Review of stress resistance and application of the pioneer plant Neyraudia reynaudiana

The gramineous plant, Neyraudia reynaudiana, is known for its strong stress resistance, wide ecological amplitude and other superior traits. These characteristics led to its broad application in southern China as a restoration pioneer plant. This paper discusses the distribution, biological characteristics, and drought, barren and heavy-metal pollution resistant qualities of N. reynaudiana. We discuss how N. reynaudiana uses morphological and physiological strategies, such as reducing root diameter, extending root length and range, to improve water and nutrient use efficiency. We also analyse the mechanism of heavy metal accumulation and tolerance. This paper reviewed the application of soil and water conservation, slope management and ecological restoration of N. reynaudiana, pointing out that the molecular and regulatory mechanisms of stress resistance and the survival mechanism under resistance need to be further studied. To provide a reference for further research on vegetation restoration and provide a theoretical basis for ecological application of N. reynaudiana, this paper summarized the reason for survival and the mechanisms that N. reynaudiana uses to adapt to stress resistance.