1
|
Guha T, Mandal Biswas S. Recent progress in the role of seed endophytic bacteria as plant growth-promoting microorganisms and biocontrol agents. World J Microbiol Biotechnol 2024; 40:218. [PMID: 38806849 DOI: 10.1007/s11274-024-04031-w] [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: 04/16/2024] [Accepted: 05/21/2024] [Indexed: 05/30/2024]
Abstract
The importance of microorganisms residing within the host plant for their growth and health is increasingly acknowledged, yet the significance of microbes associated with seeds, particularly seed endophytic bacteria, remains underestimated. Seeds harbor a wide range of bacteria that can boost the growth and resilience of their host plants against environmental challenges. These endophytic associations also offer advantages for germination and seedling establishment, as seed endophytic bacteria are present during the initial stages of plant growth and development. Furthermore, plants can selectively choose bacteria possessing beneficial traits, which are subsequently transmitted through seeds to confer benefits to future generations. Interestingly, even with the ongoing discovery of endophytes in seeds through high-throughput sequencing methods, certain endophytes remain challenging to isolate and culture from seeds, despite their high abundance. These challenges pose difficulties in studying seed endophytes, making many of their effects on plants unclear. In this article, a framework for understanding the assembly and function of seed endophytes, including their sources and colonization processes was outlined in detail and available research on bacterial endophytes discovered within the seeds of various plant species has also been explored. Thus, this current review aims to provide valuable insights into the mechanism of underlying seed endophytic bacteria-host plant interactions and offers significant recommendations for utilizing the seed endophytic bacteria in sustainable agriculture as plant growth promoters and enhancers of environmental stress tolerance.
Collapse
Affiliation(s)
- Titir Guha
- Agricultural & Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203, Barrackpore Trunk Road, Kolkata, 700 108, India
| | - Suparna Mandal Biswas
- Agricultural & Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, 203, Barrackpore Trunk Road, Kolkata, 700 108, India.
| |
Collapse
|
2
|
Zhao Y, Sun T, Li Y, Yang Z, Chen J, Wang J, Yu X, Tang X, Xiao H. The host sex contributes to the endophytic bacterial community in Sargassum thunbergii and their receptacles. Front Microbiol 2024; 15:1334918. [PMID: 38559345 PMCID: PMC10978810 DOI: 10.3389/fmicb.2024.1334918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/14/2024] [Indexed: 04/04/2024] Open
Abstract
Endophytic bacteria have a complex coevolutionary relationship with their host macroalgae. Dioecious macroalgae are important producers in marine ecosystems, but there is still a lack of research on how sex influences their endophytic bacteria. In this study, the endophytic bacterial communities in male and female S. thunbergii and their reproductive tissues (receptacles) were compared using culture methods and high-throughput sequencing. The endophytic bacterial communities detected by the two methods were different. Among the 78 isolated strains, the dominant phylum, genus, and species were Bacillota, Alkalihalobacillus, and Alkalihalobacillus algicola, respectively, in the algal bodies, while in the receptacles, they were Bacillota, Vibrio, and Vibrio alginolyticus. However, 24 phyla and 349 genera of endophytic bacteria were identified by high-throughput sequencing, and the dominant phylum and genus were Pseudomonadota and Sva0996_ Marine_ Group, respectively, in both the algal body and the receptacles. The two methods showed similar compositions of endophytic bacterial communities between the samples of different sexes, but the relative abundances of dominant and specific taxa were different. The high-throughput sequencing results showed more clearly that the sex of the host alga had an effect on its endophyte community assembly and a greater effect on the endophytic bacterial community in the receptacles. Moreover, most specific bacteria and predicted functional genes that differed between the samples from the males and females were related to metabolism, suggesting that metabolic differences are the main causes of sex differences in the endophytic bacterial community. Our research is the first to show that host sex contributes to the composition of endophytic bacterial communities in dioecious marine macroalgae. The results enrich the database of endophytic bacteria of dioecious marine macroalgae and pave the way for better understanding the assembly mechanism of the endophytic bacterial community of algae.
