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Jaskolowski A, Poirier Y. Phosphate deficiency increases plant susceptibility to Botrytis cinerea infection by inducing the abscisic acid pathway. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:828-843. [PMID: 38804074 DOI: 10.1111/tpj.16800] [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: 10/04/2023] [Accepted: 04/18/2024] [Indexed: 05/29/2024]
Abstract
Plants have evolved finely regulated defense systems to counter biotic and abiotic threats. In the natural environment, plants are typically challenged by simultaneous stresses and, amid such conditions, crosstalk between the activated signaling pathways becomes evident, ultimately altering the outcome of the defense response. As an example of combined biotic and abiotic stresses, inorganic phosphate (Pi) deficiency, common in natural and agricultural environments, can occur along with attack by the fungus Botrytis cinerea, a devastating necrotrophic generalist pathogen responsible for massive crop losses. We report that Pi deficiency in Arabidopsis thaliana increases its susceptibility to infection by B. cinerea by influencing the early stages of pathogen infection, namely spore adhesion and germination on the leaf surface. Remarkably, Pi-deficient plants are more susceptible to B. cinerea despite displaying the appropriate activation of the jasmonic acid and ethylene signaling pathways, as well as producing secondary defense metabolites and reactive oxygen species. Conversely, the callose deposition in response to B. cinerea infection is compromised under Pi-deficient conditions. The levels of abscisic acid (ABA) are increased in Pi-deficient plants, and the heightened susceptibility to B. cinerea observed under Pi deficiency can be reverted by blocking ABA biosynthesis. Furthermore, high level of leaf ABA induced by overexpression of NCED6 in Pi-sufficient plants also resulted in greater susceptibility to B. cinerea infection associated with increased spore adhesion and germination, and reduced callose deposition. Our findings reveal a link between the enhanced accumulation of ABA induced by Pi deficiency and an increased sensitivity to B. cinerea infection.
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Affiliation(s)
- Aime Jaskolowski
- Department of Plant Molecular Biology, University of Lausanne, 1015, Lausanne, Switzerland
| | - Yves Poirier
- Department of Plant Molecular Biology, University of Lausanne, 1015, Lausanne, Switzerland
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2
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Inoue K, Tsuchida N, Saijo Y. Modulation of plant immunity and biotic interactions under phosphate deficiency. JOURNAL OF PLANT RESEARCH 2024; 137:343-357. [PMID: 38693461 DOI: 10.1007/s10265-024-01546-z] [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: 02/19/2024] [Accepted: 04/17/2024] [Indexed: 05/03/2024]
Abstract
Phosphorus (P) is an essential macronutrient for plant life and growth. P is primarily acquired in the form of inorganic phosphate (Pi) from soil. To cope with Pi deficiency, plants have evolved an elaborate system to improve Pi acquisition and utilization through an array of developmental and physiological changes, termed Pi starvation response (PSR). Plants also assemble and manage mutualistic microbes to enhance Pi uptake, through integrating PSR and immunity signaling. A trade-off between plant growth and defense favors the notion that plants lower a cellular state of immunity to accommodate host-beneficial microbes for nutrition and growth at the cost of infection risk. However, the existing data indicate that plants selectively activate defense responses against pathogens, but do not or less against non-pathogens, even under nutrient deficiency. In this review, we highlight recent advances in the principles and mechanisms with which plants balance immunity and growth-related processes to optimize their adaptation to Pi deficiency.
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Affiliation(s)
- Kanako Inoue
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara, 630-0192, Japan
| | - Natsuki Tsuchida
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara, 630-0192, Japan
| | - Yusuke Saijo
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama 8916-5, Ikoma, Nara, 630-0192, Japan.
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3
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Wang D, Wei L, Ma J, Wan Y, Huang K, Sun Y, Wen H, Chen Z, Li Z, Yu D, Cui H, Wu J, Wu Y, Kim ST, Zhao J, Parker JE, Tsuda K, Jiang C, Wang Y. Bacillus cereus NJ01 induces SA- and ABA-mediated immunity against bacterial pathogens through the EDS1-WRKY18 module. Cell Rep 2024; 43:113985. [PMID: 38517890 DOI: 10.1016/j.celrep.2024.113985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/22/2024] [Accepted: 03/06/2024] [Indexed: 03/24/2024] Open
Abstract
Emerging evidence suggests a beneficial role of rhizobacteria in ameliorating plant disease resistance in an environment-friendly way. In this study, we characterize a rhizobacterium, Bacillus cereus NJ01, that enhances bacterial pathogen resistance in rice and Arabidopsis. Transcriptome analyses show that root inoculation of NJ01 induces the expression of salicylic acid (SA)- and abscisic acid (ABA)-related genes in Arabidopsis leaves. Genetic evidence showed that EDS1, PAD4, and WRKY18 are required for B. cereus NJ01-induced bacterial resistance. An EDS1-PAD4 complex interacts with WRKY18 and enhances its DNA binding activity. WRKY18 directly binds to the W box in the promoter region of the SA biosynthesis gene ICS1 and ABA biosynthesis genes NCED3 and NCED5 and contributes to the NJ01-induced bacterial resistance. Taken together, our findings indicate a role of the EDS1/PAD4-WRKY18 complex in rhizobacteria-induced disease resistance.
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Affiliation(s)
- Dacheng Wang
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Lirong Wei
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Jinbiao Ma
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingqiao Wan
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Keyi Huang
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Yiqiong Sun
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Huili Wen
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Key Laboratory for Information Agriculture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Zhipeng Chen
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Key Laboratory for Information Agriculture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Zijie Li
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Dongli Yu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Haitao Cui
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Jingni Wu
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Yufeng Wu
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Key Laboratory for Information Agriculture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Sun Tae Kim
- Department of Plant Bioscience, Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Jing Zhao
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Jane E Parker
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany
| | - Kenichi Tsuda
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Chunhao Jiang
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China.
| | - Yiming Wang
- Department of Plant Pathology, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China.
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Luo DL, Huang SY, Ma CY, Zhang XY, Sun K, Zhang W, Dai CC. Seed-borne bacterial synthetic community resists seed pathogenic fungi and promotes plant growth. J Appl Microbiol 2024; 135:lxae073. [PMID: 38520150 DOI: 10.1093/jambio/lxae073] [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: 10/09/2023] [Revised: 02/21/2024] [Accepted: 03/21/2024] [Indexed: 03/25/2024]
Abstract
AIMS In this study, the control effects of synthetic microbial communities composed of peanut seed bacteria against seed aflatoxin contamination caused by Aspergillus flavus and root rot by Fusarium oxysporum were evaluated. METHODS AND RESULTS Potentially conserved microbial synthetic communities (C), growth-promoting synthetic communities (S), and combined synthetic communities (CS) of peanut seeds were constructed after 16S rRNA Illumina sequencing, strain isolation, and measurement of plant growth promotion indicators. Three synthetic communities showed resistance to root rot and CS had the best effect after inoculating into peanut seedlings. This was achieved by increased defense enzyme activity and activated salicylic acid (SA)-related, systematically induced resistance in peanuts. In addition, CS also inhibited the reproduction of A. flavus on peanut seeds and the production of aflatoxin. These effects are related to bacterial degradation of toxins and destruction of mycelia. CONCLUSIONS Inoculation with a synthetic community composed of seed bacteria can help host peanuts resist the invasion of seeds by A. flavus and seedlings by F. oxysporum and promote the growth of peanut seedlings.
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Affiliation(s)
- De-Lin Luo
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Shi-Yi Huang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Chen-Yu Ma
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Xiang-Yu Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Kai Sun
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Wei Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
| | - Chuan-Chao Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology and Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China
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5
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Jang S, Choi SK, Zhang H, Zhang S, Ryu CM, Kloepper JW. History of a model plant growth-promoting rhizobacterium, Bacillus velezensis GB03: from isolation to commercialization. FRONTIERS IN PLANT SCIENCE 2023; 14:1279896. [PMID: 37885658 PMCID: PMC10598611 DOI: 10.3389/fpls.2023.1279896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023]
Abstract
Bacillus velezensis strain GB03 is a Gram-positive rhizosphere bacterium known for its ability to promote plant growth and immunity. This review provides a comprehensive overview of the research on GB03 from its initial discovery in Australian wheat fields in 1971 to its current applications. Recognized as a model plant growth-promoting rhizobacterium (PGPR), GB03 has exhibited outstanding performance in enhancing the growth and protection of many crop plants including cucumber, pepper, wheat, barley, soybean, and cotton. Notably, GB03 has been reported to elicit plant immune response, referred to as induced systemic resistance (ISR), against above-ground pathogens and insect pests. Moreover, a pivotal finding in GB03 was the first-ever identification of its bacterial volatile compounds, which are known to boost plant growth and activate ISR. Research conducted over the past five decades has clearly demonstrated the potential of GB03 as an eco-friendly substitute for conventional pesticides and fertilizers. Validating its safety, the U.S. Environmental Protection Agency endorsed GB03 for commercial use as Kodiak® in 1998. Subsequently, other compounds, such as BioYield™, were released as a biological control agent against soil-borne pathogens and as a biofertilizer, utilizing a durable spore formulation. More recently, GB03 has been utilized as a keystone modulator for engineering the rhizosphere microbiome and for eliciting microbe-induced plant volatiles. These extensive studies on GB03 underscore its significant role in sustainable agriculture, positioning it as a safe and environmentally-friendly solution for crop protection.
