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Genome-wide identifcation of the histone acetyltransferase gene family in Citrus clementina and its potential roles in citrate metabolism

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Food quality and Safety 2024年第1期8卷 201-211页

作者： Xiahui Lin Yanna Shi Shengchao Liu Xincheng Liu Minglei Zhang Bo Zhang Shaojia Li Kunsong Chen College of agriculture and Biotechnology Zhejiang UniversityZijingang CampusHangzhouChina Zhejiang Provincial Key laboratory of horticultural plant Integrative biology Zhejiang UniversityZijingang CampusHangzhouChina The state agriculture ministry laboratory of horticultural plant growth Development and Quality ImprovementZhejiang UniversityZijingang CampusHangzhouChina Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina Institute of Horticulture Jiangxi Academy of Agricultural SciencesNanchangChina

Histone acetyltransferase(HAT)catalyzes histone acetylation and is involved in plant growth and development and stress ***,37 CitHAT genes were identifed in Citrus *** physicochemical properties,chromosomal location,gene structure,conserved domain and motif,and cis-acting elements were *** were classifed into four subfamilies based on protein sequence homology,which was strongly supported by gene structure,conserved domain,and motif *** cis-acting elements in gene promoter regions were predicted to be associated with the regulation of plant growth,stress resistance,and response to *** and transcriptomic analyses of citrus callus with mock treatment and HAT inhibitor treatment revealed that increased citric acid content in inhibitor treatment may be attributed to differential expression of CitPEPCK2 and CitGS2,which may be due to the hypo-acetylation of histone *** expression patterns of CitHATs in citrus fruit development stages showed that CitHAG11 and CitHAG28 exhibited a negative correlation with citric acid *** study associates the potential function of histone acetyltransferases in citrate metabolism and extends the molecular mechanism of citrate metabolism in fruits.

关键词： Citrus histone acetyltransferases citric acid citrate metabolism histone acetylation.

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

DNA methylation controlling abscisic acid catabolism responds to light to mediate strawberry fruit ripening

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Journal of Integrative plant biology 2024年第8期66卷 1718-1734页

作者： Yunfan Sun Xiaofang Yang Rongrong Wu Shouzheng Lv Yunduan Li Haoran Jia Yuying Yang Baijun Li Wenbo Chen Andrew C.Allan Guihua Jiang Yan-Na Shi Kunsong Chen College of agriculture&Biotechnology Zhejiang UniversityZijingang CampusHangzhou 310058China Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiang 310021China Zhejiang Provincial Key laboratory of horticultural plant Integrative biology Zhejiang UniversityZijingang CampusHangzhou 310058China The state agriculture ministry laboratory of horticultural plant growth Development and Quality ImprovementZhejiang UniversityZijingang CampusHangzhou 310058China New Zealand Institute for plant&Food Research Limited Private Bag 92169AucklandNew Zealand School of Biological Sciences University of AucklandPrivate Bag 92019AucklandNew Zealand

Phytohormones,epigenetic regulation and environmental factors regulate fruit ripening but their interplay during strawberry fruit ripening remains to be *** this study,bagged strawberry fruit exhibited delayed ripening compared with fruit grown in normal light,correlating with reduced abscisic acid(ABA) *** of the key ABA catabolism gene,ABA 8′-hydroxylase FaCYP707A4,was induced in bagged *** light exclusion whole genome DNA methylation levels were up-regulated,corresponding to a delayed ripening process,while DNA methylation levels in the promoter of FaCYP707A4 were suppressed,correlating with increases in transcript and decreased ABA *** indicated FaCRY1,a blue light receptor repressed in bagged fruit and FaAGO4,a key protein involved in RNA-directed DNA methylation,could bind to the promoter of *** interaction between FaCRY1 and FaAGO4,and an increased enrichment of FaAGO4 directed to the FaCYP707A4 promoter in fruit grown under light suggests FaCRY1 may influence FaAGO4 to modulate the DNA methylation status of the FaCYP707A4 ***,transient overexpression of FaCRY1,or an increase in FaCRY1 transcription by blue light treatment,increases the methylation level of the FaCYP707A4 promoter,while transient RNA interference of FaCRY1 displayed opposite *** findings reveal a mechanism by which DNA methylation influences ABA catabolism,and participates in light-mediated strawberry ripening.

