1
|
Chubachi T, Oguchi T, Morita K, Hayashi N, Kikuchi A, Watanabe KN. A statistical modeling approach based on the small-scale field trial and meteorological data for preliminary prediction of the impact of low temperature on Eucalyptus globulus trees. Sci Rep 2023; 13:10138. [PMID: 37349519 PMCID: PMC10287712 DOI: 10.1038/s41598-023-37038-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 06/14/2023] [Indexed: 06/24/2023] Open
Abstract
Eucalyptus trees are important for industrial forestry plantations because of their high potential for biomass production, but their susceptibility to damage at low temperatures restricts their plantation areas. In this study, a 6-year field trial of Eucalyptus globulus was conducted in Tsukuba, Japan, which is the northernmost reach of Eucalyptus plantations, and leaf damage was quantitatively monitored over four of six winters. Leaf photosynthetic quantum yield (QY) levels, an indicator of cold stress-induced damage, fluctuated synchronously with temperature in the winters. We performed a maximum likelihood estimation of the regression model explaining leaf QY using training data subsets for the first 3 years. The resulting model explained QY by the number of days when the daily maximum temperature was below 9.5 °C over approximately the last 7 weeks as an explanatory variable. The correlation coefficient and coefficient of determination of prediction by the model between the predicted and observed values were 0.84 and 0.70, respectively. The model was then used to perform two kinds of simulations. Geographical simulations of potential Eucalyptus plantation areas using global meteorological data from more than 5,000 locations around the world successfully predicted an area that generally agreed with the global Eucalyptus plantation distribution reported previously. Another simulation based on meteorological data of the past 70 years suggested that global warming will increase the potential E. globulus plantation area in Japan approximately 1.5-fold over the next 70 years. These results suggest that the model developed herein would be applicable to preliminary predictions of E. globulus cold damage in the field.
Collapse
Affiliation(s)
- Tomoaki Chubachi
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Taichi Oguchi
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan.
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-Nodai, Tsukuba, Ibaraki, 305-8572, Japan.
| | - Kazuki Morita
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Nanami Hayashi
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Akira Kikuchi
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-Nodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Kazuo N Watanabe
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-Nodai, Tsukuba, Ibaraki, 305-8572, Japan
| |
Collapse
|
2
|
Shirokikh IG, Nasarova YI, Raldugina GN, Gulevich AA, Baranova EN. Analysis of Actinobiota in the Tobacco Rhizosphere with a Heterologous Choline Oxidase Gene from Arthrobacter globiformis. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022010137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
3
|
Transgenic poplar trees overexpressing AtGolS2, a stress-responsive galactinol synthase gene derived from Arabidopsis thaliana, improved drought tolerance in a confined field. Transgenic Res 2022; 31:579-591. [PMID: 35997870 DOI: 10.1007/s11248-022-00321-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 08/02/2022] [Indexed: 11/27/2022]
Abstract
Drought is an abiotic stress that limits plant growth and productivity, and the development of trees with improved drought tolerance is expected to expand potential plantation areas and to promote sustainable development. Previously we reported that transgenic poplars (Populus tremula × P. tremuloides, T89) harboring the stress-responsive galactinol synthase gene, AtGolS2, derived from Arabidopsis thaliana were developed and showed improved drought stress tolerance in laboratory conditions. Herein we report a field trial evaluation of the AtGolS2-transgenic poplars. The rainfall-restricted treatments on the poplars started in late May 2020, 18 months after transplanting to the field, and were performed for 100 days. During these treatments, the leaf injury levels were observed by measuring photosynthetic quantum yields twice a week. Observed leaf injury levels varied in response to soil moisture fluctuation and showed a large difference between transgenic and non-transgenic poplars during the last month. Comparison of the leaf injury levels against three stress classes clustered by the machine learning approach revealed that the transgenic poplars exhibited significant alleviation of leaf injuries in the most severe stress class. The transgenes and transcript levels were stable in the transgenic poplars cultivated in the field conditions. These results indicated that the overexpression of AtGolS2 significantly improved the drought stress tolerance of transgenic poplars not only in the laboratory but also in the field. In future studies, molecular breeding using AtGolS2 will be an effective method for developing practical drought-tolerant forest trees.
