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Cortez AO, Yoshinaga N, Mori N, Hwang SY. Plant growth-promoting rhizobacteria modulate induced corn defense against Spodoptera litura (Lepidoptera: Noctuidae). Biosci Biotechnol Biochem 2024; 88:872-884. [PMID: 38782714 DOI: 10.1093/bbb/zbae073] [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: 01/03/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024]
Abstract
Common cutworm, Spodoptera litura is an important pest of corn causing significant crop yield loss. Synthetic insecticides have mostly been used to combat this pest, raising human and environmental health concerns. Plant growth-promoting rhizobacteria (PGPR) could compensate for or augment the harmful effects of agrochemicals. Herein, we aimed to assess whether PGPR-induced defenses in corn plants impact the host-plant selection behavior of S. litura. Headspace volatile organic compounds were analyzed using gas chromatography-mass spectrometry. Larvae fed inoculated corn exhibited lower weights and relative growth rate than noninoculated plants. Under choice experiments, PGPR-treated plants significantly reduced percentage leaf damage area and oviposition rate compared to untreated plants. Volatile organic compound ratio emission varied significantly between control and PGPR treatments, which, in part, explains feeding and oviposition deterrence in PGPR-treated plants. The results demonstrate that PGPR inoculation can enhance corn resistance to S. litura, making it a promising candidate for crop protection strategies.
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Affiliation(s)
- Amado O Cortez
- Insect-Plant Interaction Laboratory, Department of Entomology, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
- Department of Crop Science, College of Agriculture, Isabela State University, Echague, Isabela, the Philippines
| | - Naoko Yoshinaga
- Chemical Ecology Laboratory, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Naoki Mori
- Chemical Ecology Laboratory, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Shaw-Yhi Hwang
- Insect-Plant Interaction Laboratory, Department of Entomology, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
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2
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Chan TH, Ariyawansa HA, Rho H. Thermotolerant plant growth-promoting bacteria enhance growth and nutrient uptake of lettuce under heat stress conditions by altering stomatal movement and chlorophyll fluorescence. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2024; 30:969-984. [PMID: 38974362 PMCID: PMC11222360 DOI: 10.1007/s12298-024-01470-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 05/21/2024] [Accepted: 06/10/2024] [Indexed: 07/09/2024]
Abstract
This study investigates the effects of selected PGPB on lettuce growth performance under heat-stress conditions. Bacterial plant growth-promoting potentials have been characterized and identified successfully in ongoing studies. Based on in vitro plant growth-promoting potential, the top five bacteria were ranked and identified as Acinetobacter sp. GRB12, Bacillus sp. GFB04, Klebsiella sp. LFB06, Klebsiella sp. GRB10, and Klebsiella sp. GRB04. They were mixed to inoculate on lettuce (Lactuca sativa L.) in temperature-controlled greenhouses. Another in-vivo chamber experiment was conducted by using Bacillus sp. GFB04 and Klebsiella sp. GFB10. Plant physiological traits (chlorophyll fluorescence and transpiration) and nutrient contents were measured at harvest, along with growth, development, and yield component analyses. Uninoculated plants under heat-stress condition showed poor growth performance. In contrast, plants with PGPB inoculation showed improved growth under heat-stress conditions, as the uptake of nutrients was facilitated by the symbionts. Inoculation also improved lettuce photosystem II efficiency and decreased total water use under heat stress. In conclusion, the current study suggests that PGPB inoculation successfully enhances lettuce heat-tolerance. PGPB application could potentially help improve sustainable production of lettuce with less fertilization under increasing temperatures. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-024-01470-5.
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Affiliation(s)
- Tsz Hei Chan
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, 10617 Taiwan
| | - Hiran Anjana Ariyawansa
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, 10617 Taiwan
| | - Hyungmin Rho
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, 10617 Taiwan
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3
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Shrivas VL, Choudhary AK, Shidture S, Rambia A, Hariprasad P, Sharma A, Sharma S. Organic amendments modulate the crop yield and rhizospheric bacterial community diversity: a 3-year field study with Cajanus cajan. Int Microbiol 2024; 27:477-490. [PMID: 37500936 DOI: 10.1007/s10123-023-00396-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/19/2023] [Accepted: 07/01/2023] [Indexed: 07/29/2023]
Abstract
Excessive use of chemicals to enhance soil nutrient status and crop yield has resulted in a decline in soil health. Organic farming promotes organic amendments, which help to balance the ecosystem. Understanding the dynamic patterns of belowground microbial populations is essential for developing sustainable agricultural systems. Therefore, the study was designed to evaluate the effect of different agri-practices on rhizospheric bacterial diversity and crop yield in an Indian agricultural system. A 3-year field experiment was set up in a randomized block design using Cajanus cajan as a model crop, comparing conventional farming with organic practice (with animal manure and bio-compost as amendments). Plant and rhizospheric soil samples were collected at the harvest stage for assessing various growth attributes, and for characterizing rhizospheric bacterial diversity. Enhanced crop productivity was seen in conventional farming, with a 2.2-fold increase in grain yield over control. However, over the 3 years, an overall positive impact was observed in the bio-compost-based organic amendment, in terms of bacterial abundance, over other treatments. At the harvest stage of the third cropping season, the bacterial diversity in the organic treatments showed little similarity to the initial bacterial community composition of the amendment applied, indicating stabilization along the growth cycles. The study emphasizes the significance of the choice of the amendment for ushering in agricultural sustainability.
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Affiliation(s)
- Vijay Laxmi Shrivas
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Anil K Choudhary
- Division of Agronomy, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
- ICAR-Central Potato Research Institute, Shimla, Himachal Pradesh, 171001, India
| | - Shubham Shidture
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, 411021, India
| | - Aayushi Rambia
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, 411021, India
| | - P Hariprasad
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Avinash Sharma
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, 411021, India.
| | - Shilpi Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, 110016, India.
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4
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Papin M, Philippot L, Breuil MC, Bru D, Dreux-Zigha A, Mounier A, Le Roux X, Rouard N, Spor A. Survival of a microbial inoculant in soil after recurrent inoculations. Sci Rep 2024; 14:4177. [PMID: 38378706 PMCID: PMC10879113 DOI: 10.1038/s41598-024-54069-x] [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: 10/31/2023] [Accepted: 02/08/2024] [Indexed: 02/22/2024] Open
Abstract
Microbial inoculants are attracting growing interest in agriculture, but their efficacy remains unreliable in relation to their poor survival, partly due to the competition with the soil resident community. We hypothesised that recurrent inoculation could gradually alleviate this competition and improve the survival of the inoculant while increasing its impact on the resident bacterial community. We tested the effectiveness of such strategy with four inoculation sequences of Pseudomonas fluorescens strain B177 in soil microcosms with increasing number and frequency of inoculation, compared to a non-inoculated control. Each sequence was carried out at two inoculation densities (106 and 108 cfu.g soil-1). The four-inoculation sequence induced a higher abundance of P. fluorescens, 2 weeks after the last inoculation. No impact of inoculation sequences was observed on the resident community diversity and composition. Differential abundance analysis identified only 28 out of 576 dominants OTUs affected by the high-density inoculum, whatever the inoculation sequence. Recurrent inoculations induced a strong accumulation of nitrate, not explained by the abundance of nitrifying or nitrate-reducing microorganisms. In summary, inoculant density rather than inoculation pattern matters for inoculation effect on the resident bacterial communities, while recurrent inoculation allowed to slightly enhance the survival of the inoculant and strongly increased soil nitrate content.
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Affiliation(s)
- M Papin
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
| | - L Philippot
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France.
| | - M C Breuil
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
| | - D Bru
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
| | - A Dreux-Zigha
- GreenCell Biopole Clermont Limagne, 63360, St Beauzire, France
| | - A Mounier
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
| | - X Le Roux
- Universite Claude Bernard Lyon 1, Microbial Ecology Centre LEM, INRAE, CNRS, VetAgroSup, UMR INRAE 1418, 43 Blvd 11 Novembre 1918, 69622, Villeurbanne, France
| | - N Rouard
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
| | - A Spor
- Univ Bourgogne Franche Comte, INRAE, Institut Agro Dijon, Agroecologie, 17 Rue Sully, 21000, Dijon, France
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Li P, Tedersoo L, Crowther TW, Dumbrell AJ, Dini-Andreote F, Bahram M, Kuang L, Li T, Wu M, Jiang Y, Luan L, Saleem M, de Vries FT, Li Z, Wang B, Jiang J. Fossil-fuel-dependent scenarios could lead to a significant decline of global plant-beneficial bacteria abundance in soils by 2100. NATURE FOOD 2023; 4:996-1006. [PMID: 37904026 DOI: 10.1038/s43016-023-00869-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/29/2023] [Indexed: 11/01/2023]
Abstract
Exploiting the potential benefits of plant-associated microbes represents a sustainable approach to enhancing crop productivity. Plant-beneficial bacteria (PBB) provide multiple benefits to plants. However, the biogeography and community structure remain largely unknown. Here we constructed a PBB database to couple microbial taxonomy with their plant-beneficial traits and analysed the global atlas of potential PBB from 4,245 soil samples. We show that the diversity of PBB peaks in low-latitude regions, following a strong latitudinal diversity gradient. The distribution of potential PBB was primarily governed by environmental filtering, which was mainly determined by local climate. Our projections showed that fossil-fuel-dependent future scenarios would lead to a significant decline of potential PBB by 2100, especially biocontrol agents (-1.03%) and stress resistance bacteria (-0.61%), which may potentially threaten global food production and (agro)ecosystem services.
