Decreased potassium fertilization is associated with increased pathogen growth and disease severity caused by Acidovorax citrulli in melon foliage

Naama Zimerman-Lax, Dafna Tamir-Ariel, Moshe Shenker, Saul Burdman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The gram-negative bacterium Acidovorax citrulli causes bacterial fruit blotch (BFB) disease of cucurbits, which represents a serious threat to melon and watermelon production worldwide. To date, there are no efficient means to manage the disease, and reliable resistance sources for cucurbit germplasm are lacking. Mineral nutrition markedly affects plant diseases. Recently, we reported that disease severity on melon foliage and A. citrulli growth in the leaf tissue were significantly influenced by the form of nitrogen supply. In the present study, we investigated the influence of potassium nutrition on BFB severity and A. citrulli establishment in the foliage of melon plants. Fertilization with relatively low concentrations of potassium increased these variables compared with higher potassium concentrations. Since establishment of A. citrulli during the growing season is assumed to increase the incidence of fruit infection, the fact that mineral nutrition influences BFB incidence in the plant foliage is of particular importance.

Original languageAmerican English
Pages (from-to)27-34
Number of pages8
JournalJournal of General Plant Pathology
Volume84
Issue number1
DOIs
StatePublished - 1 Jan 2018

Bibliographical note

Publisher Copyright:
© 2017, The Phytopathological Society of Japan and Springer Japan KK.

Keywords

  • Acidovorax citrulli
  • Bacterial fruit blotch
  • Cucumis melo
  • Fertilization
  • Potassium

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