ISHS Acta Horticulturae 1269: XXX International Horticultural Congress IHC2018: II International Symposium on Innovative Plant Protection in Horticulture
Effects of nanomaterials on seedling growth and disease control |
| Authors: | P.-F.L. Chang, T.-H. Chang, Y.-W. Liu, C.-C. Chen, W.-Y. Li, W.-H. Chung, J.-J. Lin, J.-W. Huang |
| Keywords: | disease control, growth inhibition, growth promotion, nanoparticles, plant |
| DOI: | 10.17660/ActaHortic.2020.1269.36 |
| Abstract:
Nanomaterials (NMs) are defined as materials with particle sizes between 1 and 100 nm. Some NMs have potential applications for plant growth promotion and disease control. In this study, silver nanoparticles (in forms of nano-scale silica platelets (AgNP/NSP)) and nano-scale silica platelets (NSP), together with micro/nano-sized calcium-silica composites (NCaSi) were tested for their effects on seedling growth and disease control. The results showed that AgNP/NSP inhibited growth of fungal pathogens. We also tested the effects of AgNP/NSP, NSP, and NCaSi on the growth of Chinese cabbage (baby pak choi), lettuce, tomato, and watermelon. AgNP/NSP reduced seed germination, root elongation and seedling growth of some test plants. However, NCaSi promoted tomato seedling growth and reduced diseases. NCaSi induced the production of some pathogenesis-related proteins and stress proteins, and also provided protection to plants against pathogens. Thus, application of NMs in plant disease management should be carefully evaluated. | |
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