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Affiliation(s)
- Seonghan Jang
- Infectious Disease Research Center, Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea
| | - Soo-Keun Choi
- Infectious Disease Research Center, Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea
- Department of Biosystems and Bioengineering, KRIBB School of Biotechnology, Korea University of Science and Technology (UST), Yuseong-gu, Daejeon, Republic of Korea
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Shouan Zhang
- Tropical Research and Education Center, Department of Plant Pathology, University of Florida-IFAS, Homestead, FL, United States
| | - Choong-Min Ryu
- Infectious Disease Research Center, Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea
- Department of Biosystems and Bioengineering, KRIBB School of Biotechnology, Korea University of Science and Technology (UST), Yuseong-gu, Daejeon, Republic of Korea
| | - Joseph W. Kloepper
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, United States
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Hiruma K, Aoki S, Takino J, Higa T, Utami YD, Shiina A, Okamoto M, Nakamura M, Kawamura N, Ohmori Y, Sugita R, Tanoi K, Sato T, Oikawa H, Minami A, Iwasaki W, Saijo Y. A fungal sesquiterpene biosynthesis gene cluster critical for mutualist-pathogen transition in Colletotrichum tofieldiae. Nat Commun 2023; 14:5288. [PMID: 37673872 PMCID: PMC10482981 DOI: 10.1038/s41467-023-40867-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/11/2023] [Indexed: 09/08/2023] Open
Abstract
Plant-associated fungi show diverse lifestyles from pathogenic to mutualistic to the host; however, the principles and mechanisms through which they shift the lifestyles require elucidation. The root fungus Colletotrichum tofieldiae (Ct) promotes Arabidopsis thaliana growth under phosphate limiting conditions. Here we describe a Ct strain, designated Ct3, that severely inhibits plant growth. Ct3 pathogenesis occurs through activation of host abscisic acid pathways via a fungal secondary metabolism gene cluster related to the biosynthesis of sesquiterpene metabolites, including botrydial. Cluster activation during root infection suppresses host nutrient uptake-related genes and changes mineral contents, suggesting a role in manipulating host nutrition state. Conversely, disruption or environmental suppression of the cluster renders Ct3 beneficial for plant growth, in a manner dependent on host phosphate starvation response regulators. Our findings indicate that a fungal metabolism cluster provides a means by which infectious fungi modulate lifestyles along the parasitic-mutualistic continuum in fluctuating environments.
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Affiliation(s)
- Kei Hiruma
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
- Department of Science and Technology, Nara Institute of Science and Technology, Nara, 630-0192, Japan.
| | - Seishiro Aoki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-0882, Japan
| | - Junya Takino
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Takeshi Higa
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Yuniar Devi Utami
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Akito Shiina
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Masanori Okamoto
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine-cho, Utsunomiya, Tochigi, 321-8505, Japan
| | - Masami Nakamura
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Nanami Kawamura
- Department of Science and Technology, Nara Institute of Science and Technology, Nara, 630-0192, Japan
| | - Yoshihiro Ohmori
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ryohei Sugita
- Radioisotope Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan
| | - Keitaro Tanoi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Toyozo Sato
- Genetic Resources Center, National Agriculture and Food Research Organization, Ibaraki, 305-8602, Japan
| | - Hideaki Oikawa
- Innovation Center of Marine Biotechnology and Pharmaceuticals, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong, 529020, China
| | - Atsushi Minami
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Wataru Iwasaki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-0882, Japan
| | - Yusuke Saijo
- Department of Science and Technology, Nara Institute of Science and Technology, Nara, 630-0192, Japan
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7
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Oleńska E, Małek W, Wójcik M, Szopa S, Swiecicka I, Aleksandrowicz O, Włostowski T, Zawadzka W, Sillen WMA, Vangronsveld J, Cholakova I, Langill T, Thijs S. Bacteria associated with Zn-hyperaccumulators Arabidopsis halleri and Arabidopsis arenosa from Zn-Pb-Cd waste heaps in Poland as promising tools for bioremediation. Sci Rep 2023; 13:12606. [PMID: 37537323 PMCID: PMC10400580 DOI: 10.1038/s41598-023-39852-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023] Open
Abstract
To identify metal adapted bacteria equipped with traits positively influencing the growth of two hyperaccumulator plant species Arabidopsis arenosa and Arabidopsis halleri, we isolated bacteria inhabiting rhizosphere and vegetative tissues (roots, basal and stem leaves) of plants growing on two old Zn-Pb-Cd waste heaps in Bolesław and Bukowno (S. Poland), and characterized their potential plant growth promoting (PGP) traits as well as determined metal concentrations in rhizosphere and plant tissues. To determine taxonomic position of 144 bacterial isolates, 16S rDNA Sanger sequencing was used. A metabolic characterization of isolated strains was performed in vitro using PGP tests. A. arenosa and A. halleri accumulate high amounts of Zn in their tissues, especially in stem leaves. Among in total 22 identified bacterial taxa, the highest level of the taxonomical diversity (H' = 2.01) was revealed in A. halleri basal leaf endophytes originating from Bukowno waste heap area. The 96, 98, 99, and 98% of investigated strains showed tolerant to Cd, Zn, Pb and Cu, respectively. Generally, higher percentages of bacteria could synthesize auxins, siderophores, and acetoin as well as could solubilize phosphate. Nine of waste heap origin bacterial strains were tolerant to toxic metals, showed in vitro PGP traits and are potential candidates for bioremediation.
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Affiliation(s)
- Ewa Oleńska
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland.
| | - Wanda Małek
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
| | - Małgorzata Wójcik
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
| | - Sebastian Szopa
- SHIM-POL A.M. Borzymowski, 5 Lubomirski, 05-080, Izabelin, Poland
| | - Izabela Swiecicka
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
- Laboratory of Applied Microbiology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | | | - Tadeusz Włostowski
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | - Weronika Zawadzka
- Faculty of Biology, University of Bialystok, 1J Ciołkowski, 15-245, Bialystok, Poland
| | - Wouter M A Sillen
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka, 20-033, Lublin, Poland
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Iva Cholakova
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Tori Langill
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Sofie Thijs
- Faculty of Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
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8
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Naik H, Maiti S, Amaresan N. Microbial volatile compounds (MVCs): an eco-friendly tool to manage abiotic stress in plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:91746-91760. [PMID: 37531051 DOI: 10.1007/s11356-023-29010-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 07/23/2023] [Indexed: 08/03/2023]
Abstract
Microbial volatile compounds (MVCs) are produced during the metabolism of microorganisms, are widely distributed in nature, and have significant applications in various fields. To date, several MVCs have been identified. Microbial groups such as bacteria and fungi release many organic and inorganic volatile compounds. They are typically small odorous compounds with low molecular masses, low boiling points, and lipophilic moieties with high vapor pressures. The physicochemical properties of MVCs help them to diffuse more readily in nature and allow dispersal to a more profound distance than other microbial non-volatile metabolites. In natural environments, plants communicate with several microorganisms and respond differently to MVCs. Here, we review the following points: (1) MVCs produced by various microbes including bacteria, fungi, viruses, yeasts, and algae; (2) How MVCs are effective, simple, efficient, and can modulate plant growth and developmental processes; and (3) how MVCs improve photosynthesis and increase plant resistance to various abiotic stressors.
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Affiliation(s)
- Hetvi Naik
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli, Surat, Gujarat, 394 350, India
| | - Saborni Maiti
- School of Biological Sciences, University of Utah, Salt Lake City, UT, 84112, USA
| | - Natarajan Amaresan
- C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Maliba Campus, Bardoli, Surat, Gujarat, 394 350, India.
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9
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Zhang H. Plant latent defense response against compatibility. THE ISME JOURNAL 2023; 17:787-791. [PMID: 36991179 PMCID: PMC10203107 DOI: 10.1038/s41396-023-01399-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/31/2023]
Abstract
Managing the association with microbes is crucial for plants. Evidence is emerging for the plant latent defense response, which is conditionally elicited by certain microbial nonpathogenic factors and thereby guards against potential risks from beneficial or commensal microbes. Latent defense response is an exciting new research area with a number of key issues immediately awaiting exploration. A detailed understanding of latent defense response will underpin the applications of beneficial microbes.
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Affiliation(s)
- Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China.
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10
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Paries M, Gutjahr C. The good, the bad, and the phosphate: regulation of beneficial and detrimental plant-microbe interactions by the plant phosphate status. THE NEW PHYTOLOGIST 2023. [PMID: 37145847 DOI: 10.1111/nph.18933] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 03/21/2023] [Indexed: 05/06/2023]
Abstract
Phosphate (Pi ) is indispensable for life on this planet. However, for sessile land plants it is poorly accessible. Therefore, plants have developed a variety of strategies for enhanced acquisition and recycling of Pi . The mechanisms to cope with Pi limitation as well as direct uptake of Pi from the substrate via the root epidermis are regulated by a conserved Pi starvation response (PSR) system based on a family of key transcription factors (TFs) and their inhibitors. Furthermore, plants obtain Pi indirectly through symbiosis with mycorrhiza fungi, which employ their extensive hyphal network to drastically increase the soil volume that can be explored by plants for Pi . Besides mycorrhizal symbiosis, there is also a variety of other interactions with epiphytic, endophytic, and rhizospheric microbes that can indirectly or directly influence plant Pi uptake. It was recently discovered that the PSR pathway is involved in the regulation of genes that promote formation and maintenance of AM symbiosis. Furthermore, the PSR system influences plant immunity and can also be a target of microbial manipulation. It is known for decades that the nutritional status of plants influences the outcome of plant-microbe interactions. The first molecular explanations for these observations are now emerging.
