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中国第五届植物化感作用学术研讨会

作者：马燕会甄文超 Research Center for Biocontrol Techniques against Pests on Crops of Hebei Province College of Plant Protection Agricultural University of Hebei

A total of 17 different strawberry cultivars were evaluated for their resistance to wilt disease and the mechanism on disease resistance under autotoxins-p-hydroxybenzoic acid stress were studied in a pot culture *** amino acids variation in the root exudates of different strawberry cultivars were collected analysed with high performance liquid chromatography (HPLC).The results showed that,it will exacerbate Fusarium wilt symptom when inoculated with pathogens on different strawberry cultivars during autotoxins *** the strawberry cultivars were divided into three different patterns according to their performance against Fusarium wilt,resprented separately by "Tutela"、 "Toyonoka" and "All star".The variation of amino acids detected in root exudates of different strawberry cultivars and the change of antioxidant enzymes activities during autotoxins-p-hydroxybenzoic acid stress were proved to have great relationship with the resistance *** content of proline,serine and threonine in root exudates of sensitive varieties was significantly higher than that of resistant *** change is that some amino acids which can promate spore germination of pathogen increased and some other amino acids which can restrain spore germination reduced after autotoxins-p-hydroxybenzoic acid stress.

关键词： autotoxins cultivar wilt disease Disease resistance

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Autotoxicity of Phthalate Esters in Tobacco Root Exudates:Effects on Seed Germination and Seedling Growth

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Pedosphere 2017年第6期27卷 1073-1082页

作者： DENG Jiajun ZHANG Yanling HU Jiwei JIAO Jiaguo HU Feng LI Huixin ZHANG Shixiang Soil Ecology Laboratory College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095(China) ~hengzhou Tobacco Research Institute of CNTC Zhengzhou 450001(China) Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment Guizhou Nounal UniversityGuiyang 550001(China) Testing Center of Agro-Product Quality and Safety of Jiangxi Province Nanchang 330046(China) Key Laboratory of Eco-Environmental and Tobacco Leaf Quality of CNTC Zhengzhou 450001(China)

Autotoxicity is one of the major factors that impede continuous *** is defined as the toxic influence of chemicals released from one plant species on the germination and growth of individuals of the same ***, in order to exam the autotoxicity of tobacco root exudates, root exudates were collected from tobacco plants grown both in cultural solution and on natural *** ultraperformance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry, main autotoxic chemical substances in the root exudates were *** autotoxic effects of suspected autotoxins on seed germination(including germination rate,germination potential, germination index, and vigor index) and seedling growth were *** phthalate(or diisobutyl phthalate), dioctyl phthalate, and diisooctyl phthalate were identified in tobacco root *** was observed that high concentrations(greater than 0.5 mmol L^(-1)) of each identified phthalate ester caused significant(P < 0.05) inhibition of tobacco seed germination and seedling *** can be concluded that phthalate esters such as dibutyl phthalate, diisobutyl phthalate, and diisooctyl phthalate in tobacco root exudates may play an important role in tobacco autotoxicity.

关键词： autotoxins germination index germination potential germination rate vigor index

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Advances of Allelopathic Autotoxicity in Rehmannia glutinosa L.

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Agricultural Biotechnology 2019年第3期8卷 46-50,53页

作者： Xiaoran WANG Weixi LI Zhen LI Yuhong WANG Zhongyi ZHANG Xinjian CHEN College of Life Sciences Henan Agricultural UniversityZhengzhou 450002China College of Crop Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China Key Laboratory for Genetics Breeding and Multiple Utilization of Crops Ministry of Education Fujian Agriculture and Forest UniversityFuzhou 350002China

Allelopathic autotoxicity occurs when a plant releases toxic chemical substances into the environment which inhibits development and growth of the same plant *** glutinosa L.( *** ) is one of the most common traditional Chinese medicines,whose productivity and quality,however,are seriously impacted by consecutive monoculture *** autotoxicity is one reason for consecutive monoculture *** this paper,we reviewed the categories of allelochemicals,the methods of allelochemicals identification,and the mechanisms of allelopathic autotoxicity,which provides clues for further study of the molecular mechanisms of allelopathic autotoxicity and consecutive monoculture obstacle.

关键词： Rehmannia glutinosa Allelopathic autotoxicity Consecutive monoculture obstacle autotoxins Self-DNA

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Study on Obstacles to Continuous Cropping of Vegetables and Soil Remediation Technology

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Asian Agricultural Research 2016年第2期8卷 64-65,72页

作者： Pingsheng FAN Gang CHEN Deli XU Weimin FENG Yuyu LU Anqin GUAN Vegetable Research Institute Jiangsu Academy of Agricultural Sciences Lianyungang Vegetable Gardening Station

Firstly,this paper analyzes the cause of obstacles to continuous cropping of vegetables,and then introduces the soil ecological remediation technology used for overcoming obstacles to continuous cropping of vegetables. Finally,this paper analyzes the effect of applying soil ecological remediation technology in overcoming obstacles to continuous cropping of vegetables.

关键词： Obstacles to continuous cropping of vegetables Soil ecological remediation technology autotoxins Application

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