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Affiliation(s)
- Pengfa Li
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, China
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Leho Tedersoo
- Mycology and Microbiology Center, University of Tartu, Tartu, Estonia
| | | | - Alex J Dumbrell
- School of Life Sciences, University of Essex, Colchester, UK
| | - Francisco Dini-Andreote
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Mohammad Bahram
- Mycology and Microbiology Center, University of Tartu, Tartu, Estonia
| | - Lu Kuang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, China
| | - Ting Li
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, China
| | - Meng Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Yuji Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Lu Luan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Muhammad Saleem
- Department of Biological Sciences, Alabama State University, Montgomery, AL, USA
| | - Franciska T de Vries
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands
| | - Zhongpei Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Baozhan Wang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, China.
| | - Jiandong Jiang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, China.
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6
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Fang K, Yang AL, Li YX, Zeng ZY, Wang RF, Li T, Zhao ZW, Zhang HB. Native plants change the endophyte assembly and growth of an invasive plant in response to climatic factors. Appl Environ Microbiol 2023; 89:e0109323. [PMID: 37815356 PMCID: PMC10617555 DOI: 10.1128/aem.01093-23] [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: 06/28/2023] [Accepted: 08/08/2023] [Indexed: 10/11/2023] Open
Abstract
Climate change, microbial endophytes, and local plants can affect the establishment and expansion of invasive species, yet no study has been performed to assess these interactions. Using a growth chamber, we integrated the belowground (rhizosphere soils) and aboveground (mixture of mature leaf and leaf litter) microbiota into an experimental framework to evaluate the impacts of four native plants acting as microbial inoculation sources on endophyte assembly and growth of the invasive plant Ageratina adenophora in response to drought stress and temperature change. We found that fungal and bacterial enrichment in the leaves and roots of A. adenophora exhibited distinct patterns in response to climatic factors. Many fungi were enriched in roots in response to high temperature and drought stress; in contrast, many bacteria were enriched in leaves in response to low temperature and drought stress. Inoculation of microbiota from phylogenetically close native plant species (i.e., Asteraceae Artemisia atrovirens) causes the recipient plant A. adenophora (Asteraceae) to enrich dominant microbial species from inoculation sources, which commonly results in a lower dissimilar endophytic microbiota and thus produces more negative growth effects when compared to non-Asteraceae inoculations. Drought, microbial inoculation source, and temperature directly impacted the growth of A. adenophora. Both drought and inoculation also indirectly impacted the growth of A. adenophora by changing the root endophytic fungal assembly. Our data indicate that native plant identity can greatly impact the endophyte assembly and host growth of invasive plants, which is regulated by drought and temperature.IMPORTANCEThere has been increasing interest in the interactions between global changes and plant invasions; however, it remains to quantify the role of microbial endophytes in plant invasion with a consideration of their variation in the root vs leaf of hosts, as well as the linkages between microbial inoculations, such as native plant species, and climatic factors, such as temperature and drought. Our study found that local plants acting as microbial inoculants can impact fungal and bacterial enrichment in the leaves and roots of the invasive plant Ageratina adenophora and thus produce distinct growth effects in response to climatic factors; endophyte-mediated invasion of A. adenophora is expected to operate more effectively under favorable moisture. Our study is important for understanding the interactions between climate change, microbial endophytes, and local plant identity in the establishment and expansion of invasive species.
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Affiliation(s)
- Kai Fang
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
- Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Ai-Ling Yang
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Yu-Xuan Li
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
| | - Zhao-Ying Zeng
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Rui-Fang Wang
- College of Agriculture and Forestry, Puer University, Puer, Yunnan, China
| | - Tao Li
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
| | - Zhi-Wei Zhao
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
| | - Han-Bo Zhang
- State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan, Yunnan University, Kunming, China
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7
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Lu C, Zhang Z, Guo P, Wang R, Liu T, Luo J, Hao B, Wang Y, Guo W. Synergistic mechanisms of bioorganic fertilizer and AMF driving rhizosphere bacterial community to improve phytoremediation efficiency of multiple HMs-contaminated saline soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 883:163708. [PMID: 37105481 DOI: 10.1016/j.scitotenv.2023.163708] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/28/2023] [Accepted: 04/20/2023] [Indexed: 06/03/2023]
Abstract
The addition of Arbuscular mycorrhizal fungi (AMF) or bioorganic fertilizer (BOF) alone has been reported to enhance plant tolerance to heavy metals and salt stress and promote plant growth, while their synergistic effects on plant growth and rhizosphere microorganism are largely unknown. This study explored the effects of AMF (Rhizophagus intraradices), BOF and BOF + RI assisted phytoremediation on heavy metals contaminated saline soil improvement and revealed the microbial mechanism. For this purpose, a pot trial consisting of four treatments (CK, RI, BOF and BOF + RI) was carried out. The results showed that the biomass, nutrient element contents, the accumulation of heavy metals and Na of Astragalus adsurgens and soil properties were most significantly improved by BOF + RI. BOF + RI significantly impacted rhizosphere microbial diversity, abundance and community composition. Chloroflexi and Patescibacteria at the phylum level and Actinomadura, Iamia, and Desulfosporosinus at the genus level were significantly enriched in BOF + RI. Network analysis revealed that BOF + RI significantly changed the keystone and enhanced complexity and interaction. Most of the keystones had roles in promoting plant growth and stress resistance. This study suggested that phytoremediation assisted by BOF and AMF is an attractive approach to ameliorate heavy metals contaminated saline soil.
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Affiliation(s)
- Chengyan Lu
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Zhechao Zhang
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Peiran Guo
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Run Wang
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Tai Liu
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Junqing Luo
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Baihui Hao
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Yuchen Wang
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
| | - Wei Guo
- Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
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8
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Afkhami ME. Past microbial stress benefits tree resilience. Science 2023; 380:798-799. [PMID: 37228194 DOI: 10.1126/science.adi1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Soil microbiota from stressful environments provide an avenue for climate resilience.
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9
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Allsup CM, George I, Lankau RA. Shifting microbial communities can enhance tree tolerance to changing climates. Science 2023; 380:835-840. [PMID: 37228219 DOI: 10.1126/science.adf2027] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 04/04/2023] [Indexed: 05/27/2023]
Abstract
Climate change is pushing species outside of their evolved tolerances. Plant populations must acclimate, adapt, or migrate to avoid extinction. However, because plants associate with diverse microbial communities that shape their phenotypes, shifts in microbial associations may provide an alternative source of climate tolerance. Here, we show that tree seedlings inoculated with microbial communities sourced from drier, warmer, or colder sites displayed higher survival when faced with drought, heat, or cold stress, respectively. Microbially mediated drought tolerance was associated with increased diversity of arbuscular mycorrhizal fungi, whereas cold tolerance was associated with lower fungal richness, likely reflecting a reduced burden of nonadapted fungal taxa. Understanding microbially mediated climate tolerance may enhance our ability to predict and manage the adaptability of forest ecosystems to changing climates.
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Affiliation(s)
- Cassandra M Allsup
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | - Isabelle George
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | - Richard A Lankau
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
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10
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Yang P, Zhao L, Gao YG, Xia Y. Detection, Diagnosis, and Preventive Management of the Bacterial Plant Pathogen Pseudomonas syringae. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091765. [PMID: 37176823 PMCID: PMC10181079 DOI: 10.3390/plants12091765] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/01/2023] [Accepted: 04/14/2023] [Indexed: 05/15/2023]
Abstract
Plant diseases caused by the pathogen Pseudomonas syringae are serious problems for various plant species worldwide. Accurate detection and diagnosis of P. syringae infections are critical for the effective management of these plant diseases. In this review, we summarize the current methods for the detection and diagnosis of P. syringae, including traditional techniques such as culture isolation and microscopy, and relatively newer techniques such as PCR and ELISA. It should be noted that each method has its advantages and disadvantages, and the choice of each method depends on the specific requirements, resources of each laboratory, and field settings. We also discuss the future trends in this field, such as the need for more sensitive and specific methods to detect the pathogens at low concentrations and the methods that can be used to diagnose P. syringae infections that are co-existing with other pathogens. Modern technologies such as genomics and proteomics could lead to the development of new methods of highly accurate detection and diagnosis based on the analysis of genetic and protein markers of the pathogens. Furthermore, using machine learning algorithms to analyze large data sets could yield new insights into the biology of P. syringae and novel diagnostic strategies. This review could enhance our understanding of P. syringae and help foster the development of more effective management techniques of the diseases caused by related pathogens.
