Pantoea agglomerans, a seed-borne plant pathogenic bacterium, decreased seed germination, seedling growth and seed quality of oat

Jianjun Wang, Taixiang Chen, James F. White, Xuekai Wei, Xiuzhang Li, Chunjie Li

Research output: Contribution to journalArticlepeer-review

Abstract

Germination characteristics and nutritional qualities of oat seed are the most important factors influencing plant growth, crop yield and food quality. Pantoea agglomerans has been reported as a pathogen causing leaf blight diseases, but little is known about the influence of this bacterium on seed germination, seedling growth and seed quality of oat. The aim of our work is to evaluate the effects of this seed-borne pathogenic bacterium on seed germination, seedling growth and nutritional quality of Avena sativa (B7) and A. nuda (B2). Interestingly, the germination rate (GR), germination potential (GP), germination index (GI) and vigor index (VI), shoot length, root length, dry weight, ash, protein, total starch, β-glucan, phytic acid, total phosphorus and Ca of A. nuda and A. sativa were significantly (P<0.05) decreased by P. agglomerans, and the AGT was significantly (P<0.05) prolonged. Furthermore, A. nuda had a higher seed germination, seedling growth and nutritional quality than A. sativa under CK and P. agglomerans treatments. This study demonstrated that P. agglomerans has strong pathogenicity to oat seeds, meanwhile, it also inhibits seed germination and seedling growth and causes losses in nutritional quality of oat seeds in storage. This is the first comprehensive study of pathogenicity of P. agglomerans to oat seeds, and its influence on seed germination, seedling growth and seed nutritional quality of covered and naked oat seeds.

Original languageEnglish (US)
Pages (from-to)667-679
Number of pages13
JournalEuropean Journal of Plant Pathology
Volume162
Issue number3
DOIs
StatePublished - Mar 2022

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Plant Science
  • Horticulture

Keywords

  • Bacterial pathogenicity
  • Oat
  • Pantoea agglomerans
  • Seed germination
  • Seed quality
  • Seedling growth

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