Soil sterilization, pathogen and antagonist concentration affect biological control of Fusarium wilt of cape gooseberry by Bacillus velezensis Bs006

Velandia, Carlos Andrés Moreno; García, Luisa Fernanda Izquierdo; Ongena, Marc; Kloepper, Joseph W.; Cotes, Alba Marina

doi:10.1007/s11104-018-3866-4

Cited by 47 publications

(35 citation statements)

References 50 publications

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“…Foph management practices in cape gooseberry crops have been mainly based on the use of synthetic fungicides (Moreno-Velandia et al, 2019); however, synthetic elicitors have been used as alternatives for soilborne pathogen management in recent years (McGovern, 2015). Studies about synthetic elicitors have been focused separately on disease control (Ding et al, 2009a;Mandal et al, 2009;Mostafa et al, 2018) or their effect on abiotic stress mitigation (Csisz ar et al, 2018;Mansori et al, 2015;Rao and Dixon, 2017); however, the available literature on the use of these compounds to reduce the negative impact generated by combined stresses (pathogens and abiotic stresses) in Andean fruit trees, such as cape gooseberry, is still scarce.…”

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confidence: 99%

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Chávez-Arias¹,

Gómez-Caro²,

Restrepo-Díaz³

2020

horts

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Physalis peruviana L. crops are exposed to different stress conditions that limit their productivity. Within these conditions, abiotic stress caused by water and biotic stress by Fusarium oxysporum f. sp. physali (Foph) are frequent at commercial levels. The foliar application of synthetic elicitors can be a tool to mitigate the negative impacts of these stresses. The objective of this study was to evaluate the interaction between Foph inoculation and three foliar applications of brassinosteroids (BR), salicylic acid (SA), and a commercial elicitor based on botanical extracts (BE) of Echinacea purpurea, Potentilla erecta, and Aloe vera on the physiological [stomatal conductance (gS), leaf water potential (Ψwf), chlorophyll fluorescence, and growth] and biochemical [photosynthetic pigments, malondialdehyde (MDA) production, and proline content] responses of cape gooseberry plants subjected to a 6-day waterlogging period. The established treatments were as follows: 1) waterlogged plants without Foph; 2) waterlogged plants with Foph; 3) waterlogged, noninoculated (Foph−) plants treated foliarly with BR, SA, or BE; and 4) waterlogged, inoculated (Foph+) plants treated foliarly with BR, SA, or BE. The results showed that the foliar application of BR or SA reduced vascular wilt development in plants subjected to a hypoxia period. In addition, three applications of BR, SA, or BE favored gS, Ψwf, growth, and chlorophyll fluorescence parameters in cape gooseberry plants under the interaction between Foph and oxygen deficit in the soil. Also, higher photosynthetic pigment and proline contents were observed in plants treated with elicitors under stress combination, whereas a lower MDA production was evidenced in this group of plants. In conclusion, BR, SA, or BE can help mitigate the negative effects of the simultaneous occurrence of Foph and a waterlogging condition for 6 days in cape gooseberry plants.

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confidence: 99%

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Chávez-Arias¹,

Gómez-Caro²,

Restrepo-Díaz³

2020

horts

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“…However, the objective of this study was to evaluate options with a practical application from the agronomic and physiological points of view. Studies to find complementary alternatives to manage vascular wilt caused by Foph in Andean fruit crops have been limited to the use of fungicides and have been recently focused on biological control agents [7,8]. Therefore, our research demonstrated the potential use of BR, SA or BE for Foph control in cape gooseberry.…”

Section: Discussionmentioning

confidence: 82%

“…Young mycelium segments from the supplied strain were cultured in 50 mL of Potato Dextrose Broth (PDB; Difco TM , Becton Dickinson, Sparks, MD, USA) in 250 mL Erlenmeyer flasks. Then, segments were incubated for 7 days under constant agitation in an orbital shaker (Lab-Line, Melrose Park, IL, USA) at 125 rpm and 28 • C under dark conditions [8].…”

