團隊介紹—非在校生

研究室成員Lab. Member
碩士生Master student
照片Photo 姓名Name 資訊Details
111級
鄭靜如 Jing-Ru Zheng (Graduation)
  • 電子郵件 E-mail

    rurufatmomo@gmail.com
  • 研究主題 Research

    以非熱電漿活化水防治番石榴瘡痂病之效果評估
Evaluation of antibacterial effect of non-thermal plasma activated water on guava scab
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (111級)
    M.S. degree (2023), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (107級)
    B.S. degree (2019), Department of Plant Medicine National Pingtung University of Science and Technology
張家丞 Jia-Cheng Jang (Graduation)
  • 電子郵件 E-mail

    taiwantaiwan26@gmail.com
  • 研究主題 Research

    開發香蕉黃葉病菌熱帶第四型生理小種之水解探針檢測技術
Development of a TaqMan Probe-based detection technique for Fusarium oxysporum f. sp. cubense tropical race 4
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (111級)
    M.S. degree (2023), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (107級)
    B.S. degree (2019), Department of Plant Medicine National Pingtung University of Science and Technology
蔡淳畇 Chun-Yun Cai (Graduation)
  • 電子郵件 E-mail

    lisaqazxc090903261206@gmail.com
  • 研究主題 Research

    以聚合酶鏈鎖反應技術評估甜瓜萎凋病菌帶菌種子之生物防治效果
Evaluation effect of biological control on Fusarium oxysporum f. sp. melonis-infected seeds monitored by PCR
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (111級)
    M.S. degree (2023), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (107級)
    B.S. degree (2019), Department of Plant Medicine National Pingtung University of Science and Technology
黃家姍 Jia-shan Huang (Graduation)
  • 電子郵件 E-mail

    dragon951188@gmail.com
  • 研究主題 Research

    木瓜疫病田間分子檢測技術平台開發
Development of molecular detection platform for papaya Pytophthora palmivora in field
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (111級)
    M.S. degree (2023), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (107級)
    B.S. degree (2019), Department of Plant Medicine National Pingtung University of Science and Technology
110級
汪倖如 Xing-Ru Wang (Graduation)
  • 電子郵件 E-mail

    ella40332@gmail.com
  • 研究主題 Research

    建立大豆紅冠腐病帶菌植株與土壤之分子檢測流程
Development of molecular detection protocols for soybean plant and soil infected by Calonectia ilicicola
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (110級)
    M.S. degree (2022), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (106級)
    B.S. degree (2018), Department of Plant Medicine National Pingtung University of Science and Technology
施秉澤 Ping-Tse Shih (Graduation)
  • 電子郵件 E-mail

    b10627024@gmail.com
  • 研究主題 Research

    茶葉枯病之病徵表徵、病原菌鑑定及高通量分析
Symptom characterization, pathogen identification and high-throughput sequencing analysis of leaf blight disease on tea
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (110級)
    M.S. degree (2022), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (106級)
    B.S. degree (2018), Department of Plant Medicine National Pingtung University of Science and Technology
109級
王郁雰 Yu-Fen Wang(Graduation)
  • 電子郵件 E-mail

    b10527027wang@gmail.com
  • 研究主題 Research

    應用水稻紋枯病菌分子檢測技術檢測田間罹病水稻與帶菌水樣
Application of PCR-based methods for detecting Rhizoctonia solani AG1-infected rice plants and water
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (109級)
    M.S. degree (2021), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (105級)
    B.S. degree (2017), Department of Plant Medicine National Pingtung University of Science and Technology
楊子葳 Zi-Wei Yang(Graduation)
  • 電子郵件 E-mail

    b10527012@gmail.com
  • 研究主題 Research

    開發草莓萎凋病菌帶菌土壤之快速檢測技術
Development of rapid detection methods for soil infected by Fusarium oxysporum f. sp. fragariae
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (109級)
    M.S. degree (2021), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (105級)
    B.S. degree (2017), Department of Plant Medicine National Pingtung University of Science and Technology
108級
許雅真 Ya-Zhen Xu (Graduation)
  • 電子郵件 E-mail

    b10427034@gmail.com
  • 研究主題 Research

    以非熱電漿活化水防治草莓灰黴病之效果評估
Evaluation of antibacterial effect of non-thermal plasma activated water on strawberry gray mold
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (108級)
    M.S. degree (2020), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (104級)
    B.S. degree (2016), Department of Plant Medicine National Pingtung University of Science and Technology
余思穎 Si-Ying Yu (Graduation)
  • 電子郵件 E-mail

    cces50432@gmail.com
  • 研究主題 Research

    茶赤葉枯病菌之鑑定及開發分子檢測技術
Identification and molecular detection of Colletotrichum fructicola on tea
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (108級)
    M.S. degree (2020), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (104級)
    B.S. degree (2016), Department of Plant Medicine National Pingtung University of Science and Technology
107級
商昊德 Hao-Te Shang (Graduation)
  • 電子郵件 E-mail

    b10127029@gmail.com
  • 研究主題 Research

    香蕉黃葉病菌分子檢測技術之應用
Application of molecular techniques in Fusarium oxysporum f. sp. cubense
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (107級)
    M.S. degree (2019), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (103級)
    B.S. degree (2015), Department of Plant Medicine, National Pingtung University of Science and Technology
黃承洧 Cheng-Wei Huang (Graduation)
  • 電子郵件 E-mail

    b10327016@gmail.com
  • 研究主題 Research

    以銅基板對芒果炭疽病菌孢子發芽之影響
Effect of copper substrate on spore germination of Colletotrichum gloeosporioides of mango
*國立屏東科技大學 材料工程學系 林鉉凱 教授 (共同指導)
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (107級)
    M.S. degree (2019), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (103級)
    B.S. degree, Department of Plant Medicine National Pingtung University of Science and Technology
106級
黃濬佑 Chin-Yo Huang (Graduation)
  • 電子郵件 E-mail

    livereason1995@gmail.com
  • 研究主題 Research

    以非熱電漿活化水防治芒果炭疽病之效果評估
Evaluation of antibacterial effect of non-thermal plasma activated water on mango anthracnose
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (106級)
    M.S. degree (2018), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (102級)
    B.S. degree (2014), Department of Plant Medicine, National Pingtung University of Science and Technology
温辰杰 Chen-Jie Wen (Graduation)
  • 電子郵件 E-mail

    B10227030@gmail.com
  • 研究主題 Research

    以非農藥防治資材防治水稻紋枯病及胡瓜露菌病
Using non-pesticide materials to control rice sheath blight and cucumber downy mildew
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (106級)
    M.S. degree (2018), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (102級)
    B.S. degree (2014), Department of Plant Medicine, National Pingtung University of Science and Technology
黃湘珊 Siang-Shan Huang (Graduation)
  • 電子郵件 E-mail

    ajlkdpfsqo@yahoo.com.tw
  • 研究主題 Research

    台灣番石榴瘡痂病菌新紀錄及其生物防治技術開發
New record of guava scab in Taiwan and development of its biological control technology
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (106級)
    M.S. degree (2018), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (102級)
    B.S. degree (2014), Department of Plant Medicine, National Pingtung University of Science and Technology
昌柔妤 Rou-Yu Chang (Incompletion)
  • 電子郵件 E-mail

    b10227008@gmail.com
  • 研究主題 Research

    開發帶菌種子之萃取系統
Development of DNA extraction systems in infected seeds
  • 學歷 Education

    國立屏東科技大學 植物醫學系 學士 (102級)
    B.S. degree (2014), Department of Plant Medicine, National Pingtung University of Science and Technology
105級
張再得 Tsai-De Chang (Graduation)
  • 電子郵件 E-mail

    b10127038@gmail.com
  • 研究主題 Research

    甜瓜萎凋病菌核酸萃取與分子檢測技術開發
Development of DNA extraction and molecular techniques for Fusarium oxysporum f. sp. melonis
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (105級)
    M.S. degree (2017), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (101級)
    B.S. degree (2013), Department of Plant Medicine, National Pingtung University of Science and Technology
謝維澤 Wei-Tse Hsieh (Incompletion)
  • 電子郵件 E-mail

    weitse0106@outlook.com
  • 研究主題 Research

    篩選拮抗微生物與精油用以防治草莓灰黴病
Screening of biocontrol agents for Fusarium wilt of banana
  • 學歷 Education

    國立屏東科技大學 植物醫學系 學士 (101級)
    B.S. degree (2013), Department of Plant Medicine, National Pingtung University of Science and Technology
104級
沈世茂 Shih-Mao Shen (Graduation)
  • 電子郵件 E-mail

    kingjames309@gmail.com
  • 研究主題 Research

    水稻紋枯病菌核酸萃取與分子檢測技術開發
Development of DNA extraction and molecular techniques for Rhizoctonia solani
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (104級)
    M.S. degree (2016), Department of Plant Medicine, National Pingtung University of Science and Technology
    大葉大學 生物資源學系 學士 (100級)
    B.S. degree (2012), Department of Bioresources, Da-Yeh University
103級
林依佳 Yi-Jia Lin (Graduation)
  • 電子郵件 E-mail

    pipig321@outlook.com
  • 研究主題 Research

    拉曼光譜用以檢測香蕉黃葉病
Raman spectroscopic fingerprints for the detection of Fusarium wilt of banana
  • 學歷 Education

