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

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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Peculiarity of transcriptional and H3K27me3 dynamics during peach bud dormancy

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Horticultural Plant Journal 2024年第1期10卷 38-50页

作者： Yalin Zhao Yong Li Ke Cao Weichao Fang Changwen Chen Xinwei Wang Jinlong Wu Wenwu Guo Lirong Wang The Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(fruit tree Breeding Technology) Ministry of AgricultureZhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan 450009China Western Research institute Chinese Academy of Agricultural SciencesChangjiXinjiang 831100China College of Horticulture and forestry Science Huazhong Agricultural UniversityWuhanHubei 430070China

Bud dormancy facilitates the survival of meristems under harsh environmental *** elucidate how molecular responses to chilling accumulation controlling dormancy in peach buds,chromatin immunoprecipitation sequencing to identify the H3K27me3 modifications and RNA sequencing of two peach cultivars with pronounced differences in chilling requirement were carried out,the results showed that genes associated with abscisic acid and gibberellic acid signal pathways play key roles in dormancy *** results demonstrated that peach flower bud differentiation occurred continuously in both cultivars during chilling accumulation,which was correlated with the transcript abundance of key genes involved in phytohormone metabolism and flower bud development under adverse *** more increased strength in high chillingrequirement cultivar along with the chilling accumulation at the genome-wide *** function of the dormancy-associated MADS-box gene PpDAM6 was identified,which is involved in leaf bud break in peach and flower development in transgenic Nicotiana tabacum(NC89).In addition,PpDAM6 was positively regulated by PpCBF,and the genes of putative dormancy-related and associated with metabolic pathways were *** together,these results constituted a theoretical basis for elucidating the regulation of peach bud dormancy transition.

关键词： Peach bud Dormancy RNA-seq H3K27me3 Chilling requirement

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The first mitogenome of Lauraceae(Cinnamomum chekiangense)

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Plant Diversity 2024年第1期46卷 144-148页

作者： Changwei Bi Ning Sun Fuchuan Han Kewang Xu Yong Yang David K.Ferguson State Key Laboratory of tree Genetics and Breeding Co-Innovation Center for Sustainable Forestry in Southern ChinaKey Laboratory of Tree Genetics and Biotechnology of Educational Department of ChinaKey Laboratory of Tree Genetics and Silvicultural Sciences of Jiangsu ProvinceNanjing Forestry UniversityNanjing 210037China College of Information Science and Technology Nanjing Forestry UniversityNanjing 210037China Research institute of Subtropical forestry Chinese Academy of ForestryHangzhou 311400China Co-Innovation Center for Sustainable forestry in Southern China College of Life SciencesNanjing Forestry UniversityNanjing 210037China Department of Paleontology University of ViennaViennaAustria

There are three distinct genetic systems in higher plants,the dominant nuclear genome and the semi-autonomous organelle genomes(plastids and mitochondria).In contrast to the conserved plastid genome(plastome),the plant mitochondrial genome(mitogenome)is characterized by an intriguing“evolutionary paradox”distinguished by a remarkably low mutation rate but with a significantly high rearrangement rate(Palmer and Herbon,1988;Lai et al.,2022).

关键词： autonomous distinguished Palmer

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Identification and Transcriptional Regulation of CAMTA Genes in Liriodendron chinense

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Phyton-International Journal of Experimental Botany 2024年第3期93卷 413-425页

作者： Kaiyue Hong Yasmina Radani Teja Manda Jinhui Chen Liming Yang State Key Laboratory of tree Genetics and Breeding College of Life SciencesNanjing Forestry UniversityNanjing210037China

This study explores CAMTA genes in the rare and endangered Chinese plant species,Liriodendron *** the completion of whole-genome sequencing,the roles of CAMTA genes in calcium regulation and stress responses in this species remain largely *** the *** genome,we identiﬁed two CAMTA genes,Lchi09764 and Lchi222536,characterized by four functional domains:CG-1,TIG,ANK repeats,and IQ *** analyses,including phylogenetic investigations,cis-regulatory element analyses,and chromosomal location studies,aim to elucidate the deﬁning features of CAMTA genes in *** Weighted Gene Co-Expression Network Analysis(WGCNA),we explored the impact of CAMTA genes on different organs and their regulation under abiotic stress *** identiﬁcation of signiﬁcant gene modules and the prediction of promoter binding sites revealed co-expressed genes associated with CAMTA transcription *** summary,this study provides initial insights into CAMTA genes in ***,laying the groundwork for future research on their evolution and biological *** knowledge enhancement contributes to a better understanding of plant responses to environmental stress—an essential aspect of plant biology.

