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Ni X, Li S, Yuan Y, Chang R, Liu Q, Liu Z, Li Z, Wang Y. Effect of siaD on Ag-8 to improve resistance to crown gall in grapes and related mechanisms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:108869. [PMID: 39142011 DOI: 10.1016/j.plaphy.2024.108869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 08/16/2024]
Abstract
Crown gall caused by Agrobacterium vitis (A. vitis) is one of the crucial issues restricting the to grape industry. In this study, Agrobacterium tumefaciens (Ag-8) was separated from the soil that could prevent the occurrence of grape crown gall. By the mutagenesis of Ag-8 transposon, the siaD gene deletion strain (ΔsiaD) showed significantly lower efficacy in grape and tomato plants for controlling grape crown gall, but the relevant mechanism was not clear. The biofilm formation and motility of ΔsiaD were significantly decreased, and the colonization ability of ΔsiaD in tomato roots was significantly reduced. RNA-seq analysis showed that the expression of nemR significantly reduced in the ΔsiaD and that the expression of nemR showed a high correlation with biofilm and motility. Further studies showed that the nemR gene deletion strain of Ag-8 (ΔnemR) showed significantly reduced motility, biofilm formation and control of grape crown gall compared to Ag-8, and the nemR gene complementary strain of Ag-8 (ΔnemR-comp) recovered to Ag-8 wild-type levels. The inoculation experiments of preventive, curative or simultaneous treatment further showed that the preferential inoculation with Ag-8 reduced the incidence of grape crown gall on tomato plants, and studies showed that the mutation of siaD affected the site competition between Ag-8 and A. vitis, and that the mutation of nemR was consistent with the previous results. This study provides a new strategy for the prevention and control of grape crown gall, which is of great significance to the grape industry to increase production and income.
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Affiliation(s)
- Xuemei Ni
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China
| | - Shiyu Li
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China
| | - Yujin Yuan
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China
| | - Ruokui Chang
- Tianjin Agricultural University, College of Engineering and Technology Architecture, Tianjin, 300394, China
| | - Quanyong Liu
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China
| | - Zhenxing Liu
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China
| | - Zhuoran Li
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China.
| | - Yuanhong Wang
- Tianjin Agricultural University, College of Horticulture and Landscape Architecture, Tianjin, 300394, China.
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2
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Sivaprakasam N, Vaithiyanathan S, Gandhi K, Narayanan S, Kavitha PS, Rajasekaran R, Muthurajan R. Metagenomics approaches in unveiling the dynamics of Plant Growth-Promoting Microorganisms (PGPM) vis-à-vis Phytophthora sp. suppression in various crop ecological systems. Res Microbiol 2024; 175:104217. [PMID: 38857835 DOI: 10.1016/j.resmic.2024.104217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/02/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Phytophthora species are destructive pathogens causing yield losses in different ecological systems, such as potato, black pepper, pepper, avocado, citrus, and tobacco. The diversity of plant growth-promoting microorganisms (PGPM) plays a crucial role in disease suppression. Knowledge of metagenomics approaches is essential for assessing the dynamics of PGPM and Phytophthora species across various ecosystems, facilitating effective management strategies for better crop protection. This review discusses the dynamic interplay between PGPM and Phytophthora sp. using metagenomics approaches that sheds light on the potential of PGPM strains tailored to specific crop ecosystems to bolster pathogen suppressiveness.
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Affiliation(s)
- Navarasu Sivaprakasam
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | | | - Karthikeyan Gandhi
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - Swarnakumari Narayanan
- Department of Nematology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - P S Kavitha
- School of Post Graduate Studies, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - Raghu Rajasekaran
- Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - Raveendran Muthurajan
- Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
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3
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González-Gutiérrez KN, Ragazzo-Sánchez JA, Calderón-Santoyo M. Field and postharvest application of microencapsulated Yamadazyma mexicana LPa14: anthracnose control and effect on postharvest quality in avocado (Persea americana Mill. cv. Hass). PEST MANAGEMENT SCIENCE 2024; 80:3459-3469. [PMID: 38415946 DOI: 10.1002/ps.8052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/28/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Anthracnose caused by species of Colletotrichum is the most important disease of avocado fruit. The quiescent infection develops in the field, hence, its control from the preharvest stage is necessary. The field application of microencapsulated Yamadazyma mexicana LPa14 could prevent the establishment of Colletotrichum gloeosporioides and reduce the losses in avocado production. This study aimed to evaluate the effectiveness of microencapsulated Y. mexicana applied in the field and postharvest for the anthracnose control in avocado, to evaluate the population dynamics of Y. mexicana in flowers and