase activity alkaloid biosynthesis coumarin accumulation

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High-quality genome assemblies for two Australimusa bananas(Musa spp.)and insights into regulatory mechanisms of superior fiber properties

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Plant Communications 2024年第1期5卷 245-261页

作者： Run Zhou Shuo Wang Ni Zhan Weidi He Guiming Deng Tongxin Dou Xi-Tong Zhu Wen-Zhao Xie Yu-Yu Zheng Chunhua Hu Fangcheng Bi Huijun Gao Tao Dong Siwen Liu Chunyu Li Qiaosong Yang Lingqiang Wang Jia-Ming Song Jiangbo Dang Qigao Guo Ganjun Yi Ling-Ling Chen Ou Sheng Institute of fruit tree Research Guangdong Academy of Agricultural SciencesKey Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhou 510640China College of Informatics Huazhong Agricultural UniversityWuhan 430070China State key laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China College of Horticulture and Landscape Architecture Southwest UniversityChongqing 400715China

Bananas(Musa spp.)are monocotyledonous plants with high genetic diversity in the Musaceae family that are cultivated mainly in tropical and subtropical *** fruits are a popular food,and the plants themselves have diverse *** genetic groups(genomes)are thought to have contributed to current banana cultivars:Musa acuminata(A genome),Musa balbisiana(B genome),Musa schizocarpa(S genome),and species of the Australimusa section(T genome).However,the T genome has not been effectively ***,we present the high-quality TT genomes of two representative accessions,Abaca(Musa textilis),with high-quality naturalfiber,and Utafun(Musa troglodytarum,Fe’i group),with abundant *** the Abaca and Utafun assemblies comprise 10 pseudochromosomes,and their total genome sizes are 613 Mb and 619 Mb,*** genome analysis revealed that the larger size of the T genome is likely attributable to rapid expansion and slow removal of *** with those of Musa AA or BB accessions or sisal(Agava sisalana),Abacafibers exhibit superior mechanical properties,mainly because of their thicker cell walls with a higher content of cellulose,lignin,and *** of MusaCesA cellulose synthesis genes peaks earlier in Abaca than in AA or BB accessions during plant development,potentially leading to earlier cellulose accumulation during secondary cell wall *** Abaca-specific expressed gene MusaMYB26,which is directly regulated by MusaMYB61,may be an important regulator that promotes precocious expression of secondary cell wall ***,MusaWRKY2 and MusaNAC68,which appear to be involved in regulating expression of MusaLAC and MusaCAD,may at least partially explain the high accumulation of lignin in *** work contributes to a better understanding of banana domestica-tion and the diverse genetic resources in the Musaceae family,thus providing resources for Musa genetic improvement.

关键词： Australimusa bananas T genome Musaceae evolution structural variations fiber

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