关键词： Liriodendron chinense CAMTA genes abiotic stress WGCNA different organs

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A New Micropropagation Technology of Tilia amurensis:In VitroMicropropagation of Mature Zygotic Embryos and the Establishment of a PlantRegeneration System

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 277-289页

作者： Shijie Lin Zimo Wang Hongbo Zhu Conghui Wang Hongfeng Wang Dawei Zhang Tianbing Gou Guangdao Bao Ye Luo Huaijiang He Zhonghui Zhang Jilin Provincial Academy of forestry sciences(Jilin forestry Biological Control Central Station) Changchun130033China institute of forestry Inventory and Planning of Jilin Province Changchun130022China Jilin Forest tree and Seeding Management Station Changchun130022China

Tilia amurensis is an economically valuable broadleaf tree species in Northeast *** production of *** varieties at commercial scales has been greatly limited by the low germination *** thus a pressing need to develop an organogenesis protocol for in vitro propagation of *** to alleviate ashortage of high-quality *** ***,we established a rapid in vitro propagation system *** from mature zygotic embryos and analyzed the effects of plant growth regulators and culture mediain different *** found that Woody plant medium(WPM)was the optimal primary culture medium formature zygotic *** highest callus induction percentage(68.76%)and number of axillary buds induced(3.2)were obtained in WPM+0.89μmol/L 6-benzyladenine(6-BA)+0.46μmol/L kinetin(KT)+0.25μmol/Lindole-3-butryic acid(IBA)+1.44μmol/L gibberellin A_(3)(GA_(3)).The multiple shoot bud development achievedthe highest percentage(83.32%)in the Murashige and Skoog(MS)+2.22μmol/L 6-BA+0.25μmol/L IBA+1.44μmol/L GA_(3).The rooting percentage(96.70%)was highest in 1/2 MS medium+1.48μmol/L *** percentage of transplanting plantlets was 82.22%in soil:vermiculite:perlite(5:3:1).Our study is the firstto establish an effective organogenesis protocol for *** using mature zygotic embryos.

关键词： Tilia amurensis Rupr. mature zygotic embryo micropropagation adventitious bud multiplication rooting

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Differences in leaf cuticular wax induced by whole-genome duplication in autotetraploid sour jujube

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Horticultural Plant Journal 2024年第1期10卷 66-76页

作者： Meng Li Chenxing Zhang Lu Hou Xinru Liu Hanqing Zhao Xiaoming Pang Wenhao Bo Yingyue Li National Engineering Research Center of tree Breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Key Laboratory of Genetics and Breeding in Forest trees and Ornamental Plants Ministry of EducationCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China The tree and Ornamental Plant Breeding and Biotechnology Laboratory of National forestry and Grassland Administration Beijing Forestry UniversityBeijing 100083China

Drought-resistant plants exhibit strong water retention *** this regard,the autotetraploid sour jujube leaves exhibit better water retention than diploid *** comparisons and physiological comparisons of diploid and autotetraploid leaves showed that the autotetraploid leaves had thicker leaf cuticles and more leaf wax accumulation than the diploid leaves,which could reduce cuticle permeability and improve the drought tolerance of *** this study,the cuticular wax crystalloids on the adaxial and abaxial sides of young and mature jujube leaves were observed in the two ploidy types,and unique cuticular wax crystalloids covering a large area of the cuticle on autotetraploid sour jujube leaves may provide an advantage in reducing leaf non-stomata transpiration and improving plant drought *** on the transcriptome,115 differentially expressed genes between diploids and autotetraploids were further analyzed and found to be involved in the accumulation of cuticular wax components,including terpenoids,fatty acids,and lipids,as well as ABC transporter and wax biosynthetic ***,14 genes differentially expressed between glossy autotetraploid leaves and nonglossy diploid leaves,such as LOC107414787,LOC107411574 and LOC107413721,were screened as candidate genes by qRT-PCR *** findings provided insights into how polyploidization improved drought tolerance.