Collapse
Affiliation(s)
- Yayun Zhao
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Tao Sun
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Qingdao Branch CCCC Water Transportation Consultants Co.,LTD, Qingdao, China
| | - Yang Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Shandong Marine Forecast and Hazard Mitigation Service, Qingdao, China
| | - Zhibo Yang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jun Chen
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jing Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xinlong Yu
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xuexi Tang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Hui Xiao
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, China
| |
Collapse
|
3
|
Tamang A, Kaur A, Thakur D, Thakur A, Thakur BK, Shivani, Swarnkar M, Pal PK, Hallan V, Pandey SS. Unraveling endophytic diversity in dioecious Siraitia grosvenorii: implications for mogroside production. Appl Microbiol Biotechnol 2024; 108:247. [PMID: 38427084 PMCID: PMC10907472 DOI: 10.1007/s00253-024-13076-8] [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: 08/10/2023] [Revised: 01/04/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Host and tissue-specificity of endophytes are important attributes that limit the endophyte application on multiple crops. Therefore, understanding the endophytic composition of the targeted crop is essential, especially for the dioecious plants where the male and female plants are different. Here, efforts were made to understand the endophytic bacterial composition of the dioecious Siraitia grosvenorii plant using 16S rRNA amplicon sequencing. The present study revealed the association of distinct endophytic bacterial communities with different parts of male and female plants. Roots of male and female plants had a higher bacterial diversity than other parts of plants, and the roots of male plants had more bacterial diversity than the roots of female plants. Endophytes belonging to the phylum Proteobacteria were abundant in all parts of male and female plants except male stems and fruit pulp, where the Firmicutes were most abundant. Class Gammaproteobacteria predominated in both male and female plants, with the genus Acinetobacter as the most dominant and part of the core microbiome of the plant (present in all parts of both, male and female plants). The presence of distinct taxa specific to male and female plants was also identified. Macrococcus, Facklamia, and Propionibacterium were the distinct genera found only in fruit pulp, the edible part of S. grosvenorii. Predictive functional analysis revealed the abundance of enzymes of secondary metabolite (especially mogroside) biosynthesis in the associated endophytic community with predominance in roots. The present study revealed bacterial endophytic communities of male and female S. grosvenorii plants that can be further explored for monk fruit cultivation, mogroside production, and early-stage identification of male and female plants. KEY POINTS: • Male and female Siraitia grosvenorii plants had distinct endophytic communities • The diversity of endophytic communities was specific to different parts of plants • S. grosvenorii-associated endophytes may be valuable for mogroside biosynthesis and monk fruit cultivation.
Collapse
Affiliation(s)
- Anish Tamang
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Amanpreet Kaur
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
| | - Deepali Thakur
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
| | - Ankita Thakur
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Babit Kumar Thakur
- Agrotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shivani
- Agrotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Mohit Swarnkar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
| | - Probir K Pal
- Agrotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Vipin Hallan
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shiv Shanker Pandey
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, 176061, HP, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
4
|
Wang Z, Li N, Wang W, Zhu Y, Liu Y. Endophytic bacterial community diversity in genetically related hybrid rice seeds. Appl Microbiol Biotechnol 2023; 107:6911-6922. [PMID: 37704771 DOI: 10.1007/s00253-023-12782-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/04/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023]
Abstract