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Affiliation(s)
- Piao Yang
- Department of Plant Pathology, College of Food, Agricultural, and Environmental Science, The Ohio State University, Columbus, OH 43210, USA
| | - Lijing Zhao
- Department of Plant Pathology, College of Food, Agricultural, and Environmental Science, The Ohio State University, Columbus, OH 43210, USA
| | - Yu Gary Gao
- OSU South Centers, The Ohio State University, 1864 Shyville Road, Piketon, OH 45661, USA
- Department of Extension, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Ye Xia
- Department of Plant Pathology, College of Food, Agricultural, and Environmental Science, The Ohio State University, Columbus, OH 43210, USA
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11
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Vincent M, Boubakri H, Gasser M, Hay AE, Herrera-Belaroussi A. What contribution of plant immune responses in Alnus glutinosa-Frankia symbiotic interactions? Symbiosis 2023. [DOI: 10.1007/s13199-022-00889-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Wang J, Li SP, Ge Y, Wang XY, Gao S, Chen T, Yu FH. Darwin's naturalization conundrum reconciled by changes of species interactions. Ecology 2023; 104:e3850. [PMID: 36173233 DOI: 10.1002/ecy.3850] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 06/25/2022] [Accepted: 07/06/2022] [Indexed: 02/01/2023]
Abstract
Although phylogenetic distance between native and exotic species has a close link with their interactions, it is still unclear how environmental stresses and species interactions influence the relationship between phylogenetic distance and biological invasions. Here we assessed the effect of invader-native phylogenetic distance on the growth of the invader (Symphyotrichum subulatum) under three levels of drought (no, moderate, or intense drought). Under no drought, interspecific competition between close relatives was the dominant process and native communities more closely related to the invader showed higher resistance to invasion, supporting Darwin's naturalization hypothesis. In contrast, under intense drought, facilitation between close relatives by mutualism with arbuscular mycorrhizal fungi (AMF) became more important, and the invader became more successful in their more closely related native communities, supporting the preadaptation hypothesis. The colonization rate of AMF of the invader was higher in more closely related native communities regardless of the drought treatment, but it was only positively related to invader biomass under intense drought. Therefore, the shift of species interactions from competition to facilitation may be ascribed to the promotion of AMF to invasion occurring under intense drought, which leads to the effect of closely related natives on the invader shifting from negative to positive. Our results provide a new angle to resolve Darwin's naturalization conundrum from the change of species interactions along a stress gradient, and provide important clues for invasion management when species interactions change in response to global climatic change.
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Affiliation(s)
- Jiang Wang
- School of Life Science/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China
| | - Shao-Peng Li
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Yuan Ge
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Xiao-Yan Wang
- School of Life Science/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China
| | - Song Gao
- School of Life Science/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China
| | - Tong Chen
- School of Life Science/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China
| | - Fei-Hai Yu
- School of Life Science/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China
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13
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Xia H, Yang C, Liang Y, He Z, Guo Y, Lang Y, Wei J, Tian X, Lin L, Deng H, Wang J, Lv X, Liang D. Melatonin and arbuscular mycorrhizal fungi synergistically improve drought toleration in kiwifruit seedlings by increasing mycorrhizal colonization and nutrient uptake. FRONTIERS IN PLANT SCIENCE 2022; 13:1073917. [PMID: 36531404 PMCID: PMC9752077 DOI: 10.3389/fpls.2022.1073917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Kiwifruit is a vine fruit tree that is vulnerable to water deficiency due to its shallow root system and large leaves. Although mycorrhizal inoculation and melatonin application has been proved to improve plants drought tolerance, their interaction effects are still unclear. In this study, arbuscular mycorrhizal (AM) fungi incubation and melatonin (MT) irrigation were applied to kiwifruit seedlings alone or in combination to investigate their effect on drought tolerance. The results revealed that AM had more effect on promoting root biomass, water use efficiency, and uptake of nitrogen, phosphorus and iron. While MT was more effective in promoting shoot biomass and antioxidant enzyme activities to remove reactive oxygen species accumulation. Moreover, MT supplementary significantly increased the AM colonization, spore density and hyphal length density in roots. Therefore, combined application of AM fungi and MT had additive effects on improvement biomass accumulation, increasing chlorophyll content, photosynthetic efficiency, catalase activity, and decreasing malondialdehyde accumulation under drought stress, thus promoting plant growth and alleviating the drought damage to plant. These results provide guidance for AM and MT combined application to improve abiotic resistance in plants.
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Affiliation(s)
- Hui Xia
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Chunguo Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yan Liang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zunzhen He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yuqi Guo
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yuxuan Lang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Jie Wei
- College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xinbo Tian
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Lijin Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Honghong Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Jin Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Xiulan Lv
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Dong Liang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
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14
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Tufail MA, Ayyub M, Irfan M, Shakoor A, Chibani CM, Schmitz RA. Endophytic bacteria perform better than endophytic fungi in improving plant growth under drought stress: A meta-comparison spanning 12 years (2010-2021). PHYSIOLOGIA PLANTARUM 2022; 174:e13806. [PMID: 36271716 DOI: 10.1111/ppl.13806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/30/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Drought stress is a serious issue that affects agricultural productivity all around the world. Several researchers have reported using plant growth-promoting endophytic bacteria to enhance the drought resistance of crops. However, how endophytic bacteria and endophytic fungi are effectively stimulating plant growth under drought stress is still largely unknown. In this article, a global meta-analysis was undertaken to compare the plant growth-promoting effects of bacterial and fungal endophytes and to identify the processes by which both types of endophytes stimulate plant growth under drought stress. Moreover, this meta-analysis enlightens how plant growth promotion varies across crop types (C3 vs. C4 and monocot vs. dicot), experiment types (in vitro vs. pots vs. field), and the inoculation methods (seed vs. seedling). Specifically, this research included 75 peer-reviewed publications, 170 experiments, 20 distinct bacterial genera, and eight fungal classes. On average, both endophytic bacterial and fungal inoculation increased plant dry and fresh biomass under drought stress. The effect of endophytic bacterial inoculation on plant dry biomass, shoot dry biomass, root length, photosynthetic rate, leaf area, and gibberellins productions were at least two times greater than that of fungal inoculation. In addition, under drought stress, bacterial inoculation increased the proline content of C4 plants. Overall, the findings of this meta-analysis indicate that both endophytic bacterial and fungal inoculation of plants is beneficial under drought conditions, but the extent of benefit is higher with endophytic bacteria inoculation but it varies across crop type, experiment type, and inoculation method.
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Affiliation(s)
| | - Muhaimen Ayyub
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Irfan
- Soil and Environmental Sciences Division, Nuclear Institute of Agriculture (NIA), Tandojam, Pakistan
| | - Awais Shakoor
- Teagasc, Environment, Soils, and Land-Use Department, Wexford, Ireland
| | | | - Ruth A Schmitz
- Institute for Microbiology, Christian-Albrechts-University Kiel, Kiel, Germany
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15
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Dadzie FA, Moles AT, Erickson TE, Slavich E, Muñoz‐Rojas M. Native bacteria and cyanobacteria can influence seedling emergence and growth of native plants used in dryland restoration. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frederick A. Dadzie
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences UNSW Sydney Sydney New South Wales Australia
- Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Sciences UNSW Sydney Sydney New South Wales Australia
| | - Angela T. Moles
- Evolution & Ecology Research Centre, School of Biological, Earth and Environmental Sciences UNSW Sydney Sydney New South Wales Australia
| | - Todd E. Erickson
- School of Biological Sciences University of Western Australia Crawley Western Australia Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions Kings Park Western Australia Australia
| | - Eve Slavich
- School of Mathematics and Statistics UNSW Sydney Sydney New South Wales Australia
| | - Miriam Muñoz‐Rojas
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences UNSW Sydney Sydney New South Wales Australia
- Department of Plant Biology and Ecology University of Seville Seville Spain
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16
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Sanjenbam P, Shivaprasad PV, Agashe D. Impact of Phyllosphere Methylobacterium on Host Rice Landraces. Microbiol Spectr 2022; 10:e0081022. [PMID: 35856668 PMCID: PMC9431194 DOI: 10.1128/spectrum.00810-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/24/2022] [Indexed: 11/20/2022] Open
Abstract
The genus Methylobacterium includes widespread plant-associated bacteria that are abundant in the plant phyllosphere (leaf surfaces), consume plant-secreted methanol, and can produce plant growth-promoting metabolites. However, despite the potential to increase agricultural productivity, their impact on host fitness in the natural environment is relatively poorly understood. Here, we conducted field experiments with three traditionally cultivated rice landraces from northeastern India. We inoculated seedlings with native versus nonnative phyllosphere Methylobacterium strains and found significant impacts on plant growth and grain yield. However, these effects were variable. Whereas some Methylobacterium isolates were beneficial for their host, others had no impact or were no more beneficial than the bacterial growth medium on its own. Host plant benefits were not consistently associated with Methylobacterium colonization and did not have altered phyllosphere microbiome composition, changes in the early expression of plant stress response pathways, or bacterial auxin production. We provide the first demonstration of the benefits of phyllosphere Methylobacterium for rice yield under field conditions and highlight the need for further analysis to understand the mechanisms underlying these benefits. Given that the host landrace-Methylobacterium relationship was not generalizable, future agricultural applications will require careful testing to identify coevolved host-bacterium pairs that may enhance the productivity of high-value rice varieties. IMPORTANCE Plants are associated with diverse microbes in nature. Do the microbes increase host plant health, and can they be used for agricultural applications? This is an important question that must be answered in the field rather than in the laboratory or greenhouse. We tested the effects of native, leaf-inhabiting bacteria (genus Methylobacterium) on traditionally cultivated rice varieties in a crop field. We found that inoculation with some bacteria increased rice grain production substantially while a nonnative bacterium reduced plant health. Overall, the effect of bacterial inoculation varied across pairs of rice varieties and their native bacteria. Thus, knowledge of evolved associations between specific bacteria hosted by specific rice varieties is necessary to develop ways to increase the yield of traditional rice landraces and preserve these important sources of cultural and genetic diversity.
