A resilient bunch: stem cell antiviral immunity in plants
Dec 6, 2023 · Stem cells are vital for plant development and reproduction. The stem cells within shoot apical meristems are known to possess exceptionally effective antiviral defenses against pathogenic viruses which preclude their infection, yet how this is achieved remains poorly understood and scarcely investigated.
Antiviral defense in plant stem cells - ScienceDirect
Sep 1, 2024 · These plant stem cells are destined to develop into various tissues and organs such as roots, leaves, flowers, and seeds. One common feature of plant and animal stem cells is that they have evolved distinct antiviral mechanisms and are often resistant to viral invasion.
WUSCHEL triggers innate antiviral immunity in plant stem cells
Oct 9, 2020 · Our results reveal a conserved strategy in plants to protect stem cells against viral intrusion and provide a molecular basis for WUSCHEL-mediated broad-spectrum innate antiviral immunity in plants.
Antiviral defense in plant stem cells - PubMed
By comparison to animal stem cells, we discuss how plant stem cells defend against viral invasion and beyond. Keywords: RNAi; antiviral immunity; meristem virus exclusion; plant stem cell; shoot apical meristem.
Salicylic acid-driven innate antiviral immunity in plants
Jul 1, 2024 · Plant stem cells (also known as meristematic cells) in the shoot apical meristem (SAM) have long been known to be resistant to viral infection. These stem cells are involved in the development of all aboveground plant tissues, including flowers and gametophytes.
Salicylic acid and RNA interference mediate antiviral immunity of plant …
Oct 17, 2023 · Here, we show that a plant-encoded RNA-dependent RNA polymerase, after activation by the plant hormone salicylic acid, amplifies antiviral RNAi in infected tissues. This provides stem cells with RNA-based virus sequence …
Antiviral defense in plant stem cells - Cell Press
May 18, 2024 · Undifferentiated plant and animal stem cells are essential for cell, tissue, and organ differentiation, development, and growth. They possess unusual antiviral immunity which differs from that in specialized cells.
RNAi, a sword of plant seeds to combat viral infections
Oct 9, 2024 · In this issue of Cell Host & Microbe, Liu and Ding demonstrate the genetic requirement of RNA silencing (RNAi) pathway for plants to suppress seed transmission. Plant viruses are intracellular parasites that rely entirely on host cells to complete their life cycle.
Under siege: virus control in plant meristems and progeny
May 20, 2021 · In this review, we summarize the current understanding of the molecular mechanisms that exclude viruses from plant stem cells and progeny. We also discuss the evidence connecting viral invasion of meristematic cells and the ability of plants to recover from acute infections.
Plant Immune Responses Against Viruses: How Does a Virus …
Plants respond to pathogens using elaborate networks of genetic interactions. Recently, significant progress has been made in understanding RNA silencing and how viruses counter this apparently ubiquitous antiviral defense.