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Karlsen-Ayala E, Jusino MA, Gazis R, Smith ME. Habitat matters: The role of spore bank fungi in early seedling establishment of Florida slash pines. FUNGAL ECOL 2023. [DOI: 10.1016/j.funeco.2022.101210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Shi Y, Yan T, Yuan C, Li C, Rensing C, Chen Y, Xie R, Zhang T, Lian C. Comparative Physiological and Transcriptome Analysis Provide Insights into the Response of Cenococcum geophilum, an Ectomycorrhizal Fungus to Cadmium Stress. J Fungi (Basel) 2022; 8:jof8070724. [PMID: 35887479 PMCID: PMC9323960 DOI: 10.3390/jof8070724] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 02/07/2023] Open
Abstract
Cadmium (Cd) displays strong toxicity, high mobility, and cannot be degraded, which poses a serious threat to the environment. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi (ECMF) in the natural environment. In this study, three Cd sensitive and three Cd tolerant strains of C. geophilum were used to analyze the physiological and molecular responses to Cd exposure. The results showed that Cd inhibited the growth of all strains of C. geophilum but had a less toxic effect on the tolerant strains, which may be correlated to a lower content of Cd and higher activity of antioxidant enzymes in the mycelia of tolerant strains. Comparative transcriptomic analysis was used to identify differentially expressed genes (DEGs) of four selected C. geophilum strains after 2 mg/L Cd treatment. The results showed that the defense response of C. geophilum strain to Cd may be closely related to the differential expression of functional genes involved in cell membrane ion transport, macromolecular compound metabolism, and redox pathways. The results were further confirmed by RT-qPCR analysis. Collectively, this study provides useful information for elucidation of the Cd tolerance mechanism of ECMF.
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Affiliation(s)
- Yuyu Shi
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.S.); (T.Y.); (C.Y.)
| | - Tianyi Yan
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.S.); (T.Y.); (C.Y.)
| | - Chao Yuan
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.S.); (T.Y.); (C.Y.)
| | - Chaofeng Li
- Asian Research Center for Bioresource and Environmental Sciences, School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo, Tokyo 188-0002, Japan; (C.L.); (C.L.)
| | - Christopher Rensing
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;
| | - Rongzhang Xie
- Forestry Bureau, Sanyuan District, Sanming 365000, China;
| | - Taoxiang Zhang
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.S.); (T.Y.); (C.Y.)
- Correspondence: ; Tel.: +86-180-0691-1945
| | - Chunlan Lian
- Asian Research Center for Bioresource and Environmental Sciences, School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo, Tokyo 188-0002, Japan; (C.L.); (C.L.)
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Karatassiou M, Giannakoula A, Tsitos D, Stefanou S. Response of Three Greek Populations of Aegilops triuncialis (Crop Wild Relative) to Serpentine Soil. PLANTS (BASEL, SWITZERLAND) 2021; 10:516. [PMID: 33801916 PMCID: PMC8001976 DOI: 10.3390/plants10030516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/06/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
A common garden experiment was established to investigate the effects of serpentine soil on the photosynthetic and biochemical traits of plants from three Greek populations of Aegilops triuncialis. We measured photosynthetic and chlorophyll fluorescence parameters, proline content, and nutrient uptake of the above plants growing in serpentine and non-serpentine soil. The photochemical activity of PSII was inhibited in plants growing in the serpentine soil regardless of the population; however, this inhibition was lower in the Aetolia-Acarnania population. The uptake and the allocation of Ni, as well as that of some other essential nutrient elements (Ca, Mg, Fe, Mn), to upper parts were decreased with the lower decrease recorded in the Aetolia-Acarnania population. Our results showed that excess Ni significantly increased the synthesis of proline, an antioxidant compound that plays an important role in the protection against oxidative stress. We conclude that the reduction in the photosynthetic performance is most probably due to reduced nutrient supply to the upper plant parts. Moreover, nickel accumulation in the roots recorded in plants from all three populations seems to be a mechanism to alleviate the detrimental effects of the serpentine soil stress. In addition, our data suggest that the population from Aetolia-Acarnania could be categorized among the nickel excluders.