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Affiliation(s)
- Pratibha Sanjenbam
- National Center for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India
| | - P. V. Shivaprasad
- National Center for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India
| | - Deepa Agashe
- National Center for Biological Sciences, Tata Institute of Fundamental Research, Bangalore, India
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17
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Bastías DA, Applegate ER, Johnson LJ, Card SD. Factors controlling the effects of mutualistic bacteria on plants associated with fungi. Ecol Lett 2022; 25:1879-1888. [PMID: 35810320 PMCID: PMC9544109 DOI: 10.1111/ele.14073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/31/2022] [Accepted: 06/21/2022] [Indexed: 11/29/2022]
Abstract
Plants interacting with mutualistic fungi (MF) or antagonistic fungi (AF) can form associations with bacteria. We assessed whether the performance gain conferred by mutualistic bacteria to fungal-associated plants is affected by the interaction between symbiont traits, type of bacterial-protective traits against AF and abiotic/biotic stresses. Results showed that (A) performance gain conferred by bacteria to MF-associated plants was greater when symbionts promoted distinct rather than similar plant functions, (B) bacterial-based alleviation of the AF's negative effect on plants was independent of the type of protective trait, (C) bacteria promoted a greater performance of symbiotic plants in presence of biotic, but not abiotic, stress compared to stress-free situations. The plant performance gain was not affected by any fungal-bacterial trait combination but optimised when bacteria conferred resistance traits in biotic stress situations. The effects of bacteria on fungal-associated plants were controlled by the interaction between the symbionts' functional traits and the relationship between bacterial traits and abiotic/biotic stresses.
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Affiliation(s)
- Daniel A Bastías
- Grasslands Research Centre, AgResearch Limited, Palmerston North, New Zealand
| | - Emma R Applegate
- Grasslands Research Centre, AgResearch Limited, Palmerston North, New Zealand
| | - Linda J Johnson
- Grasslands Research Centre, AgResearch Limited, Palmerston North, New Zealand
| | - Stuart D Card
- Grasslands Research Centre, AgResearch Limited, Palmerston North, New Zealand
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18
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Keeler AM, Rafferty NE. Legume germination is delayed in dry soils and in sterile soils devoid of microbial mutualists: Species-specific implications for upward range expansions. Ecol Evol 2022; 12:e9186. [PMID: 36016820 PMCID: PMC9398887 DOI: 10.1002/ece3.9186] [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: 04/01/2022] [Revised: 06/27/2022] [Accepted: 07/15/2022] [Indexed: 11/14/2022] Open
Abstract
Climate change is affecting species and their mutualists and can lead to the weakening or loss of important interspecific interactions. Through independent shifts in partner phenology and distribution, climatic stress can separate mutualists temporally or spatially, leading to alterations in partner functional traits and fitness. Here, we explored the effects of the loss of microbial mutualists on legume germination success and phenology. In particular, we assessed the effects of mutualism loss via soil sterilization, increased drought, and introduction to novel soils found beyond the current distributions of two focal legume species in subalpine environments. Through common garden experiments in controlled environments, we found evidence that soil sterilization (and consequent microbial absence) and dry soils caused species-specific phenological delays of 2-5 weeks in germination, likely as a result of interaction loss between legumes and specialized germination-promoting soil microbes, such as mutualistic rhizobia. Delays in germination caused by a mismatch between legumes and beneficial microbes could negatively affect legume fitness through increased plant-plant competition later in the season. Additionally, we found evidence of the presence of beneficial microbes beyond the current elevational range of one of our focal legumes, which may allow for expansion of the leading edge, although harsh abiotic factors in the alpine may hinder this. Alterations in the strength of soil microbe-legume mutualisms may lead to reduced fitness and altered demography for both soil microbes and legumes.
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Affiliation(s)
- Andrea M. Keeler
- Department of Evolution, Ecology, and Organismal BiologyUniversity of California, RiversideRiversideCaliforniaUSA
- Rocky Mountain Biological LaboratoryCrested ButteColoradoUSA
| | - Nicole E. Rafferty
- Department of Evolution, Ecology, and Organismal BiologyUniversity of California, RiversideRiversideCaliforniaUSA
- Rocky Mountain Biological LaboratoryCrested ButteColoradoUSA
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19
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Abd El-Mageed TA, Gyushi MAH, Hemida KA, El-Saadony MT, Abd El-Mageed SA, Abdalla H, AbuQamar SF, El-Tarabily KA, Abdelkhalik A. Coapplication of Effective Microorganisms and Nanomagnesium Boosts the Agronomic, Physio-Biochemical, Osmolytes, and Antioxidants Defenses Against Salt Stress in Ipomoea batatas. FRONTIERS IN PLANT SCIENCE 2022; 13:883274. [PMID: 35909720 PMCID: PMC9326395 DOI: 10.3389/fpls.2022.883274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/19/2022] [Indexed: 05/19/2023]
Abstract
The application of bio- and nanofertilizers are undoubtedly opening new sustainable approaches toward enhancing abiotic stress tolerance in crops. In this study, we evaluated the application of effective microorganisms (EMs) of five groups belonging to photosynthetic bacteria, lactic acid bacteria, yeast, actinobacteria, and fermenting fungi combined with magnesium oxide (MgO) nanoparticles (MgO-NP) on the growth and productivity of sweet potato plants grown in salt-affected soils. In two field experiments carried out in 2020 and 2021, we tested the impacts of EMs using two treatments (with vs. without EMs as soil drench) coupled with three foliar applications of MgO-NP (0, 50, and 100 μg ml–1 of MgO, representing MgO-NP0, MgO-NP50, and MgO-NP100, respectively). In our efforts to investigate the EMs:MgO-NP effects, the performance (growth and yield), nutrient acquisition, and physio-biochemical attributes of sweet potatoes grown in salt-affected soil (7.56 dS m–1) were assessed. Our results revealed that salinity stress significantly reduced the growth parameters, yield traits, photosynthetic pigment content (chlorophylls a and b, and carotenoids), cell membrane stability, relative water content, and nutrient acquisition of sweet potatoes. However, the EMs+ and/or MgO-NP-treated plants showed high tolerance to salt stress, specifically with a relatively superior increase when any of the biostimulants were combined. The application of EMs and/or MgO-NP improved osmotic stress tolerance by increasing the relative water content and membrane integrity. These positive responses owed to increase the osmolytes level (proline, free amino acids, and soluble sugars) and antioxidative compounds (non-enzymatic concentration, enzymatic activities, phenolic acid, and carotenoids). We also noticed that soil salinity significantly increased the Na+ content, whereas EMS+ and/or MgO-NP-treated plants exhibited lower Na+ concentration and increased K+ concentration and K+/Na+ ratio. These improvements contributed to increasing the photosynthetic pigments, growth, and yield under salinity stress. The integrative application of EMs and MgO-NP showed higher efficacy bypassing all single treatments. Our findings indicated the potential of coapplying EMs and MgO-NP for future use in attenuating salt-induced damage beneficially promoting crop performance.
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Affiliation(s)
- Taia A. Abd El-Mageed
- Department of Soil and Water, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
| | - Mohammed A. H. Gyushi
- Department of Horticulture, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
| | - Khaulood A. Hemida
- Department of Botany, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Mohamed T. El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | | | - Hanan Abdalla
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Synan F. AbuQamar
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- *Correspondence: Synan F. AbuQamar,
| | - Khaled A. El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al-Ain, United Arab Emirates
- Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
- Khaled A. El-Tarabily,
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20
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Angulo V, Beriot N, Garcia-Hernandez E, Li E, Masteling R, Lau JA. Plant-microbe eco-evolutionary dynamics in a changing world. THE NEW PHYTOLOGIST 2022; 234:1919-1928. [PMID: 35114015 DOI: 10.1111/nph.18015] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Both plants and their associated microbiomes can respond strongly to anthropogenic environmental changes. These responses can be both ecological (e.g. a global change affecting plant demography or microbial community composition) and evolutionary (e.g. a global change altering natural selection on plant or microbial populations). As a result, global changes can catalyse eco-evolutionary feedbacks. Here, we take a plant-focused perspective to discuss how microbes mediate plant ecological responses to global change and how these ecological effects can influence plant evolutionary response to global change. We argue that the strong and functionally important relationships between plants and their associated microbes are particularly likely to result in eco-evolutionary feedbacks when perturbed by global changes and discuss how improved understanding of plant-microbe eco-evolutionary dynamics could inform conservation or even agriculture.
