Enhancing plant defensins in a desert shrub: Exploring a regulatory pathway of AnWRKY29
Shuyao Wang1, Yahui Liu1, Xin Hao1
1National Engineering Research Center of Tree breeding and Ecological restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.
Abstract:
A distinct family of plant-specific WRKY transcription factors plays a crucial role in modulating responses to biotic and abiotic stresses. In this investigation, we unveiled a signaling pathway activated in the desert shrub Ammopiptanthus nanus during feeding by the moth Spodoptera exigua. The process involves a Ca2+ flux that facilitates interaction between the protein kinase AnCIPK12 and AnWRKY29. AnWRKY29 directly interacts with the promoters of two key genes encoding AnPDF1 and AnHsfB1, involved in the biosynthesis of plant defensins. Consequently, AnWRKY29 exerts its transcriptional regulatory function, influencing plant defensins biosynthesis. This discovery implies that A. nanus can bolster resistance against herbivorous insects like S. exigua by utilizing this signaling pathway, providing an effective natural defense mechanism that supports its survival and reproductive success.
Related Concept Videos
Cell Signaling in Plants
Defenses Against Pathogens and Herbivores
Adaptations that Reduce Water Loss
Introduction to Plant Diversity
Regulation of Transpiration by Stomata
Short-distance Transport of Resources