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Affiliation(s)
- Maria Karatassiou
- Laboratory of Rangeland Ecology (PO 286), School of Forestry and Natural Environment, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece;
| | - Anastasia Giannakoula
- Laboratory of Plant Physiology, Department of Agriculture, International Hellenic University, 54700 Sindos, Greece;
| | - Dimitrios Tsitos
- Laboratory of Rangeland Ecology (PO 286), School of Forestry and Natural Environment, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece;
| | - Stefanos Stefanou
- Laboratory of Soil Science, Department of Agriculture, International Hellenic University, 54700 Sindos, Greece;
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Obase K, Douhan GW, Matsuda Y, Smith ME. Isolation source matters: sclerotia and ectomycorrhizal roots provide different views of genetic diversity in Cenococcum geophilum. Mycologia 2018; 110:473-481. [PMID: 29923792 DOI: 10.1080/00275514.2018.1463130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cenococcum geophilum forms sclerotia and ectomycorrhizas with host plants in forest soils. We demonstrated the differences in genetic diversity of C. geophilum between cultured isolates from sclerotia and those from ectomycorrhizal roots in the same 73 soil samples based on glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene sequences and newly developed microsatellite markers. Based on GAPDH sequences, 759 cultured isolates (553 from sclerotia and 206 from ectomycorrhizas) were classified into 107 "genotypes" with sequence variation of up to 8.6%. The total number of GAPDH genotypes per soil sample ranged from 1 to 9, but genotypes that were shared between sclerotia and ectomycorrhizas were uncommon (0-3 per soil sample). More than 50% of GAPDH genotypes were unique to one source in most soil samples. Unique GAPDH genotypes were detected from either scleotia or ectomycorrhizal roots in most of the soil samples. Multilocus analysis using nine microsatellite markers provided additional resolution to differentiate fungal individuals and supported the results of GAPDH genotyping. The results indicated that sampling both sclerotia and ectomycorrhizal roots maximizes the detection of diversity at the soil core scale. On the other hand, when all isolates were viewed together, 82 GAPDH genotypes were unique to sclerotia whereas only 6 GAPDH genotypes were unique to ectomycorrhizas. Rarefaction analysis indicated that GAPDH genotypic diversity is significantly higher in sclerotia than ectomycorrhizal roots and the diversity within sclerotia is nearly the same as that of both sclerotia and ectomycorrhizas together. These findings suggest that sampling sclerotia alone is likely to detect the majority of GAPDH genotypes in Cenococcum at the regional scale. When deciding whether to sample sclerotia, ectomycorrhizas, or both types of tissues from Cenococcum, it is critical to consider the spatial scale and also the main questions and hypotheses of the study.
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Affiliation(s)
- Keisuke Obase
- a Microbial Ecology Laboratory, Department of Mushroom Science and Forest Microbiology , Forestry and Forest Products Research Institute , 1 Matsunosato, Tsukuba , Ibaraki 305-8687 , Japan.,b Department of Plant Pathology , University of Florida , 2523 Fifield Hall, Gainesville , Florida 32611-0680
| | - Greg W Douhan
- c Department of Plant Pathology and Microbiology , University of California , Riverside , California 92521.,d Cooperative Extension, Tulare County , University of California , Tulare , California 93274
| | - Yosuke Matsuda
- e Laboratory of Forest Mycology, Graduate School of Bioresources , Mie University , Kurimamachiya 1577, Tsu , Mie 514-8507 , Japan
| | - Matthew E Smith
- b Department of Plant Pathology , University of Florida , 2523 Fifield Hall, Gainesville , Florida 32611-0680
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Matsuda Y, Hayakawa N, Ito S. Local and microscale distributions of Cenococcum geophilum in soils of coastal pine forests. FUNGAL ECOL 2009. [DOI: 10.1016/j.funeco.2008.10.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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