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Affiliation(s)
- Violeta Angulo
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, Padualaan 8, Utrecht, 3584 CH, the Netherlands
| | - Nicolas Beriot
- Soil Physics and Land Management Group, Wageningen University & Research, PO Box 47, Wageningen, 6700AA, the Netherlands
- Sustainable Use, Management and Reclamation of Soil and Water Research Group, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, Cartagena, 30203, Spain
| | - Edisa Garcia-Hernandez
- Microbial Community Ecology Group, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9700 CC, the Netherlands
| | - Erqin Li
- Plant-Microbe Interactions Group, Institute of Environmental Biology, Utrecht University, Padualaan 8, Utrecht, 3584 CH, the Netherlands
- Institut für Biologie, Freie Universität Berlin, Berlin, 14195, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, 14195, Germany
| | - Raul Masteling
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), PO Box 50, Wageningen, 6708 PB, the Netherlands
- Institute of Biology, Leiden University, Leiden, 2333 BE, the Netherlands
| | - Jennifer A Lau
- Biology Department and the Environmental Resilience Institute, Indiana University, 1001 East 3rd St., Bloomington, IN, 47405, USA
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21
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The Effects of Plant Health Status on the Community Structure and Metabolic Pathways of Rhizosphere Microbial Communities Associated with Solanum lycopersicum. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Powdery mildew disease caused by Oidium neolycopersici is one of the major diseases affecting tomato production in South Africa. Interestingly, limited studies exist on how this disease affects the community structure microbial communities associated with tomato plants employing shotgun metagenomics. In this study, we assess how the health status of a tomato plant affects the diversity of the rhizosphere microbial community. We collected soil samples from the rhizosphere of healthy (HR) and diseased (DR; powdery mildew infected) tomatoes, alongside bulk soil (BR), extracted DNA, and did sequencing using shotgun metagenomics. Our results demonstrated that the rhizosphere microbiome alongside some specific functions were abundant in HR followed by DR and bulk soil (BR) in the order HR > DR > BR. We found eighteen (18) bacterial phyla abundant in HR, including Actinobacteria, Acidobacteria, Aquificae, Bacteroidetes, etc. The dominant fungal phyla include; Ascomycota and Basidiomycota, while the prominent archaeal phyla are Thaumarchaeota, Crenarchaeota, and Euryarchaeota. Three (3) bacteria phyla dominated the DR samples; Bacteroidetes, Gemmatimonadetes, and Thermotoga. Our result also employed the SEED subsystem and revealed that the metabolic pathways involved were abundant in HR. The α-diversity demonstrates that there is no significant difference among the rhizosphere microbiomes across the sites, while β-diversity demonstrated a significant difference.
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22
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Berrios L, Rentsch JD. Linking Reactive Oxygen Species (ROS) to Abiotic and Biotic Feedbacks in Plant Microbiomes: The Dose Makes the Poison. Int J Mol Sci 2022; 23:ijms23084402. [PMID: 35457220 PMCID: PMC9030523 DOI: 10.3390/ijms23084402] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 12/13/2022] Open
Abstract
In nature, plants develop in complex, adaptive environments. Plants must therefore respond efficiently to environmental stressors to maintain homeostasis and enhance their fitness. Although many coordinated processes remain integral for achieving homeostasis and driving plant development, reactive oxygen species (ROS) function as critical, fast-acting orchestrators that link abiotic and biotic responses to plant homeostasis and development. In addition to the suite of enzymatic and non-enzymatic ROS processing pathways that plants possess, they also rely on their microbiota to buffer and maintain the oxidative window needed to balance anabolic and catabolic processes. Strong evidence has been communicated recently that links ROS regulation to the aggregated function(s) of commensal microbiota and plant-growth-promoting microbes. To date, many reports have put forth insightful syntheses that either detail ROS regulation across plant development (independent of plant microbiota) or examine abiotic–biotic feedbacks in plant microbiomes (independent of clear emphases on ROS regulation). Here we provide a novel synthesis that incorporates recent findings regarding ROS and plant development in the context of both microbiota regulation and plant-associated microbes. Specifically, we discuss various roles of ROS across plant development to strengthen the links between plant microbiome functioning and ROS regulation for both basic and applied research aims.
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Affiliation(s)
- Louis Berrios
- Department of Biology, Stanford University, Stanford, CA 94305, USA
- Correspondence:
| | - Jeremy D. Rentsch
- Department of Biology, Francis Marion University, Florence, SC 29502, USA;
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23
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Yu F, Goto BT, Magurno F, Błaszkowski J, Wang J, Ma W, Feng H, Liu Y. Glomus chinense and Dominikia gansuensis, two new Glomeraceae species of arbuscular mycorrhizal fungi from high altitude in the Tibetan Plateau. Mycol Prog 2022. [DOI: 10.1007/s11557-022-01799-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Markalanda SH, McFadden CJ, Cassidy ST, Wood CW. The soil microbiome increases plant survival and modifies interactions with root endosymbionts in the field. Ecol Evol 2022; 12:e8283. [PMID: 35126998 PMCID: PMC8796929 DOI: 10.1002/ece3.8283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 09/20/2021] [Accepted: 09/30/2021] [Indexed: 11/07/2022] Open
Abstract
Evidence is accumulating that the soil microbiome-the community of microorganisms living in soils-has a major effect on plant traits and fitness. However, most work to date has taken place under controlled laboratory conditions and has not experimentally disentangled the effect of the soil microbiome on plant performance from the effects of key endosymbiotic constituents. As a result, it is difficult to extrapolate from existing data to understand the role of the soil microbiome in natural plant populations. To address this gap, we performed a field experiment using the black medick Medicago lupulina to test how the soil microbiome influences plant performance and colonization by two root endosymbionts (the mutualistic nitrogen-fixing bacteria Ensifer spp. and the parasitic root-knot nematode Meloidogyne hapla) under natural conditions. We inoculated all plants with nitrogen-fixing bacteria and factorially manipulated the soil microbiome and nematode infection. We found that plants grown in microbe-depleted soil exhibit greater mortality, but that among the survivors, there was no effect of the soil microbiome on plant performance (shoot biomass, root biomass, or shoot-to-root ratio). The soil microbiome also impacted parasitic nematode infection and affected colonization by mutualistic nitrogen-fixing bacteria in a plant genotype-dependent manner, increasing colonization in some plant genotypes and decreasing it in others. Our results demonstrate the soil microbiome has complex effects on plant-endosymbiont interactions and may be critical for survival under natural conditions.
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Affiliation(s)
| | - Connor J. McFadden
- Department of Biological SciencesUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Steven T. Cassidy
- Department of Biological SciencesUniversity of PittsburghPittsburghPennsylvaniaUSA
- Present address:
Department of BiologyUniversity of FloridaGainesvilleFloridaUSA
| | - Corlett W. Wood
- Department of Biological SciencesUniversity of PittsburghPittsburghPennsylvaniaUSA
- Present address:
Department of BiologyUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
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25
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Kumar M, Giri VP, Pandey S, Gupta A, Patel MK, Bajpai AB, Jenkins S, Siddique KHM. Plant-Growth-Promoting Rhizobacteria Emerging as an Effective Bioinoculant to Improve the Growth, Production, and Stress Tolerance of Vegetable Crops. Int J Mol Sci 2021; 22:ijms222212245. [PMID: 34830124 PMCID: PMC8622033 DOI: 10.3390/ijms222212245] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 10/27/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
Vegetable cultivation is a promising economic activity, and vegetable consumption is important for human health due to the high nutritional content of vegetables. Vegetables are rich in vitamins, minerals, dietary fiber, and several phytochemical compounds. However, the production of vegetables is insufficient to meet the demand of the ever-increasing population. Plant-growth-promoting rhizobacteria (PGPR) facilitate the growth and production of vegetable crops by acquiring nutrients, producing phytohormones, and protecting them from various detrimental effects. In this review, we highlight well-developed and cutting-edge findings focusing on the role of a PGPR-based bioinoculant formulation in enhancing vegetable crop production. We also discuss the role of PGPR in promoting vegetable crop growth and resisting the adverse effects arising from various abiotic (drought, salinity, heat, heavy metals) and biotic (fungi, bacteria, nematodes, and insect pests) stresses.