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Affiliation(s)
- Michael Paries
- Plant Genetics, TUM School of Life Sciences, Technical University of Munich (TUM), Emil Ramann Str. 4, Freising, 85354, Germany
| | - Caroline Gutjahr
- Plant Genetics, TUM School of Life Sciences, Technical University of Munich (TUM), Emil Ramann Str. 4, Freising, 85354, Germany
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
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11
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Pazhamala LT, Giri J. Plant phosphate status influences root biotic interactions. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:2829-2844. [PMID: 36516418 DOI: 10.1093/jxb/erac491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 12/09/2022] [Indexed: 06/06/2023]
Abstract
Phosphorus (P) deficiency stress in combination with biotic stress(es) severely impacts crop yield. Plant responses to P deficiency overlapping with that of other stresses exhibit a high degree of complexity involving different signaling pathways. On the one hand, plants engage with rhizosphere microbiome/arbuscular mycorrhizal fungi for improved phosphate (Pi) acquisition and plant stress response upon Pi deficiency; on the other hand, this association is gets disturbed under Pi sufficiency. This nutrient-dependent response is highly regulated by the phosphate starvation response (PSR) mediated by the master regulator, PHR1, and its homolog, PHL. It is interesting to note that Pi status (deficiency/sufficiency) has a varying response (positive/negative) to different biotic encounters (beneficial microbes/opportunistic pathogens/insect herbivory) through a coupled PSR-PHR1 immune system. This also involves crosstalk among multiple players including transcription factors, defense hormones, miRNAs, and Pi transporters, among others influencing the plant-biotic-phosphate interactions. We provide a comprehensive view of these key players involved in maintaining a delicate balance between Pi homeostasis and plant immunity. Finally, we propose strategies to utilize this information to improve crop resilience to Pi deficiency in combination with biotic stresses.
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Affiliation(s)
- Lekha T Pazhamala
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India
| | - Jitender Giri
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India
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12
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Xu Z, Liu Y, Zhang N, Xun W, Feng H, Miao Y, Shao J, Shen Q, Zhang R. Chemical communication in plant-microbe beneficial interactions: a toolbox for precise management of beneficial microbes. Curr Opin Microbiol 2023; 72:102269. [PMID: 36682279 DOI: 10.1016/j.mib.2023.102269] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 12/14/2022] [Accepted: 01/05/2023] [Indexed: 01/22/2023]
Abstract
Harnessing the power of beneficial microbes in the rhizosphere to improve crop performance is a key goal of sustainable agriculture. However, the precise management of rhizosphere microbes for crop growth and health remains challenging because we lack a comprehensive understanding of the plant-rhizomicrobiome relationship. In this review, we discuss the latest research progress on root colonisation by representative beneficial microbes (e.g. Bacillus spp. and Pseudomonas spp.). We also highlight the bidirectional chemical communication between microbes and plant roots for precise functional control of beneficial microbes in the rhizosphere, as well as advances in understanding how beneficial microbes overcome the immune system of plants. Finally, we propose future research objectives that will help us better understand the complex network of plant-microbe interactions.
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Affiliation(s)
- Zhihui Xu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Yunpeng Liu
- 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
| | - Nan Zhang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Weibing Xun
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Haichao Feng
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Youzhi Miao
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Jiahui Shao
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Qirong Shen
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China
| | - Ruifu Zhang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Nanjing Agricultural University, Nanjing 210095, Jiangsu, PR China; 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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13
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Ling L, Pang M, Luo H, Cheng W, Jiang K, Wang Y. Antifungal activity of diacetyl, a volatile organic compound, on Trichoderma lixii F2 isolated from postharvest Lanzhou lily bulbs. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Morcillo RJL, Baroja-Fernández E, López-Serrano L, Leal-López J, Muñoz FJ, Bahaji A, Férez-Gómez A, Pozueta-Romero J. Cell-free microbial culture filtrates as candidate biostimulants to enhance plant growth and yield and activate soil- and plant-associated beneficial microbiota. FRONTIERS IN PLANT SCIENCE 2022; 13:1040515. [PMID: 36618653 PMCID: PMC9816334 DOI: 10.3389/fpls.2022.1040515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/05/2022] [Indexed: 06/12/2023]
Abstract
In this work we compiled information on current and emerging microbial-based fertilization practices, especially the use of cell-free microbial culture filtrates (CFs), to promote plant growth, yield and stress tolerance, and their effects on plant-associated beneficial microbiota. In addition, we identified limitations to bring microbial CFs to the market as biostimulants. In nature, plants act as metaorganisms, hosting microorganisms that communicate with the plants by exchanging semiochemicals through the phytosphere. Such symbiotic interactions are of high importance not only for plant yield and quality, but also for functioning of the soil microbiota. One environmentally sustainable practice to increasing crop productivity and/or protecting plants from (a)biotic stresses while reducing the excessive and inappropriate application of agrochemicals is based on the use of inoculants of beneficial microorganisms. However, this technology has a number of limitations, including inconsistencies in the field, specific growth requirements and host compatibility. Beneficial microorganisms release diffusible substances that promote plant growth and enhance yield and stress tolerance. Recently, evidence has been provided that this capacity also extends to phytopathogens. Consistently, soil application of microbial cell-free culture filtrates (CFs) has been found to promote growth and enhance the yield of horticultural crops. Recent studies have shown that the response of plants to soil application of microbial CFs is associated with strong proliferation of the resident beneficial soil microbiota. Therefore, the use of microbial CFs to enhance both crop yield and stress tolerance, and to activate beneficial soil microbiota could be a safe, efficient and environmentally friendly approach to minimize shortfalls related to the technology of microbial inoculation. In this review, we compile information on microbial CFs and the main constituents (especially volatile compounds) that promote plant growth, yield and stress tolerance, and their effects on plant-associated beneficial microbiota. In addition, we identify challenges and limitations for their use as biostimulants to bring them to the market and we propose remedial actions and give suggestions for future work.
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Affiliation(s)
- Rafael Jorge León Morcillo
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (IHSM), Consejo Superior de Investigaciones Científicas-Universidad de Málaga, Málaga, Spain
| | - Edurne Baroja-Fernández
- Instituto de Agrobiotecnología (IdAB), Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, Nafarroa, Spain
| | - Lidia López-Serrano
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (IHSM), Consejo Superior de Investigaciones Científicas-Universidad de Málaga, Málaga, Spain
| | - Jesús Leal-López
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (IHSM), Consejo Superior de Investigaciones Científicas-Universidad de Málaga, Málaga, Spain
| | - Francisco José Muñoz
- Instituto de Agrobiotecnología (IdAB), Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, Nafarroa, Spain
| | - Abdellatif Bahaji
- Instituto de Agrobiotecnología (IdAB), Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, Nafarroa, Spain
| | - Alberto Férez-Gómez
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (IHSM), Consejo Superior de Investigaciones Científicas-Universidad de Málaga, Málaga, Spain
| | - Javier Pozueta-Romero
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (IHSM), Consejo Superior de Investigaciones Científicas-Universidad de Málaga, Málaga, Spain
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15
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He D, Singh SK, Peng L, Kaushal R, Vílchez JI, Shao C, Wu X, Zheng S, Morcillo RJL, Paré PW, Zhang H. Flavonoid-attracted Aeromonas sp. from the Arabidopsis root microbiome enhances plant dehydration resistance. THE ISME JOURNAL 2022; 16:2622-2632. [PMID: 35842464 PMCID: PMC9561528 DOI: 10.1038/s41396-022-01288-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 11/14/2022]
Abstract
Flavonoids are stress-inducible metabolites important for plant-microbe interactions. In contrast to their well-known function in initiating rhizobia nodulation in legumes, little is known about whether and how flavonoids may contribute to plant stress resistance through affecting non-nodulating bacteria. Here we show that flavonoids broadly contribute to the diversity of the Arabidopsis root microbiome and preferentially attract Aeromonadaceae, which included a cultivable Aeromonas sp. H1 that displayed flavonoid-induced chemotaxis with transcriptional enhancement of flagellum biogenesis and suppression of fumarate reduction for smooth swims. Strain H1 showed multiple plant-beneficial traits and enhanced plant dehydration resistance, which required flavonoids but not through a sudden "cry-for-help" upon stress. Strain H1 boosted dehydration-induced H2O2 accumulation in guard cells and stomatal closure, concomitant with synergistic induction of jasmonic acid-related regulators of plant dehydration resistance. These findings revealed a key role of flavonoids, and the underlying mechanism, in mediating plant-microbiome interactions including the bacteria-enhanced plant dehydration resistance.
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Affiliation(s)
- Danxia He
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Sunil K Singh
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
| | - Li Peng
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
| | - Richa Kaushal
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- Department of Applied Sciences and Biotechnology, Shoolini University, Solan, India
| | - Juan I Vílchez
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- Instituto de Tecnologia Química e Biológica (ITQB), Oeiras, Lisbon, Portugal
| | - Chuyang Shao
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xiaoxuan Wu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Shuai Zheng
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Rafael J L Morcillo
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora" (IHSM-UMA-CSIC), Málaga, Spain
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China.
