Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis
Autor: | M.B. Silva, R.A.A. Santos, L.L. Longue, E. R. Schmildt, V. DꞌADDAZIO, D.M. Silva, A.S. Jardim, J.V.G. Silva, T.A. Santos, A.A. Fernandes, Antelmo Ralph Falqueto, L.H. Pfenning |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
Stomatal conductance Physiology photosystem plant nutrition Plant Science Photosynthesis 01 natural sciences plant defense lcsh:Botany Pepper Cultivar resistance responses plant disease photosynthesis biology Inoculation fungi food and beverages 04 agricultural and veterinary sciences biology.organism_classification Plant disease lcsh:QK1-989 Horticulture 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Plant nutrition Fusarium solani 010606 plant biology & botany |
Zdroj: | Photosynthetica, Vol 58, Iss 3, Pp 692-701 (2020) |
ISSN: | 1573-9058 0300-3604 |
Popis: | This study evaluated the effect of silicon (Si)-supplementation in controlling the fusariosis in two Piper nigrum cultivars (Bragantina and Kottanadan). We hypothesized that susceptible cultivar improves the photosynthetic performance with Si-supplementation. Under greenhouse conditions, six-month-old plants were treated with silicon 30 and 15 d before inoculation with Fusarium solani f. sp. piperis and compared with untreated plants and with healthy control plants. All samples remained photosynthetically active after infection. Chlorophyll content, chlorophyll a fluorescence, and leaf gas-exchange parameters were less affected in Si-supplemented plants as well as healthy control plants. The net carbon assimilation, stomatal conductance, associated with higher internal carbon values suggest that the lower CO2 influx in inoculated plants of Bragantina cultivar was caused by photochemical and biochemical limitations. Si-supplementation reduced the disease severity improving protection, apparently associated with the preservation of photosynthetic performance, especially for Bragantina cultivar. |
Databáze: | OpenAIRE |
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