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Gómez-Álvarez EM, Salardi-Jost M, Ahumada GD, Perata P, Dell'Acqua M, Pucciariello C. Seed bacterial microbiota in post-submergence tolerant and sensitive barley genotypes. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23166. [PMID: 38266278 DOI: 10.1071/fp23166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024]
Abstract
Flooding is a predominant abiotic stress for cultivated plants, including barley. This cereal crop shows a large adaptability to different environmental conditions, suggesting the presence of key traits to tolerate adverse conditions. During germination, genetic variations account for dissimilarities in flooding tolerance. However, differences in the seed microbiota may also contribute to tolerance/sensitivity during seedling establishment. This work investigated differences in microbiome among the grains of barley accessions. Two barley phenotypes were compared, each either tolerant or sensitive to a short submergence period followed by a recovery. The study used a metataxonomic analysis based on 16S ribosomal RNA gene sequencing and subsequent functional prediction. Our results support the hypothesis that bacterial microbiota inhabiting the barley seeds are different between sensitive and tolerant barley accessions, which harbour specific bacterial phyla and families. Finally, bacteria detected in tolerant barley accessions show a peculiar functional enrichment that suggests a possible connection with successful germination and seedling establishment.
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Affiliation(s)
| | | | | | | | - Matteo Dell'Acqua
- Genetics Lab, Center of Plant Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
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Moore GG, Chalivendra S, Mack BM, Gilbert MK, Cary JW, Rajasekaran K. Microbiota of maize kernels as influenced by Aspergillus flavus infection in susceptible and resistant inbreds. Front Microbiol 2023; 14:1291284. [PMID: 38029119 PMCID: PMC10657875 DOI: 10.3389/fmicb.2023.1291284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Background Nearly everything on Earth harbors a microbiome. A microbiome is a community of microbes (bacteria, fungi, and viruses) with potential to form complex networks that involve mutualistic and antagonistic interactions. Resident microbiota on/in an organism are determined by the external environment, both biotic and abiotic, and the intrinsic adaptability of each organism. Although the maize microbiome has been characterized, community changes that result from the application of fungal biocontrol strains, such as non-aflatoxigenic Aspergillus flavus, have not. Methods We silk channel inoculated field-grown maize separately with a non-aflatoxigenic biocontrol strain (K49), a highly toxigenic strain (Tox4), and a combination of both A. flavus strains. Two maize inbreds were treated, A. flavus-susceptible B73 and A. flavus-resistant CML322. We then assessed the impacts of A. flavus introduction on the epibiota and endobiota of their maize kernels. Results We found that the native microbial communities were significantly affected, irrespective of genotype or sampled tissue. Overall, bacteriomes exhibited greater diversity of genera than mycobiomes. The abundance of certain genera was unchanged by treatment, including genera of bacteria (e.g., Enterobacter, Pantoea) and fungi (e.g., Sarocladium, Meyerozyma) that are known to be beneficial, antagonistic, or both on plant growth and health. Conclusion Beneficial microbes like Sarocladium that responded well to A. flavus biocontrol strains are expected to enhance biocontrol efficacy, while also displacing/antagonizing harmful microbes.
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Affiliation(s)
- Geromy G. Moore
- Southern Regional Research Center, USDA-ARS, New Orleans, LA, United States
| | - Subbaiah Chalivendra
- Department of Plant Pathology and Crop Physiology, College of Agriculture, Louisiana State University, Baton Rouge, LA, United States
| | - Brian M. Mack
- Southern Regional Research Center, USDA-ARS, New Orleans, LA, United States
| | - Matthew K. Gilbert
- Southern Regional Research Center, USDA-ARS, New Orleans, LA, United States
| | - Jeffrey W. Cary
- Southern Regional Research Center, USDA-ARS, New Orleans, LA, United States
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Monteiro FAC, Bezerra SGDS, Castro LGZD, Oliveira FADS, Normando LRO, Melo VMM, Hissa DC. Neotropical Frog Foam Nest’s Microbiomes. Microorganisms 2023; 11:microorganisms11040900. [PMID: 37110323 PMCID: PMC10146838 DOI: 10.3390/microorganisms11040900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Amphibian foam nests are unique microenvironments that play a crucial role in the development of tadpoles. They contain high levels of proteins and carbohydrates, yet little is known about the impact of their microbiomes on tadpole health. This study provides a first characterization of the microbiome of foam nests from three species of Leptodactylids (Adenomera hylaedactyla, Leptodactylus vastus, and Physalaemus cuvieri) by investigating the DNA extracted from foam nests, adult tissues, soil, and water samples, analyzed via 16S rRNA gene amplicon sequencing to gain insight into the factors driving its composition. The results showed that the dominant phyla were proteobacteria, bacteroidetes, and firmicutes, with the most abundant genera being Pseudomonas, Sphingobacterium, and Paenibacillus. The foam nest microbiomes of A. hylaedactyla and P. cuvieri were more similar to each other than to that of L. vastus, despite their phylogenetic distance. The foam nests demonstrated a distinct microbiome that clustered together and separated from the microbiomes of the environment and adult tissue samples. This suggests that the peculiar foam nest composition shapes its microbiome, rather than vertical or horizontal transference forces. We expanded this knowledge into amphibian foam nest microbiomes, highlighting the importance of preserving healthy foam nests for amphibian conservation.