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16
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Chan C. Progress in Salicylic Acid-Dependent Signaling for Growth–Defense Trade-Off. Cells 2022; 11:cells11192985. [PMID: 36230947 PMCID: PMC9563428 DOI: 10.3390/cells11192985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/21/2022] Open
Abstract
One grand challenge for studying plant biotic and abiotic stress responses is to optimize plant growth and plasticity under variable environmental constraints, which in the long run benefits agricultural production. However, efforts in promoting plant immunity are often accompanied by compromised morphological “syndromes” such as growth retardation, sterility, and reduced yield. Such a trade-off is dictated by complex signaling driven by secondary messengers and phytohormones. Salicylic acid (SA) is a well-known phytohormone essential for basal immunity and systemic acquired resistance. Interestingly, recent updates suggest that external environmental cues, nutrient status, developmental stages, primary metabolism, and breeding strategies attribute an additional layer of control over SA-dependent signaling, and, hence, plant performance against pathogens. In this review, these external and internal factors are summarized, focusing on their specific roles on SA biosynthesis and downstream signaling leading to immunity. A few considerations and future opportunities are highlighted to improve plant fitness with minimal growth compensation.
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Affiliation(s)
- Ching Chan
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
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17
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Ji L, Yang X, Qi F. Distinct Responses to Pathogenic and Symbionic Microorganisms: The Role of Plant Immunity. Int J Mol Sci 2022; 23:ijms231810427. [PMID: 36142339 PMCID: PMC9499406 DOI: 10.3390/ijms231810427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 12/03/2022] Open
Abstract
Plants must balance both beneficial (symbiotic) and pathogenic challenges from microorganisms, the former benefitting the plant and agriculture and the latter causing disease and economic harm. Plant innate immunity describes a highly conserved set of defense mechanisms that play pivotal roles in sensing immunogenic signals associated with both symbiotic and pathogenic microbes and subsequent downstream activation of signaling effector networks that protect the plant. An intriguing question is how the innate immune system distinguishes “friends” from “foes”. Here, we summarize recent advances in our understanding of the role and spectrum of innate immunity in recognizing and responding to different microbes. In addition, we also review some of the strategies used by microbes to manipulate plant signaling pathways and thus evade immunity, with emphasis on the use of effector proteins and micro-RNAs (miRNAs). Furthermore, we discuss potential questions that need addressing to advance the field of plant–microbe interactions.
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18
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Yang Y, Chen S, Wu X, Peng L, Vílchez JI, Kaushal R, Liu X, Singh SK, He D, Yuan F, Lv S, Morcillo RJL, Wang W, Huang W, Lei M, Zhu JK, Paré PW, Zhang H. Plant latent defense response to microbial non-pathogenic factors antagonizes compatibility. Natl Sci Rev 2022; 9:nwac109. [PMID: 36072504 PMCID: PMC9440716 DOI: 10.1093/nsr/nwac109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/18/2022] Open
Abstract
Unlike microbe-associated molecular patterns (MAMPs) that are readily targeted by host immunity, microbial non-pathogenic factors (NPFs) appear negligible as they do not elicit defense. Little is known about whether and how NPFs may be monitored by hosts to control compatibility. Herein, a forward genetic screening isolated an Arabidopsis mutant with a loss of plant-rhizobacteria mutualism, leading to the disclosure of a plant latent defense response (LDR) to NPFs. The activation of LDR in the mutant, named rol1 for regulator of LDR 1, is triggered by several non-pathogenic volatile organic compounds and antagonizes plant compatibility with the beneficial bacterium Bacillus amyloliquefaciens GB03. The activation of LDR in rol1 is mediated through the prokaryotic pathway of chloroplastic lipid biosynthesis. The rol1 root microbiome showed a reduced proportion of the Bacillaceae family. We propose that, parallel to the forefront immunity to MAMPs, LDR to certain NPFs provides a hidden layer of defense for controlling compatibility with commensal or beneficial microbes.
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Affiliation(s)
- Yu Yang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Shenglan Chen
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxuan Wu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
| | - Li Peng
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Juan I Vílchez
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Richa Kaushal
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Xiaomin Liu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Sunil K Singh
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Danxia He
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
| | - Fengtong Yuan
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
| | - Suhui Lv
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Universityof Chinese Academy of Sciences, Beijing 100049, China
| | - Rafael J L Morcillo
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Wei Wang
- Shanghai Chenshan Botanical Garden, Shanghai 201602, China
| | - Weichang Huang
- Shanghai Chenshan Botanical Garden, Shanghai 201602, China
| | - Mingguang Lei
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
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19
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Lv S, Yang Y, Yu G, Peng L, Zheng S, Singh SK, Vílchez JI, Kaushal R, Zi H, Yi D, Wang Y, Luo S, Wu X, Zuo Z, Huang W, Liu R, Du J, Macho AP, Tang K, Zhang H. Dysfunction of histone demethylase IBM1 in Arabidopsis causes autoimmunity and reshapes the root microbiome. THE ISME JOURNAL 2022; 16:2513-2524. [PMID: 35908110 PMCID: PMC9561531 DOI: 10.1038/s41396-022-01297-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/09/2022] [Accepted: 07/13/2022] [Indexed: 11/25/2022]
Abstract
Root microbiota is important for plant growth and fitness. Little is known about whether and how the assembly of root microbiota may be controlled by epigenetic regulation, which is crucial for gene transcription and genome stability. Here we show that dysfunction of the histone demethylase IBM1 (INCREASE IN BONSAI METHYLATION 1) in Arabidopsis thaliana substantially reshaped the root microbiota, with the majority of the significant amplicon sequence variants (ASVs) being decreased. Transcriptome analyses of plants grown in soil and in sterile growth medium jointly disclosed salicylic acid (SA)-mediated autoimmunity and production of the defense metabolite camalexin in the ibm1 mutants. Analyses of genome-wide histone modifications and DNA methylation highlighted epigenetic modifications permissive for transcription at several important defense regulators. Consistently, ibm1 mutants showed increased resistance to the pathogen Pseudomonas syringae DC3000 with stronger immune responses. In addition, ibm1 showed substantially impaired plant growth promotion in response to beneficial bacteria; the impairment was partially mimicked by exogenous application of SA to wild-type plants, and by a null mutation of AGP19 that is important for cell expansion and that is repressed with DNA hypermethylation in ibm1. IBM1-dependent epigenetic regulation imposes strong and broad impacts on plant-microbe interactions and thereby shapes the assembly of root microbiota.
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20
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Singh SK, Sun Y, Yang Y, Zuo Z, Wu X, Shao C, Peng L, Paré PW, Zhang H. Bacterial diacetyl suppresses abiotic stress-induced senescence in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1135-1139. [PMID: 35377511 DOI: 10.1111/jipb.13260] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Premature plant senescence induced by abiotic stresses is a major cause of agricultural losses worldwide. Tools for suppressing stress-induced plant senescence are limited. Here, we report that diacetyl, a natural compound emitted by the plant-beneficial bacterium Bacillus amyloliquefaciens, suppresses abscisic acid -mediated foliar senescence in Arabidopsis thaliana under various abiotic stress conditions. Our results establish diacetyl as an effective protector against stress-induced plant senescence and reveal a molecular mechanism for bacteria-enhanced plant stress resistance.
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Affiliation(s)
- Sunil K Singh
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
| | - Yazhou Sun
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu Yang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
| | - Ziwei Zuo
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoxuan Wu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chuyang Shao
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Peng
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, 79409, Texas, USA
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China
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21
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Oleńska E, Małek W, Sujkowska-Rybkowska M, Szopa S, Włostowski T, Aleksandrowicz O, Swiecicka I, Wójcik M, Thijs S, Vangronsveld J. An Alliance of Trifolium repens—Rhizobium leguminosarum bv. trifolii—Mycorrhizal Fungi From an Old Zn-Pb-Cd Rich Waste Heap as a Promising Tripartite System for Phytostabilization of Metal Polluted Soils. Front Microbiol 2022; 13:853407. [PMID: 35495712 PMCID: PMC9051510 DOI: 10.3389/fmicb.2022.853407] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/15/2022] [Indexed: 11/21/2022] Open
Abstract
The Bolesław waste heap in South Poland, with total soil Zn concentrations higher than 50,000 mg kg–1, 5,000 mg Pb kg–1, and 500 mg Cd kg–1, is a unique habitat for metallicolous plants, such as Trifolium repens L. The purpose of this study was to characterize the association between T. repens and its microbial symbionts, i.e., Rhizobium leguminosarum bv. trifolii and mycorrhizal fungi and to evaluate its applicability for phytostabilization of metal-polluted soils. Rhizobia originating from the nutrient-poor waste heap area showed to be efficient in plant nodulation and nitrogen fixation. They demonstrated not only potential plant growth promotion traits in vitro, but they also improved the growth of T. repens plants to a similar extent as strains from a non-polluted reference area. Our results revealed that the adaptations of T. repens to high Zn-Pb-Cd concentrations are related to the storage of metals predominantly in the roots (excluder strategy) due to nodule apoplast modifications (i.e., thickening and suberization of cell walls, vacuolar storage), and symbiosis with arbuscular mycorrhizal fungi of a substantial genetic diversity. As a result, the rhizobia-mycorrhizal fungi-T. repens association appears to be a promising tool for phytostabilization of Zn-Pb-Cd-polluted soils.
