CmMLO17 and its partner CmKIC potentially support Alternaria alternata growth in Chrysanthemum morifolium.

ABSTRACT: The Mildew Resistance Locus O (MLO) gene family has been investigated in many species. However, there are few studies on chrysanthemum MLO genes. We report in this study that CmMLO17 in Chrysanthemum morifolium was upregulated after Alternaria alternata infection. Silencing of CmMLO17 by artificial microRNA resulted in reduced susceptibility of chrysanthemum to A. alternata infection. Genes in the abscisic acid (ABA) and Ca²⁺ signaling pathways were upregulated in the CmMLO17-silenced line R20 compared to the wild-type plants. We speculated that CmMLO17-silenced plants had a faster and stronger defense response that was mediated by the ABA and Ca²⁺ signaling pathways, resulting in reduced susceptibility of chrysanthemum to A. alternata infection. In addition, a candid

SUBMITTER: Xin J 

PROVIDER: S-EPMC8087703 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature