*4.1. Plant Materials*

The seeds of *B. halophila* were obtained from Xinjiang Academy of Forestry. After germination, the seedlings of *B. halophila* were grown in the greenhouse in Chinese Academy of Forestry. Leaves were collected from eight-months-old plants, the fourth or fifth leaf from top to bottom was used for sampling and RNA extraction. Three independent biological replicates were performed for each experiment. All samples were frozen and stored in liquid nitrogen until use.
