Interactions between root endophytic microorganisms and the reduced negative ion release capacity of Rchb. f. under high temperature stress.

INTRODUCTION

Negative oxygen ions are produced by plants through photosynthesis, utilizing "tip discharge" or the photoelectric effect, which has various functions such as sterilization, dust removal, and delaying aging. With global warming, high temperatures may affect the ability of Rchb. f. to produce negative oxygen ions. is commonly used in modern landscape planning and forest greening.

METHODS

In this study, was selected as the research object. By artificially simulating the climate, the control group (CK) and the high temperature stress group (HS) were set up in the experiment.

RESULTS

The study found that compared with the control group, the ability of to produce negative oxygen ions significantly decreased when exposed to high temperature stress. Meanwhile, under high temperature stress treatment, peroxidase content increased by 102%, and proline content significantly increased by 35%.

DISCUSSION

Redundancy analysis results indicated a significant correlation between the root endophytic microbial community of and negative oxygen ions, as well as physiological indicators. Under high temperature stress, may affect the regulation of physiological indicators by modifying the composition of root endophytic microbial communities, thereby influencing the ability to release negative oxygen ions.