Salicylic acid-induced accumulation of biochemical components associated with resistance against Xanthomonas oryzae pv. oryzae in rice. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Le Thanh, Toan; Thumanu, Kanjana; Wongkaew, Sopone; Boonkerd, Nantakorn; Teaumroong, Neung; Phansak, Piyaporn; Buensanteai, Natthiya
• Is Part Of: Journal of plant interactions. Volume 12:Issue 1(2017)
• Page Start: 108
• Page End: 120
• Publication Date: 2017-01-01
• Subjects: Bacterial leaf blight -- salicylic acid -- rice -- defence reactions -- biochemical change -- FTIR; Plant ecophysiology -- Periodicals; Plants -- Periodicals; Toxins -- Periodicals; 581.7
• DOI: 10.1080/17429145.2017.1291859
• Languages: English
• ISSNs: 1742-9145

Abstract

ABSTRACT: Seed treatment and foliar sprays of salicylic acid (SA) provided protection in rice against bacterial leaf blight (BLB) caused by bacterial Xanthomonas oryzae pv. oryzae ( Xoo ). Treatment of rice with exogenous SA reduced disease severity by more than 38%. Superoxide anion production and hypersensitive response increased approximately 28% and 110% at 6 and 48 h after Xoo inoculation, respectively, for plants treated with SA. Moreover, the Xoo in treated rice plants grew more slowly, resulting in a population that was half of that observed in the control. Fourier transform infrared spectroscopy analysis revealed that the higher ratios of 1233/1517, 1467/1517, and 1735/1517 cm −1 observed in treated rice suggested alteration of monomer composition of lignin and pectin in the rice cell wall. Exogenous SA-treated rice had more amide I β-sheet structure and lipids as shown by the peaks at 1629, 2851, and 1735 cm −1 . These biochemical changes of rice treated with SA and inoculated with Xoo were related to primed resistance of the rice plants to BLB disease.