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Affiliation(s)
- Ewa Oleńska
- Faculty of Biology, University of Bialystok, Bialystok, Poland
- *Correspondence: Ewa Oleńska,
| | - Wanda Małek
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Lublin, Poland
| | | | | | | | | | - Izabela Swiecicka
- Faculty of Biology, University of Bialystok, Bialystok, Poland
- Laboratory of Applied Microbiology, University of Bialystok, Bialystok, Poland
| | - Małgorzata Wójcik
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Lublin, Poland
| | - Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Faculty of Biology and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Lublin, Poland
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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22
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Tang J, Wu D, Li X, Wang L, Xu L, Zhang Y, Xu F, Liu H, Xie Q, Dai S, Coleman-Derr D, Zhu S, Yu F. Plant immunity suppression via PHR1-RALF-FERONIA shapes the root microbiome to alleviate phosphate starvation. EMBO J 2022; 41:e109102. [PMID: 35146778 PMCID: PMC8922250 DOI: 10.15252/embj.2021109102] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/07/2022] [Accepted: 01/17/2022] [Indexed: 11/09/2022] Open
Abstract
The microbiome plays an important role in shaping plant growth and immunity, but few plant genes and pathways impacting plant microbiome composition have been reported. In Arabidopsis thaliana, the phosphate starvation response (PSR) was recently found to modulate the root microbiome upon phosphate (Pi) starvation through the transcriptional regulator PHR1. Here, we report that A. thaliana PHR1 directly binds to the promoters of rapid alkalinization factor (RALF) genes, and activates their expression under phosphate-starvation conditions. RALFs in turn suppress complex formation of pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) receptor through FERONIA, a previously-identified PTI modulator that increases resistance to certain detrimental microorganisms. Suppression of immunity via the PHR1-RALF-FERONIA axis allows colonization by specialized root microbiota that help to alleviate phosphate starvation by upregulating the expression of PSR genes. These findings provide a new paradigm for coordination of host-microbe homeostasis through modulating plant innate immunity after environmental perturbations.
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Affiliation(s)
- Jing Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Dousheng Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Xiaoxu Li
- Technology Center, China Tobacco Hunan Industrial Co., Ltd., Changsha, China
| | - Lifeng Wang
- State Key Laboratory of Hybrid Rice, Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Ling Xu
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Yi Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Fan Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Hongbin Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Qijun Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Shaojun Dai
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Devin Coleman-Derr
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Sirui Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
| | - Feng Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, China
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Yu Y, Gui Y, Li Z, Jiang C, Guo J, Niu D. Induced Systemic Resistance for Improving Plant Immunity by Beneficial Microbes. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11030386. [PMID: 35161366 PMCID: PMC8839143 DOI: 10.3390/plants11030386] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 05/05/2023]
Abstract
Plant beneficial microorganisms improve the health and growth of the associated plants. Application of beneficial microbes triggers an enhanced resistance state, also termed as induced systemic resistance (ISR), in the host, against a broad range of pathogens. Upon the activation of ISR, plants employ long-distance systemic signaling to provide protection for distal tissue, inducing rapid and strong immune responses against pathogens invasions. The transmission of ISR signaling was commonly regarded to be a jasmonic acid- and ethylene-dependent, but salicylic acid-independent, transmission. However, in the last decade, the involvement of both salicylic acid and jasmonic acid/ethylene signaling pathways and the regulatory roles of small RNA in ISR has been updated. In this review, the plant early recognition, responsive reactions, and the related signaling transduction during the process of the plant-beneficial microbe interaction was discussed, with reflection on the crucial regulatory role of small RNAs in the beneficial microbe-mediated ISR.
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Affiliation(s)
- Yiyang Yu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Ying Gui
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Zijie Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Chunhao Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Jianhua Guo
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Dongdong Niu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (Y.G.); (Z.L.); (C.J.); (J.G.)
- State Key Laboratory of Biological Interactions and Crop Health, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
- Correspondence:
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24
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Singh SK, Wu X, Shao C, Zhang H. Microbial enhancement of plant nutrient acquisition. STRESS BIOLOGY 2022; 2:3. [PMID: 37676341 PMCID: PMC10441942 DOI: 10.1007/s44154-021-00027-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/10/2021] [Indexed: 09/08/2023]
Abstract
Nutrient availability is a determining factor for crop yield and quality. While fertilization is a major approach for improving plant nutrition, its efficacy can be limited and the production and application of fertilizers frequently bring problems to the environment. A large number of soil microbes are capable of enhancing plant nutrient acquisition and thereby offer environmentally benign solutions to meet the requirements of plant nutrition. Herein we provide summations of how beneficial microbes enhance plant acquisition of macronutrients and micronutrients. We also review recent studies on nutrition-dependent plant-microbe interactions, which highlight the plant's initiative in establishing or deterring the plant-microbe association. By dissecting complex signaling interactions between microbes within the root microbiome, a greater understanding of microbe-enhanced plant nutrition under specific biotic and abiotic stresses will be possible.
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Affiliation(s)
- Sunil K Singh
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
| | - Xiaoxuan Wu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chuyang Shao
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602, China.
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25
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Li Z, Hu J, Wu Y, Wang J, Song H, Chai M, Cong L, Miao F, Ma L, Tang W, Yang C, Tao Q, Zhong S, Zhao Y, Liu H, Yang G, Wang Z, Sun J. Integrative analysis of the metabolome and transcriptome reveal the phosphate deficiency response pathways of alfalfa. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 170:49-63. [PMID: 34847401 DOI: 10.1016/j.plaphy.2021.11.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Understanding the mechanisms underlying the responses to inorganic phosphate (Pi) deficiency in alfalfa will help enhance Pi acquisition efficiency and the sustainable use of phosphorous resources. Integrated global metabolomic and transcriptomic analyses of mid-vegetative alfalfa seedlings under 12-day Pi deficiency were conducted. Limited seedling growth were found, including 13.24%, 16.85% and 33.36% decreases in height, root length and photosynthesis, and a 24.10% increase in root-to-shoot ratio on day 12. A total of 322 and 448 differentially abundant metabolites and 1199 and 1061 differentially expressed genes were identified in roots and shoots. Increased (>3.68-fold) inorganic phosphate transporter 1;4 and SPX proteins levels in the roots (>2.15-fold) and shoots (>2.50-fold) were related to Pi absorption and translocation. The levels of phospholipids and Pi-binding carbohydrates and nucleosides were decreased, while those of phosphatases and pyrophosphatases in whole seedlings were induced under reduced Pi. In addition, nitrogen assimilation was affected by inhibiting high-affinity nitrate transporters (NRT2.1 and NRT3.1), and nitrate reductase. Increased delphinidin-3-glucoside might contribute to the gray-green leaves induced by Pi limitation. Stress-induced MYB, WRKY and ERF transcription factors were identified. The responses of alfalfa to Pi deficiency were summarized as local systemic signaling pathways, including root growth, stress-related responses consisting of enzymatic and nonenzymatic systems, and hormone signaling and systemic signaling pathways including Pi recycling and Pi sensing in the whole plant, as well as Pi recovery, and nitrate and metal absorption in the roots. This study provides important information on the molecular mechanism of the response to Pi deficiency in alfalfa.
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Affiliation(s)
- Zhenyi Li
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Jingyun Hu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Yao Wu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Jixiang Wang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Hui Song
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Maofeng Chai
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Lili Cong
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Fuhong Miao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Lichao Ma
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Wei Tang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Chao Yang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Qibo Tao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Shangzhi Zhong
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Yiran Zhao
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Hongqing Liu
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Guofeng Yang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Zengyu Wang
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Juan Sun
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China.
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26
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Wilson AC, Morgan WR. Functional analysis of a Phytophthora host-translocated effector using the yeast model system. PeerJ 2021; 9:e12576. [PMID: 34966585 PMCID: PMC8663620 DOI: 10.7717/peerj.12576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/09/2021] [Indexed: 11/20/2022] Open
Abstract
Background Phytophthora plant pathogens secrete effector proteins that are translocated into host plant cells during infection and collectively contribute to pathogenicity. A subset of these host-translocated effectors can be identified by the amino acid motif RXLR (arginine, any amino acid, leucine, arginine). Bioinformatics analysis has identified hundreds of putative RXLR effector genes in Phytophthora genomes, but the specific molecular function of most remains unknown. Methods Here we describe initial studies to investigate the use of Saccharomyces cerevisiae as a eukaryotic model to explore the function of Phytophthora RXLR effector proteins. Results and Conclusions Expression of individual RXLR effectors in yeast inhibited growth, consistent with perturbation of a highly conserved cellular process. Transcriptome analysis of yeast cells expressing the poorly characterized P. sojae RXLR effector Avh110 identified nearly a dozen yeast genes whose expression levels were altered greater than two-fold compared to control cells. All five of the most down-regulated yeast genes are normally induced under low phosphate conditions via the PHO4 transcription factor, indicating that PsAvh110 perturbs the yeast regulatory network essential for phosphate homeostasis and suggesting likely PsAvh110 targets during P. sojae infection of its soybean host.
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Affiliation(s)
- Avery C Wilson
- Department of Biology, The College of Wooster, Wooster, OH, United States.,School of Medicine, New York Medical College, Valhalla, NY, United States
| | - William R Morgan
- Department of Biology, The College of Wooster, Wooster, OH, United States
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27
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Jiang L, Lee MH, Kim CY, Kim SW, Kim PI, Min SR, Lee J. Plant Growth Promotion by Two Volatile Organic Compounds Emitted From the Fungus Cladosporium halotolerans NGPF1. FRONTIERS IN PLANT SCIENCE 2021; 12:794349. [PMID: 34925431 PMCID: PMC8678569 DOI: 10.3389/fpls.2021.794349] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/09/2021] [Indexed: 06/14/2023]
Abstract
Microbial volatiles have beneficial roles in the agricultural ecological system, enhancing plant growth and inducing systemic resistance against plant pathogens without being hazardous to the environment. The interactions of plant and fungal volatiles have been extensively studied, but there is limited research specifically elucidating the effects of distinct volatile organic compounds (VOCs) on plant growth promotion. The current study was conducted to investigate the impact of VOCs from Cladosporium halotolerans NGPF1 on plant growth, and to elucidate the mechanisms for the plant growth-promoting (PGP) activity of these VOCs. The VOCs from C. halotolerans NGPF1 significantly promoted plant growth compared with the control, and this PGP activity of the VOCs was culture medium-dependent. Headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS) identified two VOC structures with profiles that differed depending on the culture medium. The two compounds that were only produced in potato dextrose (PD) medium were identified as 2-methyl-butanal and 3-methyl-butanal, and both modulated plant growth promotion and root system development. The PGP effects of the identified synthetic compounds were analyzed individually and in blends using N. benthamiana plants. A blend of the two VOCs enhanced growth promotion and root system development compared with the individual compounds. Furthermore, real-time PCR revealed markedly increased expression of genes involved in auxin, expansin, and gibberellin biosynthesis and metabolism in plant leaves exposed to the two volatile blends, while cytokinin and ethylene expression levels were decreased or similar in comparison with the control. These findings demonstrate that naturally occurring fungal VOCs can induce plant growth promotion and provide new insights into the mechanism of PGP activity. The application of stimulatory volatiles for growth enhancement could be used in the agricultural industry to increase crop yield.
