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Mao Y, Hong K, Li L, Nam IK, Kim SH, Choe SK. Mitochondrial Fission Is Involved in Heat Resistance in Zebrafish. Zebrafish 2024; 21:320-328. [PMID: 39007173 DOI: 10.1089/zeb.2024.0128] [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] [Indexed: 07/16/2024] Open
Abstract
Global warming and extreme weather events pose a significant threat to global biodiversity, with rising water temperatures exerting a profound influence on fish conservation and fishery development. In this study, we used zebrafish as a model organism to explore the impact of a heat acclimation period on their survival rates. The results demonstrated that a 2-month heat acclimation period almost completely mitigated heat stress-induced mortality in zebrafish. Subsequent analysis of the surviving zebrafish revealed a predominance of hepatic mitochondria in a fission state. Remarkably, a short-term fasting regimen, which induced hepatic mitochondrial fission, mirrored the outcomes of the protective effect of heat acclimation and augmented animal survival under heat stress. Conversely, treatment with a mitochondrial fission inhibitor within the fasting group attenuated the elevated survival rate. Furthermore, zebrafish embryos subjected to brief heat acclimation also exhibited increased heat resistance, a trait diminished by a chemical intervention inhibiting mitochondrial fission. This suggests a shared mechanism for heat resistance between embryos and adult zebrafish. These findings underscore the potential use of inducing mitochondrial fission to enhance heat resistance in zebrafish, offering promise for fish biodiversity conservation in the face of global warming.
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Affiliation(s)
- Yousheng Mao
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
| | - KwangHeum Hong
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Li Li
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
| | - In-Koo Nam
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Seok-Hyung Kim
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
| | - Seong-Kyu Choe
- Department of Medicine, Graduate School, Wonkwang University, Iksan, Republic of Korea
- Sarcopenia Total Solution Center, Wonkwang University, Iksan, Republic of Korea
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Republic of Korea
- Institute of Wonkwang Medical Science, Wonkwang University, Iksan, Republic of Korea
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Murakoshi Y, Saso Y, Matsumoto M, Yamanaka K, Yotsui I, Sakata Y, Taji T. CAD1 contributes to osmotic tolerance in Arabidopsis thaliana by suppressing immune responses under osmotic stress. Biochem Biophys Res Commun 2024; 717:150049. [PMID: 38714014 DOI: 10.1016/j.bbrc.2024.150049] [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: 04/30/2024] [Accepted: 05/01/2024] [Indexed: 05/09/2024]
Abstract
Acquired osmotolerance induced by initial exposure to mild salt stress is widespread across Arabidopsis thaliana ecotypes, but the mechanism underlying it remains poorly understood. To clarify it, we isolated acquired osmotolerance-deficient 1 (aod1), a mutant highly sensitive to osmotic stress, from ion-beam-irradiated seeds of Zu-0, an ecotype known for its remarkably high osmotolerance. Aod1 showed growth inhibition with spotted necrotic lesions on the rosette leaves under normal growth conditions on soil. However, its tolerance to salt and oxidative stresses was similar to that of the wild type (WT). Genetic and genome sequencing analyses suggested that the gene causing aod1 is identical to CONSTITUTIVELY ACTIVATED CELL DEATH 1 (CAD1). Complementation with the WT CAD1 gene restored the growth and osmotolerance of aod1, indicating that mutated CAD1 is responsible for the observed phenotypes in aod1. Although CAD1 is known to act as a negative regulator of immune response, transcript levels in the WT increased in response to osmotic stress. Aod1 displayed enhanced immune response and cell death under normal growth conditions, whereas the expression profiles of osmotic response genes were comparable to those of the WT. These findings suggest that autoimmunity in aod1 is detrimental to osmotolerance. Overall, our results suggest that CAD1 negatively regulates immune responses under osmotic stress, contributing to osmotolerance in Arabidopsis.
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Affiliation(s)
- Yusuke Murakoshi
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Yasutaka Saso
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Minamo Matsumoto
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Kazuha Yamanaka
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Izumi Yotsui
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Teruaki Taji
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan.
