Cell-to-Cell Communication During Plant-Pathogen Interaction

Abstract

Recognition of pathogen activates cellular signaling such as ROS, MAPK, Ca2+ signaling which ultimately fine-tunes the cell to cell communication. These further coordinates with the hormone signaling to execute the defense response at local and systemic level. Interestingly, phytopathogens have also evolved to manipulate the cellular and hormonal signaling and/or exploit hosts cell to cell connection in multiple ways at multiple levels. Overall, the triumph over the pathogen depends on prime decisions and actions-how the plant maintain, regulate and eventually break the intercellular communication through apoplastic and symplastic routes. Here, we review how intercellular communication in plants is mediated, manipulated and maneuvered during plant-pathogen interaction. Key words: Cell to cell communication, plant defense, plasmodesmata, phytohormones

Sugarcane responses to two strains of Xanthomonas albilineans differing in pathogenicity through a differential modulation of salicylic acid and reactive oxygen species

“…Plants are continuously challenged by diverse pathogens and have evolved a two-tiered immunity system, namely pattern-triggered immunity (PTI) and effector-triggered immunity (ETI) ( Tabassum and Blilou, 2022 ; Ngou et al., 2022 ). At PTI stage, the pathogen recognized by the plant activates a complex network of signaling pathways such as reactive oxygen species (ROS), mitogen-activated protein kinase (MAPK), Ca 2+ pathways, and hormone signaling that constitute the plant’s basal defense response ( Tabassum and Blilou, 2022 ). Salicylic acid (SA) biosynthesis and SA-mediated signaling pathway play a key role in plants for establishment of resistance to many pathogens ( Ding and Ding, 2020 ).…”

Understanding plant pathogen interactions using spatial and single-cell technologies

“…Hallmarks of plant immune responses (ROS, Ca 2+ , DAMP production) act as important signaling molecules for cell-to-cell communication 89 . Global reprogramming of plant tissues for defense compromises plant growth 90 .…”

Gain-of-function mutant of movement protein allows systemic transport of a defective tobacco mosaic virus

“…Most plant viruses spread within their hosts by a bimodal process, i.e., by local and systemic movement. Local infection is mediated by cell-to-cell movement, in which the virus moves from the infected to healthy cells through plasmodesmata (PD), the plant intercellular connections ( Tabassum and Blilou, 2022 ). Once the local infection reaches the plant vascular system, systemic movement ensues to spread the viral infection to distant plant tissues ( Kappagantu et al., 2020 ).…”