fruits and the effect of the yeast on the avocado quality. RESULTS The concentrations of microencapsulated Y. mexicana after field application ranged from 4.58 to 6.35 log CFU g-1. The population of microencapsulated yeast in flowers and fruits was always higher than treatments with fresh cells. Preharvest application of fresh and microencapsulated Y. mexicana significantly reduced the severity of anthracnose by 71-80% and 84-96%, respectively, in avocado fruits stored at 25 °C. Moreover, at 6 °C and ripening at 25 °C, the fresh yeast reduced the severity by 87-90% and the microencapsulated yeast by 91-93%. However, yeast treatments applied in the field + postharvest under cool conditions were more effective in reducing 100% of anthracnose. Treatments did not negatively affect the quality parameters of the avocado fruits. CONCLUSION Yamadazyma mexicana microencapsulated by electrospraying is a promising bioformulation for the management of anthracnose in avocados at preharvest and postharvest levels. Yamadazyma mexicana offers a new biological control solution for growers in avocado orchards. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Katia Nayely González-Gutiérrez
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México/Instituto Tecnológico de Tepic, Tepic, Mexico
| | - Juan Arturo Ragazzo-Sánchez
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México/Instituto Tecnológico de Tepic, Tepic, Mexico
| | - Montserrat Calderón-Santoyo
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México/Instituto Tecnológico de Tepic, Tepic, Mexico
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4
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Zhang X, Yang Q, Solairaj D, Sallam NMA, Zhu M, You S, Zhang H. Volatile Organic Compounds of Wickerhamomyces anomalus Prevent Postharvest Black Spot Disease in Tomato. Foods 2024; 13:1949. [PMID: 38928889 PMCID: PMC11202777 DOI: 10.3390/foods13121949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/12/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024] Open
Abstract
Postharvest diseases, such as black spots caused by Alternaria alternata, have caused huge economic losses to the tomato industry and seriously restricted its development. In recent years, biological control has become a new method to control postharvest diseases of fruits and vegetables. Our research group screened W. anomalus, a yeast demonstrating a promising control effect on a postharvest black spot disease of tomatoes, and explored its physiological mechanism of prevention and control. Therefore, this study investigated the prevention and control effect of metabolites of W. anomalus on tomato black spot disease and the inhibition effect of main components on A. alternata. A GC-MS analysis found that isoamyl acetate was the main component of W. anomalus that played an inhibitory role. The results showed that isoamyl acetate could inhibit the growth of A. alternata and had a certain control effect on postharvest black spots in tomatoes. Our findings suggest that isoamyl acetate could be a promising alternative to fungicides for controlling postharvest black spots in tomatoes.
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Affiliation(s)
- Xi Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
| | - Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
| | - Dhanasekaran Solairaj
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
| | - Nashwa M. A. Sallam
- Department of Plant Pathology, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt;
| | - Marui Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
| | - Shengyu You
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (X.Z.); (Q.Y.); (D.S.); (M.Z.); (S.Y.)
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Khamsuk K, Dell B, Pathom-aree W, Pathaichindachote W, Suphrom N, Nakaew N, Jumpathong J. Screening Plant Growth-Promoting Bacteria with Antimicrobial Properties for Upland Rice. J Microbiol Biotechnol 2024; 34:1029-1039. [PMID: 38563101 PMCID: PMC11180919 DOI: 10.4014/jmb.2402.02008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/11/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024]
Abstract
This study explores beneficial bacteria isolated from the roots and rhizosphere soil of Khao Rai Leum Pua Phetchabun rice plants. A total of 315 bacterial isolates (KK001 to KK315) were obtained. Plant growth-promoting traits (phosphate solubilization and indole-3-acetic acid (IAA) production), and antimicrobial activity against three rice pathogens (Curvularia lunata NUF001, Bipolaris oryzae 2464, and Xanthomonas oryzae pv. oryzae) were assessed. KK074 was the most prolific in IAA production, generating 362.6 ± 28.0 μg/ml, and KK007 excelled in tricalcium phosphate solubilization, achieving 714.2 ± 12.1 μg/ml. In antimicrobial assays using the dual culture method, KK024 and KK281 exhibited strong inhibitory activity against C. lunata, and KK269 was particularly effective against B. oryzae. In the evaluation of antimicrobial metabolite production, KK281 and KK288 exhibited strong antifungal activities in cell-free supernatants. Given the superior performance of KK281, taxonomically identified as Bacillus sp. KK281, it was investigated further. Lipopeptide extracts from KK281 had significant antimicrobial activity against C. lunata and a minimum inhibitory concentration (MIC) of 3.1 mg/ml against X. oryzae pv. oryzae. LC-ESI-MS/MS analysis revealed the presence of surfactin in the lipopeptide extract. The crude extract was non-cytotoxic to the L-929 cell line at tested concentrations. In conclusion, the in vitro plant growth-promoting and disease-controlling attributes of Bacillus sp. KK281 make it a strong candidate for field evaluation to boost plant growth and manage disease in upland rice.
