■杉木的树皮,中国南方森林地区最大的造林树种,容易受到小动物的伤害和叮咬。由于各个林区生态环境的改善,小动物的数量最近有所增加,从而增加了杉木树皮损伤的发生率。在这种伤害之后,树皮分泌淡黄色或乳白色分泌物,其功能尚不清楚。本研究旨在揭示不同杉木品种分泌物对5种细菌的抑菌效果。
■这项研究涉及三年大的红豆杉种植园。红豆杉和Yangkou3和3年的红豆杉容器种植园。Pendula,杨061,杨020。用滤纸扩散法分析了分泌物的抑菌效果。确定每种分泌物的最小抑制浓度和细菌抑制区。
■不同杉木树皮的分泌物对枯草芽孢杆菌有明显的抑菌效果,乙型副伤寒沙门氏菌,铜绿假单胞菌,大肠杆菌,和金黄色葡萄球菌。然而,这些抗菌作用的程度在不同杉木品种之间有所不同,由于分泌物对五种细菌的最低抑制浓度(MIC)不同。铜绿假单胞菌的平均MIC较低,而大肠杆菌是最低的。值得注意的是,分泌物的抗菌功效主要受分泌物的组成而不是分泌物的数量影响,有机酸化合物和萜类化合物可能有助于对大肠杆菌和枯草芽孢杆菌的抗菌作用,分别。
■这项研究证明了不同杉木品种伤口分泌物的抗菌作用,突出它们对不同细菌物种的不同功效。此外,菌株的分泌物的抗菌能力主要取决于伤口分泌物的组成,与伤口分泌物的数量没有明显关系。本研究结果为筛选高抗病性杉木品种提供了理论依据。
UNASSIGNED: The bark of Chinese fir (Cunninghamia lanceolata), the largest afforestation tree species in the forest areas of southern China, is susceptible to injuries and bites from small animals. The population of small animals has recently increased owing to improvements in the ecological environment across various forested areas, thus increasing the incidence of injuries in the bark of Chinese fir. Following such injuries, the bark secretes light yellow or milky white secretions, the function of which remains unclear. The present
study aimed to reveal the antibacterial effect of exudates of different Chinese fir cultivars on five bacterial species.
UNASSIGNED: The research involved three-year-old plantations of
Taxus chinensis var. koraiensis and Yangkou3 and three-year-old container plantations of
Taxus chinensis var. pendula, Yang 061, and Yang 020. The antibacterial effects of exudates were analyzed using the filter paper diffusion method. The minimum inhibitory concentration for each secretion and the bacterial inhibition zone were determined.
UNASSIGNED: The exudates of the different Chinese fir bark exhibited notable antibacterial effects on Bacillus subtilis, Salmonella paratyphi B, Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus. However, the extent of these antibacterial effects varied among the different Chinese fir cultivars, as the minimum inhibitory concentrations (MICs) of the exudates against the five bacterial species varied. The mean MIC of Pseudomonas aeruginosa was lower potency, whereas that of Escherichia coli was the lowest. Notably, the antibacterial efficacy of the exudates was mainly influenced by the composition of the secretions rather than the number of secretions, with organic acid compounds and terpenoids potentially contributing to the antibacterial effects against E. coli and Bacillus subtilis, respectively.
UNASSIGNED: This
study demonstrates the antibacterial effect of wound secretion of different Chinese fir cultivars, highlighting their varying efficacy on different bacterial species. Moreover, the antibacterial ability of the exudates of the strains was mainly determined by the composition of the wound secretions, and there was no noticeable relationship with the number of wound secretions. The results of this
study offers a theoretical basis for screen Chinese fir cultivars with high-disease-resistant.