Tan Yunxiang, Lv Yunhang, Xv Mengyu, Qu Laiye, Wang Wenjuan
School of Ecology, Hainan University, Haikou 570228, China.
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
J Fungi (Basel). 2024 Aug 10;10(8):565. doi: 10.3390/jof10080565.
, , and are, respectively, typical arboreal, shrubby, and herbaceous species in oases of arid regions. It is important to study the difference in metabolic characteristics of the rhizosphere fungal community of these plant species and their relationships with soil factors for the preservation of delicate arid oasis ecosystems with future environmental changes. In this study, we, respectively, collected 18 rhizosphere soil samples of , . , and to explore the difference in rhizosphere fungal metabolic characteristics of different plant life forms and their underlying driving factors. The results showed that (1) soil physicochemical properties (including soil water content, pH, etc.) were significantly different among different plant species ( < 0.05). (2) Rhizosphere fungal metabolic characteristics were significantly different between and (ANOSIM, < 0.05), which was mainly caused by the different utilization of carboxylic carbon. (3) The RDA showed that the main driving factors of the variations in rhizosphere fungal metabolic characteristics were different among different plant species. The main explanatory variables of the variations in the metabolic characteristics of the rhizosphere fungal community were carbon to nitrogen ratio (23%) and available potassium (17.4%) for , while soil organic carbon (23.1%), pH (8.6%), and total nitrogen (8.2%) for , and soil clay content (36.6%) and soil organic carbon (12.6%) for . In conclusion, the variations in rhizosphere fungal metabolic characteristics in arid oases are dominantly affected by soil factors rather than plant life forms.
[植物名称1]、[植物名称2]和[植物名称3]分别是干旱地区绿洲典型的乔木、灌木和草本物种。研究这些植物物种根际真菌群落代谢特征的差异及其与土壤因子的关系，对于在未来环境变化下保护脆弱的干旱绿洲生态系统具有重要意义。在本研究中，我们分别采集了[植物名称1]、[植物名称2]和[植物名称3]的18个根际土壤样本，以探讨不同植物生活型根际真菌代谢特征的差异及其潜在驱动因素。结果表明：（1）不同植物物种间土壤理化性质（包括土壤含水量、pH值等）存在显著差异（P<0.05）。（2）[植物名称1]和[植物名称2]之间根际真菌代谢特征存在显著差异（ANOSIM，P<0.05），这主要是由于羧酸碳利用的不同所致。（3）冗余分析（RDA）表明，不同植物物种根际真菌代谢特征变化的主要驱动因素不同。[植物名称1]根际真菌群落代谢特征变化的主要解释变量是碳氮比（23%）和有效钾（17.4%），[植物名称2]是土壤有机碳（23.1%）、pH值（8.6%）和全氮（8.2%），[植物名称3]是土壤粘粒含量（36.6%）和土壤有机碳（12.6%）。综上所述，干旱绿洲根际真菌代谢特征的变化主要受土壤因子而非植物生活型的影响。