The Food and Agriculture Organization of the United Nations (FAO) has identified hybrid rice as ideal for addressing food scarcity in poor nations. A comprehensive investigation of the endophytic bacteria in hybrid rice seeds is essential from a microecological perspective to illuminate the mechanisms underlying its high yield, high quality, and multi-resistance. The endophytic bacterial diversity and community structures of 11 genetically correlated hybrid rice seeds with different rice blast resistance levels were studied using high-throughput sequencing (HTS) on the Illumina MiSeq platform to reveal their "core microbiota" and explore the effect of genotypes, genetic relationships, and resistance. Proteobacteria (78.15-99.15%) represented the most abundant group in the 11 hybrid rice cultivars, while Pantoea, Pseudomonas, and Microbacterium comprised the "core microbiota." Hybrid rice seeds with different genotypes, genetic correlations, and rice blast resistance displayed endophytic bacterial community structure and diversity variation. In addition, the network relationships between the rice seed endophytic bacteria of "the same female parent but different male parents" were more complex than those from "the same male parent but different female parents." Matrilineal inheritance may be the primary method of passing on endophytic bacteria in rice from generation to generation. The endophytic bacterial interaction network in rice blast-resistant hybrid rice seed varieties was more complicated than in susceptible varieties. In summary, this study demonstrated that the genotype, genetic relationship, and rice blast resistance were important factors affecting the community structures and diversity of endophytic bacteria in hybrid rice seeds, which was vital for revealing the interaction between endophytic bacteria and the host. KEY POINTS: • Pantoea, Pseudomonas, and Microbacterium represent the main endophytic bacteria in hybrid rice seeds. • Genotype is the primary factor affecting endophytic bacterial diversity in hybrid rice seeds. • The diversity of the endophytic bacterial community in hybrid rice seeds is related to their genotypes, genetic relationships, and rice blast resistance.
Collapse
Affiliation(s)
- Zhishan Wang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ni Li
- State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Center), Changsha, 410125, China
| | - Weiping Wang
- State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Center), Changsha, 410125, China.
| | - Yongqiang Zhu
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai, 201203, China.
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| |
Collapse
|
5
|
Wallace JG. Maize seed endophytes. MOLECULAR PLANT PATHOLOGY 2023; 24:801-810. [PMID: 36416063 DOI: 10.1111/mpp.13278] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/29/2022] [Accepted: 10/20/2022] [Indexed: 06/11/2023]
Abstract
Maize is a vital global crop, and each seed (kernel) hosts an ecosystem of microbes living inside it. However, we know very little about these endophytes and what their role is in plant production and physiology. In this Microreview, I summarize the major questions around maize seed endophytes, including what organisms are present, how they get there, whether and how they transmit across generations, and how they and the plant affect each other. Although several studies touch on each of these areas, ultimately there are far more questions than answers. Future priorities for research on maize seed endophytes should include understanding what adaptations allow microbes to be seed endophytes, how the host genetics and the environment affect these communities, and how maize seed endophytes ultimately contribute to the next generation of plants.
Collapse
Affiliation(s)
- Jason G Wallace
- Department of Crop & Soil Science, University of Georgia, Athens, Georgia, USA
| |
Collapse
|
6
|
Oliveira NC, Rodrigues PAP, Cônsoli FL. Host-Adapted Strains of Spodoptera frugiperda Hold and Share a Core Microbial Community Across the Western Hemisphere. MICROBIAL ECOLOGY 2023; 85:1552-1563. [PMID: 35426077 DOI: 10.1007/s00248-022-02008-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 04/04/2022] [Indexed: 05/10/2023]
Abstract
The fall armyworm Spodoptera frugiperda is an important polyphagous agricultural pest in the Western Hemisphere and currently invasive to countries of the Eastern Hemisphere. This species has two host-adapted strains named "rice" and "corn" strains. Our goal was to identify the occurrence of core members in the gut bacterial community of fall armyworm larvae from distinct geographical distribution and/or host strain. We used next-generation sequencing to identify the microbial communities of S. frugiperda from corn fields in Brazil, Colombia, Mexico, Panama, Paraguay, and Peru, and rice fields from Panama. The larval gut microbiota of S. frugiperda larvae did not differ between the host strains nor was it affected by the geographical distribution of the populations investigated. Our findings provide additional support for Enterococcus and Pseudomonas as core members of the bacterial community associated with the larval gut of S. frugiperda, regardless of the site of collection or strain. Further investigations are required for a deeper understanding of the nature of this relationship.