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LaMontagne MG, Tran PL, Benavidez A, Morano LD. Development of an inexpensive matrix-assisted laser desorption-time of flight mass spectrometry method for the identification of endophytes and rhizobacteria cultured from the microbiome associated with maize. PeerJ 2021; 9:e11359. [PMID: 34123583 PMCID: PMC8166240 DOI: 10.7717/peerj.11359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/06/2021] [Indexed: 12/14/2022] Open
Abstract
Many endophytes and rhizobacteria associated with plants support the growth and health of their hosts. The vast majority of these potentially beneficial bacteria have yet to be characterized, in part because of the cost of identifying bacterial isolates. Matrix-assisted laser desorption-time of flight (MALDI-TOF) has enabled culturomic studies of host-associated microbiomes but analysis of mass spectra generated from plant-associated bacteria requires optimization. In this study, we aligned mass spectra generated from endophytes and rhizobacteria isolated from heritage and sweet varieties of Zea mays. Multiple iterations of alignment attempts identified a set of parameters that sorted 114 isolates into 60 coherent MALDI-TOF taxonomic units (MTUs). These MTUs corresponded to strains with practically identical (>99%) 16S rRNA gene sequences. Mass spectra were used to train a machine learning algorithm that classified 100% of the isolates into 60 MTUs. These MTUs provided >70% coverage of aerobic, heterotrophic bacteria readily cultured with nutrient rich media from the maize microbiome and allowed prediction of the total diversity recoverable with that particular cultivation method. Acidovorax sp., Pseudomonas sp. and Cellulosimicrobium sp. dominated the library generated from the rhizoplane. Relative to the sweet variety, the heritage variety c ontained a high number of MTUs. The ability to detect these differences in libraries, suggests a rapid and inexpensive method of describing the diversity of bacteria cultured from the endosphere and rhizosphere of maize.
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Affiliation(s)
- Michael G LaMontagne
- Department of Biology and Biotechnology, University of Houston, Clear Lake, Houston, Texas, United States
| | - Phi L Tran
- Department of Biology and Biotechnology, University of Houston, Clear Lake, Houston, Texas, United States
| | - Alexander Benavidez
- Department of Natural Sciences, University of Houston, Downtown, Houston, Texas, United States
| | - Lisa D Morano
- Department of Natural Sciences, University of Houston, Downtown, Houston, Texas, United States
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Ma B, Wang Y, Ye S, Liu S, Stirling E, Gilbert JA, Faust K, Knight R, Jansson JK, Cardona C, Röttjers L, Xu J. Earth microbial co-occurrence network reveals interconnection pattern across microbiomes. MICROBIOME 2020; 8:82. [PMID: 32498714 PMCID: PMC7273686 DOI: 10.1186/s40168-020-00857-2] [Citation(s) in RCA: 162] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 05/07/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND Microbial interactions shape the structure and function of microbial communities; microbial co-occurrence networks in specific environments have been widely developed to explore these complex systems, but their interconnection pattern across microbiomes in various environments at the global scale remains unexplored. Here, we have inferred an Earth microbial co-occurrence network from a communal catalog with 23,595 samples and 12,646 exact sequence variants from 14 environments in the Earth Microbiome Project dataset. RESULTS This non-random scale-free Earth microbial co-occurrence network consisted of 8 taxonomy distinct modules linked with different environments, which featured environment specific microbial co-occurrence relationships. Different topological features of subnetworks inferred from datasets trimmed into uniform size indicate distinct co-occurrence patterns in the microbiomes of various environments. The high number of specialist edges highlights that environmental specific co-occurrence relationships are essential features across microbiomes. The microbiomes of various environments were clustered into two groups, which were mainly bridged by the microbiomes of plant and animal surface. Acidobacteria Gp2 and Nisaea were identified as hubs in most of subnetworks. Negative edges proportions ranged from 1.9% in the soil subnetwork to 48.9% the non-saline surface subnetwork, suggesting various environments experience distinct intensities of competition or niche differentiation. Video abstract CONCLUSION: This investigation highlights the interconnection patterns across microbiomes in various environments and emphasizes the importance of understanding co-occurrence feature of microbiomes from a network perspective.
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Affiliation(s)
- Bin Ma
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou, 310058, China
| | - Yiling Wang
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China
| | - Shudi Ye
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China
| | - Shan Liu
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China
| | - Erinne Stirling
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou, 310058, China
| | - Jack A Gilbert
- Department of Pediatrics and Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Karoline Faust
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Campus Gasthuisberg, Leuven, Belgium
| | - Rob Knight
- Departments of Pediatrics, Computer Science and Engineering, and BioEngineering, University of California San Diego, La Jolla, CA, USA
| | - Janet K Jansson
- Biological Sciences Division, Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - Cesar Cardona
- Graduate Program in Biophysical Sciences, The University of Chicago, Chicago, 60637, IL, USA
| | - Lisa Röttjers
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Campus Gasthuisberg, Leuven, Belgium
| | - Jianming Xu
- College of Environmental and Resource Sciences, Zhejiang University, Institute of Soil and Water Resources and Environmental Science, Hangzhou, 310058, China.
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou, 310058, China.
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Endophytic microbes: biodiversity, plant growth-promoting mechanisms and potential applications for agricultural sustainability. Antonie van Leeuwenhoek 2020; 113:1075-1107. [PMID: 32488494 DOI: 10.1007/s10482-020-01429-y] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022]
Abstract
Endophytic microbes are known to live asymptomatically inside their host throughout different stages of their life cycle and play crucial roles in the growth, development, fitness, and diversification of plants. The plant-endophyte association ranges from mutualism to pathogenicity. These microbes help the host to combat a diverse array of biotic and abiotic stressful conditions. Endophytic microbes play a major role in the growth promotion of their host by solubilizing of macronutrients such as phosphorous, potassium, and zinc; fixing of atmospheric nitrogen, synthesizing of phytohormones, siderophores, hydrogen cyanide, ammonia, and act as a biocontrol agent against wide array of phytopathogens. Endophytic microbes are beneficial to plants by directly promoting their growth or indirectly by inhibiting the growth of phytopathogens. Over a long period of co-evolution, endophytic microbes have attained the mechanism of synthesis of various hydrolytic enzymes such as pectinase, xylanases, cellulase, and proteinase which help in the penetration of endophytic microbes into tissues of plants. The effective usage of endophytic microbes in the form of bioinoculants reduce the usage of chemical fertilizers. Endophytic microbes belong to different phyla such as Actinobacteria, Acidobacteria, Bacteroidetes, Deinococcus-thermus, Firmicutes, Proteobacteria, and Verrucomicrobia. The most predominant and studied endophytic bacteria belonged to Proteobacteria followed by Firmicutes and then by Actinobacteria. The most dominant among reported genera in most of the leguminous and non-leguminous plants are Bacillus, Pseudomonas, Fusarium, Burkholderia, Rhizobium, and Klebsiella. In future, endophytic microbes have a wide range of potential for maintaining health of plant as well as environmental conditions for agricultural sustainability. The present review is focused on endophytic microbes, their diversity in leguminous as well as non-leguminous crops, biotechnological applications, and ability to promote the growth of plant for agro-environmental sustainability.
