1
|
Chen X, Liu J, Chen AJ, Wang L, Jiang X, Gong A, Liu W, Wu H. Burkholderia ambifaria H8 as an effective biocontrol strain against maize stalk rot via producing volatile dimethyl disulfide. PEST MANAGEMENT SCIENCE 2024; 80:4125-4136. [PMID: 38578571 DOI: 10.1002/ps.8119] [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: 12/04/2023] [Revised: 03/08/2024] [Accepted: 04/02/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Maize stalk rot (MSR) caused by Fusarium graminearum is the primary factor contributing to the reduction in maize yield and quality. However, this soil-borne disease presents a significant challenge for sustainable control through field management and chemical agents. The screening of novel biocontrol agents can aid in developing innovative and successful strategies for MSR control. RESULTS A total of 407 strains of bacteria were isolated from the rhizosphere soil of a resistant maize inbred line. One strain exhibited significant antagonistic activity in plate and pot experiments, and was identified as Burkholderia ambifaria H8. The strain could significantly inhibit the mycelial growth and spore germination of F. graminearum, induce resistance to stalk rot, and promote plant growth. The volatile compounds produced by strain H8 and its secondary metabolites in the sterile fermentation broth exhibited antagonistic activity. The primary volatile compound produced by strain H8 was identified as dimethyl disulfide (DMDS) using gas chromatography tandem mass spectrometry. Through in vitro antagonistic activity assays and microscopic observation, it was confirmed that DMDS was capable of inhibiting mycelial growth and disrupting the mycelial structure of F. graminearum, suggesting it may be the major active compound for strain H8. The transcriptome data of F. graminearum further indicated that strain H8 and its volatile compounds could alter pathogenic fungi metabolism, influence the related metabolic pathways, and potentially induce cell apoptosis within F. graminearum. CONCLUSION Our results showed that B. ambifaria H8 was capable of producing the volatile substance dimethyl disulfide, which influenced the synthesis and permeability of cell membranes in pathogens. Thus, B. ambifaria H8 was found to be a promising biological control agent against MSR. © 2024 Society of Chemical Industry.
Collapse
Affiliation(s)
- Xinyu Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing, China
| | - Jingrong Liu
- College of Life Science, Xinyang Normal University, Xinyang, China
| | - Amanda Juan Chen
- Microbiome Research Center, Moon (Beijing) Biotech Ltd., Beijing, P.R. China
| | - Lin Wang
- Microbiome Research Center, Moon (Beijing) Biotech Ltd., Beijing, P.R. China
| | - Xianzhi Jiang
- Microbiome Research Center, Moon (Beijing) Biotech Ltd., Beijing, P.R. China
| | - Andong Gong
- College of Life Science, Xinyang Normal University, Xinyang, China
| | - Wende Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing, China
| | - Hanxiang Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing, China
| |
Collapse
|
2
|
Behera PR, Behera KK, Sethi G, Prabina BJ, Bai AT, Sipra BS, Adarsh V, Das S, Behera KC, Singh L, Mishra MK, Behera M. Enhancing Agricultural Sustainability Through Rhizomicrobiome: A Review. J Basic Microbiol 2024:e2400100. [PMID: 38899609 DOI: 10.1002/jobm.202400100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/02/2024] [Accepted: 05/19/2024] [Indexed: 06/21/2024]
Abstract
Sustainable agriculture represents the responsible utilization of natural resources while safeguarding the well-being of the natural environment. It encompasses the objectives of preserving the environment, fostering economic growth, and promoting socioeconomic equality. To achieve sustainable development for humanity, it is imperative to prioritize sustainable agriculture. One significant approach to achieving this transition is the extensive utilization of microbes, which play a crucial role due to the genetic reliance of plants on the beneficial functions provided by symbiotic microbes. This review focuses on the significance of rhizospheric microbial communities, also known as the rhizomicrobiome (RM). It is a complex community of microorganisms that live in the rhizosphere and influence the plant's growth and health. It provides its host plant with various benefits related to plant growth, including biocontrol, biofertilization, phytostimulation, rhizoremediation, stress resistance, and other advantageous properties. Yet, the mechanisms by which the RM contributes to sustainable agriculture remain largely unknown. Investigating this microbial population presents a significant opportunity to advance toward sustainable agriculture. Hence, this study aims to provide an overview of the diversity and applications of RM in sustainable agriculture practices. Lately, there has been growing momentum in various areas related to rhizobiome research and its application in agriculture. This includes rhizosphere engineering, synthetic microbiome application, agent-based modeling of the rhizobiome, and metagenomic studies. So, developing bioformulations of these beneficial microorganisms that support plant growth could serve as a promising solution for future strategies aimed at achieving a new green revolution.
Collapse
Affiliation(s)
| | | | - Gangadhar Sethi
- Department of Botany, Shailabala Women's Autonomous College, Cuttack, Odisha, India
| | - B Jeberlin Prabina
- Department of Soil Science and Agricultural Chemistry, VOC AGRL College and Research Institute, Killikulam, India
| | - A Thoyajakshi Bai
- Department of Plant Pathology, College of Agriculture, Jawarharlal Nehru Krishi Vishwavidyalaya, Jabalpur, Madhya Pradesh, India
| | - B S Sipra
- Department of Botany, Ravenshaw University, Cuttack, Odisha, India
| | - Varanasi Adarsh
- School of Agriculture, GIET University, Rayagada, Odisha, India
| | - Sasmita Das
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | | | - Lakshmi Singh
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | - Mihir Kumar Mishra
- Department of Plant Pathology, College of Agriculture, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| | - Maheswari Behera
- School of Agriculture, GIET University, Rayagada, Odisha, India
- Department of Botany, College of Basic Science and Humanities, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
- Department of Plant Pathology, College of Agriculture, Odisha University of Agriculture & Technology, Bhubaneswar, Odisha, India
| |
Collapse
|
3
|
Bozorov TA, Toshmatov ZO, Kahar G, Muhammad SM, Liu X, Zhang D, Aytenov IS, Turakulov KS. Uncovering the antifungal activities of wild apple-associated bacteria against two canker-causing fungi, Cytospora mali and C. parasitica. Sci Rep 2024; 14:6307. [PMID: 38491079 PMCID: PMC10943224 DOI: 10.1038/s41598-024-56969-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 03/13/2024] [Indexed: 03/18/2024] Open
Abstract
Cytospora canker has become a devastating disease of apple species worldwide, and in severe cases, it may cause dieback of entire trees. The aim of this study was to characterize the diversity of cultivable bacteria from the wild apple microbiota and to determine their antifungal ability against the canker-causing pathogenic fungi Cytospora mali and C. parasitica. Five bacterial strains belonging to the species Bacillus amyloliquefaciens, B. atrophaeus, B. methylotrophicus, B. mojavensis, and Pseudomonas synxantha showed strong antagonistic effects against pathogenic fungi. Therefore, since the abovementioned Bacillus species produce known antifungal compounds, we characterized the antifungal compounds produced by Ps. synxantha. Bacteria grown on nutritional liquid medium were dehydrated, and the active compound from the crude extract was isolated and analysed via a range of chromatographic processes. High-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance analyses revealed a bioactive antifungal compound, phenazine-1-carboxylic acid (PCA). The minimum inhibitory concentration (MIC) demonstrated that PCA inhibited mycelial growth, with a MIC of 10 mg mL-1. The results suggested that PCA could be used as a potential compound to control C. mali and C. malicola, and it is a potential alternative for postharvest control of canker disease.
Collapse
Affiliation(s)
- Tohir A Bozorov
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China.
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China.
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan.
| | - Zokir O Toshmatov
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Gulnaz Kahar
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Surayya M Muhammad
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Xiaojie Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, China.
- Xinjiang Key Lab of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, 830011, China.
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
| | - Ilkham S Aytenov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
| | - Khurshid S Turakulov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
| |
Collapse
|
4
|
Maral-Gül D, Eltem R. Evaluation of Bacillus isolates as a biological control agents against soilborne phytopathogenic fungi. Int Microbiol 2024:10.1007/s10123-024-00490-1. [PMID: 38376639 DOI: 10.1007/s10123-024-00490-1] [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: 08/03/2023] [Revised: 01/03/2024] [Accepted: 02/07/2024] [Indexed: 02/21/2024]
Abstract
Pesticides, used in agriculture to control plant diseases, pose risks to the environment and human health. To address this, there's a growing focus on biocontrol, using microorganisms instead of chemicals. In this study, we aimed to identify Bacillus isolates as potential biological control agents. We tested 1574 Bacillus isolates for antifungal effects against pathogens like Botrytis cinerea, Fusarium solani, and Rhizoctonia solani. Out of these, 77 isolates formed inhibition zones against all three pathogens. We then investigated their lytic enzyme activities (protease, chitinase, and chitosanase) and the production of antifungal metabolites (siderophore and hydrogen cyanide). Coagulase activity was also examined to estimate potential pathogenicity in humans and animals. After evaluating all mechanisms, 19 non-pathogenic Bacillus isolates with significant antifungal effects were chosen. Molecular identification revealed they belonged to B. subtilis (n = 19) strains. The 19 native Bacillus strains, demonstrating strong antifungal effects in vitro, have the potential to form the basis for biocontrol product development. This could address challenges in agricultural production, marking a crucial stride toward sustainable agriculture.
Collapse
Affiliation(s)
- Derya Maral-Gül
- Graduate School of Natural and Applied Sciences, Department of Bioengineering, Ege University, 35100, Bornova-Izmir, Türkiye.
| | - Rengin Eltem
- Faculty of Engineering, Department of Bioengineering, Ege University, Izmir, Türkiye
| |
Collapse
|
5
|
Wu Y, Tan Y, Peng Q, Xiao Y, Xie J, Li Z, Ding H, Pan H, Wei L. Biocontrol potential of endophytic bacterium Bacillus altitudinis GS-16 against tea anthracnose caused by Colletotrichum gloeosporioides. PeerJ 2024; 12:e16761. [PMID: 38223761 PMCID: PMC10785793 DOI: 10.7717/peerj.16761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/13/2023] [Indexed: 01/16/2024] Open
Abstract
Background As one of the main pathogens causing tea anthracnose disease, Colletotrichum gloeosporioides has brought immeasurable impact on the sustainable development of agriculture. Given the adverse effects of chemical pesticides to the environment and human health, biological control has been a focus of the research on this pathogen. Bacillus altitudinis GS-16, which was isolated from healthy tea leaves, had exhibited strong antagonistic activity against tea anthracnose disease. Methods The antifungal mechanism of the endophytic bacterium GS-16 against C. gloeosporioides 1-F was determined by dual-culture assays, pot experiments, cell membrane permeability, cellular contents, cell metabolism, and the activities of the key defense enzymes. Results We investigated the possible mechanism of strain GS-16 inhibiting 1-F. In vitro, the dual-culture assays revealed that strain GS-16 had significant antagonistic activity (92.03%) against 1-F and broad-spectrum antifungal activity in all tested plant pathogens. In pot experiments, the disease index decreased to 6.12 after treatment with GS-16, indicating that strain GS-16 had a good biocontrol effect against tea anthracnose disease (89.06%). When the PE extract of GS-16 treated mycelial of 1-F, the mycelial appeared deformities, distortions, and swelling by SEM observations. Besides that, compared with the negative control, the contents of nucleic acids, protein, and total soluble sugar of GS-16 group were increased significantly, indicating that the PE extract of GS-16 could cause damage to integrity of 1-F. We also found that GS-16 obviously destroyed cellular metabolism and the normal synthesis of cellular contents. Additionally, treatment with GS-16 induced plant resistance by increasing the activities of the key defense enzymes PPO, SOD, CAT, PAL, and POD. Conclusions We concluded that GS-16 could damage cell permeability and integrity, destroy the normal synthesis of cellular contents, and induce plant resistance, which contributed to its antagonistic activity. These findings indicated that strain GS-16 could be used as an efficient microorganism for tea anthracnose disease caused by C. gloeosporioides.
Collapse
Affiliation(s)
- Youzhen Wu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang, Guizhou Province, China
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Institute of Biotechnology, Guiyang, Guizhou Province, China
| | - Yumei Tan
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Institute of Biotechnology, Guiyang, Guizhou Province, China
| | - Qiuju Peng
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang, Guizhou Province, China
| | - Yang Xiao
- Institution of Supervision and Inspection Product Quality of Guizhou Province, Guiyang, Guizhou Province, China
| | - Jiaofu Xie
- Guiyang No. 1 High School, Guiyang, Guizhou Province, China
| | - Zhu Li
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang, Guizhou Province, China
- Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Institute of Biotechnology, Guiyang, Guizhou Province, China
| | - Haixia Ding
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, Guizhou Province, China
| | - Hang Pan
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang, Guizhou Province, China
| | - Longfeng Wei
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang, Guizhou Province, China
| |
Collapse
|
6
|
Song X, Zheng R, Liu Y, Liu Z, Yu J, Li J, Zhang P, Gao Q, Li H, Li C, Liu X. Combined application of microbial inoculant and kelp-soaking wastewater promotes wheat seedlings growth and improves structural diversity of rhizosphere microbial community. Sci Rep 2023; 13:20697. [PMID: 38001242 PMCID: PMC10673839 DOI: 10.1038/s41598-023-48195-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 11/23/2023] [Indexed: 11/26/2023] Open
Abstract
Industrial processing of kelp generates large amounts of kelp-soaking wastewater (KSW), which contains a large amount of nutrient-containing substances. The plant growth-promoting effect might be further improved by combined application of growth-promoting bacteria and the nutrient-containing KSW. Here, a greenhouse experiment was conducted to determine the effect of the mixture of KSW and Bacillus methylotrophicus M4-1 (MS) vs. KSW alone (SE) on wheat seedlings, soil properties and the microbial community structure in wheat rhizosphere soil. The available potassium, available nitrogen, organic matter content and urease activity of MS soil as well as the available potassium of the SE soil were significantly different (p < 0.05) from those of the CK with water only added, increased by 39.51%, 36.25%, 41.61%, 80.56% and 32.99%, respectively. The dry and fresh weight of wheat seedlings from MS plants increased by 166.17% and 50.62%, respectively, while plant height increased by 16.99%, compared with CK. Moreover, the abundance and diversity of fungi in the wheat rhizosphere soil were significantly increased (p < 0.05), the relative abundance of Ascomycetes and Fusarium spp. decreased, while the relative abundance of Bacillus and Mortierella increased. Collectively, the combination of KSW and the plant growth-promoting strain M4-1 can promote wheat seedlings growth and improve the microecology of rhizosphere microorganisms, thereby solving the problems of resource waste and environmental pollution, ultimately turning waste into economic gain.
Collapse
Affiliation(s)
- Xin Song
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
- Key Laboratory of National Forestry and Grassland Administration on Silviculture of the Lower Yellow River, Shandong Agricultural University, Taian, China
| | - Rui Zheng
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Yue Liu
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Zhaoyang Liu
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Jian Yu
- Shandong Nongda Fertilizer Technology Co. Ltd, Taian, Shandong, China
| | - Jintai Li
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Pengcheng Zhang
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Qixiong Gao
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Huying Li
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Chaohui Li
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China
| | - Xunli Liu
- College of Forestry, Shandong Agriculture University, No. 61, Daizong Street, Taian, 271018, Shandong, China.
- Key Laboratory of National Forestry and Grassland Administration on Silviculture of the Lower Yellow River, Shandong Agricultural University, Taian, China.
| |
Collapse
|
7
|
Sanna M, Martino I, Guarnaccia V, Mezzalama M. Diversity and Pathogenicity of Fusarium Species Associated with Stalk and Crown Rot in Maize in Northern Italy. PLANTS (BASEL, SWITZERLAND) 2023; 12:3857. [PMID: 38005754 PMCID: PMC10674493 DOI: 10.3390/plants12223857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 11/26/2023]
Abstract
The genus Fusarium includes several agronomically important and toxin-producing species that are distributed worldwide and can cause a wide range of diseases. Crown and stalk rot and grain infections are among the most severe symptoms that Fusarium spp. can cause in maize. Disease development usually occurs during germination, but it may also affect the later phases of plant growth. The purpose of this study was to investigate the diversity and pathogenicity of 41 isolates recovered from symptomatic seedlings collected in Northern Italy and seeds of five different geographical origins in 2019 and 2020. The pathogenicity was tested and confirmed in 23 isolates causing rotting in maize seedlings, with disease indexes from 20% to 90%. A multilocus phylogeny analysis based on four genomic loci (tef1-α, rpb2, calm and tub2) was performed on 23 representative isolates. Representative isolates were identified as species belonging to three species complexes (SC), including Fusarium verticillioides and F. annulatum in the F. fujikuroi SC. Fusarium commune was identified in the F. nisikadoi SC, and three different lineages were found in the Fusarium oxysporum SC. This study reports F. annulatum and two lineages of the Fusarium oxysporum SC as maize pathogens for the first time in Italy.