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Affiliation(s)
- Khammool Khamsuk
- Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
| | - Bernard Dell
- Centre for Crop and Food Innovation, Murdoch University, 90 South St., Murdoch WA, 6150 Australia
| | - Wasu Pathom-aree
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Wanwarang Pathaichindachote
- Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
- Center of Excellence in Research for Agricultural Biotechnology, Naresuan University, Phitsanulok 65000, Thailand
| | - Nungruthai Suphrom
- Center of Excellence in Biomaterials, Naresuan University, Phitsanulok 65000, Thailand
- Department of Chemistry, Faculty of Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok 65000, Thailand
| | - Nareeluk Nakaew
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok 65000, Thailand
- Centre of Excellence in Fungal Research, Naresuan University, Phitsanulok 65000, Thailand
| | - Juangjun Jumpathong
- Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok 65000, Thailand
- Centre of Excellence in Fungal Research, Naresuan University, Phitsanulok 65000, Thailand
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6
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He Y, Degraeve P, Oulahal N. Bioprotective yeasts: Potential to limit postharvest spoilage and to extend shelf life or improve microbial safety of processed foods. Heliyon 2024; 10:e24929. [PMID: 38318029 PMCID: PMC10839994 DOI: 10.1016/j.heliyon.2024.e24929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
Yeasts are a widespread group of microorganisms that are receiving increasing attention from scientists and industry. Their diverse biological activities and broad-spectrum antifungal activity make them promising candidates for application, especially in postharvest biocontrol of fruits and vegetables and food biopreservation. The present review focuses on recent knowledge of the mechanisms by which yeasts inhibit pathogenic fungi and/or spoilage fungi and bacteria. The main mechanisms of action of bioprotective yeasts include competition for nutrients and space, synthesis and secretion of antibacterial compounds, mycoparasitism and the secretion of lytic enzymes, biofilm formation, quorum sensing, induced systemic resistance of fruit host, as well as the production of reactive oxygen species. Preadaptation of yeasts to abiotic stresses such as cold acclimatization and sublethal oxidative stress can improve the effectiveness of antagonistic yeasts and thus more effectively play biocontrol roles under a wider range of environmental conditions, thereby reducing economic losses. Combined application with other antimicrobial substances can effectively improve the efficacy of yeasts as biocontrol agents. Yeasts show great potential as substitute for chemical additives in various food fields, but their commercialization is still limited. Hence, additional investigation is required to explore the prospective advancements of yeasts in the field of biopreservation for food.
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Affiliation(s)
- Yan He
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
| | - Pascal Degraeve
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
| | - Nadia Oulahal
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
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7
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Agirman B, Carsanba E, Settanni L, Erten H. Exploring yeast-based microbial interactions: The next frontier in postharvest biocontrol. Yeast 2023; 40:457-475. [PMID: 37653692 DOI: 10.1002/yea.3895] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 08/13/2023] [Accepted: 08/17/2023] [Indexed: 09/02/2023] Open
Abstract
Fresh fruits and vegetables are susceptible to a large variety of spoilage agents before and after harvest. Among these, fungi are mostly responsible for the microbiological deteriorations that lead to economically significant losses of fresh produce. Today, synthetic fungicides represent the first approach for controlling postharvest spoilage in fruits and vegetables worldwide. However, the emergence of fungicide-resistant pathogen biotypes and the increasing awareness of consumers toward the health implications of hazardous chemicals imposed an urgent need to reduce the use of synthetic fungicides in the food supply; this phenomenon strengthened the search for alternative biocontrol strategies that are more effective, safer, nontoxic, low-residue, environment friendly, and cost-effective. In the last decade, biocontrol with antagonistic yeasts became a promising strategy to reduce chemical compounds during fruit and vegetable postharvest, and several yeast-based biocontrol products have been commercialized. Biocontrol is a multipartite system that includes different microbial groups (spoilage mold, yeast, bacteria, and nonspoilage resident microorganisms), host fruit, vegetables, or plants, and the environment. The majority of biocontrol studies focused on yeast-mold mechanisms, with little consideration for yeast-bacteria and yeast-yeast interactions. The current review focused mainly on the unexplored yeast-based interactions and the mechanisms of actions in biocontrol systems as well as on the importance and advantages of using yeasts as biocontrol agents, improving antagonist efficiency, the commercialization process and associated challenges, and future perspectives.
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Affiliation(s)
- Bilal Agirman
- Department of Food Engineering, Faculty of Engineering, Cukurova University, Adana, Turkey
| | - Erdem Carsanba
- Centro de Biotecnologia e Química Fina (CBQF), Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Luca Settanni
- Department of Agricultural, Food and Forestry Science, University of Palermo, Palermo, Italy
| | - Huseyin Erten
- Department of Food Engineering, Faculty of Engineering, Cukurova University, Adana, Turkey
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8
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Zhao J, Wang Y, Liu Q, Liu S, Pan H, Cheng Y, Long C. The GRAS Salts of Na 2SiO 3 and EDTA-Na 2 Control Citrus Postharvest Pathogens by Disrupting the Cell Membrane. Foods 2023; 12:2368. [PMID: 37372585 DOI: 10.3390/foods12122368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/28/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Sodium silicate (Na2SiO3) and ethylenediaminetetraacetic acid disodium salt (EDTA-Na2) are inorganic salts classified as 'Generally Recognized as Safe' (GRAS) compounds with great advantages in controlling various pathogens of postharvest fruits and vegetables. Here, we determined the median effective concentration (EC50) of Na2SiO3 (0.06%, 0.05%, 0.07% and 0.08%) and EDTA-Na2 (0.11%, 0.08%, 0.5%, and 0.07%) against common pathogens affecting postharvest citrus fruit, including Penicillium digitatum, Penicillium italicum, Geotrichum citri-aurantii, and Colletotrichum gloeosporioides. Na2SiO3 and EDTA-Na2 treatments at the EC50 decreased the spore germination rate, visibly disrupted the spore cell membrane integrity, and significantly increased the lipid droplets (LDs) of the four postharvest pathogens. Moreover, both treatments at EC50 significantly reduced the disease incidence of P. italicum (by 60% and 93.335, respectively) and G. citri-aurantii (by 50% and 76.67%, respectively) relative to the control. Furthermore, Na2SiO3 and EDTA-Na2 treatment resulted in dramatically lower disease severity of the four pathogens, while also demonstrating no significant change in citrus fruit quality compared with the control. Therefore, Na2SiO3 and EDTA-Na2 present a promising approach to control the postharvest diseases of citrus fruit.
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Affiliation(s)
- Juan Zhao
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuqing Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Qianyi Liu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Shuqi Liu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Pan
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Yunjiang Cheng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
| | - Chaoan Long
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, National R&D Center for Citrus Preservation, National Centre of Citrus Breeding, Huazhong Agricultural University, Wuhan 430070, China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan 430070, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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9
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Deng Q, Lei X, Zhang H, Deng L, Yi L, Zeng K. Phenylalanine Promotes Biofilm Formation of Meyerozyma caribbica to Improve Biocontrol Efficacy against Jujube Black Spot Rot. J Fungi (Basel) 2022; 8:jof8121313. [PMID: 36547646 PMCID: PMC9786301 DOI: 10.3390/jof8121313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
During storage and transportation after harvest, the jujube fruit is susceptible to black spot rot, which is caused by Alternaria alternata. The present study aimed to evaluate the effectiveness of the yeast Meyerozyma caribbica in controlling A. alternata in postharvest jujube fruits, and to explore the biofilm formation mechanism. The results showed that M. caribbica treatment significantly reduced the A. alternata decay in jujube fruits. M. caribbica could rapidly colonize jujube fruit wounds, adhering tightly to hyphae of A. alternata, and accompanied by the production of extracellular secretions. In in vitro experiments, we identified that M. caribbica adhered to polystyrene plates, indicating a strong biofilm-forming ability. Furthermore, we demonstrated that M. caribbica can secrete phenylethanol, a quorum sensing molecule which can affect biofilm development. Phenylalanine (a precursor substance for phenylethanol synthesis) enhanced the secretion of phenylethanol and promoted the formation of M. caribbica biofilms. Meanwhile, phenylalanine enhanced the biological control performance of M. caribbica against jujube black spot rot. Our study provided new insights that enhance the biological control performance of antagonistic yeast.
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Affiliation(s)
- Qian Deng
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Xingmeng Lei
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Hongyan Zhang
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Lili Deng
- College of Food Science, Southwest University, Chongqing 400715, China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China
| | - Lanhua Yi
- College of Food Science, Southwest University, Chongqing 400715, China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing 400715, China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Correspondence:
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10
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Sun Y, Li Y, Xu Y, Sang Y, Mei S, Xu C, Yu X, Pan T, Cheng C, Zhang J, Jiang Y, Gao Z. The Effects of Storage Temperature, Light Illumination, and Low-Temperature Plasma on Fruit Rot and Change in Quality of Postharvest Gannan Navel Oranges. Foods 2022; 11:foods11223707. [PMID: 36429299 PMCID: PMC9689076 DOI: 10.3390/foods11223707] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/10/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
Gannan navel orange (Citrus sinensis Osbeck cv. Newhall) is an economically important fruit, but postharvest loss occurs easily during storage. In this study, the effects of different temperatures, light illuminations, and low-temperature plasma treatments on the water loss and quality of the Gannan navel orange were investigated. The fruit began to rot after 90 d of storage at 5 °C and 20-45 d at 26 °C. Navel oranges stored at 26 °C had 7.2-fold and 3.1-fold higher rates of water loss at the early and late storage stages, respectively, as compared with those stored at 5 °C. Storage at 5 °C decreased the contents of total soluble solids at the early storage stage and the contents of titratable acids at the late storage stage, whereas storage at 26 °C decreased the contents of total soluble solids at the late storage stage and the contents of titratable acids at the early storage stage, respectively. Application of low-temperature plasma produced by air ionization for 6 min, or continuous blue or red light illumination significantly inhibited water loss within 7 and 21 d of storage at 22 °C, respectively, but exhibited no significant effect on fruit quality. Furthermore, the low-temperature plasma treatment protected against fruit rot. Thus, treatment with low-temperature plasma followed by storage at a low temperature under continuous red or blue light illumination was of potential value as a green technology for preserving Gannan navel orange during storage.