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Cheng JF, Guo JX, Bian YN, Chen ZL, Li CL, Li XD, Li YH. Sphingobacterium athyrii sp. nov., a cellulose- and xylan-degrading bacterium isolated from a decaying fern (Athyrium wallichianum Ching). Int J Syst Evol Microbiol 2019; 69:752-760. [DOI: 10.1099/ijsem.0.003231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Jian Fei Cheng
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Jie Xi Guo
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
- 2College of Teacher Education, Capital Normal University, Beijing 100048, PR China
| | - Yan Nan Bian
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Zhi Ling Chen
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Chun Li Li
- 3New Technique Centre, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xue Dong Li
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Yan Hong Li
- 1College of Life Sciences, Capital Normal University, Beijing 100048, PR China
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Sphingobacterium praediipecoris sp. nov. isolated from effluent of a dairy manure treatment plant. Arch Microbiol 2018; 200:1481-1486. [PMID: 30159757 DOI: 10.1007/s00203-018-1566-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/03/2018] [Accepted: 08/24/2018] [Indexed: 10/28/2022]
Abstract
A novel Gram-reaction-negative, rod-shaped, non-motile bacterium, designated as strain G2-10T was isolated from effluent of a dairy manure treatment plant. Growth occurred at 20-40 °C (optimum at 25-30 °C), pH 7.0-8.0 (optimum at pH 7.0). The range of NaCl concentration for growth was between 0% and 3% (w/v) (optimum 0-1%, w/v). Comparison of 16S rRNA gene sequence indicated that strain G2-10T was moderately related to the type strains of Sphingobacterium nematocida M-SX103T and Sphingobacterium suaedae T47T with a pair-wise sequence similarity of 94.3% and 94.0%, respectively. The major fatty acid constituents of strain G2-10T were identified as iso-C15:0 (37.6%), summed feature 3 (consisting of C16:1ω7c and/or C16:1ω6c, 29.6%) and iso-C17:0 3-OH (15.2%). Phosphatidylethanolamine was the major polar lipids of strain G2-10T. Sphingophospholipids were present. The isoprenoid quinone was composed of only MK-7. The DNA G + C content of strain G2-10T was found to be 42.5 mol%. The phenotypic, chemotaxonomic and phylogenetic properties suggest that strain G2-10T represents a novel species within the genus Sphingobacterium, for which the name Sphingobacterium praediipecoris is proposed. The type strain is G2-10T (= KCTC 52880T = NBRC 112848T).
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9
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Niu X, Cui W, Cui M, Zhang X, Zhang S, Xu B, Gao M. Sphingobacterium solani sp. nov., isolated from potato stems. Int J Syst Evol Microbiol 2018; 68:1012-1017. [DOI: 10.1099/ijsem.0.002605] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Xinbin Niu
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Weiguo Cui
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Man Cui
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Xiaoxia Zhang
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Shuqing Zhang
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Bingliang Xu
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Miao Gao
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
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Huys G, Purohit P, Tan CH, Snauwaert C, Vos PD, Saffar HA, Obaid IA, Busse HJ, Seemann T, John Albert M. Sphingobacterium cellulitidis sp. nov., isolated from clinical and environmental sources. Int J Syst Evol Microbiol 2017; 67:1415-1421. [DOI: 10.1099/ijsem.0.001832] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Geert Huys
- Laboratory of Microbiology & BCCM Bacteria Collection, Faculty of Sciences, Ghent University, Gent, Belgium
| | | | - Chuan Hao Tan
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore
| | - Cindy Snauwaert
- Laboratory of Microbiology & BCCM Bacteria Collection, Faculty of Sciences, Ghent University, Gent, Belgium
| | - Paul De Vos
- Laboratory of Microbiology & BCCM Bacteria Collection, Faculty of Sciences, Ghent University, Gent, Belgium
| | - Huda Al Saffar
- Assad Al Hamad Dermatology Center, Al-Sabah Hospital, Kuwait
| | - Ina'am Al Obaid
- Department of Medical Microbiology, Al-Sabah Hospital, Kuwait
| | - Hans-Jürgen Busse
- Institut für Mikrobiologie, Veterinärmedizinische Universität Wien, Wien, Austria
| | - Torsten Seemann
- Victorian Life Sciences Computation Initiative, The University of Melbourne, Victoria, Australia
| | - M John Albert
- Department of Microbiology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
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Lai WA, Hameed A, Liu YC, Hsu YH, Lin SY, Young CC. Sphingobacterium cibi sp. nov., isolated from the food-waste compost and emended descriptions of Sphingobacterium spiritivorum (Holmes et al. 1982) Yabuuchi et al. 1983 and Sphingobacterium
thermophilum Yabe et al. 2013. Int J Syst Evol Microbiol 2016; 66:5336-5344. [DOI: 10.1099/ijsem.0.001517] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Wei-An Lai
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan, ROC
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Asif Hameed
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
| | - You-Cheng Liu
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Yi-Han Hsu
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Shih-Yao Lin
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Chiu-Chung Young
- Department of Soil and Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan, ROC
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan, ROC
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