    國立屏東科技大學 植物醫學系 碩士 (103級)
    M.S. degree (2015), Department of Plant Medicine, National Pingtung University of Science and Technology
    國立屏東科技大學 植物醫學系 學士 (99級)
    B.S. degree (2011), Department of Plant Medicine, National Pingtung University of Science and Technology
陳翰 Han Chen (Incompletion)
  • 電子郵件 E-mail

    jak810501@gmail.com
  • 研究主題 Research

    待決定To be determined
  • 學歷 Education

    國立屏東科技大學 植物醫學系 學士 (99級)
    B.S. degree (2011), Department of Plant Medicine, National Pingtung University of Science and Technology
102級
許榮辰 Jung-Chen Hsu (Incompletion) Screening of biocontrol agents for Fusarium wilt of banana
  • 學歷 Education

    國立屏東科技大學 植物醫學系 學士 (98級)
    B.S. degree (2010), Department of Plant Medicine, National Pingtung University of Science and Technology
學士班
照片Photo 姓名Name 資訊Details
109級
謝佩璇 Pei-Syuan Sie (Graduation)
  • 研究主題 Research


改良香蕉黃葉病菌熱帶第四型生理小種之聚合酶連鎖反應專一性檢測技術
Improved polymerase chain reaction specific detection technology for Fusarium oxysporum f. sp. cubense tropical race 4
易昀臻 Yun-Zhen Yi (Graduation)
  • 研究主題 Research


建立草莓萎凋病菌之接種方法及分子檢測方法
Development of inoculation methods and molecular techniques for Fusarium oxysporum f. sp. fragariae on strawberry
蔡詔仁 Chao-Jen Tsai (Graduation)
  • 研究主題 Research


待決定
To be determined
楊承樺 Cheng-Hua Yang (Graduation)
  • 研究主題 Research


以快速核酸萃取法建立水稻紋枯病菌帶菌土壤之分子檢測流程
Development of rapid molecular protocols for soil infected by Rhizoctonia solani on rice
108級
陳蓁筠 Zhen-Yun Chen (Graduation)
  • 研究主題 Research


建立水稻稻熱病菌帶菌水稻葉片之快速分子檢測系統
Development of rapid molecular detection assays of leaf blast on rice
林庭妤 Ting-Yu Lin (Graduation)
  • 研究主題 Research


建立番茄萎凋病菌之快速檢測系統
Construction of rapid detection assays of Fusarium oxysporum f. sp. lycopersici
陳民洋 Min-Yang Chen (Graduation)
  • 研究主題 Research


雷射去濕法誘導金屬奈米顆粒及其對番石榴瘡痂病菌之抗菌效果研究
Fabrication of metal nanoparticles induced by pulsed-laser dewetting process and its antifungal effects on Neopestalotiopsis psidii
楊淳閔 Chun-Min Yang (Graduation)
  • 研究主題 Research


非熱電漿活化水搭配農用化學藥劑對茶赤葉枯病之防治應用
Application of non-thermal plasma activated water combined with pesticide for control of tea brown blight
蔡弘暘 Hung-Yang Tsai (Graduation)
  • 研究主題 Research


以自動核酸萃取技術搭配聚合酶連鎖反應法建立香蕉黃葉病之快速診斷技術
Establishment of a rapid diagnosis assay of banana Fusarium wilt by using a PCR-based molecular detection method combined with an automatic DNA extraction protocol
朱育昇 Yu-Sheng Zhu (Graduation)
  • 研究主題 Research


利用鏈黴菌與芽孢桿菌進行番茄萎凋病菌之生物防治
Biological control of Fusarium oxysporum f. sp. lycopersici by Streptomyces spp. and Bacillus spp.
107級
張家丞 Jia-Cheng Jang (Graduation)
  • 研究主題 Research


香蕉黃葉病菌第四型生理小種之檢測與鑑定
Molecular detection and identification of Fusarium oxysporum f. sp. cubense race 4
鄭靜如 Jing-Ru Zheng (Graduation)
  • 研究主題 Research


