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Madany MMY, Zinta G, Abuelsoud W, Hozzein WN, Selim S, Asard H, Elgawad HA. Hormonal seed-priming improves tomato resistance against broomrape infection. J Plant Physiol 2020; 250:153184. [PMID: 32464590 DOI: 10.1016/j.jplph.2020.153184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 04/23/2020] [Accepted: 04/29/2020] [Indexed: 05/08/2023]
Abstract
Although it is well known that parasitic weeds such as Orobanche (broomrape) significantly reduce the yield of economically important crops, their infection-induced oxidative changes need more exploration in their host plants. Moreover, applying an eco-friendly approach to minimize the infection is not yet available. This study was conducted to understand the effect of Orobanche ramosa infection on oxidative and redox status of tomato plants and the impact of hormonal (indole acetic acid (IAA); 0.09 mM and salicylic acid (SA); 1.0 mM) seed-priming upon mitigating the infection threats. Although Orobanche invades tomato roots, its inhibitory effects on shoot biomass were also indicted. Orobanche infection usually induces oxidative damage i.e., high lipid peroxidation, lipoxygenase activity and H2O2 levels, particularly for roots. Interestingly, hormonal seed-priming significantly enhanced tomato shoots and roots growth under both healthy and infected conditions. Also, IAA and SA treatment significantly reduced Orobanche infection-induced oxidative damage. The protective effect of seed-priming was explained by increasing the antioxidant defense markers including the antioxidant metabolites (i.e., total antioxidant capacity, carotenoids, phenolics, flavonoids, ASC, GSH, tocopherols) and enzymes (CAT, POX, GPX, SOD, GR, APX, MDHAR, DHAR), particularly in infected tomato seedlings. Additionally, cluster analysis indicated the differential impact of IAA- and SA-seed-priming, whereas lower oxidative damage and higher antioxidant enzymes' activities in tomato root were particularly reported for IAA treatment. The principal component analysis (PCA) also proclaimed an organ specificity depending on their response to Orobanche infection. Collectively, here and for the first time, we shed the light on the potential of seed-priming with either IAA or SA to mitigate the adverse effect of O. ramosa stress in tomato plants, especially at oxidative stress levels.
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Affiliation(s)
- Mahmoud M Y Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt.
| | - Gaurav Zinta
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Centre of Excellence Plant and Vegetation Ecology, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Walid Abuelsoud
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Wael N Hozzein
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Samy Selim
- Botany Department, Faculty of Science, Suez Canal University, Ismailia, P.O. 41522, Egypt
| | - Han Asard
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Hamada Abd Elgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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Zwanenburg B, Mwakaboko AS, Kannan C. Suicidal germination for parasitic weed control. Pest Manag Sci 2016; 72:2016-2025. [PMID: 26733056 DOI: 10.1002/ps.4222] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 12/22/2015] [Accepted: 01/04/2016] [Indexed: 05/10/2023]
Abstract
Parasitic weeds of the genera Striga and Orobanche spp. cause severe yield losses in agriculture, especially in developing countries and the Mediterranean. Seeds of these weeds germinate by a chemical signal exuded by the roots of host plants. The radicle thus produced attaches to the root of the host plant, which can then supply nutrients to the parasite. There is an urgent need to control these weeds to ensure better agricultural production. The naturally occurring chemical signals are strigolactones (SLs), e.g. strigol and orobanchol. One option to control these weeds involves the use of SLs as suicidal germination agents, where germination takes place in the absence of a host. Owing to the lack of nutrients, the germinated seeds will die. The structure of natural SLs is too complex to allow multigram synthesis. Therefore, SL analogues are developed for this purpose. Examples are GR24 and Nijmegen-1. In this paper, the SL analogues Nijmegen-1 and Nijmegen-1 Me were applied in the field as suicidal germination agents. Both SL analogues were formulated using an appropriate EC-approved emulsifier (polyoxyethylene sorbitol hexaoleate) and applied to tobacco (Nicotiana tabacum L.) fields infested by Orobanche ramosa L. (hemp broomrape), following a strict protocol. Four out of 12 trials showed a reduction in broomrape of ≥95%, two trials were negative, two showed a moderate result, one was unclear and in three cases there was no Orobanche problem in the year of the trials. The trial plots were ca 2000 m2 ; half of that area was treated with stimulant emulsion, the other half was not treated. The optimal amount of stimulant was 6.25 g ha-1 . A preconditioning prior to the treatment was a prerequisite for a successful trial. In conclusion, the suicidal germination approach to reducing O. ramosa in tobacco fields using formulated SL analogues was successful. Two other options for weed control are discussed: deactivation of stimulants prior to action and biocontrol by Fusarium oxysporum. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Binne Zwanenburg
- Cluster of Organic Chemistry, Huygens Building, Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525, AJ, Nijmegen, The Netherlands.
| | - Alinanuswe S Mwakaboko
- Cluster of Organic Chemistry, Huygens Building, Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525, AJ, Nijmegen, The Netherlands
- Department of Chemistry, University of Dar es Salaam, Dar es Salaam, Tanzania
| | - Chinnaswamy Kannan
- Cluster of Organic Chemistry, Huygens Building, Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525, AJ, Nijmegen, The Netherlands
- ICAR - Indian Institute of Rice Research, Indian Council of Agricultural Research, Ministery of Agriculture, Government of India, Rajendra Nagar, Hydrabad, India
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El-Maarouf-Bouteau H, Moreau E, Errakhi R, Sallé G. A diffusible signal from germinating Orobanche ramosa elicits early defense responses in suspension-cultured Arabidopsis thaliana. Plant Signal Behav 2008; 3:189-93. [PMID: 19513214 PMCID: PMC2634113 DOI: 10.4161/psb.3.3.5545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Accepted: 01/08/2008] [Indexed: 05/10/2023]
Abstract
In plant/parasitic plant interaction, little is known about the host plant response before the establishment of the parasite within the host. In the present work, we focused on host responses to parasitic plant, O. ramosa in the early stage of infection. We used a co-culture system of A. thaliana suspension cells and O. ramosa germinated-seeds to avoid parasite attachment. We showed that O. ramosa induced H(2)O(2) generation and camalexin synthesis by A. thaliana followed by a drastic increase in cell death. We further demonstrated that a heat sensitive diffusible signal is responsible for this cell death. These data indicate that recognition of O. ramosa occurs before the attachment of the parasite and initiates plant defence responses.
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Affiliation(s)
- Hayat El-Maarouf-Bouteau
- Laboratoire de Parasitologie Végétale (EA3495); Ivry sur Seine, France
- Laboratoire de Physiologie Végétale Appliquée (EA2388); Ivry sur Seine, France
| | - Elisabeth Moreau
- Laboratoire de Parasitologie Végétale (EA3495); Ivry sur Seine, France
| | - Rafik Errakhi
- Laboratoire de Parasitologie Végétale (EA3495); Ivry sur Seine, France
| | - Georges Sallé
- Laboratoire de Parasitologie Végétale (EA3495); Ivry sur Seine, France
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