检索结果-南通市图书馆

Evaluation of the antioxidant activity of blueberry ethanol extracts under microwave extraction

在线全文

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2022年第4期15卷 205-213页

作者： Chenghai Liu Xinglong Zhao Zhen Wang Xianzhe Zheng Liangliang Xue Chai Liu Zhiying Chen Bingfang Zhang College of Engineering Northeast Agricultural UniversityHarbin 150030China Heilongjiang plant quarantine and plant protection station Harbin 150090China

Blueberry extract contains diversiform monomers of anthocyanins, whose antioxidant activity determines the functionality of anthocyanidins and the efficacy of extraction technology. The evaluation of the antioxidant activity of anthocyanidins of blueberry ethanol extracts (BEE) was investigated by considering the monomers' identification and thermal degradation in microwave-assisted extraction (MAE). Thirteen monomers of anthocyanins were identified from the extracts of blueberry under MAE, where the highest content was for cyanidin glycosides, and the lowest content was for the malvidin glycosides. The onset temperatures of degradation for anthocyanidins monomers in BEE were 41.07°C-48.50°C, and the glycoside contents of delphinidin, cyanidin, petunidin, peonidin, peonidin, and malvidin, in turn, decreased obviously. The degradation of anthocyanidins with extraction temperature improved, other than weakened, its antioxidant activities in BEE under MAE. The research results may provide valuable guidance for the antioxidant application of extracts from blueberries.

关键词： blueberry anthocyanins microwave-assisted extraction extracts monomer antioxidant activity

Field Control Effects of Four Biopesticides on Grape Gray Mold

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

plant Diseases and Pests 2022年第3期13卷 8-10页

作者： Rui MA Jianbin WEN Wenwu SHEN Hongyan ZHAN Jiahua XIE Mao CHENG Honghe Prefecture plant protection and quarantine station Mengzi 661100China Jianshui county plant protection and quarantine station Jianshui 654399China Jinghong City Cash Crops Workstation Jinghong 666100China

[Objectives]The paper was to search for biopesticides with good control effect on grape gray mold.[Methods]A randomized field trial was carried out to compare the control effects of 100 million CFU/g Trichoderma harzianum WDG,200 million spores/g Trichoderma WP,24% validamycin AS,0.3% matrine AS on grape gray mold.[Results]Of the 4 biopesticides,200 million spores/g Trichoderma WP had the highest control effect on grape gray mold,with the control effect of 73.38% at 7 d post the second application,significantly higher than those of 100 million CFU/g T.harzianum WG and 0.3% matrine AS;the control effect was 75.77% at 14 d post the second application,significantly higher than those of other 3 biopesticides.[Conclusions]The 200 million spores/g Trichoderma WP shows a good control effect on grape gray mold with a long-lasting control effect,so it is more is for the control of summer black grape gray mold in Jianshui county.

关键词： Grape gray mold Botrytis cinerea Biopesticide Control effect

Distinctive phosphorylation pattern during mitotic exit network(MEN)regulation is important for the development and pathogenicity of Magnaporthe oryzae

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Stress Biology 2022年第1期2卷 182-192页

作者： Wanzhen Feng Jiansheng Wang Xinyu Liu Haowen Wu Muxing Liu Haifeng Zhang Xiaobo Zheng Ping Wang Zhengguang Zhang Department of plant Pathology College of Plant ProtectionNanjing Agricultural Universityand Key Laboratory of Integrated Management of Crop Diseases and PestsMinistry of EducationNanjing 210095China The Key Laboratory of plant Immunity Nanjing Agricultural UniversityNanjing 210095China plant protection and quarantine station of Nanjing Nanjing 210095China Departments of Microbiology Immunologyand Parasitologyand PediatricsLouisiana State University Health Sciences CenterNew OrleansLouisiana 70112USA

The mitotic exit network(MEN)pathway is a vital kinase cascade regulating the timely and correct progress of cell division.In the rice blast fungus Magnaporthe oryzae,the MEN pathway,consisting of conserved protein kinases MoSep1 and MoMob1-MoDbf2,is important in the development and pathogenicity of the fungus.We found that deletion of MoSEP1 affects the phosphorylation of MoMob1,but not MoDbf2,in contrast to what was found in the buddy yeast Saccharomyces cerevisiae,and verified this finding by in vitro phosphorylation assay and mass spectrom-etry(MS)analysis.We also found that S43 residue is the critical phosphor-site of MoMob1 by MoSep1,and proved that MoSep1-dependent MoMob1 phosphorylation is essential for cell division during the development of M.oryzae.We further provided evidence demonstrating that MoSep1 phosphorylates MoMob1 to maintain the cell cycle during vegetative growth and infection.Taken together,our results revealed that the MEN pathway has both distinct and conservative functions in regulating the cell cycle during the development and pathogenesis of M.oryzae.

