Sharma Lav, Oliveira Irene, Gonçalves Fátima, Raimundo Fernando, Singh Rupesh Kumar, Torres Laura, Marques Guilhermina
Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro (CITAB-UTAD), 5000-801 Vila Real, Portugal.
Centre for Computational and Stochastic Mathematics, University of Lisbon (CEMAT-IST-UL), 1049-001 Lisbon, Portugal.
Pathogens. 2021 Jan 30;10(2):137. doi: 10.3390/pathogens10020137.
Entomopathogenic fungi (EPF) contribute to different ecosystem services. However, factors affecting their natural occurrences in soil remain poorly understood. In a previous study, 81 soil samples were subjected to insect baiting using and to isolate EPF from Portuguese vine farms. Here, soils yielding any of the four common EPF, i.e., , , , and f. , were correlated with their chemical properties. was negatively affected by higher available P ( = 0.02), exchangeable K-ions ( = 0.016) and positively affected by higher soil pH_HO ( = 0.021). High exchangeable K-ions inhibited ( = 0.011) and promoted f. ( = 0.03). Moreover, high available K also suppressed ( = 0.027). was inhibited by higher organic matter content ( = 0.009), higher C:N ( = 0.017), total N ( = 0.007), and exchangeable Mg-ions ( = 0.026), and promoted by higher exchangeable Na-ions ( = 0.003). Nonetheless, mean comparisons and principal component analysis suggested that higher soil pH and exchangeable Ca-ions have contrasting effects on EPF occurrences, as they promote and inhibit . Herbicides did not seem to affect EPF presence. Overall, this study is among the first reports on the effects of soil chemistry on EPF other than , and will facilitate biological pest management approaches.
昆虫病原真菌（EPF）对不同的生态系统服务有贡献。然而，影响它们在土壤中自然发生的因素仍知之甚少。在之前的一项研究中，对81个土壤样本进行了昆虫诱饵试验，使用[具体昆虫]来从葡萄牙葡萄园农场分离EPF。在这里，产生四种常见EPF中的任何一种的土壤，即[具体真菌种类1]、[具体真菌种类2]、[具体真菌种类3]和[具体真菌种类4]变种，与它们的化学性质相关。[具体真菌种类1]受到较高有效磷（p = 0.02）、可交换钾离子（p = 0.016）的负面影响，而受到较高土壤pH_HO（p = 0.021）的正面影响。高可交换钾离子抑制[具体真菌种类2]（p = 0.011）并促进[具体真菌种类4]变种（p = 0.03）。此外，高有效钾也抑制[具体真菌种类3]（p = 0.027）。[具体真菌种类2]受到较高有机质含量（p = 0.009）、较高碳氮比（p = 0.017）、总氮（p = 0.007）和可交换镁离子（p = 0.026）的抑制，并受到较高可交换钠离子（p = 0.003）的促进。尽管如此，均值比较和主成分分析表明，较高的土壤pH和可交换钙离子对EPF的发生有相反的影响，因为它们促进[具体真菌种类1]而抑制[具体真菌种类2]。除草剂似乎不影响EPF的存在。总体而言，本研究是关于土壤化学对除[某种特定真菌]之外的EPF影响的首批报告之一，并将促进生物害虫管理方法。