Collapse
Affiliation(s)
- Nathalia C Oliveira
- Insect Interactions Laboratory, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Pedro A P Rodrigues
- Insect Interactions Laboratory, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Fernando L Cônsoli
- Insect Interactions Laboratory, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil.
| |
Collapse
|
7
|
Ayilara MS, Adeleke BS, Babalola OO. Bioprospecting and Challenges of Plant Microbiome Research for Sustainable Agriculture, a Review on Soybean Endophytic Bacteria. MICROBIAL ECOLOGY 2023; 85:1113-1135. [PMID: 36319743 PMCID: PMC10156819 DOI: 10.1007/s00248-022-02136-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 10/24/2022] [Indexed: 05/04/2023]
Abstract
This review evaluates oilseed crop soybean endophytic bacteria, their prospects, and challenges for sustainable agriculture. Soybean is one of the most important oilseed crops with about 20-25% protein content and 20% edible oil production. The ability of soybean root-associated microbes to restore soil nutrients enhances crop yield. Naturally, the soybean root endosphere harbors root nodule bacteria, and endophytic bacteria, which help increase the nitrogen pool and reclamation of another nutrient loss in the soil for plant nutrition. Endophytic bacteria can sustain plant growth and health by exhibiting antibiosis against phytopathogens, production of enzymes, phytohormone biosynthesis, organic acids, and secondary metabolite secretions. Considerable effort in the agricultural industry is focused on multifunctional concepts and bioprospecting on the use of bioinput from endophytic microbes to ensure a stable ecosystem. Bioprospecting in the case of this review is a systemic overview of the biorational approach to harness beneficial plant-associated microbes to ensure food security in the future. Progress in this endeavor is limited by available techniques. The use of molecular techniques in unraveling the functions of soybean endophytic bacteria can explore their use in integrated organic farming. Our review brings to light the endophytic microbial dynamics of soybeans and current status of plant microbiome research for sustainable agriculture.
Collapse
Affiliation(s)
- Modupe Stella Ayilara
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Bartholomew Saanu Adeleke
- Department of Biological Sciences, Microbiology Unit, Faculty of Science, Olusegun Agagu University of Science and Technology, PMB 353, Okitipupa, Nigeria
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
| |
Collapse
|
8
|
Yang M, Qi Y, Liu J, Wu Z, Gao P, Chen Z, Huang F, Yu L. Dynamic changes in the endophytic bacterial community during maturation of Amorphophallus muelleri seeds. Front Microbiol 2022; 13:996854. [PMID: 36225382 PMCID: PMC9549114 DOI: 10.3389/fmicb.2022.996854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
The seed microbiota is considered to be the starting point of the accumulation of plant microbiota, which is conducive to the preservation and germination of seeds and the establishment and development of seedlings. Our understanding of the colonization and migration dynamics of microbial taxa during seed development and maturation is still limited. This study used 16S rRNA high-throughput sequencing to investigate the dynamic changes in the composition and diversity of the endophytic bacterial community during maturation of Amorphophallus muelleri seeds. The results showed that as seeds matured (green to red), the Shannon index of their endophytic bacterial community first decreased and then increased, and the ACE and Chao1 indices of the endophytic bacterial community decreased gradually. The Shannon, ACE, and Chao1 indices of the endophytic bacterial community in the seed coat first decreased and then increased. Principal coordinate analysis of the bacterial communities revealed that the seed coat at different maturity stages showed significantly distinct bacterial communities and formed different clusters according to maturity stage. The bacterial communities of green and red seeds showed a clear separation, but they both overlapped with those of yellow seeds, indicating that some core taxa were present throughout seed maturation, but their relative abundance was dynamically changing. As the seeds grew more mature, the relative abundance of some bacterial communities with plant growth-promoting traits and others correlated with plant resistance (e.g., Burkholderia-Caballeronia-Paraburkholderia, Bacillus, Pseudomonas, Bradyrhizobium, Streptomyces) tended to increase and peaked in fully mature seeds and seed coats. The endophytic bacterial community of A. muelleri seeds seems to be driven by the seed maturation state, which can provide a theoretical basis for a comprehensive understanding of the assembly process of the microbial community during A. muelleri seed maturation.
