检索结果-南通市图书馆

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 feeding.In this study,cadmium accumulation in the tissues of S.exigua exposed to cadmium and its effects on the growth and development of the parents and the offspring were investigated.Under the stress of different concentrations of cadmium(0.2,3.2,and 51.2 mg kg^(-1)),the cadmium content in each tissue of S.exigua increased in a dose-dependent manner.At 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 body.In addition,the cadmium content in ovaries was much higher than in testes.When F1S.exigua 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 F1generation.Even in the F_(2)generation of the 3.2 mg kg^(-1)treatment,the fecundity was significantly lower than in the parental generation.The 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 levels.When 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)treatments.The 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Peculiarity of transcriptional and H3K27me3 dynamics during peach bud dormancy

引用

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 conditions.To 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 regulation.The 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 conditions.The more increased strength in high chillingrequirement cultivar along with the chilling accumulation at the genome-wide level.The 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 proposed.Taken 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A method for Improving the Efficiency of Pear tree Crossbreeding

引用

Agricultural Biotechnology 2024年第2期13卷 25-26,42页

作者： Jintao XU Longfei LI Minghui JI Huan LIU Lijuan GAO Yong GUO Yingjie WANG Baofeng HAO changli institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

In view of the short blooming period of pear tree crossbreeding and the complexity of pollination process, a method that can improve the efficiency of crossbreeding of pear trees was provided. Meanwhile, this method can also be applied to the study of pollen xenia effect, pollination tree selection and pure pollen collection in pear tree cultivation.

关键词： Pear tree Cross breeding Efficiency Method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Molecular Regulatory Mechanisms of fruit trees under Low Temperature Stress

引用

Plant Diseases and Pests 2024年第3期15卷 46-48页

作者： Huan LIU Lijuan GAO Minghui JI Longfei LI Jintao XU Baofeng HAO changli institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

The most recent research findings on the tolerance of fruit trees to cold stress are reviewed from a molecular perspective,including the perception and transduction of low temperature calcium signaling,CBF-dependent molecular regulatory mechanisms,non-CBF-dependent molecular regulatory mechanisms,and so forth.The objective is to provide a reference basis for further improving the cold resistance of fruit trees and cultivating new varieties of hardy plants.

关键词： Low temperature stress fruit trees Growth and development Molecular mechanism research progress

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Light and Simplified Branch Bending Method for Young Pear trees

引用

Plant Diseases and Pests 2024年第2期15卷 19-21页

作者： Jintao XU Longfei LI Minghui JI Huan LIU Lijuan GAO Baofeng HAO changli institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

Aiming at high cost and low efficiency of conventional branch bending method in the modern intensive planting and labor-saving cultivation mode of young pear trees,this paper provides a new branch bending method with wide source of raw materials,cheap price and simple operation,which is also suitable for the management of low-age branches in the process of high grafting and upgrading of traditional big trees.

关键词： Pear tree Light and simplified Branch bending Method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

OsNPF3.1,a nitrate,abscisic acid and gibberellin transporter gene,is essential for rice tillering and nitrogen utilization efficiency

引用

Journal of Integrative Agriculture 2024年第4期23卷 1087-1104页

作者： Junnan Hang Bowen Wu Diyang Qiu Guo Yang Zhongming Fang Mingyong Zhang institute of Rice Industry Technology research/Key Laboratory of Functional Agriculture Guizhou Provincial Department of Education/Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous RegionMinistry of Education/Key Laboratory of Molecular Breeding for Grain and Oil Crops in Guizhou Province/College of Agricultural SciencesGuizhou UniversityGuiyang 550025China Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany/South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China institute of fruit tree research Guangdong Academy of Agricultural SciencesGuangzhou 510640China

Low-affinity nitrate transporter genes have been identified in subfamilies 4-8 of the rice nitrate transporter 1(NRT1)/peptide transporter family(NPF),but the OsNPF3 subfamily responsible for nitrate and phytohormone transport and rice growth and development remains unknown.In this study,we described OsNPF3.1 as an essential nitrate and phytohormone transporter gene for rice tillering and nitrogen utilization efficiency(NUtE).OsNPF3.1 possesses four major haplotypes of its promoter sequence in 517 cultivars,and its expression is positively associated with tiller number.Its expression was higher in the basal part,culm,and leaf blade than in other parts of the plant,and was strongly induced by nitrate,abscisic acid(ABA)and gibberellin 3(GA_3)in the root and shoot of rice.Electrophysiological experiments demonstrated that OsNPF3.1 is a pH-dependent low-affinity nitrate transporter,with rice protoplast uptake assays showing it to be an ABA and GA_3 transporter.OsNPF3.1 overexpression significantly promoted ABA accumulation in the roots and GA accumulation in the basal part of the plant which inhibited axillary bud outgrowth and rice tillering,especially at high nitrate concentrations.The NUtE of OsNPF3.1-overexpressing plants was enhanced under low and medium nitrate concentrations,whereas the NUtE of OsNPF3.1 clustered regularly interspaced short palindromic repeats(CRISPR)plants was increased under high nitrate concentrations.The results indicate that OsNPF3.1 transports nitrate and phytohormones in different rice tissues under different nitrate concentrations.The altered OsNPF3.1 expression improves NUtE in the OsNPF3.1-overexpressing and CRISPR lines at low and high nitrate concentrations,respectively.

关键词： rice tillering grain yield phytohormone nitrate transporter nitrogen utilization efficiency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Construction of apricot variety search engine based on deep learning

引用

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 trees.Additionally, 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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High Yield Cultivation and Pest Control Technology of Cashew

引用

Plant Diseases and Pests 2024年第3期15卷 21-22页

作者： Li ZHAO Weijian HUANG Zhongrun ZHANG Haijie HUANG Tropical Biodiversity and Bioresource Utilization Laboratory Qiongtai Normal UniversityHaikou 570100China Tropical Crops Genetic Resources institute Chinese Academy of Tropical Agricultural Sciences/National Cultivar Improvement Center of Tropical Fruit TreeHaikou 571101China

In order to enhance the yield and quality of cashew,it is essential to implement high-yield cultivation techniques effectively throughout the production process.Additionally,pest control measures should be employed to... 详细信息

关键词： Cashew High yield cultivation Pest control technology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Review of research on Nutritional Physiological Mechanism and Nutritional Diagnosis of Magnesium in fruit trees

引用

Asian Agricultural research 2022年第7期14卷 60-62页

作者： Huan LIU Jie LI Yu WANG Liying FAN Jicheng HAN changli fruit tree institute Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

Magnesium is an essential nutrient element for the growth and development of fruit trees.It not only participates in photosynthesis of plants,but also promotes physiological and biochemical reactions such as carbohydrate and protein synthesis,enzyme activation,and reactive oxygen species(ROS)metabolism.Magnesium deficiency in fruit trees will directly influence the growth and development of trees and the improvement of fruit quality.This study mainly reviews the nutritional and physiological mechanism of magnesium in plants and the nutritional diagnosis of magnesium deficiency in fruit trees,in order to provide a theoretical basis for further research on magnesium nutrition in fruit trees,and accordingly provide a certain reference for the application of magnesium fertilizer.

关键词： Magnesium element fruit tree Physiological mechanism Nutritional diagnosis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：