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Affiliation(s)
- Lingmin Jiang
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, South Korea
| | - Myoung Hui Lee
- Wheat Research team, National Institute of Crop Science, Rural Development Administration, Wanju, South Korea
| | - Cha Young Kim
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, South Korea
| | - Suk Weon Kim
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, South Korea
| | - Pyoung Il Kim
- Center for Industrialization of Agricultural and Livestock Microorganisms (CIALM), Jeongeup, South Korea
| | - Sung Ran Min
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Jiyoung Lee
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, South Korea
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28
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Friman J, Karssemeijer PN, Haller J, de Kreek K, van Loon JJ, Dicke M. Shoot and root insect herbivory change the plant rhizosphere microbiome and affects cabbage-insect interactions through plant-soil feedback. THE NEW PHYTOLOGIST 2021; 232:2475-2490. [PMID: 34537968 PMCID: PMC9291931 DOI: 10.1111/nph.17746] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 09/09/2021] [Indexed: 05/06/2023]
Abstract
Plant-soil feedback (PSF) may influence plant-insect interactions. Although plant defense differs between shoot and root tissues, few studies have examined root-feeding insect herbivores in a PSF context. We examined here how plant growth and resistance against root-feeding Delia radicum larvae was influenced by PSF. We conditioned soil with cabbage plants that were infested with herbivores that affect D. radicum through plant-mediated effects: leaf-feeding Plutella xylostella caterpillars and Brevicoryne brassicae aphids, root-feeding D. radicum larvae, and/or added rhizobacterium Pseudomonas simiae WCS417r. We analyzed the rhizosphere microbial community, and in a second set of conspecific plants exposed to conditioned soil, we assessed growth, expression of defense-related genes, and D. radicum performance. The rhizosphere microbiome differed mainly between shoot and root herbivory treatments. Addition of Pseudomonas simiae did not influence rhizosphere microbiome composition. Plant shoot biomass, gene expression, and plant resistance against D. radicum larvae was affected by PSF in a treatment-specific manner. Soil conditioning overall reduced plant shoot biomass, Pseudomonas simiae-amended soil causing the largest growth reduction. In conclusion, shoot and root insect herbivores alter the rhizosphere microbiome differently, with consequences for growth and resistance of plants subsequently exposed to conditioned soil.
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Affiliation(s)
- Julia Friman
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
| | - Peter N. Karssemeijer
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
| | - Julian Haller
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
| | - Kris de Kreek
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
| | - Joop J.A. van Loon
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
| | - Marcel Dicke
- Laboratory of EntomologyWageningen University and ResearchDroevendaalsesteeg 1Wageningen6708 PBthe Netherlands
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29
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Chan C, Liao YY, Chiou TJ. The Impact of Phosphorus on Plant Immunity. PLANT & CELL PHYSIOLOGY 2021; 62:582-589. [PMID: 33399863 DOI: 10.1093/pcp/pcaa168] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/05/2020] [Indexed: 05/26/2023]
Abstract
Phosphorus (P) is the second most essential macronutrient in terms of limiting plant growth. The genes involved in P acquisition, transport, storage, utilization and respective regulation have been extensively studied. In addition, significant attention has been given to the crosstalk between P and other environmental stresses. In this review, we summarize recent discoveries pertaining to the emerging function of P in plant immunity. The roles of external soil P availability, internal cellular P in plants, P starvation signaling machinery and phosphate transporters in biotic interactions are discussed. We also highlight the impact of several phytohormones on the signaling convergence between cellular P and immune responses. This information may serve as a foundation for dissecting the molecular interaction between nutrient responses and plant immunity.
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Affiliation(s)
- Ching Chan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
| | - Ya-Yun Liao
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
| | - Tzyy-Jen Chiou
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
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30
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Isidra-Arellano MC, Delaux PM, Valdés-López O. The Phosphate Starvation Response System: Its Role in the Regulation of Plant-Microbe Interactions. PLANT & CELL PHYSIOLOGY 2021; 62:392-400. [PMID: 33515263 DOI: 10.1093/pcp/pcab016] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
Phosphate (Pi) deficiency is a major factor limiting plant productivity worldwide. Land plants have evolved different strategies to cope with Pi deficiency. For instance, plants activate the so-called Pi starvation response (PSR) system, which is regulated by the transcription factor Phosphate Starvation Response1 (PHR1), to adjust plant growth and metabolic activity accordingly. Additionally, land plants can also establish mutualistic associations with soil microbes able to solubilize Pi from plant-inaccessible soil complexes and to transfer it to the host plant. A growing body of evidence indicates that PHR1 and the PSR system not only regulate the plant responses to Pi deficiency in an abiotic context, but they are also crucial for plants to properly interact with beneficial soil microbes able to provide them with soluble Pi. Recent evidence indicates that PHR1 and the PSR system contribute to shaping the plant-associated microbiota through the modulation of the plant immune system. The PSR and immune system outputs are tightly integrated by PHR1. Here, we review how plant host Pi status influences the establishment of the mutualistic association with soil microbes. We also highlight the role of PHR1 and the PSR system in shaping both the root microbiome and plant responses to Pi deficiency.
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Affiliation(s)
- Mariel C Isidra-Arellano
- Laboratorio de Gen�mica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Aut�noma de M�xico, Tlalnepantla, Estado de M�xico, 54090, M�xico
- Posgrado en Ciencias Biol�gicas, Universidad Nacional Aut�noma de M�xico, Coyoacan, M�xico City, 04510, M�xico
| | - Pierre-Marc Delaux
- Laboratoire de Recherche en Sciences V�g�tales (LRSV), Universit� de Toulouse, CNRS, UPS Castanet Tolosan, France
| | - Oswaldo Valdés-López
- Laboratorio de Gen�mica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Aut�noma de M�xico, Tlalnepantla, Estado de M�xico, 54090, M�xico
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31
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Plant Transcriptome Reprograming and Bacterial Extracellular Metabolites Underlying Tomato Drought Resistance Triggered by a Beneficial Soil Bacteria. Metabolites 2021; 11:metabo11060369. [PMID: 34207663 PMCID: PMC8230097 DOI: 10.3390/metabo11060369] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/27/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022] Open
Abstract
Water deficit is one of the major constraints to crop production and food security worldwide. Some plant growth-promoting rhizobacteria (PGPR) strains are capable of increasing plant drought resistance. Knowledge about the mechanisms underlying bacteria-induced plant drought resistance is important for PGPR applications in agriculture. In this study, we show the drought stress-mitigating effects on tomato plants by the Bacillus megaterium strain TG1-E1, followed by the profiling of plant transcriptomic responses to TG1-E1 and the profiling of bacterial extracellular metabolites. Comparison between the transcriptomes of drought-stressed plants with and without TG1-E1 inoculation revealed bacteria-induced transcriptome reprograming, with highlights on differentially expressed genes belonging to the functional categories including transcription factors, signal transduction, and cell wall biogenesis and organization. Mass spectrometry-based analysis identified over 40 bacterial extracellular metabolites, including several important regulators or osmoprotectant precursors for increasing plant drought resistance. These results demonstrate the importance of plant transcriptional regulation and bacterial metabolites in PGPR-induced plant drought resistance.