Section: Plant Inoculation and Resistance Elicitors Applicationmentioning

confidence: 99%

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

Chávez-Arias

Gómez-Caro

Restrepo-Díaz

2020

Plants

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Vascular wilt caused by Fusarium oxysporum is the most limiting disease that affects cape gooseberry (Physalis peruviana L.) crops in Colombia. The use of synthetic elicitors for vascular wilt management is still scarce in Andean fruit species. The objective of the present study was to evaluate the effect and number of foliar applications of synthetic elicitors such as jasmonic acid (JA), salicylic acid (SA), brassinosteroids (BR), or a commercial resistance elicitor based on botanical extracts (BE) on disease progress and their effect on the physiology of cape gooseberry plants inoculated with F. oxysporum f. sp. physali. Groups of ten plants were separately sprayed once, twice, or three times with a foliar synthetic elicitor, respectively. Elicitor applications were performed at the following concentrations: JA (10 mL L−1), SA (100 mg L−1), BR (1 mL L−1) and BE (2.5 mL of commercial product (Loker®) L−1). The results showed that three foliar BR, SA, or BE applications reduced the area under the disease progress, severity index, and vascular browning in comparison to inoculated plants without any elicitor spray. Three BR, SA, or BE sprays also favored stomatal conductance, water potential, growth (total dry weight and leaf area) and fluorescence parameters of chlorophyll compared with inoculated and untreated plants with no elicitor sprays. Three foliar sprays of SA, BR, or BE enhanced photosynthetic pigments (leaf total chlorophyll and carotenoid content) and proline synthesis and decreased oxidative stress in Foph-inoculated plants. In addition, the effectiveness of three foliar BR, SA, or BE sprays was corroborated by three-dimensional plot and biplot analysis, in which it can evidence that stomatal conductance, proline synthesis, and efficacy percentage were accurate parameters to predict Foph management. On the hand, JA showed the lowest level of amelioration of the negative effects of Foph inoculation. In conclusion, the use of the synthetic elicitors BR, SA, or BE can be considered as a tool complementary for the commercial management of vascular wilt in areas where this disease is a limiting factor.

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“…In addition, there is an increasing demand by consumers for food free of agrochemical residues and production processes that are friendlier to the environment. Because of these issues, alternatives to the use of agrochemicals, such as biological control and the application of organic additives, have gained interest recently (Moreno-Velandia et al, 2018;Pal and Gardener, 2006).…”

mentioning

confidence: 99%

“…The search for management alternatives based on biological control, particularly the application of biocontrol agents and their effect on the disease, has become very important in the cape gooseberry-F. oxysporum pathosystem in Colombia (Díaz et al, 2013;Moreno-Velandia et al, 2018). However, information on the use of products of natural origin, such as chitosan and burned rice husk, on vascular wilt and the physiological response of cape gooseberry plants is still scarce.…”

mentioning

confidence: 99%

Physiological Response of Cape Gooseberry Seedlings to Two Organic Additives and Their Mixture under Inoculation with Fusarium oxysporum f. sp. physali

Cháves-Gómez¹,

Prado²,

Gómez-Caro³

et al. 2020

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Vascular wilt caused by Fusarium oxysporum f. sp. physali is the most limiting disease in cape gooseberry crops. The use of natural products such as organic additives is a promising alternative for management of this disease. The present study sought to evaluate the physiological response of cape gooseberry plants infected with this pathogen and treated with the organic additives chitosan, burned rice husks, or their mixture. The test was conducted under greenhouse conditions and soil was inoculated with F. oxysporum f. sp. physali strain Map5. Chitosan was applied to seeds and seedlings at the time of transplantation, whereas burned rice husk was incorporated into the soil in a 1:3 ratio. Plants inoculated and not inoculated with the pathogen were used as controls. The following variables were evaluated: area under the disease progress curve (AUDPC), leaf water potential, stomatal conductance (gS), leaf area (LA), dry matter accumulation, photosynthetic pigment contents, proline synthesis, and lipid peroxidation estimation [malondialdehyde (MDA)]. The results showed that cape gooseberry plants with vascular wilt and treated with chitosan had higher gS, leaf water potential, LA, dry matter accumulation, and proline content values. In addition, the levels of vascular wilt severity decreased in comparison with pathogen-inoculated controls. The results suggest that chitosan applications on cape gooseberry plants may be considered as an alternative in the integrated management of the disease in producing areas, because they can mitigate the negative effect of the pathogen on plant physiology.

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Soil sterilization, pathogen and antagonist concentration affect biological control of Fusarium wilt of cape gooseberry by Bacillus velezensis Bs006

Cited by 47 publications

References 50 publications

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

Physiological Response of Cape Gooseberry Seedlings to Two Organic Additives and Their Mixture under Inoculation with Fusarium oxysporum f. sp. physali

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