Collapse
|
4
|
Tran NHT, Oguchi T, Matsunaga E, Kawaoka A, Watanabe KN, Kikuchi A. Evaluation of potential impacts on biodiversity of the salt-tolerant transgenic Eucalyptus camaldulensis harboring an RNA chaperonic RNA-Binding-Protein gene derived from common ice plant. Transgenic Res 2021; 30:23-34. [PMID: 33475916 DOI: 10.1007/s11248-020-00227-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 12/03/2020] [Indexed: 10/22/2022]
Abstract
We recently reported that a genetic transformation of the RNA-Binding-Protein (McRBP), an RNA chaperone gene derived from common ice plant (Mesembryanthemum crystallinum), alleviated injury and loss of biomass production by salt stress in Eucalyptus camaldulensis in a semi-confined screen house trial. In this study, we assessed the potential environmental impact of the transgenic Eucalyptus in a manner complying with Japanese biosafety regulatory framework required for getting permission for experimental confined field trials. Two kinds of bioassays for the effects of allelopathic activity on the growth of other plants, i.e., the sandwich assay and the succeeding crop assay, were performed for three transgenic lines and three non-transgenic lines. No significant differences were observed between transgenic and non-transgenic plants. No significant difference in the numbers of cultivable microorganisms analyzed by the spread plate method were observed among the six transgenic and non-transgenic lines. These results suggested that there is no significant difference in the potential impact on biodiversity between the transgenic McRBP-E. camaldulensis lines and their non-transgenic comparators.
Collapse
Affiliation(s)
- Ngoc-Ha Thi Tran
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8752, Japan.,Institute of Tropical Biology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Taichi Oguchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-nodai, Tsukuba, Ibaraki, 305-8572, Japan. .,Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8752, Japan.
| | - Etsuko Matsunaga
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita Ward, Tokyo, 114-0002, Japan
| | - Akiyoshi Kawaoka
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita Ward, Tokyo, 114-0002, Japan
| | - Kazuo N Watanabe
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-nodai, Tsukuba, Ibaraki, 305-8572, Japan.,Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8752, Japan
| | - Akira Kikuchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Gene Research Center Bldg., Ten-nodai, Tsukuba, Ibaraki, 305-8572, Japan.,Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8752, Japan
| |
Collapse
|
5
|
Tran NT, Oguchi T, Akatsuka N, Matsunaga E, Kawaoka A, Yamada A, Ozeki Y, Watanabe KN, Kikuchi A. Development and evaluation of novel salt-tolerant Eucalyptus trees by molecular breeding using an RNA-Binding-Protein gene derived from common ice plant (Mesembryanthemum crystallinum L.). PLANT BIOTECHNOLOGY JOURNAL 2019; 17:801-811. [PMID: 30230168 PMCID: PMC6419579 DOI: 10.1111/pbi.13016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 09/04/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
The breeding of plantation forestry trees for the possible afforestation of marginal land would be one approach to addressing global warming issues. Here, we developed novel transgenic Eucalyptus trees (Eucalyptus camaldulensis Dehnh.) harbouring an RNA-Binding-Protein (McRBP) gene derived from a halophyte plant, common ice plant (Mesembryanthemum crystallinum L.). We conducted screened-house trials of the transgenic Eucalyptus using two different stringency salinity stress conditions to evaluate the plants' acute and chronic salt stress tolerances. Treatment with 400 mM NaCl, as the high-stringency salinity stress, resulted in soil electrical conductivity (EC) levels >20 mS/cm within 4 weeks. With the 400 mM NaCl treatment, >70% of the transgenic plants were intact, whereas >40% of the non-transgenic plants were withered. Treatment with 70 mM NaCl, as the moderate-stringency salinity stress, resulted in soil EC levels of approx. 9 mS/cm after 2 months, and these salinity levels were maintained for the next 4 months. All plants regardless of transgenic or non-transgenic status survived the 70 mM NaCl treatment, but after 6-month treatment the transgenic plants showed significantly higher growth and quantum yield of photosynthesis levels compared to the non-transgenic plants. In addition, the salt accumulation in the leaves of the transgenic plants was 30% lower than that of non-transgenic plants after 15-week moderate salt stress treatment. There results suggest that McRBP expression in the transgenic Eucalyptus enhances their salt tolerance both acutely and chronically.
