Response of Arabidopsis thaliana Roots with Altered Lipid Transfer Protein (LTP) Gene Expression to the Clubroot Disease and Salt Stress

Plants

Sabine Jülke¹  Jutta Ludwig-Müller²  Rujin Chen²  Eleftherios P. Eleftheriou² 

[1] Institut für Botanik, Technische Universität Dresden, Dresden 01062, Germany

关键词: Arabidopsis thaliana;    clubroot disease;    lipid transfer protein;    salt stress;    osmotic stress;    Plasmodiophora brassicae;    root growth;   

DOI  :  10.3390/plants5010002

来源: mdpi

【 摘 要 】

The clubroot disease of Brassicaceae is caused by the obligate biotrophic protist Plasmodiophora brassicae. The disease is characterized by abnormal tumorous swellings of infected roots that result in reduced drought resistance and insufficient distribution of nutrients, leading to reduced crop yield. It is one of the most damaging diseases among cruciferous crops worldwide. The acquisition of nutrients by the protist is not well understood. Gene expression profiles in Arabidopsis thaliana clubroots indicate that lipid transfer proteins (LTPs) could be involved in disease development or at least in adaptation to the disease symptoms. Therefore, the aim of the study was to examine the role of some, of the still enigmatic LTPs during clubroot development. For a functional approach, we have generated transgenic plants that overexpress LTP genes in a root specific manner or show reduced LTP gene expression. Our results showed that overexpression of some of the LTP genes resulted in reduced disease severity whereas the lipid content in clubs of LTP mutants seems to be unaffected. Additional studies indicate a role for some LTPs during salt stress conditions in roots of A. thaliana.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.