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32
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Boulton C. Provocation: all yeast cells are born equal, but some grow to be more equal than others. JOURNAL OF THE INSTITUTE OF BREWING 2021. [DOI: 10.1002/jib.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Kaushal R, Peng L, Singh SK, Zhang M, Zhang X, Vílchez JI, Wang Z, He D, Yang Y, Lv S, Xu Z, Morcillo RJL, Wang W, Huang W, Paré PW, Song CP, Zhu JK, Liu R, Zhong W, Ma P, Zhang H. Dicer-like proteins influence Arabidopsis root microbiota independent of RNA-directed DNA methylation. MICROBIOME 2021; 9:57. [PMID: 33637135 PMCID: PMC7913254 DOI: 10.1186/s40168-020-00966-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/06/2020] [Indexed: 05/20/2023]
Abstract
BACKGROUND Plants are naturally associated with root microbiota, which are microbial communities influential to host fitness. Thus, it is important to understand how plants control root microbiota. Epigenetic factors regulate the readouts of genetic information and consequently many essential biological processes. However, it has been elusive whether RNA-directed DNA methylation (RdDM) affects root microbiota assembly. RESULTS By applying 16S rRNA gene sequencing, we investigated root microbiota of Arabidopsis mutants defective in the canonical RdDM pathway, including dcl234 that harbors triple mutation in the Dicer-like proteins DCL3, DCL2, and DCL4, which produce small RNAs for RdDM. Alpha diversity analysis showed reductions in microbe richness from the soil to roots, reflecting the selectivity of plants on root-associated bacteria. The dcl234 triple mutation significantly decreases the levels of Aeromonadaceae and Pseudomonadaceae, while it increases the abundance of many other bacteria families in the root microbiota. However, mutants of the other examined key players in the canonical RdDM pathway showed similar microbiota as Col-0, indicating that the DCL proteins affect root microbiota in an RdDM-independent manner. Subsequently gene analysis by shotgun sequencing of root microbiome indicated a selective pressure on microbial resistance to plant defense in the dcl234 mutant. Consistent with the altered plant-microbe interactions, dcl234 displayed altered characters, including the mRNA and sRNA transcriptomes that jointly highlighted altered cell wall organization and up-regulated defense, the decreased cellulose and callose deposition in root xylem, and the restructured profile of root exudates that supported the alterations in gene expression and cell wall modifications. CONCLUSION Our findings demonstrate an important role of the DCL proteins in influencing root microbiota through integrated regulation of plant defense, cell wall compositions, and root exudates. Our results also demonstrate that the canonical RdDM is dispensable for Arabidopsis root microbiota. These findings not only establish a connection between root microbiota and plant epigenetic factors but also highlight the complexity of plant regulation of root microbiota. Video abstract.
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Affiliation(s)
- Richa Kaushal
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Li Peng
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Sunil K. Singh
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Mengrui Zhang
- Department of Statistics, University of Georgia, Athens, GA 30602 USA
| | - Xinlian Zhang
- Department of Statistics, University of Georgia, Athens, GA 30602 USA
| | - Juan I. Vílchez
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Zhen Wang
- Department of Statistics, University of Georgia, Athens, GA 30602 USA
| | - Danxia He
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Yu Yang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Suhui Lv
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Zhongtian Xu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- Current address: Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Rafael J. L. Morcillo
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- Current address: Institute for Water Research and Department of Microbiology, University of Granada, Granada, Spain
| | - Wei Wang
- Shanghai Chenshan Botanical Garden, Shanghai, 201602 China
| | - Weichang Huang
- Shanghai Chenshan Botanical Garden, Shanghai, 201602 China
| | - Paul W. Paré
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX 79409 USA
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, 475004 China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- Department of Horticulture & Landscape Architecture, Purdue University, West Lafayette, IN 47906 USA
| | - Renyi Liu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- Current address: Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Wenxuan Zhong
- Department of Statistics, University of Georgia, Athens, GA 30602 USA
| | - Ping Ma
- Department of Statistics, University of Georgia, Athens, GA 30602 USA
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, 475004 China
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Fincheira P, Quiroz A, Tortella G, Diez MC, Rubilar O. Current advances in plant-microbe communication via volatile organic compounds as an innovative strategy to improve plant growth. Microbiol Res 2021; 247:126726. [PMID: 33640574 DOI: 10.1016/j.micres.2021.126726] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/25/2021] [Accepted: 02/10/2021] [Indexed: 12/18/2022]
Abstract
Volatile organic compounds (VOCs) emitted by microorganisms have demonstrated an important role to improve growth and tolerance against abiotic stress on plants. Most studies have used Arabidopsis thaliana as a model plant, extending to other plants of commercial interest in the last years. Interestingly, the microbial VOCs are characterized by its biodegradable structure, quick action, absence of toxic substances, and acts at lower concentration to regulate plant physiological changes. These compounds modulate plant physiological processes such as phytohormone pathways, photosynthesis, nutrient acquisition, and metabolisms. Besides, the regulation of gene expression associated with cell components, biological processes, and molecular function are triggered by microbial VOCs. Otherwise, few studies have reported the important role of VOCs for confer plant tolerance to abiotic stress, such as drought and salinity. Although VOCs have shown an efficient action to enhance the plant growth under controlled conditions, there are still great challenges for their greenhouse or field application. Therefore, in this review, we summarize the current knowledge about the technical procedures, study cases, and physiological mechanisms triggered by microbial VOCs to finally discuss the challenges of its application in agriculture.
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Affiliation(s)
- Paola Fincheira
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile.
| | - Andrés Quiroz
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile; Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco, Chile
| | - Gonzalo Tortella
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile; Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco, Chile
| | - María Cristina Diez
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile; Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco, Chile
| | - Olga Rubilar
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco, Chile; Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco, Chile
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35
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Soto MJ, López-Lara IM, Geiger O, Romero-Puertas MC, van Dillewijn P. Rhizobial Volatiles: Potential New Players in the Complex Interkingdom Signaling With Legumes. FRONTIERS IN PLANT SCIENCE 2021; 12:698912. [PMID: 34239533 PMCID: PMC8258405 DOI: 10.3389/fpls.2021.698912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/27/2021] [Indexed: 05/04/2023]
Abstract
Bacteria release a wide range of volatile compounds that play important roles in intermicrobial and interkingdom communication. Volatile metabolites emitted by rhizobacteria can promote plant growth and increase plant resistance to both biotic and abiotic stresses. Rhizobia establish beneficial nitrogen-fixing symbiosis with legume plants in a process starting with a chemical dialog in the rhizosphere involving various diffusible compounds. Despite being one of the most studied plant-interacting microorganisms, very little is known about volatile compounds produced by rhizobia and their biological/ecological role. Evidence indicates that plants can perceive and respond to volatiles emitted by rhizobia. In this perspective, we present recent data that open the possibility that rhizobial volatile compounds have a role in symbiotic interactions with legumes and discuss future directions that could shed light onto this area of investigation.
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Affiliation(s)
- María J. Soto
- Estación Experimental del Zaidín, CSIC, Granada, Spain
- *Correspondence: María J. Soto,
| | - Isabel M. López-Lara
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Otto Geiger
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
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36
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Oleńska E, Małek W, Wójcik M, Swiecicka I, Thijs S, Vangronsveld J. Beneficial features of plant growth-promoting rhizobacteria for improving plant growth and health in challenging conditions: A methodical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140682. [PMID: 32758827 DOI: 10.1016/j.scitotenv.2020.140682] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/31/2020] [Accepted: 06/30/2020] [Indexed: 05/08/2023]
Abstract
New eco-friendly approaches are required to improve plant biomass production. Beneficial plant growth-promoting (PGP) bacteria may be exploited as excellent and efficient biotechnological tools to improve plant growth in various - including stressful - environments. We present an overview of bacterial mechanisms which contribute to plant health, growth, and development. Plant growth promoting rhizobacteria (PGPR) can interact with plants directly by increasing the availability of essential nutrients (e.g. nitrogen, phosphorus, iron), production and regulation of compounds involved in plant growth (e.g. phytohormones), and stress hormonal status (e.g. ethylene levels by ACC-deaminase). They can also indirectly affect plants by protecting them against diseases via competition with pathogens for highly limited nutrients, biocontrol of pathogens through production of aseptic-activity compounds, synthesis of fungal cell wall lysing enzymes, and induction of systemic responses in host plants. The potential of PGPR to facilitate plant growth is of fundamental importance, especially in case of abiotic stress, where bacteria can support plant fitness, stress tolerance, and/or even assist in remediation of pollutants. Providing additional evidence and better understanding of bacterial traits underlying plant growth-promotion can inspire and stir up the development of innovative solutions exploiting PGPR in times of highly variable environmental and climatological conditions.
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Affiliation(s)
- Ewa Oleńska
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland.
| | - Wanda Małek
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Małgorzata Wójcik
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Izabela Swiecicka
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland.
| | - Sofie Thijs
- Faculty of Sciences, Centre for Environmental Sciences, Hasselt University, Agoralaan D, B-3590, Belgium.
| | - Jaco Vangronsveld
- Faculty of Sciences, Centre for Environmental Sciences, Hasselt University, Agoralaan D, B-3590, Belgium.
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37
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Xiong C, He JZ, Singh BK, Zhu YG, Wang JT, Li PP, Zhang QB, Han LL, Shen JP, Ge AH, Wu CF, Zhang LM. Rare taxa maintain the stability of crop mycobiomes and ecosystem functions. Environ Microbiol 2020; 23:1907-1924. [PMID: 32996254 DOI: 10.1111/1462-2920.15262] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/27/2020] [Indexed: 12/24/2022]
Abstract
Plants harbour highly diverse mycobiomes which sustain essential functions for host health and productivity. However, ecological processes that govern the plant-mycobiome assembly, interactions and their impact on ecosystem functions remain poorly known. Here we characterized the ecological role and community assembly of both abundant and rare fungal taxa along the soil-plant continuums (rhizosphere, phyllosphere and endosphere) in the maize-wheat/barley rotation system under different fertilization practices at two contrasting sites. Our results indicate that mycobiome assembly is shaped predominantly by compartment niche and host species rather than by environmental factors. Moreover, crop-associated fungal communities are dominated by few abundant taxa mainly belonging to Sordariomycetes and Dothideomycetes, while the majority of diversity within mycobiomes are represented by rare taxa. For plant compartments, the abundant sub-community is mainly determined by stochastic processes. In contrast, the rare sub-community is more sensitive to host selection and mainly governed by deterministic processes. Furthermore, our results demonstrate that rare taxa play an important role in fungal co-occurrence network and ecosystem functioning like crop yield and soil enzyme activities. These results significantly advance our understanding of crop mycobiome assembly and highlight the key role of rare taxa in sustaining the stability of crop mycobiomes and ecosystem functions.