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Affiliation(s)
- Manoj Kumar
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
- Correspondence: (M.K.); (K.H.M.S.)
| | - Ved Prakash Giri
- Division of Microbial Technology, CSIR-National Botanical Research Institute, Lucknow 226001, India;
| | - Shipra Pandey
- Department of Chemical Engineering, Indian Institute of Technology, Bombay 400076, India;
| | - Anmol Gupta
- Department of Biosciences, Faculty of Sciences, Integral University, Lucknow 226026, India;
| | - Manish Kumar Patel
- Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel;
| | | | - Sasha Jenkins
- The UWA Institute of Agriculture and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia;
| | - Kadambot H. M. Siddique
- The UWA Institute of Agriculture and UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia;
- Correspondence: (M.K.); (K.H.M.S.)
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Plant Tolerance to Drought Stress in the Presence of Supporting Bacteria and Fungi: An Efficient Strategy in Horticulture. HORTICULTURAE 2021. [DOI: 10.3390/horticulturae7100390] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Increasing temperature leads to intensive water evaporation, contributing to global warming and consequently leading to drought stress. These events are likely to trigger modifications in plant physiology and microbial functioning due to the altered availability of nutrients. Plants exposed to drought have developed different strategies to cope with stress by morphological, physiological, anatomical, and biochemical responses. First, visible changes influence plant biomass and consequently limit the yield of crops. The presented review was undertaken to discuss the impact of climate change with respect to drought stress and its impact on the performance of plants inoculated with plant growth-promoting microorganisms (PGPM). The main challenge for optimal performance of horticultural plants is the application of selected, beneficial microorganisms which actively support plants during drought stress. The most frequently described biochemical mechanisms for plant protection against drought by microorganisms are the production of phytohormones, antioxidants and xeroprotectants, and the induction of plant resistance. Rhizospheric or plant surface-colonizing (rhizoplane) and interior (endophytic) bacteria and fungi appear to be a suitable alternative for drought-stress management. Application of various biopreparations containing PGPM seems to provide hope for a relatively cheap, easy to apply and efficient way of alleviating drought stress in plants, with implications in productivity and food condition.
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27
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O'Brien AM, Ginnan NA, Rebolleda-Gómez M, Wagner MR. Microbial effects on plant phenology and fitness. AMERICAN JOURNAL OF BOTANY 2021; 108:1824-1837. [PMID: 34655479 DOI: 10.1002/ajb2.1743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Plant development and the timing of developmental events (phenology) are tightly coupled with plant fitness. A variety of internal and external factors determine the timing and fitness consequences of these life-history transitions. Microbes interact with plants throughout their life history and impact host phenology. This review summarizes current mechanistic and theoretical knowledge surrounding microbe-driven changes in plant phenology. Overall, there are examples of microbes impacting every phenological transition. While most studies have focused on flowering time, microbial effects remain important for host survival and fitness across all phenological phases. Microbe-mediated changes in nutrient acquisition and phytohormone signaling can release plants from stressful conditions and alter plant stress responses inducing shifts in developmental events. The frequency and direction of phenological effects appear to be partly determined by the lifestyle and the underlying nature of a plant-microbe interaction (i.e., mutualistic or pathogenic), in addition to the taxonomic group of the microbe (fungi vs. bacteria). Finally, we highlight biases, gaps in knowledge, and future directions. This biotic source of plasticity for plant adaptation will serve an important role in sustaining plant biodiversity and managing agriculture under the pressures of climate change.
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Affiliation(s)
- Anna M O'Brien
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
| | - Nichole A Ginnan
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS, USA
| | - María Rebolleda-Gómez
- Department of Ecology and Evolutionary Biology, University of California-Irvine, Irvine, CA, USA
| | - Maggie R Wagner
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS, USA
- Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, USA
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28
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Belt K, Foley RC, O'Sullivan CA, Roper MM, Singh KB, Thatcher LF. A Plant Stress-Responsive Bioreporter Coupled With Transcriptomic Analysis Allows Rapid Screening for Biocontrols of Necrotrophic Fungal Pathogens. Front Mol Biosci 2021; 8:708530. [PMID: 34540894 PMCID: PMC8446517 DOI: 10.3389/fmolb.2021.708530] [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: 05/12/2021] [Accepted: 08/09/2021] [Indexed: 11/13/2022] Open
Abstract
Streptomyces are soil-borne Actinobacteria known to produce a wide range of enzymes, phytohormones, and metabolites including antifungal compounds, making these microbes fitting for use as biocontrol agents in agriculture. In this study, a plant reporter gene construct comprising the biotic stress-responsive glutathione S-transferase promoter GSTF7 linked to a luciferase output (GSTF7:luc) was used to screen a collection of Actinobacteria candidates for manipulation of plant biotic stress responses and their potential as biocontrol agents. We identified a Streptomyces isolate (KB001) as a strong candidate and demonstrated successful protection against two necrotrophic fungal pathogens, Sclerotinia sclerotiorum and Rhizoctonia solani, but not against a bacterial pathogen (Pseudomonas syringe). Treatment of Arabidopsis plants with either KB001 microbial culture or its secreted compounds induced a range of stress and defense response-related genes like pathogenesis-related (PR) and hormone signaling pathways. Global transcriptomic analysis showed that both treatments shared highly induced expression of reactive oxygen species and auxin signaling pathways at 6 and 24 h posttreatment, while some other responses were treatment specific. This study demonstrates that GSTF7 is a suitable marker for the rapid and preliminary screening of beneficial bacteria and selection of candidates with potential for application as biocontrols in agriculture, including the Streptomyces KB001 that was characterized here, and could provide protection against necrotrophic fungal pathogens.
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Affiliation(s)
- Katharina Belt
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Floreat, WA, Australia
| | - Rhonda C Foley
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Floreat, WA, Australia
| | - Cathryn A O'Sullivan
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, St Lucia, QLD, Australia
| | - Margaret M Roper
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Floreat, WA, Australia
| | - Karam B Singh
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Floreat, WA, Australia
| | - Louise F Thatcher
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Acton, ACT, Australia
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29
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Can Bacterial Endophytes Be Used as a Promising Bio-Inoculant for the Mitigation of Salinity Stress in Crop Plants?-A Global Meta-Analysis of the Last Decade (2011-2020). Microorganisms 2021; 9:microorganisms9091861. [PMID: 34576756 PMCID: PMC8467090 DOI: 10.3390/microorganisms9091861] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 01/20/2023] Open
Abstract
Soil salinity is a major problem affecting crop production worldwide. Lately, there have been great research efforts in increasing the salt tolerance of plants through the inoculation of plant growth-promoting endophytic bacteria. However, their ability to promote plant growth under no-stress and salinity-stress conditions remains largely uncertain. Here, we carried out a global meta-analysis to quantify the plant growth-promoting effects (improvement of morphological attributes, photosynthetic capacity, antioxidative ability, and ion homeostasis) of endophytic bacteria in plants under no-stress and salinity-stress conditions. In addition, we elucidated the underlying mechanisms of growth promotion in salt-sensitive (SS) and salt-tolerant (ST) plants derived from the interaction with endophytic bacteria under no-stress and salinity-stress conditions. Specifically, this work encompassed 42 peer-reviewed articles, a total of 77 experiments, and 24 different bacterial genera. On average, endophytic bacterial inoculation increased morphological parameters. Moreover, the effect of endophytic bacteria on the total dry biomass, number of leaves, root length, shoot length, and germination rate was generally greater under salinity-stress conditions than no-stress conditions. On a physiological level, the relative better performance of the bacterial inoculants under the salinity-stress condition was associated with the increase in total chlorophyll and chlorophyll-b, as well as with the decrease of 1-aminocylopropane-1-carboxylate concentration. Moreover, under the salinity-stress condition, bacterial inoculation conferred a significantly higher increase in root K+ concentration and decrease in leaf Na+ concentration than under the no-stress condition. In SS plants, bacterial inoculation induced a higher increase in chlorophyll-b and superoxide dismutase activity, as well as a higher decrease in abscisic acid content, than in ST plants. Under salinity-stress, endophytic bacterial inoculation increased root K+ concentration in both SS and ST plants but decreased root Na+ concentration only in ST plants. Overall, this meta-analysis suggests that endophytic bacterial inoculation is beneficial under both no salinity-stress and salinity-stress conditions, but the magnitude of benefit is definitely higher under salinity-stress conditions and varies with the salt tolerance level of plants.
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Influence of Tall Fescue Epichloë Endophytes on Rhizosphere Soil Microbiome. Microorganisms 2021; 9:microorganisms9091843. [PMID: 34576739 PMCID: PMC8468716 DOI: 10.3390/microorganisms9091843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/25/2021] [Accepted: 08/28/2021] [Indexed: 01/04/2023] Open
Abstract
Tall fescue (Lolium arundinaceum (Schreb.) S.J. Darbyshire) often forms a symbiotic relationship with fungal endophytes (Epichloë coenophiala), which provides increased plant performance and greater tolerance to environmental stress compared to endophyte-free tall fescue. Whether this enhanced performance of tall fescue exclusively results from the grass–fungus symbiosis, or this symbiosis additionally results in the recruitment of soil microbes in the rhizosphere that in turn promote plant growth, remain a question. We investigated the soil bacterial and fungal community composition in iron-rich soil in the southeastern USA, and possible community shifts in soil microbial populations based on endophyte infection in tall fescue by analyzing the 16s rRNA gene and ITS specific region. Our data revealed that plant-available phosphorus (P) was significantly (p < 0.05) influenced by endophyte infection in tall fescue. While the prominent soil bacterial phyla were similar, a clear fungal community shift was observed between endophyte-infected (E+) and endophyte-free (E−) tall fescue soil at the phylum level. Moreover, compared to E− soil, E+ soil showed a greater fungal diversity at the genus level. Our results, thus, indicate a possible three-way interaction between tall fescue, fungal endophyte, and soil fungal communities resulting in improved tall fescue performance.