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Affiliation(s)
- Ying Sun
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Yuanyuan Li
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Yu Xu
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Yali Sang
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Siyi Mei
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Chaobin Xu
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Xingguo Yu
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Taoyu Pan
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Chen Cheng
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Jun Zhang
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
| | - Yueming Jiang
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- Correspondence: (Y.J.); (Z.G.)
| | - Zhiqiang Gao
- College of Life Sciences, Gannan Normal University, Ganzhou 341000, China
- Correspondence: (Y.J.); (Z.G.)
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11
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Wang Y, Zheng Y, Shang J, Wu D, Zhou A, Cai M, Gao H, Yang K. Pulsed light reduces postharvest losses of Chinese bayberries by affecting fungal microbiota during cold storage. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Hammami R, Oueslati M, Smiri M, Nefzi S, Ruissi M, Comitini F, Romanazzi G, Cacciola SO, Sadfi Zouaoui N. Epiphytic Yeasts and Bacteria as Candidate Biocontrol Agents of Green and Blue Molds of Citrus Fruits. J Fungi (Basel) 2022; 8:jof8080818. [PMID: 36012806 PMCID: PMC9410262 DOI: 10.3390/jof8080818] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 11/18/2022] Open
Abstract
Overall, 180 yeasts and bacteria isolated from the peel of citrus fruits were screened for their in vitro antagonistic activity against Penicillium digitatum and P. italicum, causative agents of green and blue mold of citrus fruits, respectively. Two yeast and three bacterial isolates were selected for their inhibitory activity on mycelium growth. Based on the phylogenetic analysis of 16S rDNA and ITS rDNA sequences, the yeast isolates were identified as Candida oleophila and Debaryomyces hansenii while the bacterial isolates were identified as Bacillus amyloliquefaciens, B. pumilus and B. subtilis. All five selected isolates significantly reduced the incidence of decay incited by P. digitatum and P. italicum on ‘Valencia’ orange and ‘Eureka’ lemon fruits. Moreover, they were effective in preventing natural infections of green and blue mold of fruits stored at 4 °C. Treatments with antagonistic yeasts and bacteria did not negatively affect the quality and shelf life of fruits. The antagonistic efficacy of the five isolates depended on multiple modes of action, including the ability to form biofilms and produce antifungal lipopeptides, lytic enzymes and volatile compounds. The selected isolates are promising as biocontrol agents of postharvest green and blue molds of citrus fruits.
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Affiliation(s)
- Rania Hammami
- Laboratoire de Mycologie, Pathologies et Biomarqueurs (LR16ES05), Département de Biologie, Université de Tunis-El Manar, Tunis 2092, Tunisia; (R.H.); (M.O.); (M.S.); (S.N.)
| | - Maroua Oueslati
- Laboratoire de Mycologie, Pathologies et Biomarqueurs (LR16ES05), Département de Biologie, Université de Tunis-El Manar, Tunis 2092, Tunisia; (R.H.); (M.O.); (M.S.); (S.N.)
| | - Marwa Smiri
- Laboratoire de Mycologie, Pathologies et Biomarqueurs (LR16ES05), Département de Biologie, Université de Tunis-El Manar, Tunis 2092, Tunisia; (R.H.); (M.O.); (M.S.); (S.N.)
| | - Souhaila Nefzi
- Laboratoire de Mycologie, Pathologies et Biomarqueurs (LR16ES05), Département de Biologie, Université de Tunis-El Manar, Tunis 2092, Tunisia; (R.H.); (M.O.); (M.S.); (S.N.)
| | - Mustapha Ruissi
- Laboratoire de Biotechnologie Appliquée à l’Agriculture, INRA Tunisie, Université de Carthage, Ariana 2049, Tunisia;
| | - Francesca Comitini
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy;
| | - Gianfranco Romanazzi
- Plant Pathology, Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy;
| | - Santa Olga Cacciola
- Plant Pathology, Department of Agriculture, Food and Environment, University of Catania, V.S. Sofia, 100-95123 Catania, Italy;
| | - Najla Sadfi Zouaoui
- Laboratoire de Mycologie, Pathologies et Biomarqueurs (LR16ES05), Département de Biologie, Université de Tunis-El Manar, Tunis 2092, Tunisia; (R.H.); (M.O.); (M.S.); (S.N.)
- Correspondence:
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13
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Shruthi B, Deepa N, Somashekaraiah R, Adithi G, Divyashree S, Sreenivasa MY. Exploring biotechnological and functional characteristics of probiotic yeasts: A review. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2022; 34:e00716. [PMID: 35257004 PMCID: PMC8897636 DOI: 10.1016/j.btre.2022.e00716] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/11/2022] [Accepted: 02/27/2022] [Indexed: 01/17/2023]
Abstract
In this review, the probiotic attributes of yeasts other than Saccharomyces boulardii and the various applications of probiotic yeast in biotechnology have been explored. This review comprises of the probiotic attributes, antagonistic activity against pathogens, plant growth promoting attributes, industrial application and their biotherapeutic potentials. Advanced and additional studies on non-Saccharomyces yeasts are necessary prior to administer these yeasts as potential probiotics for health and wellbeing.