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Affiliation(s)
- Chao Xiong
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ji-Zheng He
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Brajesh K Singh
- Global Centre for Land-Based Innovation, Western Sydney University, Penrith, NSW, 2751, Australia.,Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia
| | - Yong-Guan Zhu
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Jun-Tao Wang
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Pei-Pei Li
- College of Resource and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Qin-Bing Zhang
- Soil and Fertilizer Station of Qilin District, Qujing, Yunnan, 655000, China
| | - Li-Li Han
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ju-Pei Shen
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - An-Hui Ge
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chuan-Fa Wu
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,College of Resource and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Li-Mei Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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38
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Isidra-Arellano MC, Pozas-Rodríguez EA, Del Rocío Reyero-Saavedra M, Arroyo-Canales J, Ferrer-Orgaz S, Del Socorro Sánchez-Correa M, Cardenas L, Covarrubias AA, Valdés-López O. Inhibition of legume nodulation by Pi deficiency is dependent on the autoregulation of nodulation (AON) pathway. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:1125-1139. [PMID: 32344464 DOI: 10.1111/tpj.14789] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/15/2020] [Accepted: 04/21/2020] [Indexed: 05/26/2023]
Abstract
Inhibition of nodule development is one of the main adverse effects of phosphate (Pi) deficiency in legumes. Despite all of the efforts made over the last decades to understand how root nodules cope with Pi deficiency, the molecular mechanisms leading to the reduction in nodule number under Pi deficiency remain elusive. In the present study, we provide experimental evidence indicating that Pi deficiency activates the autoregulation of nodulation (AON) pathway, leading to a reduction in nodule numbers in both common bean and soybean. A transcriptional profile analysis revealed that the expression of the AON-related genes PvNIN, PvRIC1, PvRIC2, and PvTML is upregulated under Pi deficiency conditions. The downregulation of the MYB transcription factor PvPHR1 in common bean roots significantly reduced the expression of these four AON-related genes. Physiological analyses indicated that Pi deficiency does not affect the establishment of the root nodule symbiosis in the supernodulation mutant lines Pvnark and Gmnark. Reciprocal grafting and split-roots analyses determined that the activation of the AON pathway was required for the inhibitory effect of Pi deficiency. Altogether, these data improve our understanding of the genetic mechanisms controlling the establishment of the root nodule symbiosis under Pi deficiency.
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Affiliation(s)
- Mariel C Isidra-Arellano
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
- Posgrado en Ciencias Biológicas, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico City, 04510, Mexico
| | - Eithan A Pozas-Rodríguez
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
| | - María Del Rocío Reyero-Saavedra
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
| | - Jazmin Arroyo-Canales
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
| | - Susana Ferrer-Orgaz
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
| | - María Del Socorro Sánchez-Correa
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
| | - Luis Cardenas
- Departamento de Biologia Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autonoma de Mexico, Cuernavaca, Morelos, 62210, Mexico
| | - Alejandra A Covarrubias
- Departamento de Biologia Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autonoma de Mexico, Cuernavaca, Morelos, 62210, Mexico
| | - Oswaldo Valdés-López
- Laboratorio de Genómica Funcional de Leguminosas, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Tlalnepantla, 54090, México
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39
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Vílchez JI, Yang Y, He D, Zi H, Peng L, Lv S, Kaushal R, Wang W, Huang W, Liu R, Lang Z, Miki D, Tang K, Paré PW, Song CP, Zhu JK, Zhang H. DNA demethylases are required for myo-inositol-mediated mutualism between plants and beneficial rhizobacteria. NATURE PLANTS 2020; 6:983-995. [PMID: 32661278 DOI: 10.1038/s41477-020-0707-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Root-associated soil bacteria can strongly influence plant fitness. DNA methylation is an epigenetic mark important to many fundamental biological processes; however, its roles in plant interactions with beneficial microbes remain elusive. Here, we report that active DNA demethylation in Arabidopsis controls root secretion of myo-inositol and consequently plant growth promotion triggered by Bacillus megaterium strain YC4. Root-secreted myo-inositol is critical for YC4 colonization and preferentially attracts B. megaterium among the examined bacteria species. Active DNA demethylation antagonizes RNA-directed DNA methylation in controlling myo-inositol homeostasis. Importantly, we demonstrate that active DNA demethylation controls myo-inositol-mediated mutualism between YC4 and Solanum lycopersicum, thus suggesting a conserved nature of this epigenetic regulatory mechanism.
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Affiliation(s)
- Juan I Vílchez
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Yu Yang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Danxia He
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hailing Zi
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Li Peng
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Suhui Lv
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Richa Kaushal
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Wei Wang
- Shanghai Chenshan Botanical Garden, Shanghai, China
| | | | - Renyi Liu
- Center for Agroforestry Mega Data Science, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zhaobo Lang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Daisuke Miki
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
| | - Kai Tang
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, USA
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, USA
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Shanghai, China.
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China.
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40
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Fitzpatrick CR, Salas-González I, Conway JM, Finkel OM, Gilbert S, Russ D, Teixeira PJPL, Dangl JL. The Plant Microbiome: From Ecology to Reductionism and Beyond. Annu Rev Microbiol 2020; 74:81-100. [PMID: 32530732 DOI: 10.1146/annurev-micro-022620-014327] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Methodological advances over the past two decades have propelled plant microbiome research, allowing the field to comprehensively test ideas proposed over a century ago and generate many new hypotheses. Studying the distribution of microbial taxa and genes across plant habitats has revealed the importance of various ecological and evolutionary forces shaping plant microbiota. In particular, selection imposed by plant habitats strongly shapes the diversity and composition of microbiota and leads to microbial adaptation associated with navigating the plant immune system and utilizing plant-derived resources. Reductionist approaches have demonstrated that the interaction between plant immunity and the plant microbiome is, in fact, bidirectional and that plants, microbiota, and the environment shape a complex chemical dialogue that collectively orchestrates the plantmicrobiome. The next stage in plant microbiome research will require the integration of ecological and reductionist approaches to establish a general understanding of the assembly and function in both natural and managed environments.
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Affiliation(s)
- Connor R Fitzpatrick
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Isai Salas-González
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; .,Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jonathan M Conway
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Omri M Finkel
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Sarah Gilbert
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Dor Russ
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;
| | - Paulo José Pereira Lima Teixeira
- Departamento de Ciências Biológicas, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Universidade de São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil
| | - Jeffery L Dangl
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; .,Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.,Howard Hughes Medical Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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41
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Morcillo RJL, Singh SK, He D, Vílchez JI, Kaushal R, Wang W, Huang W, Paré PW, Zhang H. Bacteria-derived diacetyl enhances Arabidopsis phosphate starvation responses partially through the DELLA-dependent gibberellin signaling pathway. PLANT SIGNALING & BEHAVIOR 2020; 15:1740872. [PMID: 32183580 PMCID: PMC7194389 DOI: 10.1080/15592324.2020.1740872] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Plant growth-promoting rhizobacteria (PGPR) are naturally occurring soil microorganisms that colonize roots and stimulate plant growth. Some PGPR strains can directly regulate plant growth in the absence of physical contact with the plant, via volatile organic compounds (VOCs) emissions. Recently, we have described that Arabidopsis thaliana respond differentially to diacetyl, a VOC from Bacillus amyloliquefaciens strain GB03 (GB03), through integral modulation of the immune system and the phosphate-starvation response (PSR) system, resulting in either mutualism or immunity. Under phosphate deficient conditions, diacetyl enhances salicylic acid- and jasmonic acid-mediated immunity and consequently causes plant hyper-sensitivity to phosphate deficiency. Here, we show that application of exogenous gibberellin (GA) partially alleviates the deleterious effect caused by either B. amyloliquefaciens GB03 VOCs or diacetyl in Arabidopsis under phosphate deficient conditions, while DELLA quadruple mutant exposed to GB03 VOCs exhibits a partial reduction on the stress symptoms. Moreover, diacetyl appears to enhance DELLA protein accumulation and increase the expression of several GA deactivation-related genes. These findings suggest that the DELLA-mediated GA signaling pathway is involved in the bi-faceted role of GB03 VOCs in regulating plant growth.
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Affiliation(s)
- Rafael J. L. Morcillo
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
- Institute for Water Research and Department of Microbiology, University of Granada, Granada, Spain
| | - Sunil K. Singh
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Danxia He
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Juan I. Vílchez
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Richa Kaushal
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wei Wang
- Research Centre, Shanghai Chenshan Botanical Garden, Shanghai, China
| | - Weichang Huang
- Research Centre, Shanghai Chenshan Botanical Garden, Shanghai, China
| | - Paul W. Paré
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX, USA
| | - Huiming Zhang
- PSC, Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China
- CONTACT Huiming Zhang PSC,Shanghai Center for Plant Stress Biology, and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
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Zuccaro A. Plant phosphate status drives host microbial preferences: a trade-off between fungi and bacteria. EMBO J 2020; 39:e104144. [PMID: 31886558 PMCID: PMC6960440 DOI: 10.15252/embj.2019104144] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Recent discoveries show that plant recruitment of fungi and bacteria in a non-mycorrhizal host follows different strategies dependent on phosphate availability. A new study by Morcillo et al (2019) demonstrates that volatile compounds synthesized by rhizobacteria contribute to phosphate starvation response-dependent regulation of bacterial colonization and immune system activation in Arabidopsis thaliana plants.
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Affiliation(s)
- Alga Zuccaro
- Cluster of Excellence on Plant Sciences (CEPLAS)University of CologneCologneGermany
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