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31
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Martínez-Arias C, Sobrino-Plata J, Gil L, Rodríguez-Calcerrada J, Martín JA. Priming of Plant Defenses against Ophiostoma novo-ulmi by Elm ( Ulmus minor Mill.) Fungal Endophytes. J Fungi (Basel) 2021; 7:687. [PMID: 34575725 PMCID: PMC8469682 DOI: 10.3390/jof7090687] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/18/2021] [Accepted: 08/21/2021] [Indexed: 11/28/2022] Open
Abstract
Some fungal endophytes of forest trees are recognized as beneficial symbionts against stresses. In previous works, two elm endophytes from the classes Cystobasidiomycetes and Eurotiomycetes promoted host resistance to abiotic stress, and another elm endophyte from Dothideomycetes enhanced host resistance to Dutch elm disease (DED). Here, we hypothesize that the combined effect of these endophytes activate the plant immune and/or antioxidant system, leading to a defense priming and/or increased oxidative protection when exposed to the DED pathogen Ophiostoma novo-ulmi. To test this hypothesis, the short-term defense gene activation and antioxidant response were evaluated in DED-susceptible (MDV1) and DED-resistant (VAD2 and MDV2.3) Ulmus minor genotypes inoculated with O. novo-ulmi, as well as two weeks earlier with a mixture of the above-mentioned endophytes. Endophyte inoculation induced a generalized transient defense activation mediated primarily by salicylic acid (SA). Subsequent pathogen inoculation resulted in a primed defense response of variable intensity among genotypes. Genotypes MDV1 and VAD2 displayed a defense priming driven by SA, jasmonic acid (JA), and ethylene (ET), causing a reduced pathogen spread in MDV1. Meanwhile, the genotype MDV2.3 showed lower defense priming but a stronger and earlier antioxidant response. The defense priming stimulated by elm fungal endophytes broadens our current knowledge of the ecological functions of endophytic fungi in forest trees and opens new prospects for their use in the biocontrol of plant diseases.
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Affiliation(s)
- Clara Martínez-Arias
- Departamento de Sistemas y Recursos Naturales, ETSI Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (J.S.-P.); (L.G.); (J.R.-C.); (J.A.M.)
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32
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Perez L, Gundel P, García Parisi P, Moyano J, Fiorenza J, Omacini M, Nuñez M. Can seed-borne endophytes promote grass invasion by reducing host dependence on mycorrhizas? FUNGAL ECOL 2021. [DOI: 10.1016/j.funeco.2021.101077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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33
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Martorell C, MartÍnez-Blancas A, García-Meza D. Plant-soil feedbacks depend on drought stress, functional group, and evolutionary relatedness in a semiarid grassland. Ecology 2021; 102:e03499. [PMID: 34314034 DOI: 10.1002/ecy.3499] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/15/2021] [Accepted: 06/04/2021] [Indexed: 11/08/2022]
Abstract
Plant-soil feedback (PSF) occurs when plants change the biota and physicochemical properties of the soil, and these changes affect future survival or growth of plants. PSF depends on several factors such as plant functional attributes (e.g., life cycle or photosynthetic metabolism) and the environment. PSF often turn positive under dry conditions because soil biota confers drought tolerance. Conspecifics and close relatives share pathogens and consume similar resources, exerting negative PSF on each other. These ideas have mostly been tested under controlled conditions, while field studies remain scarce. To reevaluate these findings in nature, we analyzed plant-soil feedbacks over a drought-stress gradient in a phosphorus-limited semiarid grassland. We planted seedlings of 17 species in plots where community composition had been monitored for six years. To determine PSF intensity, we measured how seedling longevity was affected by previous occupancy of conspecifics and heterospecifics. The previous occupancy-survival relationship (OSR) was used as a proxy for PSF. Evidence for OSRs was found in one-third of the species pairs, with inconclusive evidence for the rest suggesting weak feedbacks. This is in line with the expectation that PSFs in the field are weaker than under controlled conditions. As expected, positive PSFs were more frequent as drought stress increased. The strongest OSRs were caused in dry plots by C4 perennial grasses, which had very positive OSRs on several C3 annual forbs, but negative effects on each other. Well-documented differences between these two functional groups may explain this result: C3 plants are more sensitive to drought, and thus may be favored by tolerance-conferring microbiota; in contrast, water-efficient C4 perennial grasses compete for phosphorus strongly, perhaps driving strong negative PSFs between them. Finally, close relatives had more negative OSRs on each other than on distant relatives as expected, although only in dry plots. This pattern was mostly due to the negative effects of closely related C4 grasses under dry conditions, and their positive effects on distantly related dicots. Our results highlight the importance of plant traits and of the environmental context in determining the direction and strength of PSFs under field conditions.
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Affiliation(s)
- Carlos Martorell
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Coyoacán, 04510, Ciudad de México, Mexico
| | - Alejandra MartÍnez-Blancas
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Coyoacán, 04510, Ciudad de México, Mexico.,Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universitaria 3000, Coyoacán, C.P. 04510, Ciudad de México, Mexico
| | - Diego García-Meza
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Coyoacán, 04510, Ciudad de México, Mexico
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34
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Zhou Y, Sommer ML, Hochholdinger F. Cold response and tolerance in cereal roots. JOURNAL OF EXPERIMENTAL BOTANY 2021:erab334. [PMID: 34270744 DOI: 10.1093/jxb/erab334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Indexed: 05/02/2023]
Abstract
Cold stress adversely affects plant growth and is a limiting factor in crop productivity. Temperature volatility as a consequence of climate change will increase the effects of cold stress on crop cultivation. Low temperatures frequently occur early after planting in temperate climates and severely affect root development in cereals. In this review we address the question how cereal root systems respond to cold on different scales. First, we summarize the morphological, physiological and cellular responses of cereal roots to cold stress and how these processes are regulated by phytohormones. Subsequently, we highlight the status of the genetic and molecular dissection of cold tolerance with emphasis on the role of cold-responsive genes in improving cold tolerance in cereal roots. Finally, we discuss the role of beneficial microorganisms and mineral nutrients in ameliorating the effects of cold stress in cereal roots. A comprehensive knowledge of the molecular mechanisms underlying cold tolerance will ensure yield stability by enabling the generation of cold-tolerant crop genotypes.
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Affiliation(s)
- Yaping Zhou
- INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, 53113 Bonn, Germany
| | - Mauritz Leonard Sommer
- INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, 53113 Bonn, Germany
| | - Frank Hochholdinger
- INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, 53113 Bonn, Germany
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35
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From the ground up: Building predictions for how climate change will affect belowground mutualisms, floral traits, and bee behavior. CLIMATE CHANGE ECOLOGY 2021. [DOI: 10.1016/j.ecochg.2021.100013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Noman M, Ahmed T, Ijaz U, Shahid M, Azizullah, Li D, Manzoor I, Song F. Plant-Microbiome Crosstalk: Dawning from Composition and Assembly of Microbial Community to Improvement of Disease Resilience in Plants. Int J Mol Sci 2021; 22:6852. [PMID: 34202205 PMCID: PMC8269294 DOI: 10.3390/ijms22136852] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 02/06/2023] Open
Abstract
Plants host diverse but taxonomically structured communities of microorganisms, called microbiome, which colonize various parts of host plants. Plant-associated microbial communities have been shown to confer multiple beneficial advantages to their host plants, such as nutrient acquisition, growth promotion, pathogen resistance, and environmental stress tolerance. Systematic studies have provided new insights into the economically and ecologically important microbial communities as hubs of core microbiota and revealed their beneficial impacts on the host plants. Microbiome engineering, which can improve the functional capabilities of native microbial species under challenging agricultural ambiance, is an emerging biotechnological strategy to improve crop yield and resilience against variety of environmental constraints of both biotic and abiotic nature. This review highlights the importance of indigenous microbial communities in improving plant health under pathogen-induced stress. Moreover, the potential solutions leading towards commercialization of proficient bioformulations for sustainable and improved crop production are also described.
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Affiliation(s)
- Muhammad Noman
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
| | - Temoor Ahmed
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
| | - Usman Ijaz
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan;
| | - Azizullah
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
| | - Dayong Li
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
| | - Irfan Manzoor
- Department of Biology, Indiana University, Bloomington, IN 47405, USA; or
| | - Fengming Song
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.N.); (T.A.); (U.I.); (A.); (D.L.)