Probiotics are vital and beneficial organisms which offers the health benefits to the host organisms. The fungal probiotic field is one of the developing fields nowadays. Yeast has an enormous and diverse group of microorganisms that is attracting and expanding the attention from researchers and industries. Saccharomyces boulardii, the only patented strain belonging to yeast genera for the human use, has been broadly evaluated for its probiotic effect. Yeasts belonging to the genera Debaryomyces, Pichia, Yarrowia, Meyerozyma, Kluyveromyces etc.., have attained more interest because of their beneficial and probable probiotic features. These yeast probiotics produce VOCs (Volatile organic compounds), mycocins and antimicrobials which shows the antagonistic effect against pathogenic fungi and bacteria. Additionally, those yeasts have been recorded as good plant growth promoting microorganisms. Yeast has an important role in environmental applications such as bioremediation and removal of metals like chromium, mercury, lead etc., from waste water. Probiotic yeasts with their promising antimicrobial, antioxidant, anticancer properties, cholesterol assimilation and immunomodulatory effects can also be utilized as biotherapeutics. In this review article we have made an attempt to address important yeast probiotic attributes.
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Influence of Marine Yeast Debaryomyces hansenii on Antifungal and Physicochemical Properties of Chitosan-Based Films. J Fungi (Basel) 2022; 8:jof8040369. [PMID: 35448600 PMCID: PMC9029259 DOI: 10.3390/jof8040369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/25/2022] [Accepted: 04/01/2022] [Indexed: 01/28/2023] Open
Abstract
Chitosan-based film with and without antagonistic yeast was prepared and its effect against Penicillium italicum was evaluated. The biocompatibility of yeast cells in the developed films was assessed in terms of population dynamics. Furthermore, the impact on physicochemical properties of the prepared films with and without yeast cells incorporated were evaluated in terms of thickness, mechanical properties, color and opacity. Chitosan films with the antagonistic yeast entrapped exhibited strong antifungal activity by inhibiting the mycelial development (55%), germination (45%) and reducing the sporulation process (87%). Chitosan matrix at 0.5% and 1.0% was maintained over 9 days of cell viability. However, at 1.5% of chitosan the population dynamics was strongly affected. The addition of yeast cells only impacted color values such as a*, b*, chroma and hue angle when 1.0% of chitosan concentration was used. Conversely, luminosity was not affected in the presence of yeast cells as well as the opacity. Besides, the addition of antagonistic yeast improved the mechanical resistance of the films. The addition of D. hansenii in chitosan films improve their efficacy for controlling P. italicum, and besides showed desirable characteristics for future use as packaging for citrus products.
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Kuznetsova TA, Vecherskii MV, Khayrullin DR, Stepankov AA, Maximova IA, Kachalkin AV, Ushakova NA. Dramatic effect of black soldier fly larvae on fungal community in a compost. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2598-2603. [PMID: 34687463 DOI: 10.1002/jsfa.11601] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/17/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Black soldier fly larvae (BSFL) offer very good prospects for the production of cheap and high-quality dietary protein. This insect is able to consume low-quality substrates, including food waste. The properties and safety of the compost obtained are largely determined by its microbiome. However, while the bacterial component of the BSFL-compost microbiome has been much studied, little is known about its fungal component. In plant-based rearing substrates both the biomass and the metabolic activity of fungi often exceed the biomass and the activity of prokaryotes. So, the purpose of this study was to investigate the fungal community of the compost produced by BSF larvae reared on a food waste substrate. RESULTS Community structure was determined by metabarcoding of the ITS (internal transcribed spacer) region. Species composition and abundance were determined using the plating technique and subsequent identification of the isolated pure cultures. It was found that the primary mycobiome of the food waste substrate that was used consisted of 19 families, represented mainly by phytopathogenic and endophytic genera. Larva incubation led to the complete elimination of all mycelial fungi from the resulting compost. The final mycobiome consisted of only two yeast species, Pichia kudriavzevii and Diutina rugosa, with a total abundance of 1.2 × 107 CFU g-1 . CONCLUSIONS The rearing of BSFL led to the complete elimination of mycelial fungi from its feed substrate. The final compost lacked harmful fungi, including molds. This information may be crucial for BSF compost utilization. The phenomenon was also an interesting aspect of zoomicrobial interactions in nature and agriculture. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Tatiana A Kuznetsova
