In Vitro Quantum Dot LED to Inhibit the Growth of Major Pathogenic Fungi and Bacteria in Lettuce

Quantum Dot LED를 이용한 상추 주요 병원성 곰팡이 및 세균의 생장억제효과 기내실험

Lee, Hyun-Goo;Kim, Sang-Woo;Adhikari, Mahesh;Gurung, Sun Kumar;Bazie, Setu;Kosol, San;Gwon, Byeong-Heon;Ju, Han-Jun;Ko, Young-Wook;Kim, Yong-Duk;Yoo, Yong-Whan;Park, Tae-Hee;Shin, Jung-Chul;Kim, Min-Ha;Lee, Youn Su
이현구;김상우;마헤시 아드히카리;순 쿠말 구룽;세투 바지에;산 꼬설;권병헌;주한준;고영욱;김용득;유용환;박태희;신정철;김민하;이윤수

  • Received : 2019.06.15
  • Accepted : 2019.07.05
  • Published : 2019.09.30


QD LED has an ideal light source for growing crops and can also be used to control plant pathogenic microorganisms. The mycelial growth inhibition effect of QD LED light on Rhizoctonia solani, Phytophthora drechsleri, Sclerotinia sclerotiorum, Sclerotinia minor, Botrytis cinerea, Fusarium oxysporum, Pectobacterium carotovorum, and Xanthomonas campestris were investigated. According to the results, BLUE (450 nm) light, suppressed S. sclerotiorum by 16.7% at 50 cm height from the light source, and 94.1% mycelial growth at 30 cm height. Mycelial growth of Sclerotinia minor was inhibited by 80.4% at 50 cm height and 36.3% at 50 cm height in B. cinerea. S. minor, and B. cinerea was inhibited by 100% mycelial growth at a height of 30 cm from the light source. At 15 cm height, all three pathogens (B. cinerea, S. minor, and S. sclerotiorum) was inhibited by 100%. QD RED (M1) and QD RED (M2) light suppressed mycelial growth of S. minor and B. cinerea by 100% at 30 cm and 15 cm height from the light source. For S. sclerotiorum, QD RED (M1) and QD RED (M2) showed 75.2% and 100% inhibition, respectively. Further experiment was conducted to know the suppression effect of lights after inoculating the fungal pathogens on lettuce crop. According to the results, QD RED (M2) suppressed the S. sclerotiorum by 59.9%. In addition, Blue (450 nm), QD RED (M1), and QD RED (M2) light reduce the infestation by 59.9%. In case of B. cinerea, disease reduction was found 84% by BLUE (450 nm) light. Results suggest that the growth inhibition of mycelium increases by Quantum dot LED light.


Inhibition;Plant pathogens;Quantum dot LED;Suppression


Supported by : Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET)