TALEs as double-edged swords in plant-pathogen interactions: Progress, challenges, and perspectives

Area of Science:

• Plant pathology
• Microbial genetics
• Crop science

Background:

• Xanthomonas species cause significant global crop losses.
• Transcription activator-like effectors (TALEs) are key virulence factors secreted by Xanthomonas.
• TALEs manipulate host gene expression, affecting plant susceptibility and resistance.

Purpose of the Study:

• To review the current understanding of Xanthomonas-host interactions.
• To explore the dual role of TALEs in plant susceptibility and resistance.
• To highlight the implications of TALE research for crop improvement.

Main Methods:

• Literature review of studies on Xanthomonas-host interactions.
• Analysis of TALE function in various plant species, including rice.
• Synthesis of research on TALE evolution and gene editing applications.

Main Results:

• TALEs are crucial for Xanthomonas pathogenicity and host colonization.
• TALEs play a complex role, acting as both susceptibility factors and components of plant resistance.
• Characterization of TALEs has advanced understanding of their evolution and led to gene editing tool development.

Conclusions:

• Xanthomonas TALEs are central to plant disease dynamics.
• Understanding TALE-host interactions offers novel strategies for enhancing crop resistance.
• TALE research facilitates genetic engineering approaches for sustainable agriculture.