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Maksim V Vecherskii
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - David R Khayrullin
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Aleksandr A Stepankov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Irina A Maximova
- Lomonosov Moscow State University, Soil Science Department, Moscow, Russia
| | - Aleksey V Kachalkin
- Lomonosov Moscow State University, Soil Science Department, Moscow, Russia
- All-Russian Collection of Microorganisms, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Russia
| | - Nina A Ushakova
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
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Huang C, Zhang L, Johansen PG, Petersen MA, Arneborg N, Jespersen L. Debaryomyces hansenii Strains Isolated From Danish Cheese Brines Act as Biocontrol Agents to Inhibit Germination and Growth of Contaminating Molds. Front Microbiol 2021; 12:662785. [PMID: 34211441 PMCID: PMC8239395 DOI: 10.3389/fmicb.2021.662785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/20/2021] [Indexed: 11/13/2022] Open
Abstract
The antagonistic activities of native Debaryomyces hansenii strains isolated from Danish cheese brines were evaluated against contaminating molds in the dairy industry. Determination of chromosome polymorphism by use of pulsed-field gel electrophoresis (PFGE) revealed a huge genetic heterogeneity among the D. hansenii strains, which was reflected in intra-species variation at the phenotypic level. 11 D. hansenii strains were tested for their ability to inhibit germination and growth of contaminating molds, frequently occurring at Danish dairies, i.e., Cladosporium inversicolor, Cladosporium sinuosum, Fusarium avenaceum, Mucor racemosus, and Penicillium roqueforti. Especially the germination of C. inversicolor and P. roqueforti was significantly inhibited by cell-free supernatants of all D. hansenii strains. The underlying factors behind the inhibitory effects of the D. hansenii cell-free supernatants were investigated. Based on dynamic headspace sampling followed by gas chromatography-mass spectrometry (DHS-GC-MS), 71 volatile compounds (VOCs) produced by the D. hansenii strains were identified, including 6 acids, 22 alcohols, 15 aldehydes, 3 benzene derivatives, 8 esters, 3 heterocyclic compounds, 12 ketones, and 2 phenols. Among the 71 identified VOCs, inhibition of germination of C. inversicolor correlated strongly with three VOCs, i.e., 3-methylbutanoic acid, 2-pentanone as well as acetic acid. For P. roqueforti, two VOCs correlated with inhibition of germination, i.e., acetone and 2-phenylethanol, of which the latter also correlated strongly with inhibition of mycelium growth. Low half-maximal inhibitory concentrations (IC50) were especially observed for 3-methylbutanoic acid, i.e., 6.32-9.53 × 10-5 and 2.00-2.67 × 10-4 mol/L for C. inversicolor and P. roqueforti, respectively. For 2-phenylethanol, a well-known quorum sensing molecule, the IC50 was 1.99-7.49 × 10-3 and 1.73-3.45 × 10-3 mol/L for C. inversicolor and P. roqueforti, respectively. For acetic acid, the IC50 was 1.35-2.47 × 10-3 and 1.19-2.80 × 10-3 mol/L for C. inversicolor and P. roqueforti, respectively. Finally, relative weak inhibition was observed for 2-pentanone and acetone. The current study shows that native strains of D. hansenii isolated from Danish brines have antagonistic effects against specific contaminating molds and points to the development of D. hansenii strains as bioprotective cultures, targeting cheese brines and cheese surfaces.
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Affiliation(s)
| | | | | | | | | | - Lene Jespersen
- Department of Food Science, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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Chen O, Deng L, Ruan C, Yi L, Zeng K. Pichia galeiformis Induces Resistance in Postharvest Citrus by Activating the Phenylpropanoid Biosynthesis Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2619-2631. [PMID: 33594880 DOI: 10.1021/acs.jafc.0c06283] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This study aimed to investigate the effect of Pichia galeiformis on disease resistance and elucidate the changes in phenylpropane biosynthesis treated by P. galeiformis in postharvest citrus. The results showed that P. galeiformis reduced the disease incidence and lesion diameters without direct contact with the pathogen Penicillium digitatum. Transcriptome analysis revealed that phenylpropanoid biosynthesis was triggered by P. galeiformis. Genes encoding phenylpropanoid biosynthesis were upregulated, including phenylalanine ammonia-lyase (PAL), 4-coumaroyl-CoA ligase (4CL), cinnamate-4-hydroxylase (C4H), peroxidase (POD), cinnamyl alcohol dehydrogenase (CAD), O-methyltransferase, and hydroxyl cinnamoyl transferase. Moreover, P. galeiformis increased the activity of PAL, 4CL, C4H, POD, polyphenol oxidase, and CAD in citrus pericarp. In addition, P. galeiformis treated citrus displayed higher levels of total phenolic compounds, flavonoid, and lignin and higher amounts of ferulic and sinapic acid. In conclusion, these results suggested that P. galeiformis could induce resistance through modulating the pathway of phenylpropanoid biosynthesis in postharvest citrus.