以非熱電漿活化水防治番石榴瘡痂病之效果評估
Evaluation of antibacterial effect of non-thermal plasma activated water on guava scab
蔡淳畇 Chun-Yun Cai (Graduation)
  • 研究主題 Research


以聚合酶鏈鎖反應技術評估甜瓜萎凋病菌帶菌種子之生物防治效果
Evaluation effect of biological control on Fusarium oxysporum f. sp. melonis-infected seeds monitored by PCR
黃家姍 Jia-shan Huang (Graduation)
  • 研究主題 Research


木瓜疫病田間分子檢測技術平台開發
Development of molecular detection platform for papaya Pytophthora palmivora in field
黃子芸 Zi-Yun Huang (Graduation)
  • 研究主題 Research


茶赤葉枯病菌Colletotrichum karstii之形態鑑定與親緣樹分析
Morphological identification and molecular phylogeny analysis of Colletotrichum karstii on tea
106級
施秉澤 Ping-Tse Shih (Graduation)
  • 研究主題 Research


Macrophomina phaseolina造成台灣大豆炭腐病菌的首次發現報告
First report of charcoal rot on soybean caused byMacrophomina phaseolina in Taiwan
汪倖如 Xing-Ru Wang (Graduation)
  • 研究主題 Research


建立大豆紅冠腐之分子檢測技術
Development of molecular detection for red crown rot of soybean
許睿澤 Ruei-Tze Shiu (Incompletion)
  • 研究主題 Research


使用GMRS3/ITS1引子對搭配自動萃取系統檢測水稻紋枯病菌之效果評估
Using GMRS3/ITS1 primer sets with automatic extraction system to detect rice sheath blight
林以蓁 Yi-Zeng Lin (Graduation)
  • 研究主題 Research


樹葡萄之Neopestalotiopsis屬病原鑑定及分子檢測
Molecular identification and detection of Neopestalotiopsis spp. on Jabuticaba
陳俞臻 Yu-Zhen Chen (Graduation)
  • 研究主題 Research


開發台灣草莓灰黴病菌之分子檢測技術
Development of molecular detection for gray mold of strawberry
105級
廖郁嵐 Yu-Lan Liao (Graduation)
  • 研究主題 Research


茶赤葉枯病菌之抗藥性研究
Study of drug resistance for Colletotrichum camelliae and Colletotrichum fricticola
許博睿 Po-Jui Hsu (Graduation)
  • 研究主題 Research


西瓜蔓割病菌帶菌種子之分子技術開發
Development of molecular techniques for Fusarium oxysporum f. sp. niveum in infected seeds of watermelon
楊子葳 Zi-Wei Yang (Graduation)
  • 研究主題 Research


開發草莓萎凋病菌之分子檢測技術
Development of molecular techniques for Fusarium oxysporum f. sp. fragariae
王郁雰 Yu-Fen Wang (Graduation)
  • 研究主題 Research


開發水稻紋枯病菌田間檢測系統
Development of detection systems for Rhizoctonia solani in field
104級
葉政豪 Cheng-Hao Yeh (Graduation)
  • 研究主題 Research


拮抗鏈黴菌防治草莓灰黴病菌之效果評估
Evaluation of effect of antagonistic Streptomyces against Botrytis cinerea on strawberry
林芷菁 Chih-Ching Lin (Graduation)
  • 研究主題 Research


植物萃取液作為水稻紋枯病菌非農藥防治資材之可行性評估
Potential evaluation of plant extracts as non-pesticide materials for Rhizoctonia solani
余思穎 Si-Ying Yu (Graduation)
  • 研究主題 Research


>台灣茶赤葉枯病菌形態鑑定與親緣樹分析
The molecular identification and phylogenetic analysis of Colletotrichum camelliae and Colletotrichum fricticola
許雅真 Ya-Zhen Xu (Graduation)
  • 研究主題 Research


非熱電漿活化水對種傳病原之抑菌效果評估及對種子發芽之影響
Evaluation of inhibition on seed-borne pathogens and affect at seed germination by atmospheric-pressure corona plasma water
劉軒豪 Hsien-Hao Liu (Graduation)
  • 研究主題 Research


大豆紅冠腐病菌生物學特性分析
Biological characterization of Calonectria ilicicola
王俊智 Jyun-Jhih Wang (Graduation)
  • 研究主題 Research


不同尺度銀顆粒試片對檬果炭疽病菌之影響初探
Effect of the different silver particle sizes against the mango anthracnose pathogen, Colletotrichum gloeosporioides
*國立屏東科技大學 材料工程學系 林鉉凱 教授 (共同指導)
103級
賓慈筠 Tsz-Yun Bin (Incompletion)
  • 研究主題 Research


