Effect of Bacillus aryabhattai H26-2 and B-siamensis H30-3 on Growth Promotion and Alleviation of Heat and Drought Stresses in Chinese Cabbageopen access
- Shin, Da Jeong; Yoo, Sung-Je; Hong, Jeum Kyu; Weon, Hang-Yeon; Song, Jaekyeong; Sang, Mee Kyung
- Issue Date
- KOREAN SOC PLANT PATHOLOGY
- abiotic stress; exopolysaccharide; soft rot
- PLANT PATHOLOGY JOURNAL, v.35, no.2, pp.178 - 187
- Journal Title
- PLANT PATHOLOGY JOURNAL
- Start Page
- End Page
- Plants are exposed to biotic stresses caused by pathogen attack and complex abiotic stresses including heat and drought by dynamic climate changes. To alleviate these stresses, we investigated two bacterial stains, H26-2 and H30-3 in two cultivars ('Ryeokkwang' and 'Buram-3-ho') of Chinese cabbage in plastic pots in a greenhouse. We evaluated effects of bacterial strains on plant growth-promotion and mitigation of heat and drought stresses; the role of exopolysaccharides as one of bacterial determinants on alleviating stresses; bio-control activity against soft rot caused by Pectobacterium carotovorum subsp. carotovorum PCC21. Strains H26-2 and H30-3 significantly increased fresh weights compared to a MgSO4 solution; reduced leaf wilting and promoted recovery after re-watering under heat and drought stresses. Chinese cabbages treated with H26-2 and H30-3 increased leaf abscisic acid (ABA) content and reduced stomatal opening after stresses treatments, in addition, these strains stably colonized and maintained their populations in rhizosphere during heat and drought stresses. As well as tested bacterial cells, exopolysaccharides (EPS) of H30-3 could be one of bacterial determinants for alleviation of tested stresses in Chinese cabbages, however, the effects were different to cultivars of Chinese cabbages. In addition to bacterial activity to abiotic stresses, H30-3 could suppress incidence (%) of soft rot in 'Buram-3-ho'. The tested strains were identified as Bacillus aryabhattai H26-2 and B. siamensis H30-3 based on 16S rRNA gene sequence analysis. Taken together, H26-2 and H30-3 could be candidates for both plant growth promotion and mitigation of heat and drought stresses in Chinese cabbage.
- Files in This Item
- There are no files associated with this item.
- Appears in
- 농업생명과학대학 > 원예과학부 > Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.