关键词： Autotetraploid Jujube Drought tolerance Cuticular wax RNA-seq

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Conservation genomics provides insights into genetic resilience and adaptation of the endangered Chinese hazelnut, Corylus chinensis

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Plant Diversity 2024年第3期46卷 294-308页

作者： Zhen Yang Lisong Liang Weibo Xiang Lujun Wang Qinghua Ma Zhaoshan Wang Key Laboratory of tree Breeding and Cultivation National Forestry and Grassland AdministrationResearch Institute of ForestryChinese Academy of ForestryBeijing 100091China National Engineering Research Center of Eco-Environment Protection for Yangtze River Economic Belt China Three Gorges CorporationBeijing 100083China Rare Plants Research institute of Yangtze River China Three Gorges CorporationYichang 443133China Research institute of Economic Forest Cultivation and Processing Anhui Academy of ForestryHefei 230031China

Global climate change has increased concerns regarding biodiversity ***,many key conservation issues still required further research,including demographic history,deleterious mutation load,adaptive evolution,and putative *** we generated the first chromosome-level genome of the endangered Chinese hazelnut,Corylus chinensis,and compared the genomic signatures with its sympatric widespread ***-C yunnanensis *** found large genome rearrangements across all Corylus species and identified species-specific expanded gene families that may be involved in *** genomics revealed that both *** and the *** complex had diverged into two genetic lineages,forming a consistent pattern of southwestern-northern *** size of the narrow southwestern lineages of both species have decreased continuously since the late Miocene,whereas the widespread northern lineages have remained stable(***) or have even recovered from population bottlenecks(*** complex) during the *** with ***-C. yunnanensis complex,*** showed significantly lower genomic diversity and higher inbreeding ***,*** carried significantly fewer deleterious mutations than ***-C. yunnanensis complex,as more effective purging selection reduced the accumulation of homozygous *** also detected signals of positive selection and adaptive introgression in different lineages,which facilitated the accumulation of favorable variants and formation of local ***,both types of selection and exogenous introgression could have mitigated inbreeding and facilitated survival and persistence of ***,our study provides critical insights into lineage differentiation,local adaptation,and the potential for future recovery of endangered trees.

关键词： Conservation genomics Demographic history Inbreeding Genetic load Runs of homozygosity Local adaptation

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Molecular evolution of Toll-like receptors in rodents

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Integrative Zoology 2024年第3期19卷 371-386页

作者： Qianqian SU Yi CHEN Hongxuan HE College of forestry Central South University of Forestry and TechnologyChangshaChina National Research Center for Wildlife-Borne Diseases Institute of ZoologyChinese Academy of SciencesBeijingChina

Toll-like receptors(TLRs),the key sensor molecules in vertebrates,trigger the innate immunity and prime the adaptive immune *** TLR family of rodents,the largest order of mammals,typically contains 13 TLR ***,a clear picture of the evolution of the rodent TLR family has not yet emerged and the TLR evolutionary patterns are unclear in rodent ***,we analyzed the natural variation and the evolutionary processes acting on the TLR family in rodents at both the interspecific and population *** results showed that rodent TLRs were dominated by purifying selection,but a series of positively selected sites(PSSs)primarily located in the ligand-binding domain was also *** numbers of PSSs differed among TLRs,and nonviralsensing TLRs had more PSSs than those in viral-sensing ***-conversion events were found between TLR1 and TLR6 in most rodent *** genetic analyses showed that TLR2,TLR8,and TLR12 were under positive selection in Rattus norvegicus and ***,whereas positive selection also acted on TLR5 and TLR9 in the former species,as well as TLR1 and TLR7 in the latter ***,we found that the proportion of polymorphisms with potentially functional change was much lower in viral-sensing TLRs than in nonviral-sensing TLRs in both of these rat *** findings revealed the first thorough insight into the evolution of the rodent TLR genetic variability and provided important novel insights into the evolutionary history of TLRs over long and short timescales.

