Abstract
Southern blight, caused by Sclerotium rolfsii Sacc., is a significant disease of apple in China and many other counties. Sclerotium germination and hyphal growth are two critical processes for epidemic development. Controlled experiments were conducted to study the effects of environmental conditions on sclerotium germination and hyphal growth of the pathogen. Temperature for sclerotium germination and hyphal growth of S. rolfsii ranges from 15 to 35oC with the optimum at 31.5oC. The soil water content needs to exceed 30%, and once over this threshold, soil water content did not affect sclerotium germination and hyphal growth. The rate of sclerotium germination was high in sawdust, and hyphae grew fastest in the mixture of sawdust and soil. Sclerotium germination and hyphal growth were inhibited in nursery substrate. Hyphal growth was affected by pH but to a far lesser extent sclerotium germination. Soaking in water inhibited sclerotium germination.
Similar content being viewed by others
References
Bhardwaj, L. N., and Agarwala, R. K. (1986). Effect of some important edaphic factors on the incidence of seedling blight of apple caused by Sclerotium rolfsii Sacc. In T. R. Chadha (Ed.), Advances in research on temperate fruits (pp. 403-406): Parmar University of Horticulture and Forestry, India.
Billah, K. M. M. (2017). Pathogenicity of Sclerotium rolfsii on different hosts, and its over wintering survival; a mini review. Journal of Advances in Agriculture, 2(1), 2456–75152.
Brown, E. A., & Hendrix, F. F. (1980). Distribution and control of Sclerotium rolfsii on apple. Plant Disease Reporter, 64(2), 205–206.
Bulluck, L. R., & Ristaino, J. B. (2002). Effect of synthetic and organic soil fertility amendments on southern blight, soil microbial communities, and yield of processing tomatoes. Phytopathology, 92(2), 181–189.
Conway, K. E., Tomasino, S., & Claypool, P. L. (1996). Evaluations of biological and chemical controls for southern blight of apple rootstock in Oklahoma nurseries. Proceedings of Oklahoma Academy of Sciences, 76, 9–15.
Cooley, J. S. (1936). Sclerotium rolfsii as a disease of apple nursery trees. Phytopathology, 26, 1081–1083.
Cooley, J. S. (1946). Root diseases of deciduous fruit trees. Botanical Review, 12(2), 83–100.
Corazza, L., Belisario, A., & Forti, E. (1999). First report of root and collar rot by Sclerotium rolfsii on apple trees in Italy. Plant Disease, 83(7), 695–695.
Epps, W. M., Patterson, J. C., & Freeman, I. E. (1951). Physiology and parasitism of Sclerotium rolfsii. Phytopathology, 41(3), 245–256.
Gao, C., Li, D., Li, B., Zhang, J., and Dong, X. (2019). Screening and application of fungicides against southern blight caused by Sclerotium rolfsii on apple. Plant Protection 45(04):255-260+270.
Hadar, Y., & Gorodecki, B. (1991). Suppression of germination of sclerotia of Sclerotium rolfsii in compost. Soil Biology & Biochemistry, 23(3), 303–306.
Kalaigrami, L., Mnarihattab, M., Terres, R., Dridi, M., & Hajlaoui, M. R. (2013). First report of apple collar rot incited by Sclerotium rolfsii in Tunisia. Journal of Plant Pathology, 95, 4–71.
Kator, L., Hosea, Z. Y., & Oche, O. D. (2015). Sclerotium rolfsii; causative organism of southern blight, stem rot, white mould and sclerotia rot disease. Annals of Biological Research, 6(11), 78–89.
Lifshitz, R., Tabachnik, M., Katan, J., & Chet, I. (1983). The effect of sublethal heating on sclerotia of Sclerotium rolfsii. Canadian Journal of Microbiology, 29(12), 1607–1610.
Liu, M., Song, L., Zhao, L., Tang, Y., Sun, Y., Zhang, X., & Jiang, Z. (2018). Occurrence and control of apple southern blight. Yantai Fruits, 04, 35.
Punja, Z. K. (1985). The biology, ecology, and control of sclerotium rolfsii. Annual Review of Phytopathology, 23(1), 97–127.
Punja, Z. K. (1988). Sclerotium (Athelia) rolfsii, a Pathogen of Many Plant Species. Pages In G. S. Sidhu (Ed.), Advances in Plant Pathology (vol. 6, pp. 523-534): Academic Press.
Punja, Z. K., & Jenkins, S. F. (1984). Influence of temperature, moisture, modified gaseous atmosphere, and depth in soil on eruptive sclerotial germination of Sclerotium rolfsii. Phytopathology, 74(6), 749–754.
Rodriguezkabana, R., Beute, M. K., & Backman, P. A. (1980). A method for estimating numbers of viable sclerotia of Sclerotium rolfsii in soil. Phytopathology, 70(6), 917–919.
Sarma, B. K., Singh, U. P., & Singh, K. P. (2002). Variability in Indian isolates of Sclerotium rolfsii. Mycologia, 94(6), 1051–1058.
Shay, J. R. (1953). Southern blight of apple nursery stock in Indiana. Plant Disease Reporter, 37, 121.
Sonali, & Gupta, A. K. (2004). Efficacy of plant materials on inhibition of sclerotial germination of Sclerotium rolfsii. Journal of Mycology & Plant Pathology, 34(2), 382–384.
Xu, C., Chi, F., Ji, Z., Zhang, J., Wang, N., and Zhou, Z. (2019). Biological characteristics of southern blight pathogen and laboratory toxicity test of fungicides. South China Fruit 48(04):99-103+106.
Xu, Z., Gleason, M. L., Mueller, D. S., Esker, P. D., Bradley, C. A., Buck, J. W., Benson, D. M., Dixon, P., & Monteiro, J. E. B. A. (2008). Overwintering of Sclerotium rolfsii and S. rolfsii var. delphinii in different latitudes of the United States. Plant Disease, 92(5), 719–724.
Zhu, C. (2017). Causes and control of southern blight outbreak on dwarf rootstock apple trees in Yishui County. Northern Fruits, 1, 36.
Zmora-Nahum, S., Danon, M., Hadar, Y., & Chen, Y. (2008). Chemical properties of compost extract inhibitory to germination of Sclerotium rolfsii. Soil Biology and Biochemistry, 40(10), 2523–2529.
Zoberi, M. H. (1980). Some nutritional factors regulating formation of sclerotia of Sclerotium rolfsii. Botany, 58(23), 2484–2490.
Zwietering, M. H., De Koos, J. T., Hasenack, B. B. E., De Witt, J. C., & Riet, K. V. T. (1991). Modelling of bacterial growth as a function of temperature. Applied and Environmental Microbiology, 57(4), 1094–1101.
Acknowledgements
This research was funded by the China Agriculture Research System of MOF and MARA (CARS-28), the National Key Research and Development Program of China (2016YFD0201122), and the Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences (2017CXGC0214). We thank Professor Xiangming Xu for his review and revision of this article.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Human and animal rights
This research does not include any animal and/or human trials.
Conflict of interest
The authors declare that they have no conflicts of interest.
Rights and permissions
About this article
Cite this article
Dong, Xl., Gao, Cy., Li, Pl. et al. Effects of temperature, moisture, substrates and soil coverage on sclerotium germination and hyphal growth of Southern blight of apple in China. Eur J Plant Pathol 162, 477–487 (2022). https://doi.org/10.1007/s10658-021-02418-1
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10658-021-02418-1