Abstract
Cape gooseberry has coped with abiotic and biotic stresses such as prolonged waterlogging periods and vascular wilt in recent years. The aim of this study was to evaluate the influence of four waterlogging periods on stomatal conductance (gs), leaf water potential (Ψwf), plant growth, leaf photosynthetic pigments, malondialdehyde (MDA) production, proline content and chlorophyll fluorescence parameters in cape gooseberry plants infected with Fusarium oxysporum f. sp. physali (Foph). Two-month-old ecotype “Colombia” plants were arranged in a completely randomized factorial design in eight treatments: plants without waterlogging (control), plants with waterlogging for 4, 6 and 8 d with and without Foph, respectively. The area under the disease progress curve was higher in inoculated plants subjected to 6 and 8 d of waterlogging (55.25 and 64.25) compared to inoculated plants but without waterlogging (45.25). The results also showed a lower plant growth, gs, Ψwf, leaf photosynthetic pigments and chlorophyll fluorescence parameters (Fv/Fm, electron transport rate (ETR), Y (II) and qP) as waterlogging periods in plants with Foph increased. However, this group of plants showed a greater proline and malondialdehyde (MDA) accumulation and a higher NPQ. In conclusion, cape gooseberry shows a low acclimation to waterlogging conditions of more than 6 d in soils with Foph.
Highlights
Cape gooseberry (Physalis peruviana L.) belongs to the Solanaceae family and is native to theSouth American Andean region [1]
Physali (Foph) inoculation and their interaction on the leaf photosynthetic pigments, malondialdehyde and proline content at 53 days after inoculation (DAI) is summarized in and proline of cape gooseberry plants infected with Fusarium oxysporum f. sp. physali (Foph) at 53 DAI
This study revealed that cape gooseberry plants are susceptible to waterlogging periods of over 6 d, which favor the severity of vascular wilt caused by Fusarium oxysporum physali (Foph)
Summary
Cape gooseberry (Physalis peruviana L.) belongs to the Solanaceae family and is native to theSouth American Andean region [1]. The cape gooseberry fruit has gained economic importance due to its nutritional properties as a source of vitamins A and C [2]. Cape gooseberry is the second most exported fruit in the country, being Colombia one of the main world producers [4]. Cape gooseberry productivity in Colombia has been significantly affected by abiotic and biotic factors in the soil such as oxygen deficiency (waterlogging) and the presence of pathogens [5,6]. Andean fruit trees (cape gooseberry, tamarillo and lulo) have been significantly affected by climate variability phenomena (ENSO), increasing the intensity and frequency of rainfall which generates prolonged waterlogging episodes [5,9,10]
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