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Réthoré E, Pelletier S, Balliau T, Zivy M, Avelange-Macherel MH, Macherel D. Multi-scale analysis of heat stress acclimation in Arabidopsis seedlings highlights the primordial contribution of energy-transducing organelles. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:300-331. [PMID: 38613336 DOI: 10.1111/tpj.16763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 04/14/2024]
Abstract
Much progress has been made in understanding the molecular mechanisms of plant adaptation to heat stress. However, the great diversity of models and stress conditions, and the fact that analyses are often limited to a small number of approaches, complicate the picture. We took advantage of a liquid culture system in which Arabidopsis seedlings are arrested in their development, thus avoiding interference with development and drought stress responses, to investigate through an integrative approach seedlings' global response to heat stress and acclimation. Seedlings perfectly tolerate a noxious heat shock (43°C) when subjected to a heat priming treatment at a lower temperature (38°C) the day before, displaying a thermotolerance comparable to that previously observed for Arabidopsis. A major effect of the pre-treatment was to partially protect energy metabolism under heat shock and favor its subsequent rapid recovery, which was correlated with the survival of seedlings. Rapid recovery of actin cytoskeleton and mitochondrial dynamics were another landmark of heat shock tolerance. The omics confirmed the role of the ubiquitous heat shock response actors but also revealed specific or overlapping responses to priming, heat shock, and their combination. Since only a few components or functions of chloroplast and mitochondria were highlighted in these analyses, the preservation and rapid recovery of their bioenergetic roles upon acute heat stress do not require extensive remodeling of the organelles. Protection of these organelles is rather integrated into the overall heat shock response, thus allowing them to provide the energy required to elaborate other cellular responses toward acclimation.
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Affiliation(s)
- Elise Réthoré
- Univ Angers, Institut Agro Rennes-Angers, INRAE, IRHS-UMR 1345, F-49000, Angers, France
| | - Sandra Pelletier
- Univ Angers, Institut Agro Rennes-Angers, INRAE, IRHS-UMR 1345, F-49000, Angers, France
| | - Thierry Balliau
- INRAE, PAPPSO, UMR/UMR Génétique Végétale, Gif sur Yvette, France
| | - Michel Zivy
- INRAE, PAPPSO, UMR/UMR Génétique Végétale, Gif sur Yvette, France
| | | | - David Macherel
- Univ Angers, Institut Agro Rennes-Angers, INRAE, IRHS-UMR 1345, F-49000, Angers, France
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Zheng X, Duan Y, Zheng H, Tang H, Zheng L, Yu X. Genome-Wide Identification and Characterization of the RWP-RK Proteins in Zanthoxylum armatum. Genes (Basel) 2024; 15:665. [PMID: 38927601 PMCID: PMC11202622 DOI: 10.3390/genes15060665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/13/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024] Open
Abstract
Apomixis is a common reproductive characteristic of Zanthoxylum plants, and RWP-RKs are plant-specific transcription factors known to regulate embryonic development. However, the genome-wide analysis and function prediction of RWP-RK family genes in Z. armatum are unclear. In this study, 36 ZaRWP-RK transcription factors were identified in the genome of Z. armatum, among which 15 genes belonged to the RKD subfamily and 21 belonged to the NLP subfamily. Duplication events of ZaRWP-RK genes were mainly segmental duplication, and synteny analysis revealed a close phylogenetic relationship between Z. armatum and Arabidopsis. The analysis of cis-elements indicated that ZaRWP-RK genes may be involved in the regulation of the embryonic development of Z. armatum by responding to plant hormones such as abscisic acid, auxin, and gibberellin. Results of a real-time PCR showed that the expression levels of most ZaRWP-RK genes were significantly increased from flowers to young fruits. Protein-protein interaction network analysis further revealed the potential roles of the ZaRWP-RK proteins in apomixis. Collectively, this study is expected to improve our understanding of ZaRWP-RK transcription factors and provide a theoretical basis for future investigations into the ZaRWP-RK genes and their regulatory mechanisms in the apomixis process of Z. armatum.
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Affiliation(s)
| | | | | | | | | | - Xiaobo Yu
- Southwest Research Center for Cross Breeding of Special Economic Plants, School of Life Science, Leshan Normal University, Leshan 614000, China; (X.Z.); (Y.D.); (H.Z.); (H.T.); (L.Z.)
