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논문 기본 정보

자료유형
학술저널
저자정보
Young Hee Lee (Gyeongnam National University of Science and Technology (GNTech)) Su Jeong Jang (Gyeongnam National University of Science and Technology (GNTech)) Joon-Hee Han (Kangwon National University) Jin Su Bae (Gyeongnam National University of Science and Technology (GNTech)) Hyunsuk Shin (Gyeongnam National University of Science and Technology (GNTech)) Hee Jin Park (Konkuk University) Mee Kyung Sang (Rural Development Administration) Song Hee Han (Hyunnong) Kyoung Su Kim (Kangwon National University) Sang-Wook Han (Chung-Ang University) Jeum Kyu Hong (Gyeongnam National University of Science and Technology (GNTech))
저널정보
한국식물병리학회 The Plant Pathology Journal The Plant Pathology Journal 제34권 제6호
발행연도
2018.12
수록면
555 - 566 (12page)

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Two rhizobacteria Bacillus aryabhattai H26-2 and B. siamensis H30-3 were evaluated whether they are involved in stress tolerance against drought and high temperature as well as fungal infections in Chinese cabbage plants. Chinese cabbage seedlings cv. Ryeokgwang (spring cultivar) has shown better growth compared to cv. Buram-3-ho (autumn cultivar) under high temperature conditions in a greenhouse, whilst there was no difference in drought stress tolerance of the two cultivars. In vitro growth of B. aryabhattai H26-2 and B. siamensis H30-3 were differentially regulated under PEG 6000-induced drought stress at different growing temperatures (30, 40 and 50°C). Pretreatment with B. aryabhattai H26-2 and B. siamensis H30-3 enhanced the tolerance of Chinese cabbage seedlings to high temperature, but not to drought stress. It turns out that only B. siamensis H30-3 showed in vitro antifungal activities and in planta crop protection against two fungal pathogens Alternaria brassicicola and Colletotrichum higginsianum causing black spots and anthracnose on Chinese cabbage plants cv. Ryeokgwang, respectively. B. siamensis H30-3 brings several genes involved in production of cyclic lipopeptides in its genome and secreted hydrolytic enzymes like chitinase, protease and cellulase. B. siamensis H30-3 was found to produce siderophore, a high affinity iron-chelating compound. Expressions of BrChi1 and BrGST1 genes were up-regulated in Chinese cabbage leaves by B. siamensis H30-3. These findings suggest that integration of B. aryabhattai H26-2 and B. siamensis H30-3 in Chinese cabbage production system may increase productivity through improved plant growth under high temperature and crop protection against fungal pathogens.

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Materials and Methods
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