Collapse
Affiliation(s)
- Min Yang
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
- College of Plant Protection, Yunnan Agricultural University, Kunming, China
| | - Ying Qi
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
| | - Jiani Liu
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
| | - Zhixing Wu
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
| | - Penghua Gao
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
| | - Zebin Chen
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
| | - Feiyan Huang
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
- *Correspondence: Feiyan Huang,
| | - Lei Yu
- Yunnan Urban Agricultural Engineering and Technological Research Center, College of Agronomy, Kunming University, Kunming, China
- Lei Yu,
| |
Collapse
|
9
|
Bergmann GE, Leveau JHJ. A metacommunity ecology approach to understanding microbial community assembly in developing plant seeds. Front Microbiol 2022; 13:877519. [PMID: 35935241 PMCID: PMC9355165 DOI: 10.3389/fmicb.2022.877519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Microorganisms have the potential to affect plant seed germination and seedling fitness, ultimately impacting plant health and community dynamics. Because seed-associated microbiota are highly variable across individual plants, plant species, and environments, it is challenging to identify the dominant processes that underlie the assembly, composition, and influence of these communities. We propose here that metacommunity ecology provides a conceptually useful framework for studying the microbiota of developing seeds, by the application of metacommunity principles of filtering, species interactions, and dispersal at multiple scales. Many studies in seed microbial ecology already describe individual assembly processes in a pattern-based manner, such as correlating seed microbiome composition with genotype or tracking diversity metrics across treatments in dispersal limitation experiments. But we see a lot of opportunities to examine understudied aspects of seed microbiology, including trait-based research on mechanisms of filtering and dispersal at the micro-scale, the use of pollination exclusion experiments in macro-scale seed studies, and an in-depth evaluation of how these processes interact via priority effect experiments and joint species distribution modeling.
Collapse
|
10
|
Wu X, Wang Z, Zhang R, Xu T, Zhao J, Liu Y. Diversity of endophytic bacteria in hybrid maize seeds and Bacillus mojavensis J2416-7 may be capable of vertical transmission. Arch Microbiol 2022; 204:213. [PMID: 35305158 DOI: 10.1007/s00203-022-02824-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 11/25/2022]
Abstract
The diversity of endophytic bacteria in the progeny is related to the parental lines. In this study, the traditional separation method was used to study the dominant endophytic bacteria of the shared paternal line and its pollen, different maternal lines and their F1 progeny. And the results showed that the dominant endophytic bacteria in maize seeds and the pollen were Bacillus and Pantoea. The Bacillus diversity of the progeny JMC121 and JN728 were the same as both the paternal line and the maternal line, including Bacillus subtilis, Bacillus velezensis, Bacillus mojavensis, and Bacillus licheniformis. The Bacillus subtilis and Bacillus velezensis in JN828 were the same as both the paternal line and the maternal line, while Bacillus licheniformis was only the same as the paternal line. Through the RAPD molecular typing, there was the same strain of Bacillus mojavensis existed in the paternal line J2416, the pollen and the progeny JN728; this meant that the paternal line passed its dominant endophytic bacteria to the progeny through pollen in vertical transmission. This study showed that the dominant endophytic bacteria in maize seeds and the pollen were Bacillus, and the diversity of F1 progeny was related to both the paternal line and the maternal line.