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Affiliation(s)
- Ou Chen
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Lili Deng
- College of Food Science, Southwest University, Chongqing 400715, PR China
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, Chongqing 401331, PR China
| | - Changqing Ruan
- College of Food Science, Southwest University, Chongqing 400715, PR China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, PR China
| | - Lanhua Yi
- College of Food Science, Southwest University, Chongqing 400715, PR China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, PR China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing 400715, PR China
- Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, PR China
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From the vineyard to the cellar: new insights of Starmerella bacillaris (synonym Candida zemplinina) technological properties and genomic perspective. Appl Microbiol Biotechnol 2021; 105:493-501. [PMID: 33394145 DOI: 10.1007/s00253-020-11041-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/25/2020] [Accepted: 12/01/2020] [Indexed: 12/16/2022]
Abstract
A large diversity of yeasts can be involved in alcoholic fermentation; however, Starmerella bacillaris strains have gained great attention due to their relevant and particular characteristics. S. bacillaris is commonly known as an osmotolerant, acidogenic, psychrotolerant, and fructophilic yeast. Most strains of this species are high producers of glycerol and show low ethanol production rates, being highlighted as promising alternatives to the manufacture of low-alcohol beverages. The increased production of high alcohols, such as benzyl alcohol that has antifungal and antibacterial properties, highlights S. bacillaris potential as a biocontrol agent. After harvest, antifungal yeasts become part of the must microbiota and may also improve the fermentation process. Moreover, during the fermentation, S. bacillaris releases important molecules with biotechnological properties, such as mannoproteins and glutathione. Considering the potential biotechnological properties of S. bacillaris strains, this review presents an overview of recent trends concerning the application of S. bacillaris in fermented beverages. KEY POINTS: •S. bacillaris as an alternative to the production of low-alcohol beverages. •S. bacillaris strains present biocontrol potential. •Molecules released by S. bacillaris may be of great biotechnological interest.
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Bhatta UK. Alternative Management Approaches of Citrus Diseases Caused by Penicillium digitatum (Green Mold) and Penicillium italicum (Blue Mold). FRONTIERS IN PLANT SCIENCE 2021; 12:833328. [PMID: 35273621 PMCID: PMC8904086 DOI: 10.3389/fpls.2021.833328] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 12/31/2021] [Indexed: 05/09/2023]
Abstract
Green mold (Penicillium digitatum) and blue mold (Penicillium italicum) are among the most economically impactful post-harvest diseases of citrus fruit worldwide. Post-harvest citrus diseases are largely controlled with synthetic fungicides such as pyrimethanil, imazalil, fludioxonil, and thiabendazole. Due to their toxic effects, prolonged and excessive application of these fungicides is gradually restricted in favor of safe and more eco-friendly alternatives. This review comprehensively describes alternative methods for the control of P. digitatum and P. italicum: (a) antagonistic micro-organisms, (b) plant extracts and essential oils, (c) biofungicides, (d) chitosan and chitosan-based citrus coatings, (e) heat treatments, (f) ionizing and non-ionizing irradiations, (g) food additives, and (h) synthetic elicitors. Integrating multiple approaches such as the application of biocontrol agents with food additives or heat treatments have overcome some drawbacks to single treatments. In addition, integrating treatment approaches could produce an additive or synergistic effect on controlling both molds for a satisfactory level of disease reduction in post-harvest citrus. Further research is warranted on plant resistance and fruit-pathogen interactions to develop safer strategies for the sustainable control of P. digitatum and P. italicum in citrus.
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Wang Z, Sui Y, Li J, Tian X, Wang Q. Biological control of postharvest fungal decays in citrus: a review. Crit Rev Food Sci Nutr 2020; 62:861-870. [PMID: 33034197 DOI: 10.1080/10408398.2020.1829542] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Citrus (Citrus spp.) species produce a variety of fruits that are popular worldwide. Citrus fruits, however, are susceptible to postharvest decays caused by various pathogenic fungi, including Penicillium digitatum, Penicillium italicum, Geotrichum citri-aurantii, Aspergillus niger, and Aspergillus flavus. Decays resulting from infections by these pathogens cause a significant reduction in citrus quality and marketable yield. Biological control of postharvest decay utilizing antagonistic bacteria and fungi has been explored as a promising alternative to synthetic fungicides. In the present article, the isolation of antagonists utilized to manage postharvest decays in citrus is reviewed, and the mechanism of action including recent molecular and genomic studies is discussed as well. Several recently-postulated mechanisms of action, such as biofilm formation and an oxidative burst of reactive oxygen species have been highlighted. Improvements in biocontrol efficacy of antagonists through the use of a combination of microbial antagonists and additives are also reviewed. Biological control utilizing bacterial and yeast antagonists is a critical component of an integrated management approach for the sustainable development of the citrus industry. Further research will be needed, however, to explore and utilize beneficial microbial consortia and novel approaches like CRISPR/Cas technology for management of postharvest decays.
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Affiliation(s)
- Zhenshuo Wang
- Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China.,Engineering Research Center of Plant Growth Regulators/Crop Chemical Control Research Center, Department of Agronomy, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yuan Sui
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Forestry and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, Chongqing, China
| | - Jishun Li
- Ecology Institute, Qilu University of Technology Shandong, Academy of Sciences, Jinan, China
| | - Xiaoli Tian
- Engineering Research Center of Plant Growth Regulators/Crop Chemical Control Research Center, Department of Agronomy, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Qi Wang
- Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
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