Collapse
Affiliation(s)
- Martina Sanna
- Department of Agricultural, Forest and Food Sciences, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy; (M.S.); (I.M.); (V.G.)
- AGROINNOVA—Interdepartmental Centre for the Innovation in the Agro-Environmental Sector, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| | - Ilaria Martino
- Department of Agricultural, Forest and Food Sciences, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy; (M.S.); (I.M.); (V.G.)
- AGROINNOVA—Interdepartmental Centre for the Innovation in the Agro-Environmental Sector, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| | - Vladimiro Guarnaccia
- Department of Agricultural, Forest and Food Sciences, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy; (M.S.); (I.M.); (V.G.)
- AGROINNOVA—Interdepartmental Centre for the Innovation in the Agro-Environmental Sector, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| | - Monica Mezzalama
- Department of Agricultural, Forest and Food Sciences, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy; (M.S.); (I.M.); (V.G.)
- AGROINNOVA—Interdepartmental Centre for the Innovation in the Agro-Environmental Sector, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| |
Collapse
|
8
|
Pradhan S, Choudhury A, Dey S, Hossain MF, Saha A, Saha D. Siderophore-producing Bacillus amyloliquefaciens BM3 mitigate arsenic contamination and suppress Fusarium wilt in brinjal plants. J Appl Microbiol 2023; 134:lxad217. [PMID: 37740438 DOI: 10.1093/jambio/lxad217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 09/08/2023] [Accepted: 09/20/2023] [Indexed: 09/24/2023]
Abstract
AIM Arsenic contamination in agricultural soils poses a serious health risk for humans. Bacteria that produce siderophores, primarily for iron acquisition, can be relevant in combating arsenic toxicity in agricultural soils and simultaneously act as biocontrol agents against plant diseases. We evaluated the arsenic bioremediation and biocontrol potential of the rhizosphere isolate Bacillus amyloliquefaciens BM3 and studied the interaction between the purified siderophore bacillibactin and arsenic. METHODS AND RESULTS BM3 showed high arsenic resistance [MIC value 475 and 24 mM against As(V) and As(III), respectively] and broad spectrum in-vitro antagonism against several phytopathogenic fungi. BM3 was identified by biochemical characterization and 16S rRNA gene sequencing. Scanning electron microscopy (SEM) analysis revealed increased cell size of BM3 when grown in presence of sub-lethal arsenic concentrations. Bioremediation assays showed a 74% and 88.1% reduction in As(V) and As(III) concentrations, respectively. Genetic determinants for arsenic resistance (arsC and aoxB) and antifungal traits (bacAB and chiA) were detected by PCR. Arsenic chelating ability of bacillibactin, the siderophore purified from culture filtrate of BM3 and identified through spectroscopic data analysis, was observed in CAS assay and fluorescence spectrometry. In-vivo application of talc-based formulation of BM3 in brinjal seedlings showed significant reduction in Fusarium wilt disease. CONCLUSION Strain B. amyloliquefaciens BM3 may be useful in arsenic bioremediation and may be considered for large field trials as an alternative to chemical fungicides by inhibiting soil borne pathogens.
Collapse
Affiliation(s)
- Smriti Pradhan
- Department of Biotechnology, University of North Bengal, Siliguri, West Bengal 734013, India
| | - Abhinandan Choudhury
- Department of Biotechnology, University of North Bengal, Siliguri, West Bengal 734013, India
| | - Sovan Dey
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal 734013, India
| | - Md Firoj Hossain
- Department of Chemistry, University of North Bengal, Siliguri, West Bengal 734013, India
| | - Aniruddha Saha
- Department of Botany, University of North Bengal, Siliguri, West Bengal 734013, India
| | - Dipanwita Saha
- Department of Biotechnology, University of North Bengal, Siliguri, West Bengal 734013, India
| |
Collapse
|
9
|
Liu H, Fu G, Li Y, Zhang S, Ji X, Qiao K. Biocontrol Efficacy of Bacillus methylotrophicus TA-1 Against Meloidogyne incognita in Tomato. PLANT DISEASE 2023; 107:2709-2715. [PMID: 36774575 DOI: 10.1094/pdis-12-22-2801-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Root-knot nematodes (RKNs) are harmful plant-parasitic nematodes of tomatoes which can cause significant yield losses. Therefore, there is increasing interest in exploring the application of bacterial nematicides. The bacterium Bacillus methylotrophicus TA-1 is a broad-spectrum biological control agent; however, its effect on RKNs control remains largely unclear. In this study, the toxicity of B. methylotrophicus TA-1 against Meloidogyne incognita was investigated in vitro, and the potential of B. methylotrophicus TA-1 to decrease infection of RKNs in tomato were evaluated in pot and field trials. Results showed that B. methylotrophicus TA-1 exhibited high nematicidal activity against second-stage juveniles (J2s) and eggs of M. incognita with 50% lethal concentration (LC50) values of 5.80 and 7.00 × 108 colony forming units (CFU)/ml, respectively. In the pot experiments and field trials conducted in 2020 and 2021, tomato plants treated with B. methylotrophicus TA-1 soil drench applied once at 3, 6, and 9 × 108 CFU/plant had significantly higher plant height and greater yield compared with the untreated control. Tomato yields of the treated plots with B. methylotrophicus TA-1 in 2 consecutive years' field trials were between 53.4 to 66.1 and 52.8 to 61.5 t/ha, while they were 49.7 and 48.2 t/ha in the untreated control for each year, respectively. The lowest population densities of M. incognita at 30 and 60 days after treatment were 119 and 135 J2s per 100 g soil in 2020 and 43 and 118 J2s in 2021 in TA-1-treated plots. The lowest gall index of 4.7 and 3.3 in 2020 and 2021, respectively, and the highest yield were all observed in the TA-1 at 9 × 108 CFU/plant treated plants, with no significant differences with the commercial control abamectin. These results provided a basis for further studies of B. methylotrophicus TA-1 formulations, application doses, frequencies, and mechanisms of action, which are necessary before it could be used as a component of integrated management programs to manage RKNs in tomato production.
Collapse
Affiliation(s)
- Huimin Liu
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Guanghan Fu
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Yujie Li
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Shouan Zhang
- Tropical Research and Education Center, Department of Plant Pathology, University of Florida, IFAS, Homestead, FL 33031, U.S.A
| | - Xiaoxue Ji
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Kang Qiao
- Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| |
Collapse
|
10
|
Cao Y, Wang Y, Gui C, Nguvo KJ, Ma L, Wang Q, Shen Q, Zhang R, Gao X. Beneficial Rhizobacterium Triggers Induced Systemic Resistance of Maize to Gibberella Stalk Rot via Calcium Signaling. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:516-528. [PMID: 37188493 DOI: 10.1094/mpmi-08-22-0173-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Gibberella stalk rot (GSR) caused by the fungus Fusarium graminearum is a devastating disease of maize (Zea mays L.), but we lack efficient methods to control this disease. Biological control agents, including beneficial microorganisms, can be used as an effective and eco-friendly approach to manage crop diseases. For example, Bacillus velezensis SQR9, a bacterial strain isolated from the rhizosphere of cucumber plants, promotes growth and suppresses diseases in several plant species. However, it is not known whether and how SQR9 affects maize resistance to GSR. In this study, we found that treatment with SQR9 increased maize resistance to GSR by activating maize induced systemic resistance (ISR). RNA-seq and quantitative reverse transcription-PCR analysis showed that phenylpropanoid biosynthesis, amino acid metabolism, and plant-pathogen interaction pathways were enriched in the root upon colonization by SQR9. Also, several genes associated with calcium signaling pathways were up-regulated by SQR9 treatment. However, the calcium signaling inhibitor LaCl3 weakened the SQR9-activated ISR. Our data suggest that the calcium signaling pathway contributes to maize GSR resistance via the activation of ISR induced by SQR9. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
Collapse
Affiliation(s)
- Yu Cao
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Yinying Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Cuilin Gui
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Kilemi Jessee Nguvo
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Liang Ma
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Qing Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Qirong Shen
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Ruifu Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| | - Xiquan Gao
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing, Jiangsu Province, 210095, P.R. China
- College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, 210095, P.R. China
| |
Collapse
|
11
|
Rocha GT, Queiroz PRM, Grynberg P, Togawa RC, de Lima Ferreira ADC, do Nascimento IN, Gomes ACMM, Monnerat R. Biocontrol potential of bacteria belonging to the Bacillus subtilis group against pests and diseases of agricultural interest through genome exploration. Antonie Van Leeuwenhoek 2023:10.1007/s10482-023-01822-3. [PMID: 37178245 DOI: 10.1007/s10482-023-01822-3] [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: 08/18/2022] [Accepted: 03/08/2023] [Indexed: 05/15/2023]
Abstract
The usage of microorganisms as biocontrol agents and biofertilizers has been recommended and recognized as an ecologically correct alternative to maintaining the productivity and safety of crops. Thus, the objectives of this work were to characterize twelve strains belonging to Invertebrate Bacteria Collection of Embrapa Genetic Resources and Biotechnology by molecular, morphological, and biochemical methods and to evaluate the pathogenicity of these strains against pests and diseases of agricultural interest. The morphological characteristic of the strains was performed according to the principles of Bergy's Manual of Systematic Bacteriology. The genomes of the 12 strains were sequenced in Macrogen, Inc. (Seoul, Korea) using the HiSeq2000 and GS-FLX Plus high-performance platforms. In the determination of antibiotic sensibility profiles, disc-diffusion methods (Cefar Diagnótica Ltda) were adopted©. Selective bioassays were carried out with insects of the Lepidoptera (Spodoptera frugiperda, Helicoverpa armigera, and Chrysodeixis includens), Coleoptera (Anthonomus grandis), Diptera (Aedes aegypti) and Hemiptera (Euschistus heros) orders, and with the nematode Caenorhabditis elegans. In addition, the antagonistic action of the phytopathogens Fusarium oxysporum f. sp. vasinfectum and Sclerotinia sclerotiorum against the strains under study, and in vitro assays of phosphate solubilization were also performed. Sequencing of the complete genome of the 12 strains determined that all of them belonged to the Bacillus subtilis sensu lato group. In the strains genome were detected genic clusters responsible for encoding secondary metabolites such as surfactin, iturin, fengycins/plipastatin, bacillomycin, bacillisin, and siderophores. Due to the production of these compounds, there was a survival reduction of the Lepidoptera order insects and a reduction in the phytopathogens mycelial growth. These results show that the species of group B. subtilis s.l. can become promising microbiological alternatives to pest and disease control.
Collapse
Affiliation(s)
- Gabriela Teodoro Rocha
- Faculdade de Agronomia e Medicina Veterinária., Universidade de Brasília - Campus Darcy Ribeiro, Asa Norte, Brasília, DF, 70910-900, Brazil.
| | - Paulo Roberto Martins Queiroz
- Centro Universitário de Brasília - CEUB 707/907 - Campus Universitário, SEPN - Asa Norte, Brasília, DF, 70790-075, Brazil
| | - Priscila Grynberg
- Embrapa Recursos Genéticos e Biotecnologia, CENARGEN, Parque Estação Biológica, PqEB, Av. W5 Norte (final), Caixa Postal 02372, Brasília, DF, 70770-917, Brazil
| | - Roberto Coiti Togawa
- Embrapa Recursos Genéticos e Biotecnologia, CENARGEN, Parque Estação Biológica, PqEB, Av. W5 Norte (final), Caixa Postal 02372, Brasília, DF, 70770-917, Brazil
| | | | - Izabela Nunes do Nascimento
- Universidade Federal da Paraíba - Centro de Ciências Agrárias, Campus II, Rodovia PB 079 - Km 12, Areia, PB, 58397-000, Brazil
| | - Ana Cristina Meneses Mendes Gomes
- Embrapa Recursos Genéticos e Biotecnologia, CENARGEN, Parque Estação Biológica, PqEB, Av. W5 Norte (final), Caixa Postal 02372, Brasília, DF, 70770-917, Brazil
| | - Rose Monnerat
- Embrapa Recursos Genéticos e Biotecnologia, CENARGEN, Parque Estação Biológica, PqEB, Av. W5 Norte (final), Caixa Postal 02372, Brasília, DF, 70770-917, Brazil
| |
Collapse
|
12
|
Kang K, Niu Z, Zhang W, Wei S, Lv Y, Hu Y. Antagonistic Strain Bacillus halotolerans Jk-25 Mediates the Biocontrol of Wheat Common Root Rot Caused by Bipolaris sorokiniana. PLANTS (BASEL, SWITZERLAND) 2023; 12:828. [PMID: 36840176 PMCID: PMC9965128 DOI: 10.3390/plants12040828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
Common root rot caused by Bipolaris sorokiniana infestation in wheat is one of the main reasons for yield reduction in wheat crops worldwide. The bacterium strain JK-25 used in the current investigation was isolated from wheat rhizosphere soil and was later identified as Bacillus halotolerans based on its morphological, physiological, biochemical, and molecular properties. The strain showed significant antagonism to B. sorokiniana, Fusarium oxysporum, Fusarium graminearum, and Rhizoctonia zeae. Inhibition of B. sorokiniana mycelial dry weight and spore germination rate by JK-25 fermentation supernatant reached 60% and 88%, respectively. The crude extract of JK-25 was found, by Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS), to contain the surfactin that exerted an inhibitory effect on B. sorokiniana. The disruption of mycelial cell membranes was observed under laser scanning confocal microscope (LSCM) after treatment of B. sorokiniana mycelium with the crude extract. The antioxidant enzyme activity of B. sorokiniana was significantly reduced and the oxidation product malondialdehyde (MDA) content increased after treatment with the crude extract. The incidence of root rot was significantly reduced in pot experiments with the addition of JK-25 culture fermentation supernatant, which had a significant biological control effect of 72.06%. Its ability to produce siderophores may help to promote wheat growth and the production of proteases and pectinases may also be part of the strain's role in suppressing pathogens. These results demonstrate the excellent antagonistic effect of JK-25 against B. sorokiniana and suggest that this strain has great potential as a resource for biological control of wheat root rot strains.
Collapse
|
13
|
Zhang K, Wang L, Si H, Guo H, Liu J, Jia J, Su Q, Wang Y, Zang J, Xing J, Dong J. Maize stalk rot caused by Fusarium graminearum alters soil microbial composition and is directly inhibited by Bacillus siamensis isolated from rhizosphere soil. Front Microbiol 2022; 13:986401. [PMID: 36338067 PMCID: PMC9630747 DOI: 10.3389/fmicb.2022.986401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/03/2022] [Indexed: 11/21/2022] Open
Abstract
Maize stalk rot caused by Fusarium graminearum can reduce the yield of maize and efficiency of mechanized harvesting. Besides, deoxynivalenol and zearalenone toxins produced by F. graminearum can also affect domestic animals and human health. As chemical fungicides are expensive and exert negative effects on the environment, the use of biological control agents has become attractive in recent years. In the present study, we collected rhizosphere soil with severe stalk rot disease (ZDD), the rhizosphere soil with disease-free near by the ZDD (ZDH), and measured rhizosphere microbial diversity and microbial taxonomic composition by amplicon sequencing targeting either bacteria or fungi. The results showed that Fusarium stalk rot caused by the Fusarium species among which F. graminearum is frequent and can reduce the abundance and alpha diversity of rhizosphere microbial community, and shift the beta diversity of microorganisms. Furthermore, a bacterial strain, Bacillus siamensis GL-02, isolated from ZDD, was found to significantly affect growth of F. graminearum. In vitro and in vivo assays demonstrated that B. siamensis GL-02 had good capability to inhibit F. graminearum. These results revealed that B. siamensis GL-02 could be a potential biocontrol agent for the control of maize stalk rot.
Collapse
Affiliation(s)
- Kang Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Liming Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Helong Si
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Hao Guo
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jianhu Liu
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jiao Jia
- Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling, China
| | - Qianfu Su
- Institute of Plant Protection, Jilin Academy of Agricultural Sciences, Gongzhuling, China
| | - Yanbo Wang
- Maize Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang, China
| | - Jinping Zang
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
| | - Jihong Xing
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
- *Correspondence: Jihong Xing,
| | - Jingao Dong
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding, China
- Jingao Dong,
| |
Collapse
|
14
|
Xie S, Jiang L, Wu Q, Wan W, Gan Y, Zhao L, Wen J. Maize Root Exudates Recruit Bacillus amyloliquefaciens OR2-30 to Inhibit Fusarium graminearum Infection. PHYTOPATHOLOGY 2022; 112:1886-1893. [PMID: 35297645 DOI: 10.1094/phyto-01-22-0028-r] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Bacillus spp. can exert plant growth-promoting effects and biocontrol effects after effective colonization, and bacterial chemotaxis toward plant root exudates is the initial step to colonize. Under biotic stress, plants are able to alter their root exudates to attract or avoid different types of microbes. Hence, Bacillus chemotaxis toward root exudates after pathogen infection is crucial for exerting their beneficial effects. In this study, the Bacillus amyloliquefaciens OR2-30 strain, which exhibited greater chemotaxis ability toward maize root exudates after Fusarium graminearum infection, was screened from 156 rhizosphere microorganisms. The infected maize root exudates were further confirmed to improve the swarming and biofilm formation ability of the OR2-30 strain. Chemotaxis, swarming, and biofilm formation ability were able to influence bacterial colonization. Indeed, the the OR2-30 strain displayed more effective colonization ability in the maize rhizosphere after F. graminearum inoculation. Moreover, lipopeptides produced by OR2-30 were identified as iturins and responsible for suppressing F. graminearum growth. Further study showed that lipopeptides suppressed the growth of F. graminearum by inhibiting conidia formation and germination, inducing reactive oxygen species production and causing cell death in mycelium. Eventually, the OR2-30 strain increased maize resistance against F. graminearum. These results suggested that maize root exudates could recruit B. amyloliquefacines OR2-30 after F. graminearum infection, and that OR2-30 then suppresses the F. graminearum by producing lipopeptides, such as iturins, to protect maize.