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37
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Exploration of Epigenetics for Improvement of Drought and Other Stress Resistance in Crops: A Review. PLANTS 2021; 10:plants10061226. [PMID: 34208642 PMCID: PMC8235456 DOI: 10.3390/plants10061226] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 01/01/2023]
Abstract
Crop plants often have challenges of biotic and abiotic stresses, and they adapt sophisticated ways to acclimate and cope with these through the expression of specific genes. Changes in chromatin, histone, and DNA mostly serve the purpose of combating challenges and ensuring the survival of plants in stressful environments. Epigenetic changes, due to environmental stress, enable plants to remember a past stress event in order to deal with such challenges in the future. This heritable memory, called "plant stress memory", enables plants to respond against stresses in a better and efficient way, not only for the current plant in prevailing situations but also for future generations. Development of stress resistance in plants for increasing the yield potential and stability has always been a traditional objective of breeders for crop improvement through integrated breeding approaches. The application of epigenetics for improvements in complex traits in tetraploid and some other field crops has been unclear. An improved understanding of epigenetics and stress memory applications will contribute to the development of strategies to incorporate them into breeding for complex agronomic traits. The insight in the application of novel plant breeding techniques (NPBTs) has opened a new plethora of options among plant scientists to develop germplasms for stress tolerance. This review summarizes and discusses plant stress memory at the intergenerational and transgenerational levels, mechanisms involved in stress memory, exploitation of induced and natural epigenetic changes, and genome editing technologies with their future possible applications, in the breeding of crops for abiotic stress tolerance to increase the yield for zero hunger goals achievement on a sustainable basis in the changing climatic era.
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38
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Petipas RH, Geber MA, Lau JA. Microbe-mediated adaptation in plants. Ecol Lett 2021; 24:1302-1317. [PMID: 33913572 DOI: 10.1111/ele.13755] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/07/2021] [Accepted: 03/17/2021] [Indexed: 12/30/2022]
Abstract
Interactions with microbial symbionts have yielded great macroevolutionary innovations across the tree of life, like the origins of chloroplasts and the mitochondrial powerhouses of eukaryotic cells. There is also increasing evidence that host-associated microbiomes influence patterns of microevolutionary adaptation in plants and animals. Here we describe how microbes can facilitate adaptation in plants and how to test for and differentiate between the two main mechanisms by which microbes can produce adaptive responses in higher organisms: microbe-mediated local adaptation and microbe-mediated adaptive plasticity. Microbe-mediated local adaptation is when local plant genotypes have higher fitness than foreign genotypes because of a genotype-specific affiliation with locally beneficial microbes. Microbe-mediated adaptive plasticity occurs when local plant phenotypes, elicited by either the microbial community or the non-microbial environment, have higher fitness than foreign phenotypes as a result of interactions with locally beneficial microbes. These microbial effects on adaptation can be difficult to differentiate from traditional modes of adaptation but may be prevalent. Ignoring microbial effects may lead to erroneous conclusions about the traits and mechanisms underlying adaptation, hindering management decisions in conservation, restoration, and agriculture.
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Affiliation(s)
- Renee H Petipas
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA.,Department of Plant Pathology, Washington State University, Pullman, WA, USA
| | - Monica A Geber
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Jennifer A Lau
- Department of Biology, Indiana University, Bloomington, IN, USA.,The Environmental Resilience Institute, Indiana University, Bloomington, IN, USA
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39
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Mycorrhizal inoculation increases fruit production without disturbance of native arbuscular mycorrhizal community in jujube tree orchards (Senegal). Symbiosis 2021. [DOI: 10.1007/s13199-021-00757-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yang X, Medford JI, Markel K, Shih PM, De Paoli HC, Trinh CT, McCormick AJ, Ployet R, Hussey SG, Myburg AA, Jensen PE, Hassan MM, Zhang J, Muchero W, Kalluri UC, Yin H, Zhuo R, Abraham PE, Chen JG, Weston DJ, Yang Y, Liu D, Li Y, Labbe J, Yang B, Lee JH, Cottingham RW, Martin S, Lu M, Tschaplinski TJ, Yuan G, Lu H, Ranjan P, Mitchell JC, Wullschleger SD, Tuskan GA. Plant Biosystems Design Research Roadmap 1.0. BIODESIGN RESEARCH 2020; 2020:8051764. [PMID: 37849899 PMCID: PMC10521729 DOI: 10.34133/2020/8051764] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 10/30/2020] [Indexed: 10/19/2023] Open
Abstract
Human life intimately depends on plants for food, biomaterials, health, energy, and a sustainable environment. Various plants have been genetically improved mostly through breeding, along with limited modification via genetic engineering, yet they are still not able to meet the ever-increasing needs, in terms of both quantity and quality, resulting from the rapid increase in world population and expected standards of living. A step change that may address these challenges would be to expand the potential of plants using biosystems design approaches. This represents a shift in plant science research from relatively simple trial-and-error approaches to innovative strategies based on predictive models of biological systems. Plant biosystems design seeks to accelerate plant genetic improvement using genome editing and genetic circuit engineering or create novel plant systems through de novo synthesis of plant genomes. From this perspective, we present a comprehensive roadmap of plant biosystems design covering theories, principles, and technical methods, along with potential applications in basic and applied plant biology research. We highlight current challenges, future opportunities, and research priorities, along with a framework for international collaboration, towards rapid advancement of this emerging interdisciplinary area of research. Finally, we discuss the importance of social responsibility in utilizing plant biosystems design and suggest strategies for improving public perception, trust, and acceptance.
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Affiliation(s)
- Xiaohan Yang
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - June I. Medford
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Kasey Markel
- Department of Plant Biology, University of California, Davis, Davis, CA, USA
| | - Patrick M. Shih
- Department of Plant Biology, University of California, Davis, Davis, CA, USA
- Feedstocks Division, Joint BioEnergy Institute, Emeryville, CA, USA
| | - Henrique C. De Paoli
- Department of Biodesign, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Cong T. Trinh
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Alistair J. McCormick
- SynthSys and Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Raphael Ployet
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - Steven G. Hussey
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - Alexander A. Myburg
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - Poul Erik Jensen
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, DK-1858, Frederiksberg, Copenhagen, Denmark
| | - Md Mahmudul Hassan
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Jin Zhang
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Wellington Muchero
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Udaya C. Kalluri
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Hengfu Yin
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, China
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, China
| | - Paul E. Abraham
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Jin-Gui Chen
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - David J. Weston
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Yinong Yang
- Department of Plant Pathology and Environmental Microbiology and the Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Degao Liu
- Department of Genetics, Cell Biology and Development, Center for Precision Plant Genomics and Center for Genome Engineering, University of Minnesota, Saint Paul, MN 55108, USA
| | - Yi Li
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT 06269, USA
| | - Jessy Labbe
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Bing Yang
- Division of Plant Sciences, Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
- Donald Danforth Plant Science Center, St. Louis, MO, USA
| | - Jun Hyung Lee
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | | | - Stanton Martin
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Mengzhu Lu
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Timothy J. Tschaplinski
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Guoliang Yuan
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Haiwei Lu
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Priya Ranjan
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Julie C. Mitchell
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Stan D. Wullschleger
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Gerald A. Tuskan
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- The Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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Grunseich JM, Thompson MN, Aguirre NM, Helms AM. The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores. PLANTS (BASEL, SWITZERLAND) 2019; 9:E6. [PMID: 31861487 PMCID: PMC7020435 DOI: 10.3390/plants9010006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/11/2019] [Accepted: 12/16/2019] [Indexed: 02/05/2023]
Abstract
There is increasing evidence that plant-associated microorganisms play important roles in shaping interactions between plants and insect herbivores. Studies of both pathogenic and beneficial plant microbes have documented wide-ranging effects on herbivore behavior and performance. Some studies, for example, have reported enhanced insect-repellent traits or reduced performance of herbivores on microbe-associated plants, while others have documented increased herbivore attraction or performance. Insect herbivores frequently rely on plant cues during foraging and oviposition, suggesting that plant-associated microbes affecting these cues can indirectly influence herbivore preference. We review and synthesize recent literature to provide new insights into the ways pathogenic and beneficial plant-associated microbes alter visual, olfactory, and gustatory cues of plants that affect host-plant selection by insect herbivores. We discuss the underlying mechanisms, ecological implications, and future directions for studies of plant-microbial symbionts that indirectly influence herbivore behavior by altering plant traits.
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Affiliation(s)
- John M. Grunseich
- Department of Entomology, Texas A&M University, College Station, TX 77840, USA; (J.M.G.); (M.N.T.)
| | - Morgan N. Thompson
- Department of Entomology, Texas A&M University, College Station, TX 77840, USA; (J.M.G.); (M.N.T.)
| | - Natalie M. Aguirre
- Ecology and Evolutionary Biology Program, Texas A&M University; College Station, TX 77840, USA;
| | - Anjel M. Helms
- Department of Entomology, Texas A&M University, College Station, TX 77840, USA; (J.M.G.); (M.N.T.)
- Ecology and Evolutionary Biology Program, Texas A&M University; College Station, TX 77840, USA;
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