Collapse
Affiliation(s)
- Xianyu Wu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhishan Wang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ruyang Zhang
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Tianjun Xu
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Jiuran Zhao
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| |
Collapse
|
11
|
Moreira ZPM, Helgason BL, Germida JJ. Assembly and potential transmission of the lens culinaris seed microbiome. FEMS Microbiol Ecol 2021; 97:6484792. [PMID: 34958355 DOI: 10.1093/femsec/fiab166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/22/2021] [Indexed: 11/12/2022] Open
Abstract
Soil is an important source of bacteria and fungi for the plant, but seeds can also provide microbial inocula through heritable or stochastic assembly. Seed-associated microbial communities can potentially interact with the host plant through multiple generations. Here, we assessed the impact of two different soil types on the seed microbiome assembly of seven lentil (Lens culinaris) genotypes under environmentally controlled conditions and examined the vertical transmission of bacterial communities from seed to seed across two generations. Bulk soil microbiomes and seed microbiomes were characterized using high-throughput amplicon sequencing of the bacterial 16S rRNA gene. Our results revealed that bacterial communities in the two soils differed significantly and that bacterial communities associated with seeds were significantly impacted by genotype (15%) in one of the soils. Co-occurrence of amplicon sequence variants (ASVs) between generations suggests members of the genera Cutibacterium, Methylobacterium, Sphingomonas, Streptococcus, and Tepidimonas are transmitted and preserved in lentil genotypes irrespective of the soil in which they were grown. Increasing our knowledge of how microbial communities carried by seeds are assembled, transmitted, and preserved offers a promising way for future breeding programs to consider microbial communities when selecting for more resilient and productive cultivars.
Collapse
Affiliation(s)
- Zayda P Morales Moreira
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada.,Department of Microbiology and Immunology, The University of British Columbia, Vancouver, BC, Canada
| | - Bobbi L Helgason
- Department of Soil Science, University of Saskatchewan, Saskatoon, SK, Canada
| | - James J Germida
- Department of Soil Science, University of Saskatchewan, Saskatoon, SK, Canada
| |
Collapse
|
12
|
Domestication affects the composition, diversity, and co-occurrence of the cereal seed microbiota. J Adv Res 2020; 31:75-86. [PMID: 34194833 PMCID: PMC8240117 DOI: 10.1016/j.jare.2020.12.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 12/14/2020] [Indexed: 12/15/2022] Open
Abstract
Introduction The seed-associated microbiome has a strong influence on plant ecology, fitness, and productivity. Plant microbiota could be exploited for a more responsible crop management in sustainable agriculture. However, the relationships between seed microbiota and hosts related to the changes from ancestor species to breeded crops still remain poor understood. Objectives Our aims were i) to understand the effect of cereal domestication on seed endophytes in terms of diversity, structure and co-occurrence, by comparing four cereal crops and the respective ancestor species; ii) to test the phylogenetic coherence between cereals and their seed microbiota (clue of co-evolution). Methods We investigated the seed microbiota of four cereal crops (Triticum aestivum, Triticum monococcum, Triticum durum, and Hordeum vulgare), along with their respective ancestors (Aegilops tauschii, Triticum baeoticum, Triticum dicoccoides, and Hordeum spontaneum, respectively) using 16S rRNA gene metabarcoding, Randomly Amplified Polymorphic DNA (RAPD) profiling of host plants and co-evolution analysis. Results The diversity of seed microbiota was generally higher in cultivated cereals than in wild ancestors, suggesting that domestication lead to a bacterial diversification. On the other hand, more microbe-microbe interactions were detected in wild species, indicating a better-structured, mature community. Typical human-associated taxa, such as Cutibacterium, dominated in cultivated cereals, suggesting an interkingdom transfers of microbes from human to plants during domestication. Co-evolution analysis revealed a significant phylogenetic congruence between seed endophytes and host plants, indicating clues of co-evolution between hosts and seed-associated microbes during domestication. Conclusion This study demonstrates a diversification of the seed microbiome as a consequence of domestication, and provides clues of co-evolution between cereals and their seed microbiota. This knowledge is useful to develop effective strategies of microbiome exploitation for sustainable agriculture.
Collapse
|