Collapse
Affiliation(s)
- Shanshan Xie
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Lin Jiang
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Qin Wu
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Wenkun Wan
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Yutian Gan
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Lingling Zhao
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Jiajia Wen
- The National Key Engineering Lab of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| |
Collapse
|
15
|
Zhang J, Zhu W, Goodwin PH, Lin Q, Xia M, Xu W, Sun R, Liang J, Wu C, Li H, Wang Q, Yang L. Response of Fusarium pseudograminearum to Biocontrol Agent Bacillus velezensis YB-185 by Phenotypic and Transcriptome Analysis. J Fungi (Basel) 2022; 8:jof8080763. [PMID: 35893131 PMCID: PMC9331925 DOI: 10.3390/jof8080763] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 02/01/2023] Open
Abstract
The use of biological control agents (BCAs) is a promising alternative control measure for Fusarium crown rot (FCR) of wheat caused by Fusarium pseudograminearum. A bacterial strain, YB-185, was isolated from the soil of wheat plants with FCR and identified as Bacillus velezensis. YB-185 exhibited strong inhibition of F. pseudograminearum mycelial growth and conidial germination in culture. Seed treatment with YB-185 in greenhouse and field resulted in reductions in disease by 66.1% and 57.6%, respectively, along with increased grain yield. Microscopy of infected root tissues confirmed that YB-185 reduced root invasion by F. pseudograminearum. RNA-seq of F. pseudograminearum during co-cultivation with B. velezensis YB-185 revealed 5086 differentially expressed genes (DEGs) compared to the control. Down-regulated DEGs included genes for glucan synthesis, fatty acid synthesis, mechanosensitive ion channels, superoxide dismutase, peroxiredoxin, thioredoxin, and plant-cell-wall-degrading enzymes, whereas up-regulated DEGs included genes for chitin synthesis, ergosterol synthesis, glutathione S-transferase, catalase, and ABC transporters. In addition, fungal cell apoptosis increased significantly, as indicated by TUNEL staining, and the scavenging rate of 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical cation (ABTS·+) in the fungus significantly decreased. Thus, F. pseudograminearum may be trying to maintain normal cell functions by increasing cell wall and membrane synthesis, antioxidant and anti-stress responses, detoxification of bacterial antimicrobial compounds, and transportation of damaging compounds from its cells. However, cell death and free radical accumulation still occurred, indicating that the responses were insufficient to prevent cell damage. Bacillus velezensis YB-185 is a promising BCA against FCR that acts by directly damaging F. pseudograminearum, thus reducing its ability to colonize roots and produce symptoms.
Collapse
Affiliation(s)
- Jie Zhang
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Wenqian Zhu
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Paul H. Goodwin
- School of Environmental Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Qitong Lin
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Mingcong Xia
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Wen Xu
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Runhong Sun
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Juan Liang
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Chao Wu
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
| | - Honglian Li
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China;
| | - Qi Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China;
| | - Lirong Yang
- Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Henan Biopesticide Engineering Research Center, Henan Agricultural Microbiology Innovation Center, Zhengzhou 450002, China; (J.Z.); (W.Z.); (Q.L.); (M.X.); (W.X.); (R.S.); (J.L.); (C.W.)
- Correspondence: ; Tel.: +86-371-6585-2150
| |
Collapse
|
16
|
Effects of Bacillus methylotrophicus SY200 Supplementation on Growth Performance, Antioxidant Status, Intestinal Morphology, and Immune Function in Broiler Chickens. Probiotics Antimicrob Proteins 2022:10.1007/s12602-022-09924-6. [PMID: 35150396 DOI: 10.1007/s12602-022-09924-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2022] [Indexed: 10/19/2022]
Abstract
The present study was focused on evaluating the effects of Bacillus methylotrophicus SY200 in broiler production. A total of 120 healthy 7-day-old broiler chicks were randomly assigned to four dietary treatments, which included basal diet supplemented with 0%, 0.10%, 0.25%, or 0.50% (w/w) B. methylotrophicus SY200 preparation (1.0 × 109 cfu/g), regarded as negative control group (NC), low-dose group (BML), medium-dose group (BMM), and high-dose group (BMH), respectively. Each treatment was fed the corresponding experimental diet for 35 days. Results showed that dietary supplementation of B. methylotrophicus SY200 could improve broiler weight gain, especially the finisher phase. Further studies suggested that a certain amount of B. methylotrophicus SY200 enhanced the broiler antioxidant status and improved the morphological development of jejunum. Besides, dietary supplementation of B. methylotrophicus SY200 especially in 0.50% levels significantly increased the relative weight of immune organs and Newcastle disease virus antibody titer, similarly, increased mRNA expression levels of claudin-1, claudin-3, zonula occluden-1, and zonula occluden-2 were observed in the jejunum of BMM group. Moreover, B. methylotrophicus SY200 also showed beneficial effects in improving broilers microbiota homeostasis by increasing the number of beneficial bacteria. Conclusively, B. methylotrophicus SY200 could effectively improve the antioxidant status, modulate the intestinal structure, enhance the intestinal mucosal barrier function, and regulate the immune function of broilers, which finally improves the performance of the chicken in the finisher period.
Collapse
|
17
|
Herms CH, Hennessy RC, Bak F, Dresbøll DB, Nicolaisen MH. Back to our roots: exploring the role of root morphology as a mediator of beneficial plant-microbe interactions. Environ Microbiol 2022; 24:3264-3272. [PMID: 35106901 PMCID: PMC9543362 DOI: 10.1111/1462-2920.15926] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 11/27/2022]
Abstract
Plant breeding for belowground traits that have a positive impact on the rhizosphere microbiome is a promising strategy to sustainably improve crop yields. Root architecture and morphology are understudied plant breeding targets despite their potential to significantly shape microbial community structure and function in the rhizosphere. In this review, we explore the relationship between various root architectural and morphological traits and rhizosphere interactions, focusing on the potential of root diameter to impact the rhizosphere microbiome structure and function while discussing the potential biological and ecological mechanisms underpinning this process. In addition, we propose three future research avenues to drive this research area in an effort to unravel the effect of belowground traits on rhizosphere microbiology. This knowledge will pave the way for new plant breeding strategies that can be exploited for sustainable and high‐yielding crop cultivars.
Collapse
Affiliation(s)
- Courtney Horn Herms
- Section for Microbial Ecology and Biotechnology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| | - Rosanna Catherine Hennessy
- Section for Microbial Ecology and Biotechnology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| | - Frederik Bak
- Section for Microbial Ecology and Biotechnology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| | - Dorte Bodin Dresbøll
- Section for Crop Sciences, Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegård Allé 30, Taastrup, 2630, Denmark
| | - Mette Haubjerg Nicolaisen
- Section for Microbial Ecology and Biotechnology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| |
Collapse
|
18
|
Uwaremwe C, Yue L, Wang Y, Tian Y, Zhao X, Liu Y, Zhou Q, Zhang Y, Wang R. An Endophytic Strain of Bacillus amyloliquefaciens Suppresses Fusarium oxysporum Infection of Chinese Wolfberry by Altering Its Rhizosphere Bacterial Community. Front Microbiol 2022; 12:782523. [PMID: 35069484 PMCID: PMC8767019 DOI: 10.3389/fmicb.2021.782523] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/25/2021] [Indexed: 11/13/2022] Open
Abstract
Root rot disease is a serious infection leading to production loss of Chinese wolfberry (Lycium barbarum). This study tested the potential for two bacterial biological control agents, Bacillus amyloliquefaciens HSB1 and FZB42, against five fungal pathogens that frequently cause root rot in Chinese wolfberry. Both HSB1 and FZB42 were found to inhibit fungal mycelial growth, in vitro and in planta, as well as to promote the growth of wolfberry seedlings. In fact, a biocontrol experiment showed efficiency of 100% with at least one treatment involving each biocontrol strain against Fusarium oxysporum. Metagenomic sequencing was used to assess bacterial community shifts in the wolfberry rhizosphere upon introduction of each biocontrol strain. Results showed that HSB1 and FZB42 differentially altered the abundances of different taxa present and positively influenced various functions of inherent wolfberry rhizosphere bacteria. This study highlights the application of biocontrol method in the suppression of fungal pathogens that cause root rot disease in wolfberry, which is useful for agricultural extension agents and commercial growers.