Collapse
Affiliation(s)
- Ngoc‐Ha Thi Tran
- Graduate School of Life and Environmental SciencesUniversity of TsukubaTsukubaIbarakiJapan
| | - Taichi Oguchi
- Tsukuba Plant‐Innovation Research CenterUniversity of TsukubaTsukubaIbarakiJapan
- Faculty of Life and Environmental SciencesUniversity of TsukubaTsukubaIbarakiJapan
| | - Nobuhumi Akatsuka
- Department of BiotechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Etsuko Matsunaga
- Agri‐Biotechnology Research LaboratoryNippon Paper Industries Co., Ltd.TokyoJapan
| | - Akiyoshi Kawaoka
- Agri‐Biotechnology Research LaboratoryNippon Paper Industries Co., Ltd.TokyoJapan
| | - Akiyo Yamada
- Department of BiotechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Yoshihiro Ozeki
- Department of BiotechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Kazuo N. Watanabe
- Tsukuba Plant‐Innovation Research CenterUniversity of TsukubaTsukubaIbarakiJapan
- Faculty of Life and Environmental SciencesUniversity of TsukubaTsukubaIbarakiJapan
| | - Akira Kikuchi
- Tsukuba Plant‐Innovation Research CenterUniversity of TsukubaTsukubaIbarakiJapan
- Faculty of Life and Environmental SciencesUniversity of TsukubaTsukubaIbarakiJapan
| |
Collapse
|
6
|
Tran NHT, Oguchi T, Matsunaga E, Kawaoka A, Watanabe KN, Kikuchi A. Environmental risk assessment of impacts of transgenic Eucalyptus camaldulensis events highly expressing bacterial Choline Oxidase A gene. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2018; 35:393-397. [PMID: 31892828 PMCID: PMC6905223 DOI: 10.5511/plantbiotechnology.18.0831a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 08/31/2018] [Indexed: 06/10/2023]
Abstract
Under the Japanese biosafety regulatory framework for transgenic plants, data for assessing a transgenic plant's impact on biodiversity must be submitted in order to obtain approval for a confined field trial. We recently reported the development of four novel transgenic Eucalyptus camaldulensis clones expressing the bacterial choline oxidase A (codA) gene, i.e., codAH-1, codAH-2, codAN-1, and codAN-2, and evaluated their abiotic tolerance by semiconfined screen house trial cultivation. Here we evaluated the impacts of the transgenic E. camaldulensis clones on productivities of harmful substances from those clones to affect soil microorganisms and/or other plants in the environment. A comparison of the assessment data between the transgenic trees and non-transgenic comparators showed no significant difference in potential impacts on biodiversity. The results contribute to sound-science evidence ensuring substantial equivalence between transgenic and non-transgenic E. camaldulensis.
