Salicylic Acid Seed Priming Enhanced Resistance in Wheat Against Fusarium graminearum Seedling Blight

• Published in: Journal of plant biology = Singmul Hakhoe chi Vol. 65; no. 5; pp. 423 - 434
• Main Authors: Sorahinobar, Mona, Safaie, Naser, Moradi, Babak
• Format: Journal Article
• Language: English
• Published: Singapore Springer Nature Singapore 01.10.2022; Springer Nature B.V; 한국식물학회
• Subjects: Acid resistance; Acids; Ammonia; Biomedical and Life Sciences; Blight; Chitinase; Crop diseases; Crop yield; Cultivars; Cytochrome P450; Cytochromes P450; Defense mechanisms; Drug resistance; Enzymes; Fusarium graminearum; Infections; Life Sciences; mRNA; Pathogens; Phenylalanine; Physiology; Plant Breeding/Biotechnology; Plant Ecology; Plant Genetics and Genomics; Plant growth; Plant resistance; Plant Sciences; Plant Systematics/Taxonomy/Biogeography; Polyphenol oxidase; Potassium; Priming; Research Article; Salicylic acid; Seedling blight; Seedlings; Seeds; Superoxide dismutase; Wheat; 생물학; Salicylic acid; Priming; Wheat; Seedling blight
• ISSN: 1226-9239; 1867-0725
• DOI: 10.1007/s12374-021-09329-y

Priming of seeds is a simple and low-cost method in agriculture that improves plant growth, crop yield, and manages pathogens. The current study was carried out to determine SA seed priming effect on susceptibility and resistance of two wheat cultivars (Falat and Sumai3) to Fusarium graminearum at the seedling stage. Both the 1 and 2 mM SA-primed seeds showed a higher level of resistance against F. graminearum , as a lower disease incidence of 53% and 63% in the Falat and 48% and 76% in the Sumai3 was observed compared to the F. graminearum -inoculated water-primed control. Along with the increased resistance induced by SA priming, we observed increased activities of superoxide dismutase (SOD), polyphenol oxidase (PPO), peroxidases (POX) and phenylalanine ammonia lyase (PAL), in addition to higher mRNA accumulation of PAL, β-1,3-glucanase ( GLU-2 ) , chitinase ( CHI ) , cytochrome P450 ( CYP ) , and pleiotropic drug resistance ( PDR ) genes compared to the water-primed F. graminearum -inoculated control. Therefore, SA seed priming is a suitable alternative to manage the incidence of F. graminearum infection by triggering plant defense responses.