Collapse
Affiliation(s)
- Constantine Uwaremwe
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences (CAS), Mengla, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Liang Yue
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yun Wang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China
| | - Yuan Tian
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xia Zhao
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yang Liu
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qin Zhou
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yubao Zhang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ruoyu Wang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
19
|
El-Saadony MT, Saad AM, Soliman SM, Salem HM, Ahmed AI, Mahmood M, El-Tahan AM, Ebrahim AAM, Abd El-Mageed TA, Negm SH, Selim S, Babalghith AO, Elrys AS, El-Tarabily KA, AbuQamar SF. Plant growth-promoting microorganisms as biocontrol agents of plant diseases: Mechanisms, challenges and future perspectives. FRONTIERS IN PLANT SCIENCE 2022; 13:923880. [PMID: 36275556 PMCID: PMC9583655 DOI: 10.3389/fpls.2022.923880] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/24/2022] [Indexed: 05/14/2023]
Abstract
Plant diseases and pests are risk factors that threaten global food security. Excessive chemical pesticide applications are commonly used to reduce the effects of plant diseases caused by bacterial and fungal pathogens. A major concern, as we strive toward more sustainable agriculture, is to increase crop yields for the increasing population. Microbial biological control agents (MBCAs) have proved their efficacy to be a green strategy to manage plant diseases, stimulate plant growth and performance, and increase yield. Besides their role in growth enhancement, plant growth-promoting rhizobacteria/fungi (PGPR/PGPF) could suppress plant diseases by producing inhibitory chemicals and inducing immune responses in plants against phytopathogens. As biofertilizers and biopesticides, PGPR and PGPF are considered as feasible, attractive economic approach for sustainable agriculture; thus, resulting in a "win-win" situation. Several PGPR and PGPF strains have been identified as effective BCAs under environmentally controlled conditions. In general, any MBCA must overcome certain challenges before it can be registered or widely utilized to control diseases/pests. Successful MBCAs offer a practical solution to improve greenhouse crop performance with reduced fertilizer inputs and chemical pesticide applications. This current review aims to fill the gap in the current knowledge of plant growth-promoting microorganisms (PGPM), provide attention about the scientific basis for policy development, and recommend further research related to the applications of PGPM used for commercial purposes.
Collapse
Affiliation(s)
- Mohamed T. El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Ahmed M. Saad
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Soliman M. Soliman
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Heba M. Salem
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Alshaymaa I. Ahmed
- Department of Agricultural Microbiology, Faculty of Agriculture, Beni-Suef University, Beni-Suef, Egypt
| | - Mohsin Mahmood
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, China
| | - Amira M. El-Tahan
- Plant Production Department, Arid Lands Cultivation Research Institute, The City of Scientific Research and Technological Applications, Alexandria, Egypt
| | - Alia A. M. Ebrahim
- Jiangsu Key Laboratory for Microbes and Genomics, School, of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Taia A. Abd El-Mageed
- Department of Soils and Water, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
| | - Shaimaa H. Negm
- Department of Home Economic, Specific Education Faculty, Port Said University, Port Said, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Ahmad O. Babalghith
- Medical Genetics Department, College of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ahmed S. Elrys
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Khaled A. El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al-Ain, United Arab Emirates
- Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
- *Correspondence: Khaled A. El-Tarabily,
| | - Synan F. AbuQamar
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- Synan F. AbuQamar,
| |
Collapse
|
20
|
Yi Y, Shan Y, Liu S, Yang Y, Liu Y, Yin Y, Hou Z, Luan P, Li R. Antagonistic Strain Bacillus amyloliquefaciens XZ34-1 for Controlling Bipolaris sorokiniana and Promoting Growth in Wheat. Pathogens 2021; 10:pathogens10111526. [PMID: 34832680 PMCID: PMC8619621 DOI: 10.3390/pathogens10111526] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/19/2021] [Accepted: 11/19/2021] [Indexed: 11/20/2022] Open
Abstract
Common root rot, caused by Bipolaris sorokiniana, is one of the most prevalent diseases of wheat and has led to major declines in wheat yield and quality worldwide. Here, strain XZ34-1 was isolated from soil and identified as Bacillus amyloliquefaciens based on the morphological, physiological, biochemical characteristics and 16S rDNA sequence. Culture filtrate (CF) of strain XZ34-1 showed a high inhibition rate against B.sorokiniana and had a broad antifungal spectrum. It also remarkably inhibited the mycelial growth and spore germination of B. sorokiniana. In pot control experiments, the incidence and disease index of common root rot in wheat seedlings were decreased after treatment with CF, and the biological control efficacy was significant, up to 78.24%. Further studies showed XZ34-1 could produce antifungal bioactive substances and had the potential of promoting plant growth. Lipopeptide genes detection with PCR indicated that strain XZ34-1 may produce lipopeptides. Furthermore, activities of defense-related enzymes were enhanced in wheat seedlings after inoculation with B.sorokiniana and treatment with CF, which showed induced resistance could be produced in wheat to resist pathogens. These results reveal that strain XZ34-1 is a promising candidate for application as a biological control agent against B.sorokiniana.
Collapse
Affiliation(s)
- Yanjie Yi
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
- Correspondence: (Y.Y.); (R.L.); Tel.: +86-371-67756513 (Y.Y. & R.L.)
| | - Youtian Shan
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Shifei Liu
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
| | - Yanhui Yang
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Yang Liu
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Yanan Yin
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Zhipeng Hou
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Pengyu Luan
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Ruifang Li
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; (Y.S.); (S.L.); (Y.Y.); (Y.L.); (Y.Y.); (Z.H.); (P.L.)
- The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
- Correspondence: (Y.Y.); (R.L.); Tel.: +86-371-67756513 (Y.Y. & R.L.)
| |
Collapse
|
21
|
Fan H, Li S, Zeng L, He P, Xu S, Bai T, Huang Y, Guo Z, Zheng SJ. Biological Control of Fusarium oxysporum f. sp. cubense Tropical Race 4 Using Natively Isolated Bacillus spp. YN0904 and YN1419. J Fungi (Basel) 2021; 7:jof7100795. [PMID: 34682217 PMCID: PMC8537417 DOI: 10.3390/jof7100795] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 11/23/2022] Open
Abstract
Fusarium wilt of banana (FWB) is the main threatening factor for banana production worldwide. To explore bacterial biocontrol resources for FWB, the antagonistic effective strains were isolated from banana-producing areas in Yunnan Province, China. Two isolates (YN0904 and YN1419) displaying strong antagonism against Tropical Race 4 (TR4) were identified from a total of 813 strains of endophytic bacteria. TR4 inhibition rates of YN0904 and YN1419 were 79.6% and 81.3%, respectively. By looking at morphological, molecular, physiological and biochemical characteristics, YN0904 was identified as Bacillus amyloliquefaciens, while YN1419 was identified as B. subtillis. The control effects of YN0904 and YN1419 on TR4 in greenhouse experiments were 82.6% and 85.6%, respectively. Furthermore, YN0904 obviously promoted the growth of banana plantlets. In addition, biocontrol marker genes related to the biosynthesis of antibiotics synthesized and auxin key synthetase genes could be detected in YN0904. Surprisingly, the marker gene sboA could be exclusively detected in YN1419, while other marker genes were all absent. Molecular characterization results could provide a theoretical basis for expounding the biocontrol mechanisms of these two strains. We concluded that natively antagonistic strains derived from local banana plantations could provide new biological control resources for FWB.
Collapse
Affiliation(s)
- Huacai Fan
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Shu Li
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Li Zeng
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
- Correspondence: (L.Z.); (S.-J.Z.)
| | - Ping He
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Shengtao Xu
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Tingting Bai
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Yuling Huang
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Zhixiang Guo
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
| | - Si-Jun Zheng
- Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming 650205, China; (H.F.); (S.L.); (P.H.); (S.X.); (T.B.); (Y.H.); (Z.G.)