Collapse
Affiliation(s)
- Ngoc-Ha Thi Tran
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Taichi Oguchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Etsuko Matsunaga
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita-ku, Tokyo 114-0002, Japan
| | - Akiyoshi Kawaoka
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita-ku, Tokyo 114-0002, Japan
| | - Kazuo N. Watanabe
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Akira Kikuchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| |
Collapse
|
7
|
Tran NHT, Oguchi T, Matsunaga E, Kawaoka A, Watanabe KN, Kikuchi A. Transcriptional enhancement of a bacterial choline oxidase A gene by an HSP terminator improves the glycine betaine production and salinity stress tolerance of Eucalyptus camaldulensis trees. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2018; 35:215-224. [PMID: 31819726 PMCID: PMC6879367 DOI: 10.5511/plantbiotechnology.18.0510b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/10/2018] [Indexed: 06/08/2023]
Abstract
Novel transgenic Eucalyptus camaldulensis trees expressing the bacterial choline oxidase A (codA) gene by the Cauliflower mosaic virus (CaMV) 35S promoter and the Arabidopsis thaliana heat shock protein (HSP) terminator was developed. To evaluate the codA transcription level and the metabolic products and abiotic stress tolerance of the transgenic trees, a six-month semi-confined screen house cultivation trial was conducted under a moderate-stringency salt-stress condition. The transcription level of the CaMV 35S promoter driven-codA was more than fourfold higher, and the content of glycine betaine, the metabolic product of codA, was twofold higher, with the HSP terminator than with the nopaline synthase (NOS) terminator. Moreover, the screen house cultivation revealed that the growth of transgenic trees under the salt stress condition was alleviated in correlation with the glycine betaine concentration. These results suggest that the enhancement of codA transcription by the HSP terminator increased the abiotic stress tolerance of Eucalyptus plantation trees.
Collapse
Affiliation(s)
- Ngoc-Ha Thi Tran
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Taichi Oguchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Etsuko Matsunaga
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita Ward, Tokyo 114-0002, Japan
| | - Akiyoshi Kawaoka
- Agri-Biotechnology Research Laboratory, Nippon Paper Industries Co., Ltd., 5-21-1 Oji, Kita Ward, Tokyo 114-0002, Japan
| | - Kazuo N. Watanabe
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| | - Akira Kikuchi
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8752, Japan
| |
Collapse
|
8
|
Khan MS, Khan MA, Ahmad D. Assessing Utilization and Environmental Risks of Important Genes in Plant Abiotic Stress Tolerance. FRONTIERS IN PLANT SCIENCE 2016; 7:792. [PMID: 27446095 PMCID: PMC4919908 DOI: 10.3389/fpls.2016.00792] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/22/2016] [Indexed: 05/22/2023]
Abstract
Transgenic plants with improved salt and drought stress tolerance have been developed with a large number of abiotic stress-related genes. Among these, the most extensively used genes are the glycine betaine biosynthetic codA, the DREB transcription factors, and vacuolar membrane Na(+)/H(+) antiporters. The use of codA, DREBs, and Na(+)/H(+) antiporters in transgenic plants has conferred stress tolerance and improved plant phenotype. However, the future deployment and commercialization of these plants depend on their safety to the environment. Addressing environmental risk assessment is challenging since mechanisms governing abiotic stress tolerance are much more complex than that of insect resistance and herbicide tolerance traits, which have been considered to date. Therefore, questions arise, whether abiotic stress tolerance genes need additional considerations and new measurements in risk assessment and, whether these genes would have effects on weediness and invasiveness potential of transgenic plants? While considering these concerns, the environmental risk assessment of abiotic stress tolerance genes would need to focus on the magnitude of stress tolerance, plant phenotype and characteristics of the potential receiving environment. In the present review, we discuss environmental concerns and likelihood of concerns associated with the use of abiotic stress tolerance genes. Based on our analysis, we conclude that the uses of these genes in domesticated crop plants are safe for the environment. Risk assessment, however, should be carefully conducted on biofeedstocks and perennial plants taking into account plant phenotype and the potential receiving environment.
Collapse
Affiliation(s)
- Mohammad S. Khan
- Faculty of Crop Production Sciences, Institute of Biotechnology and Genetic Engineering, The University of Agriculture, PeshawarPakistan
| | - Muhammad A. Khan
- Research School of Biology, ANU College of Medicine, Biology and Environment, The Australian National University, Canberra, ACTAustralia
| | - Dawood Ahmad
- Faculty of Crop Production Sciences, Institute of Biotechnology and Genetic Engineering, The University of Agriculture, PeshawarPakistan
| |
Collapse
|