关键词： Mitotic exit network(MEN) Phosphorylation Pathogenicity Rice blast

Shoot rot of Zizania latifolia and the first record of its pathogen Pantoea ananatis in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第4期23卷 328-338页

作者： Zilan XIAO Jianping DENG Xiaojun ZHOU Liyan ZHU Xiaochan HE Jingwu ZHENG Deping GUO Jingze ZHANG Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China plant protection and plant Inspection station of Jinyun county Jinyun 321401China Jinhua Academy of Agricultural Sciences Jinhua 321017China Department of Horticulture College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058China

The aquatic grass Zizania latifolia grows symbiotically with the fungus Ustilago esculenta producing swollen structures called Jiaobai,widely cultivated in China.A new disease of Z.latifolia was found in Zhejiang Province,China.Initial lesions appeared on the leaf sheaths or sometimes on the leaves near the leaf sheaths.The lesions extended along the axis of the leaf shoots and formed long brown to dark brown streaks from the leaf sheath to the leaf,causing sheath rot and death of entire leaves on young plants.The pathogen was isolated and identified as the bacterium Pantoea ananatis,based on 16 S ribosomal RNA(r RNA)gene sequencing,multilocus sequence analysis(atp D(β-subunit of ATP synthase F1),gyr B(DNA gyrase subunit B),inf B(translation initiation factor 2),and rpo B(β-subunit of RNA polymerase)genes),and pathogenicity tests.Ultrastructural observations using scanning electron microscopy revealed that the bacterial cells colonized the vascular tissues in leaf sheaths,forming biofilms on the inner surface of vessel walls,and extended between vessel elements via the perforated plates.To achieve efficient detection and diagnosis of P.ananatis,species-specific primer pairs were designed and validated by testing closely related and unrelated species and diseased tissues of Z.latifolia.This is the first report of bacterial sheath rot disease of Z.latifolia caused by P.ananatis in China.

关键词： Zizania latifolia Phylogeny Pantoea ananatis Multilocus analysis Scanning electron microscopy Species-specific primers

Association of host plant growth and weed occurrence with armyworm(Mythimna separata) damage in corn fields

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2018年第7期17卷 1538-1544页

作者： ZHANG Kun-peng YU Zhi-hao JIANG Shi-xiong SUN De-wen HUI Jun-tao ZHENG Yu-liang LI Xiao-zhen WANG Xing-yun WU Jun-xiang State Key Laboratory of Crop Stress Biology in Arid Areas/College of plant protection Northwest A&F UniversityYangling 712100P.R.China Anyang Institute of Technology Anyang 455000P.R.China plant protection and quarantine station of Sanyuan county Sanyuan 713800P.R.China plant protection and quarantine station of Lantian county Lantian 710500P.R.China plant protection and quarantine station of Chang'an District Chang'an 710100P.R.China Zhengping plant protection Technology Limited Company Xi'an 710000P.R.China

To clarify association between armyworm（Mythimna separata） damage level and the corn growth and weed occurrence, we investigated corn plant height, stem diameter and vigor as well as weed coverage and biomass. The investigations were conducted at three locations of Shaanxi Province, China which were suffered seriously from armyworm. Significant correlations were found between the parameters analyzed. At stunted corn growth and presence of plenty of weeds, the armyworm damage tended to be heavy; oppositely, when corn grew well and weed density were low, armyworm harm was the minimal. Therefore, corn growing status and weed density can significantly affect armyworm damage level. Our results imply that promoting corn growth and timely removal of weeds are conducive to reducing armyworm occurrence.