- Bioversity International, 2238 Beijing Road, Kunming 650205, China
- Correspondence: (L.Z.); (S.-J.Z.)
| |
Collapse
|
22
|
Genomic Analysis and Secondary Metabolites Production of the Endophytic Bacillus velezensis Bvel1: A Biocontrol Agent against Botrytis cinerea Causing Bunch Rot in Post-Harvest Table Grapes. PLANTS 2021; 10:plants10081716. [PMID: 34451760 PMCID: PMC8400388 DOI: 10.3390/plants10081716] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 11/16/2022]
Abstract
Botrytis bunch rot caused by Botrytis cinerea is one of the most economically significant post-harvest diseases of grapes. In the present study, we showed that the bacterial strain Bvel1 is phylogenetically affiliated to Bacillus velezensis species. The strain Bvel1 and its secreted metabolites exerted an antifungal activity, under in vitro conditions, against B. cinerea. UHPLC-HRMS chemical analysis revealed that iturin A2, surfactin-C13 and -C15, oxydifficidin, bacillibactin, L-dihydroanticapsin, and azelaic acid were among the metabolites secreted by Bvel1. Treatment of wounded grape berries with Bacillus sp. Bvel1 cell culture was effective for controlling grey mold ingress and expansion in vivo. The effectiveness of this biological control agent was a function of the cell culture concentration of the antagonist applied, while preventive treatment proved to be more effective compared to curative. The strain Bvel1 exhibited an adequate colonization efficiency in wounded grapes. The whole-genome phylogeny, combined with ANI and dDDH analyses, provided compelling evidence that the strain Bvel1 should be taxonomically classified as Bacillus velezensis. Genome mining approaches showed that the strain Bvel1 harbors 13 antimicrobial biosynthetic gene clusters, including iturin A, fengycin, surfactin, bacilysin, difficidin, bacillaene, and bacillibactin. The results provide new insights into the understanding of the endophytic Bacillus velezensis Bvel1 biocontrol mechanism against post-harvest fungal pathogens, including bunch rot disease in grape berries.
Collapse
|
23
|
Yan H, Qiu Y, Yang S, Wang Y, Wang K, Jiang L, Wang H. Antagonistic Activity of Bacillus velezensis SDTB038 against Phytophthora infestans in Potato. PLANT DISEASE 2021; 105:1738-1747. [PMID: 33174798 DOI: 10.1094/pdis-08-20-1666-re] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Potato late blight is a severe and highly epidemic disease caused by Phytophthora infestans that can affect all parts of the plant. This study mainly screened antagonistic strains for good control of potato late blight and identified strain SDTB038 as Bacillus velezensis according to its morphological and chemical properties and the 16S rRNA, gyrA, and gyrB gene sequences. This antagonistic strain achieved good control of potato late blight in greenhouses and fields and promoted potato plant growth. Two-year field trials (2018 and 2019) showed that B. velezensis SDTB038 can be used to reduce food losses caused by late blight, achieving late blight reductions of 40.79% (2018) and 37.67% (2019). In two-year field trials, the control effects of the highest concentrations of fluopimomide and B. velezensis SDTB038 were better than those of the other treatments. The control effect of 85 g ha-1 fluopimomide and B. velezensis SDTB038 and that of 170 g ha-1 fluopimomide alone showed no significant differences. These field results indicate that a low concentration of fungicide and a high concentration of SDTB038 can be effective in controlling potato late blight. Foliar detection showed that lipopeptides have an inhibitory effect on P. infestans. The amplification of lipopeptide genes revealed surfactin (srfAB and srfAC) and fengycin (fenB) genes in SDTB038, but only surfactin production by B. velezensis SDTB038 was observed by ultra-high-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry analysis. Therefore, the strain B. velezensis SDTB038 can produce secondary metabolites that help potato plants resist late blight development, can effectively inhibit the infection of potato leaves by P. infestans, and has potential value for development as a biological pesticide against potato late blight.
Collapse
Affiliation(s)
- Haohao Yan
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Yue Qiu
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Shuai Yang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Yongqiang Wang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Kaiyun Wang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Lili Jiang
- Shandong Institute of Pomology, Shandong Academy of Agricultural Science, Tai'an, Shandong 271000, China
| | - Hongyan Wang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| |
Collapse
|
24
|
Ares A, Costa J, Joaquim C, Pintado D, Santos D, Messmer MM, Mendes-Moreira PM. Effect of Low-Input Organic and Conventional Farming Systems on Maize Rhizosphere in Two Portuguese Open-Pollinated Varieties (OPV), "Pigarro" (Improved Landrace) and "SinPre" (a Composite Cross Population). Front Microbiol 2021; 12:636009. [PMID: 33717028 PMCID: PMC7953162 DOI: 10.3389/fmicb.2021.636009] [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: 11/30/2020] [Accepted: 01/19/2021] [Indexed: 11/13/2022] Open
Abstract
Maize is one of the most important crops worldwide and is the number one arable crop in Portugal. A transition from the conventional farming system to organic agriculture requires optimization of cultivars and management, the interaction of plant-soil rhizosphere microbiota being pivotal. The objectives of this study were to unravel the effect of population genotype and farming system on microbial communities in the rhizosphere of maize. Rhizosphere soil samples of two open-pollinated maize populations ("SinPre" and "Pigarro") cultivated under conventional and organic farming systems were taken during flowering and analyzed by next-generation sequencing (NGS). Phenological data were collected from the replicated field trial. A total of 266 fungi and 317 bacteria genera were identified in "SinPre" and "Pigarro" populations, of which 186 (69.9%) and 277 (87.4%) were shared among them. The microbiota of "Pigarro" showed a significant higher (P < 0.05) average abundance than the microbiota of "SinPre." The farming system had a statistically significant impact (P < 0.05) on the soil rhizosphere microbiota, and several fungal and bacterial taxa were found to be farming system-specific. The rhizosphere microbiota diversity in the organic farming system was higher than that in the conventional system for both varieties. The presence of arbuscular mycorrhizae (Glomeromycota) was mainly detected in the microbiota of the "SinPre" population under the organic farming systems and very rare under conventional systems. A detailed metagenome function prediction was performed. At the fungal level, pathotroph-saprotroph and pathotroph-symbiotroph lifestyles were modified by the farming system. For bacterial microbiota, the main functions altered by the farming system were membrane transport, transcription, translation, cell motility, and signal transduction. This study allowed identifying groups of microorganisms known for their role as plant growth-promoting rhizobacteria (PGPR) and with the capacity to improve crop tolerance for stress conditions, allowing to minimize the use of synthetic fertilizers and pesticides. Arbuscular mycorrhizae (phyla Glomeromycota) were among the most important functional groups in the fungal microbiota and Achromobacter, Burkholderia, Erwinia, Lysinibacillus, Paenibacillus, Pseudomonas, and Stenotrophomonas in the bacterial microbiota. In this perspective, the potential role of these microorganisms will be explored in future research.
Collapse
Affiliation(s)
- Aitana Ares
- Department of Life Sciences, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal.,Laboratory for Phytopathology, Instituto Pedro Nunes, Coimbra, Portugal
| | - Joana Costa
- Department of Life Sciences, Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal.,Laboratory for Phytopathology, Instituto Pedro Nunes, Coimbra, Portugal
| | - Carolina Joaquim
- Centro de Recursos Naturais, Ambiente e Sociedade (CERNAS), Coimbra, Portugal
| | - Duarte Pintado
- Centro de Recursos Naturais, Ambiente e Sociedade (CERNAS), Coimbra, Portugal
| | - Daniela Santos
- Centro de Recursos Naturais, Ambiente e Sociedade (CERNAS), Coimbra, Portugal
| | - Monika M Messmer
- Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
| | | |
Collapse
|
25
|
Zhang X, Guo X, Wu C, Li C, Zhang D, Zhu B. Isolation, heterologous expression, and purification of a novel antifungal protein from Bacillus subtilis strain Z-14. Microb Cell Fact 2020; 19:214. [PMID: 33228718 PMCID: PMC7684727 DOI: 10.1186/s12934-020-01475-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 11/13/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Wheat sheath blight, a soil borne fungal disease caused by Rhizoctonia cerealis, is considered as one of the most serious threats to wheat worldwide. Bacillus subtilis Z-14 was isolated from soil sampled from a wheat rhizosphere and was confirmed to have strong antifungal activity against R. cerealis. RESULTS An antifungal protein, termed F2, was isolated from the culture supernatant of Z-14 strain using precipitation with ammonium sulfate, anion exchange chromatography, and reverse phase chromatography. Purified F2 had a molecular mass of approximately 8 kDa, as assessed using sodium dodecyl sulfate polyacrylamide gel electrophoresis. Edman degradation was used to determine the amino acid sequence of the N-terminus, which was NH2ASGGTVGIYGANMRS. This sequence is identical to a hypothetical protein RBAM_004680 (YP_001420098.1) synthesized by B. amyloliquefaciens FZB42. The recombinant F2 protein (rF2) was heterologously expressed in the yeast host Pichia pastoris, purified using a Niaffinity column, and demonstrated significant antifungal activity against R. cerealis. The purified rF2 demonstrated broad spectrum antifungal activity against different varieties of fungi such as Fusarium oxysporum, Verticillium dahliae, Bipolaris papendorfii, and Fusarium proliferatum. rF2 was thermostable, retaining 91.5% of its activity when incubated for 30 min at 100 °C. Meanwhile, rF2 maintained its activity under treatment by proteinase K and trypsin and over a wide pH range from 5 to 10. CONCLUSIONS A novel antifungal protein, F2, was purified from biocontrol Bacillus subtilis Z-14 strain fermentation supernatant and heterologously expressed in Pichia pastoris to verify its antifungal activity against R. cerealis and the validity of the gene encoding F2. Considering its significant antifungal activity and stable characteristics, protein F2 presents an alternative compound to resist fungal infections caused by R. cerealis.