快速核酸萃取流程建立甜瓜萎凋病
Development of DNA rapid extraction procedure for Fusarium oxysporum f. sp. melonis
黃麗年 Li-Nien Huang (Graduation)
  • 研究主題 Research


以隔絕式恆溫聚合酶連鎖反應檢測香蕉黃葉病菌
Development of insulated isothermal polymerase chain reaction (iiPCR) assays for detection of Fusarium oxysporum f. sp. cubense
鍾宛霖 Wan-Lin Chung (Graduation)
  • 研究主題 Research


屏東地區香蕉葉部病害之病原生態及防治
Pathogenic ecology and control of banana leaf disease in Pingtung
吳佩芬 Pei-Fen Wu (Graduation)
  • 研究主題 Research


蟲生真菌防治小菜蛾之效果評估
Evaluation of the effect of entomogenous fungi on Plutella xylostella
黃泳鋐 Yong-Hong Huang (Graduation)
  • 研究主題 Research


水稻紋枯病菌之生物防治技術初探
Preliminary study on biological control technology of Rhizoctonia solani
黃承洧 Cheng-Wei Huang (Graduation)
  • 研究主題 Research


CF快速萃取流程建立
Development of CF DNA rapid extraction procedure
商昊德 Hao-Te Shang (Graduation)
  • 研究主題 Research


高屏地區香蕉黃葉病菌發生調查
Investigation on the occurrence of Panama disease in kaohsiung and Pingtung
詹前揚 Chien-Yang Chan (Graduation)
  • 研究主題 Research


篩選抑制植物病原真菌之拮抗微生物
Screening of antagonistic microorganisms for inhibition plant pathogenic fungi
102級
黃濬佑 Chin-Yo Huang (Graduation)
  • 研究主題 Research


核酸快速萃取技術應用於西瓜蔓割病
Application of rapid DNA extraction techniques for Fusarium wilt of watermelon
黃湘珊 Siang-Shan Huang (Graduation)
  • 研究主題 Research


核酸快速萃取技術應用於香蕉黃葉病
Application of rapid DNA extraction techniques for Fusarium wilt of banana
楊峻毓 Jun-Yu Yang (Graduation)
  • 研究主題 Research


台灣香蕉黃葉病菌第四型生理小種分子診斷平台
Molecular diagnostic platform for Fusarium oxysporum f. sp. cubense race 4
昌柔妤 Rou-Yu Chang (Graduation)
  • 研究主題 Research


多種作物DNA快速萃取技術之開發
Development of DNA rapid extraction technology for crops
許淳堯 Chun-Yao Xu (Graduation)
  • 研究主題 Research


初步評估以八種快萃液用於萃取甜瓜種子核酸之可行性
Feasibility evalution of using eight DNA rapid extracts for extracting nucleic acid in melon seeds
沈子謙 Chun-Yao Xu (Graduation)
  • 研究主題 Research


不同銀銅比例蒸鍍薄膜對Colletotrichum glosporoides 檬果炭疽病原菌之抗菌影響
Evalution of the effect of antibacterial film design for Colletotrichum gloeosporioides in mango
温辰杰 Chen-Jie Wen (Graduation)
  • 研究主題 Research


台灣炭疽病菌分子檢測技術建立
Development of molecular techniques for Colletotrichum spp. in Taiwan
101級
洪立苓 Li-Ling Hong (Graduation)
  • 研究主題 Research


尖鐮孢菌引子對設計及專一性評估
Evalution of designed specific primers for Fusarium oxysporum
張再得 Tsai-De Chang (Graduation)
  • 研究主題 Research


甜瓜萎凋病菌引子對設計及專一性評估
Evalution of designed specific primers for Fusarium oxysporum f. sp. melonis
謝維澤 Wei-Tse Hsieh (Graduation)
  • 研究主題 Research


香蕉黃葉病菌之生物防治初探
A preliminary study on biological control of Fusarium wilt of banana
邱宥瑄 Yu-Shiuan Chou (Incompletion)
  • 研究主題 Research


待決定 To be determined
陳吟佳 Yin-Jia Chen (Graduation)
  • 研究主題 Research

    西瓜蔓割病菌分子檢測技術開發

Development of molecular techniques for Fusarium oxysporum f. sp. niveum
陳子猷 Tzu-Yu Chen (Graduation)
  • 研究主題 Research


拮抗微生物之分離及篩選
Isolation and screening of antagonistic microorganisms