Chiang Mai Journal of Science

Salicylic Acid Elicitor Inhibiting Xanthomonas oryzae Growth, Motility, Biofilm, Polysaccharides Production, and Biochemical Components during Pathogenesis on Rice

Paper Type	Contributed Paper
Title	Salicylic Acid Elicitor Inhibiting Xanthomonas oryzae Growth, Motility, Biofilm, Polysaccharides Production, and Biochemical Components during Pathogenesis on Rice
Author	Wannaporn Thepbandit, Natthiya Buensanteai, Kanjana Thumanu, Supatcharee Siriwong, Toan Le Thanh and Dusit Athinuwat
Email	athinova6@hotmail.com
Abstract: The application of a salicylic acid elicitor to rice plants can effectively control bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae (Xoo). This method exhibited antibacterial activity at high concentrations of ≥250 ppm which can significantly reduce growth of Xoo and disease severity. Salicylic acid affected the bacterial population, swimming motility, twitching motility, biofilm formation, polysaccharides production, and cell components of the Xoo. By using Synchrotron Radiation-based Fourier Transform Infra-Red (SR-FTIR) microspectroscopy, changes on the biochemical components of Xoo were detected in the cell membrane identified as fatty acid (2825 cm-1), nucleic acid, and phospholipid groups (1162 and 1040 cm−1) when comparing with the untreated samples. The results indicated that the salicylic acid elicitor can be used as an antibacterial agent to control bacterial leaf blight of rice by changing its biochemical components and reducing the virulence factors of this pathogen.
Start & End Page	341 - 353
Received Date	2020-09-26
Revised Date
Accepted Date	2021-02-22
Full Text	Download
Keyword	bacterial leaf blight, biofilm, extracellular polysaccharides, motility, salicylic acid, Xanthomonas oryzae
Volume	Vol.48 No.2 (March 2021)
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