Author(s)

T.H. Ghabrial

Affiliation(s)

Department of Plant Pathology, University of Kentucky, Lexington, USA.

Corresponding Author

T.H. Ghabrial

ABSTRACT

Soybeans were treated with xylo-oligosaccharides at different concentrations to study the effects of xylo-oligosaccharides on soybean growth and mosaic virus (SMV) resistance. Greenhouse experimental results. It shows that: compared with the control after treating soybean seeds with xylo-oligosaccharide solution for 18 days, 50 mg·L-1 xylo-oligosaccharide has a significant promoting effect on the plant height, fresh weight and main root length of soybean seedlings. Soybean leaves sprayed with xylo-oligosaccharides were inoculated with SMV 18 hours later, which significantly reduced the SMV disease index compared with the control. Quantitative RT-PCR was used to detect the expression of defense-related genes in soybean leaves treated with xylo-oligosaccharides. Compared with the control, the defense genes PR2, PR10, PR12 and LOX2 had the highest expression levels when treated with xylo-oligosaccharides for 12 h. The relative expression level; PR3 had the highest relative expression level when treated with xylo-oligosaccharide for 18 h; the expression of PR1, PAL, PPO and CHS was significantly up-regulated when treated with xylo-oligosaccharide for 24 h. Studies have shown that xylo-oligosaccharides activate the soybean SA signaling pathway and JA signaling pathway, thereby improving soybean resistance to SMV.

KEYWORDS

Xylo-oligosaccharides; Soybean; Growth promotion; SMV resistance; Uantitative RT-PCR

CITE THIS PAPER

T.H. Ghabrial. Effects of Xylo-oligosaccharides on soybean growth and mosaic virus disease resistance. World Journal of Agriculture and Forestry Sciences. 2024, 2(2): 9-13. DOI: 10.61784/wjafsv2n228.

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