关键词： adaptive evolution gene conversion positive selection rodents Toll-like receptors

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Construction of apricot variety search engine based on deep learning

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Horticultural Plant Journal 2024年第2期10卷 387-397页

作者： Chen Chen Lin Wang Huimin Liu Jing Liu Wanyu Xu Mengzhen Huang Ningning Gou Chu Wang Haikun Bai Gengjie Jia Tana Wuyun State Key Laboratory of tree Genetics and Breeding Research Institute of Non-timber ForestryChinese Academy of ForestryZhengzhouHenan 450003China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong 518120China Kernel-Apricot Engineering and Technology Research Center of State forestry and Grassland Administration ZhengzhouHenan 450003China Key Laboratory of Non-timber Forest Germplasm Enhancement and Utilization of National forestry and Grassland Administration ZhengzhouHenan 450003China

Apricot has a long history of cultivation and has many varieties and types. The traditional variety identification methods are timeconsuming and labor-consuming, posing grand challenges to apricot resource management. Tool development in this regard will help researchers quickly identify variety information. This study photographed apricot fruits outdoors and indoors and constructed a dataset that can precisely classify the fruits using a U-net model (F-score:99%), which helps to obtain the fruit's size, shape, and color features. Meanwhile, a variety search engine was constructed, which can search and identify variety from the database according to the above features. Besides, a mobile and web application (ApricotView) was developed, and the construction mode can be also applied to other varieties of fruit ***, we have collected four difficult-to-identify seed datasets and used the VGG16 model for training, with an accuracy of 97%, which provided an important basis for ApricotView. To address the difficulties in data collection bottlenecking apricot phenomics research, we developed the first apricot database platform of its kind (ApricotDIAP, http://***/) to accumulate, manage, and publicize scientific data of apricot.

关键词： Apricot Variety Convolutional neural network Deep learning Database platform Mobile application Image retrieval

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Genomic analysis provides insights into the westward expansion of domesticated peaches in China

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Horticultural Plant Journal 2024年第2期10卷 367-375页

作者： Wenqing Li Yong Li Xinwei Wang Guoqing Zhao Gengrui Zhu Ke Cao Weichao Fang Jinlong Wu Kai Ma Changwen Chen Lirong Wang Zhengzhou fruit Research institute CAASZhengzhouHennan 450009China Xinjiang Academy of Agricultural sciences UrumqiXinjiang 830091China Western Research institute CAASChangjiXinjiang 831100China

Peach, an economically important model plant of the Rosaceae family, has been domesticated and cultivated in China for approximately5 000 years. The Hexi Corridor, an important corridor connecting east-central China and the Tarim Basin, is the starting point of the Silk Road that links China and the Eurasian region. As a globally distributed fruit tree, the spread of peach was accomplished through historical trade routes in the Hexi Corridor and the Tarim Basin. However, knowledge of peach genetic diversity in these regions remains limited. In this study,we examined the relationships and the spread history of domesticated peaches through sequencing and genomic analysis of 161 peach accessions collected from Northwest China, including 43 from the Hexi Corridor and 104 from the Tarim Basin. The results indicate that peach landraces in the Hexi Corridor and the Tarim Basin are derivatives of peaches from the east and south of China (ESC). Notably, the genetic diversity of accessions from both the Hexi Corridor and the Tarim Basin was lower than that of ESC accessions. Reduction of diversity (ROD) and linkage disequilibrium (LD) analyses detected a genetic bottleneck in peaches from these regions. Additionally, these peaches have undergone varying degrees of selection from natural environment. Moreover, genes responsive to biotic and abiotic stresses were under selection, which could be the result of the climate change of Northwest China after the Last Glacial Maximum (LGM). Our findings provide a better understanding of the genetic basis of peach migration in Northwest China. Furthermore, this study expands the available genomic data for peaches and provides critical information for future peach breeding programs.

关键词： Peach Hexi corridor Tarim Basin Genetic diversity Gene flow

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