关键词： Mythimna separata damage degree corn growth corn field weeds

Resistance analysis of the rice variety Huaidao 5 against root-knot nematode Meloidogyne graminicola

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2023年第10期22卷 3081-3089页

作者： FENG Hui ZHOU Can-rong ZHU Feng LE Xiu-hu JING De-dao Paul DALY ZHOU Dong-mei WEI Li-hui Institute of plant protection Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China plant protection and quarantine station of Jiangsu Province Nanjing 210009P.R.China School of Landscape and Ecological Engineering Hebei University of EngineeringHandan 056038P.R.China Zhenjiang Institute of Agricultural Science in Hilly Area of Jiangsu Province Jurong 212400P.R.China

Meloidogyne graminicola has emerged as one of the most destructive plant-parasitic nematodes affecting rice(Oryza sativa)production worldwide.Resistance to M.graminicola in rice could be the most effective option for its management.However,sources of germplasm with resistance to M.graminicola in rice remain limited.Here,we describe the root attraction,gall formation and genetic analysis of the resistance to M.graminicola in the rice variety Huidao 5.A nematode attraction assay showed that second-stage juveniles(J2s)of M.graminicola were attracted at the root tip of Huaidao 5 within 8 h without a significant reduction in attraction compared to the susceptible rice variety Nanjing 9108.Microscopic observation of the infection revealed that the J2s invaded root tissues 12 h after inoculation,but their subsequent movement to the root tip was hindered in Huaidao 5,resulting in decreased nematode number compared to Nanjing 9108.Additionally,we used the soil and hydroponic culture systems to simulate upland and flooding conditions in the paddy fields respectively,and found that gall number was significantly reduced,and nematode development was clearly suppressed in Huaidao 5.To investigate the genetic basis of this resistance,cross breeding was performed between the Huaidao 5 and Nanjing 9108 varieties.There was no reduction in the resistance of the F_(1) offspring to M.graminicola in the greenhouse or field trials,suggesting that a dominant gene could control resistance in Huaidao 5.In summary,this study provides a detailed characterization of a novel source of resistance to M.graminicola in rice,which is of great potential for use in crop breeding.

关键词： root-knot nematode Meloidogyne graminicola rice resistance

Strategic Thinking and Measures for plant quarantine and Food Safety

在线全文

学校读者我要写书评

暂无评论

Asian Agricultural Research 2013年第8期5卷 83-85页

作者： Guibin WANG Jinghan YANG Yongmei LI Daiju CUN Rui MA Guiping FAN plant protection and quarantine station of Chuxiong Yi Autonomous Prefecture Kunming No.10 Middle School plant protection and quarantine station of Yunnan Province plant protection and quarantine station of Tengchong county plant protection and quarantine station of Honghe Hani and Yi Autonomous Prefecture plant protection and quarantine station of eshan county

This paper describes the importance of plant quarantine to the food safety in China through cases where plant quarantine helps to effectively intercept harmful organisms for food safety and promote export and import t... 详细信息

关键词： plant quarantine Food safety Thinking Measures

Population Dynamics and Control of Chionaspis subcorticalis Green

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

plant Diseases and Pests 2012年第1期3卷 30-32页

作者： LI Yong-mei LUO Rong ZHAN Qing-quan FAN Gui-ping Yunnan plant protection and quarantine station Kunming 650034China Yuxi plant protection and quarantine station Yuxi 653100China eshan plant protection and quarantine station Eshan 653200China

A Preliminary Study on Application Effect of Intelligent Insect Sexual Attraction Monitoring System

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

plant Diseases and Pests(植物病虫害研究：英文版) 2022年第2期13卷 14-16页

作者： Weibiao ZHANG Xueli LIU Shuyin LIU plant protection and Inspection station of Fugou county Fugou 461300China

[Objectives]The paper was to verify and explore the application effect of intelligent insect sexual attraction monitoring system.[Methods]The data of Helicoverpa armigera and Spodoptera frugiperda monitored by intelligent insect sexual attraction monitoring system,manual survey and traditional pest monitoring tool were compared and analyzed,and the application effect of guiding field pest control was investigated.[Results]The statistical data of intelligent insect sexual attraction monitoring system were highly consistent with that of manual survey,and were consistent with that of traditional pest monitoring tool,which had good effect in guiding field control.[Conclusions]The monitoring data of intelligent insect sexual attraction monitoring system are accurate,efficient,real-time and practical.It can solve the problem of high monitoring intensity for the monitoring personnel and conform to the development direction of modern agriculture.

关键词： Intelligent insect sexual attraction monitoring system Helicoverpa armigera Spodoptera frugiperda Application effect