Res. Plant Dis > Volume 25(3); 2019 > Article
Research in Plant Disease 2019;25(3):114-123.
DOI: https://doi.org/10.5423/RPD.2019.25.3.114    Published online September 30, 2019.
Quantum Dot LED를 이용한 상추 주요 병원성 곰팡이 및 세균의 생장억제효과 기내실험
이현구1 · 김상우1 · 마헤시 아드히카리1 · 순 쿠말 구룽1 · 세투 바지에1 · 산 꼬설1 · 권병헌1 · 주한준1 · 고영욱2 · 김용득2 · 유용환2 · 박태희2 · 신정철2 · 김민하2 · 이윤수1*
1강원대학교 식물자원응용과학과
2(재)철원플라즈마산업기술연구원
 
In Vitro Quantum Dot LED to Inhibit the Growth of Major Pathogenic Fungi and Bacteria in Lettuce
Hyun-Goo Lee1, Sang-Woo Kim1, Mahesh Adhikari1, Sun Kumar Gurung1, Setu Bazie1, San Kosol1, Byeong-Heon Gwon1, Han-Jun Ju1, Young-Wook Ko2, Yong-Duk Kim2, Yong-Whan Yoo2, Tae-Hee Park2, Jung-Chul Shin2, Min-Ha Kim2, Youn Su Lee1
1Department of Applied Plant Sciences, Kangwon National University, Chuncheon 24341, Korea
2Cheorwon Plasma Research Institute, Cheorwon 24047, Korea
Correspondence:  Youn Su Lee,Tel: +82-33-250-6417
Fax: +82-33-243-3314
E-mail: younslee@kangwon.ac.kr
Received: June 15, 2019   Revised: July 04, 2019   Accepted: July 05, 2019
Abstract
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.
Key Words: Inhibition, Plant pathogens, Quantum dot LED, Suppression
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