Nontoxic mesoporous silica nanoparticles protect Physcomitrium patens against salt stress
Ying Zhou, Zhuo Yang, Jiaxue Li, Xuemei Xia, Wei Yuan, Chen Li, Wenxiu Qiu, Li Liu, Liu Duan
TL;DR
Nontoxic silica nanoparticles help mosses resist salt stress by boosting stress-related genes and reducing harmful molecules.
Contribution
This study reveals how mesoporous silica nanoparticles enhance salt tolerance in mosses through gene expression and ROS regulation.
Findings
MSNs are nontoxic and increase salt tolerance in Physcomitrium patens.
MSN-treated mosses show increased expression of stress-related genes like POX, L-AO, AOX, and CPK.
MSNs reduce H2O2 and O2·− accumulation and modulate ROS homeostasis.
Abstract
Mosses play a crucial role in environmental protection, ecological preservation, and horticulture. While the effects of nanomaterials on angiosperms have been widely studied, their impact on bryophytes remains underexplored. In this study, we investigated the effects of mesoporous silica nanoparticles (MSNs) and virus-like mesoporous silica nanoparticles (VMSNs) on the model moss species Physcomitrium patens (P. patens). Our results revealed that MSNs, with an average size of approximately 123 nm, are nontoxic to P. patens and enhance its salt tolerance. The expression of key genes involved in stress responses were significantly induced in MSN-treated plants under salt stress, including peroxidase (POX), L-ascorbate oxidase (L-AO), alternative oxidase (AOX), and calcium-dependent protein kinase (CPK). MSN treatment reduced the accumulation of H2O2 and O2·−, increased Ca2+ signaling, and…
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Taxonomy
TopicsSilicon Effects in Agriculture · Plant Stress Responses and Tolerance · Nanoparticles: synthesis and applications