Collapse
Affiliation(s)
- Xuechao Zhang
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China
| | - Xiaojun Guo
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China
| | - Cuihong Wu
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China
| | - Chengcui Li
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China
| | - Dongdong Zhang
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China.
| | - Baocheng Zhu
- College of Life Science, Hebei Agricultural University, 289 Lingyusi Road, 071001, Baoding, PR China.
| |
Collapse
|
26
|
Wang Y, Liang J, Zhang C, Wang L, Gao W, Jiang J. Bacillus megaterium WL-3 Lipopeptides Collaborate Against Phytophthora infestans to Control Potato Late Blight and Promote Potato Plant Growth. Front Microbiol 2020; 11:1602. [PMID: 32733429 PMCID: PMC7363778 DOI: 10.3389/fmicb.2020.01602] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/18/2020] [Indexed: 11/13/2022] Open
Abstract
Oomycete Phytophthora infestans [(Mont.) de Bary] is the cause of potato late blight, a plant disease which poses a serious threat to our global food security and is responsible for huge economic losses worldwide. Lipopeptides produced by Bacillus species are known to be potent antibacterial compounds against many plant pathogens. In this study, we show that Bacillus megaterium WL-3 has an antagonistic effect against potato late blight. Electrospray ionization mass spectrometry (ESI-MS) revealed that lipopeptides derived from the WL-3 strain contained three subfamilies, surfactin (C13 - C15), Iturin A (C14 - C16), and Fengycin A (C15 - C19). The Iturin A and Fengycin A lipopeptide families were each confirmed to have anti-oomycete effects against P. infestans mycelium growth as well as obvious controlling effects against potato late blight in greenhouse experiments and field assays. Furthermore, Iturin A and Fengycin A were able to promote plant photosynthetic efficiency, plant growth, and potato yield. Most importantly, the combination of Iturin A and Fengycin A (I + F) was superior to individual lipopeptides in controlling potato late blight and in the promotion of plant growth. The results of this study indicate that B. megaterium WL-3 and its lipopeptides are potential candidates for the control of late blight and the promotion of potato plant growth.
Collapse
Affiliation(s)
- Youyou Wang
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Jiao Liang
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Congying Zhang
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Le Wang
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Wenbin Gao
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Jizhi Jiang
- College of Life Science, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| |
Collapse
|
27
|
Surfactin and fengycin B extracted from Bacillus pumilus W-7 provide protection against potato late blight via distinct and synergistic mechanisms. Appl Microbiol Biotechnol 2020; 104:7467-7481. [DOI: 10.1007/s00253-020-10773-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/16/2020] [Accepted: 07/05/2020] [Indexed: 12/01/2022]
|
28
|
Du J, Li Y, Yin Z, Wang H, Zhang X, Ding X. High-Throughput Customization of Plant Microbiomes for Sustainable Agriculture. FRONTIERS IN PLANT SCIENCE 2020; 11:569742. [PMID: 33013992 PMCID: PMC7505944 DOI: 10.3389/fpls.2020.569742] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/18/2020] [Indexed: 05/02/2023]
Abstract
Soil microorganisms can form a stable dynamic system with plant root systems. The composition of the soil microorganism community is related to the growth and stress resistance of plants; in turn, soil microorganisms are also regulated by plant genotypes and root exudates. Therefore, research on how to identify microorganisms that are beneficial or harmful to plants, study the interaction between microorganisms and plants, and form stable microbial communities for better plant growth plays an important role in sustainable agriculture. It is of great significance to identify and analyze rhizosphere microorganisms and plant endophytes through high-throughput methods, especially to analyze which microorganisms are beneficial to plants, which are harmful to plants, and which are opportunistic pathogens. This review provides a theoretical basis and outlook for the utilization of beneficial microbes in sustainable agriculture.
Collapse
Affiliation(s)
- Jianfeng Du
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai’an, China
| | - Yang Li
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai’an, China
| | - Ziyi Yin
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai’an, China
| | - Hongfeng Wang
- Shandong Pengbo Biotechnology Co., Ltd., Tai’an, China
| | | | - Xinhua Ding
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai’an, China
- *Correspondence: Xinhua Ding,
| |
Collapse
|
29
|
Ji X, Li J, Meng Z, Zhang S, Dong B, Qiao K. Synergistic Effect of Combined Application of a New Fungicide Fluopimomide with a Biocontrol Agent Bacillus methylotrophicus TA-1 for Management of Gray Mold in Tomato. PLANT DISEASE 2019; 103:1991-1997. [PMID: 31169087 DOI: 10.1094/pdis-01-19-0143-re] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gray mold caused by Botrytis cinerea can be a severe disease of tomato infecting leaves and fruits of tomato plants. Chemical control is currently the most effective and reliable method; however, application of fungicides has many drawbacks. The combination of biological control agents with newly developed fungicides may be a practicable method to control B. cinerea. Fluopimomide is a newly developed fungicide with a novel mode of action. Bacillus methylotrophicus TA-1, isolated from rhizosphere soil of tomato, is a bacterial strain with a broad spectrum of antimicrobial activities. Little information is currently available about the effect of fluopimomide and its integrated effect on B. cinerea. Therefore, laboratory, pot, and field experiments were carried out to determine the effects of fluopimomide alone and in combination with B. methylotrophicus TA-1 against gray mold on tomato. The in vitro growth of B. methylotrophicus TA-1 was unaffected by 100 mg liter-1 fluopimomide. Inhibition of B. cinerea mycelial growth was significantly increased under combined treatment of fluopimomide and B. methylotrophicus TA-1. In greenhouse experiments, efficacy against gray mold was significantly greater by an integration of fluopimomide and B. methylotrophicus TA-1 than by either alone; control efficacy of fluopimomide at 50 and 100 g ha-1 in combination with B. methylotrophicus TA-1 at 108 colony-forming units (cfu) ml-1 reached 70.16 and 69.32%, respectively, compared with the untreated control. In both field trials during 2017 and 2018, control efficacy was significantly higher for the combination of fluopimomide at 50 and 100 g ha-1 in combination with B. methylotrophicus TA-1 than for either treatment alone. The results from this study indicated that integration of the new fungicide fluopimomide with the biocontrol agent B. methylotrophicus TA-1 synergistically increased control efficacy of the fungicide against gray mold of tomato.
Collapse
Affiliation(s)
- Xiaoxue Ji
- 1Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Jingjing Li
- 1Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Zhen Meng
- 1Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Shouan Zhang
- 2Tropical Research and Education Center, Department of Plant Pathology, University of Florida, Institute of Food and Agricultural Sciences, Homestead, FL 33031, U.S.A
| | - Bei Dong
- 3Jinan Academy of Agricultural Sciences, Jinan, Shandong 250316, China
| | - Kang Qiao
- 1Key Laboratory of Pesticide Toxicology & Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| |
Collapse
|
30
|
Gómez-Godínez LJ, Fernandez-Valverde SL, Martinez Romero JC, Martínez-Romero E. Metatranscriptomics and nitrogen fixation from the rhizoplane of maize plantlets inoculated with a group of PGPRs. Syst Appl Microbiol 2019; 42:517-525. [DOI: 10.1016/j.syapm.2019.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 10/26/2022]
|