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Mori K, Murakoshi Y, Tamura M, Kunitake S, Nishimura K, Ariga H, Tanaka K, Iuchi S, Yotsui I, Sakata Y, Taji T. Mutations in nuclear pore complex promote osmotolerance in Arabidopsis by suppressing the nuclear translocation of ACQOS and its osmotically induced immunity. FRONTIERS IN PLANT SCIENCE 2024; 15:1304366. [PMID: 38318497 PMCID: PMC10839096 DOI: 10.3389/fpls.2024.1304366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/02/2024] [Indexed: 02/07/2024]
Abstract
We have previously reported a wide variation in salt tolerance among Arabidopsis thaliana accessions and identified ACQOS, encoding a nucleotide-binding leucine-rich repeat (NLR) protein, as the causal gene responsible for the disturbance of acquired osmotolerance induced after mild salt stress. ACQOS is conserved among Arabidopsis osmosensitive accessions, including Col-0. In response to osmotic stress, it induces detrimental autoimmunity, resulting in suppression of osmotolerance, but how ACQOS triggers autoimmunity remains unclear. Here, we screened acquired osmotolerance (aot) mutants from EMS-mutagenized Col-0 seeds and isolated the aot19 mutant. In comparison with the wild type (WT), this mutant had acquired osmotolerance and decreased expression levels of pathogenesis-related genes. It had a mutation in a splicing acceptor site in NUCLEOPORIN 85 (NUP85), which encodes a component of the nuclear pore complex. A mutant with a T-DNA insertion in NUP85 acquired osmotolerance similar to aot19. The WT gene complemented the osmotolerant phenotype of aot19. We evaluated the acquired osmotolerance of five nup mutants of outer-ring NUPs and found that nup96, nup107, and aot19/nup85, but not nup43 or nup133, showed acquired osmotolerance. We examined the subcellular localization of the GFP-ACQOS protein and found that its nuclear translocation in response to osmotic stress was suppressed in aot19. We suggest that NUP85 is essential for the nuclear translocation of ACQOS, and the loss-of-function mutation of NUP85 results in acquired osmotolerance by suppressing ACQOS-induced autoimmunity in response to osmotic stress.
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Affiliation(s)
- Kento Mori
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yusuke Murakoshi
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Masashi Tamura
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Satoru Kunitake
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Kohji Nishimura
- Department of Life Sciences, Faculty of Life and Environmental Sciences, Shimane University, Matsue, Japan
| | - Hirotaka Ariga
- Department of Plant Sciences, Institute of Agrobiological Science, NARO, Tsukuba, Ibaraki, Japan
| | - Keisuke Tanaka
- Nodai Genome Center, Tokyo University of Agriculture, Tokyo, Japan
| | - Satoshi Iuchi
- RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Izumi Yotsui
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Teruaki Taji
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
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Endo N, Tsukimoto R, Isono K, Hosoi A, Yamaguchi R, Tanaka K, Iuchi S, Yotsui I, Sakata Y, Taji T. MOS4-associated complex contributes to proper splicing and suppression of ER stress under long-term heat stress in Arabidopsis. PNAS NEXUS 2023; 2:pgad329. [PMID: 38024402 PMCID: PMC10644990 DOI: 10.1093/pnasnexus/pgad329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023]
Abstract
Plants are often exposed not only to short-term (S-) but also to long-term (L-)heat stress over several consecutive days. A few Arabidopsis mutants defective in L-heat tolerance have been identified, but the molecular mechanisms are less understood for this tolerance than for S-heat stress tolerance. To elucidate the mechanisms of the former, we used a forward genetic screen for sensitive to long-term heat (sloh) mutants and isolated sloh3 and sloh63. The mutants were hypersensitive to L- but not to S-heat stress, and sloh63 was also hypersensitive to salt stress. We identified the causal genes, SLOH3 and SLOH63, both of which encoded splicing-related components of the MOS4-associated complex (MAC). This complex is widely conserved in eukaryotes and has been suggested to interact with spliceosomes. Both genes were induced by L-heat stress in a time-dependent manner, and some abnormal splicing events were observed in both mutants under L-heat stress. In addition, endoplasmic reticulum (ER) stress and subsequent unfolded protein response occurred in both mutants under L-heat stress and were especially prominent in sloh63, suggesting that enhanced ER stress is due to the salt hypersensitivity of sloh63. Splicing inhibitor pladienolide B led to concentration-dependent disturbance of splicing, decreased L-heat tolerance, and enhanced ER stress. These findings suggest that maintenance of precise mRNA splicing under L-heat stress by the MAC is important for L-heat tolerance and suppressing ER stress in Arabidopsis.