关键词： ABA catabolism DNA methylation light ripening strawberry

Camellia sinensis CsMYB4a participates in regulation of stamen growth by interaction with auxin signaling transduction repressor CsAUX/IAA4

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The Crop Journal 2024年第1期12卷 188-201页

作者： Guoliang Ma Mingzhuo Li Yingling Wu Changjuan Jiang Yifan Chen Dawei Xing Yue Zhao Yajun Liu Xiaolan Jiang Tao Xia Liping Gao School of Life Science Anhui Agricultural UniversityHefei 230036AnhuiChina plant for Human Health Institute Department of Plant and Microbial BiologyNorth Carolina State UniversityKannapolisNC 28081USA state Key laboratory of Tea plant biology and Utilization/Key laboratory of Tea biology and Tea Processing of ministry of agriculture/Anhui Provincial laboratory of Tea plant biology and Utilization Anhui Agricultural UniversityHefei 230036AnhuiChina

Subgroup 4(Sg4)members of the R2R3-MYB are generally known as negative regulators of the phenylpropanoid pathway in *** previous research showed that a R2R3-MYB Sg4 member from Camellia sinensis(CsMYB4a)inhibits expression of some genes in the phenylpropanoid pathway,but its physiological function in the tea plant remained ***,CsMYB4a was found to be highly expressed in anther and filaments,and participated in regulating filament *** analysis and exogenous auxin treatment showed that the target of CsMYB4a might be the auxin signal ***/indole-3-acetic acid 4(AUX/IAA4),a repressor in auxin signal transduction,was detected from a yeast two-hybrid screen using CsMYB4a as *** silencing assays showed that both CsIAA4 and CsMYB4a regulate filament *** plants overexpressing CsIAA4 were insensitive to exogenous a-NAA,consistent with overexpression of ***-protein interaction experiments revealed that CsMYB4a interacts with N-terminal of CsIAA4 to prevent CsIAA4 *** out of the endogenous NtIAA4 gene,a CsIAA4 homolog,in tobacco alleviated filament growth inhibition and a-NAA insensitivity in plants overexpressing *** results strongly suggest that CsMYB4a works synergistically with CsIAA4 and participates in regulation of the auxin pathway in stamen.

关键词： AUX/IAA4 Auxin signaling CsMYB4a Subgroup 4 R2R3-MYB

A pair of nuclear factor Y transcription factors act as positive regulators in jasmonate signaling and disease resistance in Arabidopsis

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Journal of Integrative plant biology 2024年第9期66卷 2042-2057页

作者： Chuyu Lin Chenghao Lan Xiaoxiao Li Wei Xie Fucheng Lin Yan Liang Zeng Tao ministry of agriculture Key laboratory of Molecular biology of Crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China state Key laboratory for Managing Biotic and Chemical Treats to the quality and Safety of Agro‐products Institute of BiotechnologyZhejiang UniversityHangzhou 311400China

The plant hormone jasmonate(JA)regulates plant growth and immunity by orchestrating a genome-wide transcriptional *** the resting stage,JASMONATE-ZIM DOMAIN(JAZ)proteins act as main repressors to regulate the expression of JA-responsive genes in the JA signaling ***,the mechanisms underlying de-repression of JA-responsive genes in response to JA treatment remain ***,we report two nuclear factor Y transcription factors NF-YB2 and NF-YB3(thereafter YB2 and YB3)play key roles in such de-repression in ***2 and YB3 function redundantly and positively regulate plant resistance against the necrotrophic pathogen Botrytis cinerea,which are specially required for transcriptional activation of a set of JA-responsive genes following ***,YB2 and YB3 modulated their expression through direct occupancy and interaction with histone demethylase Ref6 to remove repressive histone ***,YB2 and YB3 physically interacted with JAZ repressors and negatively modulated their abundance,which in turn attenuated the inhibition of JAZ proteins on the transcription of JA-responsive genes,thereby activating JA response and promoting disease ***,our study reveals the positive regulators of YB2 and YB3 in JA signaling by positively regulating transcription of JA-responsive genes and negatively modulating the abundance of JAZ proteins.

关键词： histone demethylase jasmonate response JAZ repressor necrotrophic resistance nuclear factor

A bHLH transcription factor,CsSPT,regulates high-temperature resistance in cucumber

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horticultural plant Journal 2024年第2期10卷 503-514页

作者： Yonggui Liang Chenyu Yang Fangyan Ming Bingwei Yu Zhihua Cheng Yixi Wang Zhengkun Qiu Xiaolan Zhang Bihao Cao Shuangshuang Yan Key laboratory of biology and Genetic Improvement of horticultural Crops(South China) Ministry of Agriculture and Rural AffairsGuangdong Vegetable Engineering and Technology Research CenterCollege of HorticultureSouth China Agricultural UniversityGuangzhouGuangdong 510642China state Key Laboratories of Agrobiotechnology Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable CropsMOE Joint Laboratory for International Cooperation in Crop Molecular BreedingChina Agricultural UniversityBeijing 100193China

