Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying, 257300, China.
Baoshan Branch, Yunnan Tobacco Company, Baoshan, 678000, China.
J Environ Manage. 2023 Nov 1;345:118836. doi: 10.1016/j.jenvman.2023.118836. Epub 2023 Aug 25.
Soil salinization can affect the ecological environment of soil and alter greenhouse gas (GHG) emissions. Chitooligosaccharides and Arbuscular mycorrhizal fungi (AMF) reduced the GHG fluxes of salinized soil, and this reduction was attributed to an alteration in the rhizosphere microecology, including changes in the activities of β-glucosidase, acid phosphatase, N-acetyl-β-D-glucosidase, and Leucine aminopeptidase. Additionally, certain bacteria species such as paracoccus, ensifer, microvirga, and paracyclodium were highly correlated with GHG emissions. Another interesting finding is that foliar spraying of chitooligosaccharides could transport to the soybean root system, and improve soybean tolerance to salt stress. This is achieved by enhancing the activities of antioxidant enzymes, and the changes in amino acid metabolism, lipid metabolism, and membrane transport. Importantly, the Co-application of chitooligosaccharides and Arbuscular mycorrhiza fungi was found to have a greater effect compared to their application alone.
土壤盐渍化会影响土壤生态环境，并改变温室气体（GHG）排放。壳寡糖和丛枝菌根真菌（AMF）降低了盐渍化土壤的 GHG 通量，这种减少归因于根际微生态的改变，包括β-葡萄糖苷酶、酸性磷酸酶、N-乙酰-β-D-葡萄糖苷酶和亮氨酸氨肽酶活性的变化。此外，某些细菌物种，如副球菌、固氮菌、微杆菌和拟杆菌，与 GHG 排放高度相关。另一个有趣的发现是，壳寡糖的叶面喷施可以运输到大豆根系，并提高大豆对盐胁迫的耐受性。这是通过增强抗氧化酶的活性，以及氨基酸代谢、脂质代谢和膜转运的变化来实现的。重要的是，与单独施用相比，发现壳寡糖和丛枝菌根真菌的共同施用效果更大。