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Affiliation(s)
- Naoya Endo
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Ryo Tsukimoto
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Kazuho Isono
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Akito Hosoi
- NODAI Genome Research Center, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Ryo Yamaguchi
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Keisuke Tanaka
- NODAI Genome Research Center, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Satoshi Iuchi
- RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - Izumi Yotsui
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
| | - Teruaki Taji
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
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Isono K, Nakamura K, Hanada K, Shirai K, Ueki M, Tanaka K, Tsuchimatsu T, Iuchi S, Kobayashi M, Yotsui I, Sakata Y, Taji T. LHT1/MAC7 contributes to proper alternative splicing under long-term heat stress and mediates variation in the heat tolerance of Arabidopsis. PNAS NEXUS 2023; 2:pgad348. [PMID: 38024403 PMCID: PMC10644991 DOI: 10.1093/pnasnexus/pgad348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023]
Abstract
Natural genetic variation has facilitated the identification of genes underlying complex traits such as stress tolerances. We here evaluated the long-term (L-) heat tolerance (37°C for 5 days) of 174 Arabidopsis thaliana accessions and short-term (S-) heat tolerance (42°C, 50 min) of 88 accessions and found extensive variation, respectively. Interestingly, L-heat-tolerant accessions are not necessarily S-heat tolerant, suggesting that the tolerance mechanisms are different. To elucidate the mechanisms underlying the variation, we performed a chromosomal mapping using the F2 progeny of a cross between Ms-0 (a hypersensitive accession) and Col-0 (a tolerant accession) and found a single locus responsible for the difference in L-heat tolerance between them, which we named Long-term Heat Tolerance 1 (LHT1). LHT1 is identical to MAC7, which encodes a putative RNA helicase involved in mRNA splicing as a component of the MOS4 complex. We found one amino acid deletion in LHT1 of Ms-0 that causes a loss of function. Arabidopsis mutants of other core components of the MOS4 complex-mos4-2, cdc5-1, mac3a mac3b, and prl1 prl2-also showed hypersensitivity to L-heat stress, suggesting that the MOS4 complex plays an important role in L-heat stress responses. L-heat stress induced mRNA processing-related genes and compromised alternative splicing. Loss of LHT1 function caused genome-wide detrimental splicing events, which are thought to produce nonfunctional mRNAs that include retained introns under L-heat stress. These findings suggest that maintaining proper alternative splicing under L-heat stress is important in the heat tolerance of A. thaliana.
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Affiliation(s)
- Kazuho Isono
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Kotaro Nakamura
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Kousuke Hanada
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
| | - Kazumasa Shirai
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
| | - Mao Ueki
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Keisuke Tanaka
- NODAI Genome Center, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Takashi Tsuchimatsu
- Department of Biological Sciences, University of Tokyo, Tokyo 113-0033, Japan
| | - Satoshi Iuchi
- RIKEN BioResource Research Center, Tsukuba, Ibaraki 305-0074, Japan
| | | | - Izumi Yotsui
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Teruaki Taji
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
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Fukuda N, Oshima Y, Ariga H, Kajino T, Koyama T, Yaguchi Y, Tanaka K, Yotsui I, Sakata Y, Taji T. ECERIFERUM 10 Encoding an Enoyl-CoA Reductase Plays a Crucial Role in Osmotolerance and Cuticular Wax Loading in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:898317. [PMID: 35812913 PMCID: PMC9259793 DOI: 10.3389/fpls.2022.898317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/30/2022] [Indexed: 05/21/2023]
Abstract
Acquired osmotolerance induced after salt stress is widespread across Arabidopsis thaliana (Arabidopsis) accessions (e.g., Bu-5). However, it remains unclear how this osmotolerance is established. Here, we isolated a mutant showing an acquired osmotolerance-defective phenotype (aod2) from an ion-beam-mutagenized M2 population of Bu-5. aod2 was impaired not only in acquired osmotolerance but also in osmo-shock, salt-shock, and long-term heat tolerances compared with Bu-5, and it displayed abnormal morphology, including small, wrinkled leaves, and zigzag-shaped stems. Genetic analyses of aod2 revealed that a 439-kbp region of chromosome 4 was translocated to chromosome 3 at the causal locus for the osmosensitive phenotype. The causal gene of the aod2 phenotype was identical to ECERIFERUM 10 (CER10), which encodes an enoyl-coenzyme A reductase that is involved in the elongation reactions of very-long-chain fatty acids (VLCFAs) for subsequent derivatization into cuticular waxes, storage lipids, and sphingolipids. The major components of the cuticular wax were accumulated in response to osmotic stress in both Bu-5 WT and aod2. However, less fatty acids, primary alcohols, and aldehydes with chain length ≥ C30 were accumulated in aod2. In addition, aod2 exhibited a dramatic reduction in the number of epicuticular wax crystals on its stems. Endoplasmic reticulum stress mediated by bZIP60 was increased in aod2 under osmotic stress. The only cer10 showed the most pronounced loss of epidermal cuticular wax and most osmosensitive phenotype among four Col-0-background cuticular wax-related mutants. Together, the present findings suggest that CER10/AOD2 plays a crucial role in Arabidopsis osmotolerance through VLCFA metabolism involved in cuticular wax formation and endocytic membrane trafficking.
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Affiliation(s)
- Norika Fukuda
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yoshimi Oshima
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Hirotaka Ariga
- Plant Resources Unit, Research Center of Genetic Resources, NARO, Ibaraki, Japan
| | - Takuma Kajino
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Takashi Koyama
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yukio Yaguchi
- Electron Microscope Center, Tokyo University of Agriculture, Tokyo, Japan
| | - Keisuke Tanaka
- Nodai Genome Center, Tokyo University of Agriculture, Tokyo, Japan
| | - Izumi Yotsui
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yoichi Sakata
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Teruaki Taji
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
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