High-temperature stress threatens the growth and yield of crops. Basic helix-loop-helix(bHLH) transcription factors(TFs) have been shown to play important roles in regulating high-temperature resistance in plants. However, the bHLH TFs responsible for high-temperature tolerance in cucumbers have not been identified. We used transcriptome profiling to screen the high temperature-responsive candidate bHLH TFs in cucumber. Here, we found that the expression of 75 CsbHLH genes was altered under high-temperature stress. The expression of the CsSPT gene was induced by high temperatures in TT(Thermotolerant) cucumber plants. However, the Csspt mutant plants obtained by the CRISPR-Cas9 system showed severe thermosensitive symptoms, including wilted leaves with brown margins and reduced root density and cell *** Csspt mutant plants also exhibited elevated H_(2)O_(2) levels and down-regulated photosystem-related genes under normal ***, there were high relative electrolytic leakage(REC), malondialdehyde(MDA), glutathione(GSH), and superoxide radical(O_(2)^(·-)) levels in the Csspt mutant plants, with decreased Proline content after the high-temperature treatment. Transcriptome analysis showed that the photosystem and chloroplast activities in Csspt mutant plants were extremely disrupted by the high-temperature stress compared with wildtype(WT) plants. Moreover, the plant hormone signal transduction, as well as MAPK and calcium signaling pathways were activated in Csspt mutant plants under high-temperature stress. The HSF and HSP family genes shared the same upregulated expression patterns in Csspt and WT plants under high-temperature conditions. However, most bHLH, NAC, and bZIP family genes were significantly down-regulated by heat in Csspt mutant plants. Thus, these results demonstrated that CsSPT regulated the high-temperature response by recruiting photosynthesis components, signaling pathway molecules, and transcription factors. Our results pro

关键词： Cucumber bHLH CsSPT Photosynthesis High temperature

Population genomics highlights structural variations in local adaptation to saline coastal environments in woolly grape

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Journal of Integrative plant biology 2024年第7期66卷 1408-1426页

作者： Tianhao Zhang Wenjing Peng Hua Xiao Shuo Cao Zhuyifu Chen Xiangnian Su Yuanyuan Luo Zhongjie Liu Yanling Peng Xiping Yang Guo-Feng Jiang Xiaodong Xu Zhiyao Ma Yongfeng Zhou National Key laboratory of Tropical Crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China state Key laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources Guangxi UniversityNanning 530004China Guangxi Key laboratory of Forest Ecology and Conservation Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest PlantationCollege of ForestryGuangxi UniversityNanning 530004China College of Informatics Huazhong Agricultural UniversityWuhan 430070China Guangxi Key laboratory of Sugarcane biology College of AgricultureGuangxi UniversityNanning 530004China Key laboratory of horticultural plant biology ministry of Education Huazhong Agricultural UniversityWuhan 430070China Zhengzhou fruit Research Institute Chinese Academy of Agricultural SciencesZhengzhou 450009China National Key laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 571101China

Structural variations(SVs)are a feature of plant genomes that has been largely unexplored despite their significant impact on plant phenotypic traits and local adaptation to abiotic and biotic *** this study,we employed woolly grape(Vitis retordii),a species native to the tropical and subtropical regions of East Asia with both coastal and inland habitats,as a valuable model for examining the impact of SVs on local *** assembled a haplotype-resolved chromosomal reference genome for woolly grape,and conducted population genetic analyses based on whole-genome sequencing(WGS)data from coastal and inland *** demographic analyses revealed recent bottlenecks in all populations and asymmetric gene flow from the inland to the coastal *** total,1,035 genes associated with plant adaptive regulation for salt stress,radiation,and environmental adaptation were detected underlying local selection by SVs and SNPs in the coastal population,of which 37.29% and 65.26% were detected by SVs and SNPs,*** genes such as FSD2,RGA1,and AAP8 associated with salt tolerance were found to be highly differentiated and selected during the process of local adaptation to coastal habitats in SV *** study highlights the importance of SVs in local adaptation;candidate genes related to salt stress and climatic adaptation to tropical and subtropical environments are important genomic resources for future breeding programs of grapevine and its rootstocks.

关键词： climate change grape breeding local adaptation with gene flow salt tolerance viticulture Vitis

Improved observation of colonized roots reveals the regulation of arbuscule development and senescence by drought stress in the arbuscular mycorrhizae of citrus

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horticultural plant Journal 2024年第2期10卷 425-436页

作者： Xilong Yin Wei Zhang Zengwei Feng Guangda Feng Honghui Zhu Qing Yao College of Horticulture South China Agricultural UniversityKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China)Ministry of Agriculture and Rural AffairsGuangdong Province Key Laboratory of Microbial Signals and Disease ControlGuangzhouGuangdong 510642China Key laboratory of Agricultural Microbiomics and Precision Application Ministry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationKey Laboratory of Agricultural MicrobiomicsState Key Laboratory of Applied Microbiology Southern ChinaGuangdong Microbial Culture Collection Center(GDMCC)Institute of MicrobiologyGuangdong Academy of SciencesGuangzhouGuangdong 510070China

Citrus is the typical mycorrhizal fruit tree species establishing symbiosis with arbuscular mycorrhizal (AM) fungi. However, arbuscule development and senescence in colonized citrus roots, especially in response to drought stress, remain unclear, which is mainly due to the difficulty in clearing and staining lignified roots with the conventional method. Here, we improved the observation of colonized roots of citrus plants with the sectioning method, which enabled the clear observation of AM fungal structures. Furthermore, we investigated the effects of one week of drought stress on arbuscule development and senescence with the sectioning method. Microscopy observations indicated that drought stress significantly decreased mycorrhizal colonization (F%and M%) although it did not affect plant growth performance. Fluorescence probes (WGA 488 and/or Nile red) revealed that drought stress inhibited arbuscule development by increasing the percentage of arbuscules at the early stage and decreasing the percentages of arbuscules at the midterm and mature stages. Meanwhile, drought stress accelerated arbuscule senescence, which was characterized by the increased accumulation of neutral lipids. Overall, the sectioning method developed in this study enables the in-depth investigation of arbuscule status, and drought stress can inhibit arbuscule development but accelerate arbuscule senescence in the colonized roots of citrus plants. This study paves the way to elaborately dissecting the arbuscule dynamics in the roots of fruit tree species in response to diverse abiotic stresses.

关键词： Arbuscular mycorrhizae Citrus Drought stress Arbuscule development Arbuscule senescence fruit tree species

The transcriptional control of LcIDL1–LcHSL2 complex by LcARF5 integrates auxin and ethylene signaling for litchi fruitlet abscission

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Journal of Integrative plant biology 2024年第6期66卷 1206-1226页

作者： Xingshuai Ma Zidi He Ye Yuan Zhijian Liang Hang Zhang Vilde Olsson Lalun Zhuoyi Liu Yanqing Zhang Zhiqiang Huang Yulian Huang Jianguo Li Minglei Zhao state Key laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern AgricultureKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China)Ministry of Agriculture and Rural AffairsGuangdong Litchi Engineering Research CenterCollege of HorticultureSouth China Agricultural UniversityGuangzhou 510642China Dongguan Botanical Garden Dongguan 523128China Section for Genetics and Evolutionary biology Department of BiosciencesUniversity of OsloBlindernveien 31Oslo 0316Norway College of agriculture Guangxi UniversityNanning 530004China

At the physiological level,the interplay between auxin and ethylene has long been recognized as crucial for the regulation of organ abscission in ***,the underlying molecular mechanisms remain ***,we identified transcription factors involved in indoleacetic acid(IAA)and ethylene(ET)signaling that directly regulate the expression of INFLORESCENCE DEFICIENT IN ABSCISSION(IDA)and its receptor HAESA(HAE),which are key components initiating ***,litchi IDAlike 1(LcIDL1)interacts with the receptor HAESA-like2(LcHSL2).Through in vitro and in vivo experiments,we determined that the auxin response factor LcARF5 directly binds and activates both LcIDL1 and ***,we found that the ETHYLENE INSENSITIVE 3-like transcription factor LcEIL3 directly binds and activates *** expression of IDA and HSL2 homologs was enhanced in Lc ARF5and Lc EIL3 transgenic Arabidopsis plants,but reduced in ein3 eil1 ***,the expressions of LcIDL1 and LcHSL2 were significantly decreased in Lc ARF5-and LcEIL3-silenced fruitlet abscission zones(FAZ),which correlated with a lower rate of fruitlet *** of auxin led to an increase in 1-aminocyclopropane-1-carboxylic acid(the precursor of ethylene)levels in the litchi FAZ,followed by abscission *** this process,LcRF5 and LcEIL3 were induced in the ***,our findings suggest that the molecular interactions between litchi AUXIN RESPONSE FACTOR 5(LcARF5)-LcIDL1/LcHSL2 and LcEIL3–LcIDL1 signaling modules play a role in regulating fruitlet abscission in litchi and provide a long-sought mechanistic explanation for how the interplay between auxin and ethylene is translated into the molecular events that initiate abscission.

关键词： auxin ethylene fruit abscission IDA–HAE/HSL2 litchi