Omics Profiles of the Null Segregants of RNA-Directed DNA Methylation-Positive Tobacco Plants Haruka Morimoto, Yukiko Umeyama, Sayaka Hirai, Takumi Nishiuchi, Takumi Ogawa, et al. Agronomy, 2026 RNA-directed DNA methylation (RdDM), a new plant breeding technology, induces epigenetic modifications that can be inherited even after segregation of the responsible transgene. The transgene-free descendants (null segregants) are potentially exempt from the regulation of genetically modified plants. To evaluate the risks of potential unintended molecular changes in the null segregants of RdDM-positive plants, we produced null segregants (S44end2-null) from a transgenic tobacco line in which RdDM targeting the promoter of the transgene was introduced. Comprehensive multi-omics analyses, including transcriptomics, proteomics, and metabolomics, were conducted using S44end2-null and wild-type (WT) plants. Principal component analysis demonstrated clear separation of the transcriptomic and proteomic profiles of the two groups. The metabolomic profiles of S44end2-null plants exhibited considerable overlap with those of WT plants. Proteomic analysis of the null segregants of tobacco plants transformed with an empty vector demonstrated distinct cluster separation from WT plants. Because only sporadic DNA methylation on the tobacco genome was expected by the RdDM construct used in this study, the observed differences in omics profiles are considered to be significantly influenced by genetic variation accumulated during the transformation and regeneration processes (somaclonal variation). The safety assessment points for null segregants using RdDM technology are discussed.
Translocation of Insecticidal Bt Protein in Transgrafted Plants Arisa Ando, Hitomi Ohkubo, Hisae Maki, Takumi Nishiuchi, Takumi Ogawa, et al. Biotech, 2025 Transgrafting constitutes a technique involving the integration of genetically modified (GM) and non-GM plant organisms. Typically, edible components derived from non-GM scions are categorized as non-GM food products, attributed to the absence of exogenous genetic material within their respective genomes. Non-GM food status could be compromised if proteins translocated across the graft interface. We investigated the movement of insecticidal Bacillus thuringiensis (Bt) crystal proteins, widely utilized in GM crop species. Tobacco plants engineered to express the Cry1Ab gene exhibited trace levels of Cry1Ab protein accumulation. In transgrafted plants, translocated Cry1Ab protein originating from GM rootstocks was detectable within scion foliar tissues but not within the seeds obtained from the non-GM scion. This result unequivocally demonstrates the capacity for Bt protein translocation from rootstocks to scions yet indicates a constrained distribution confined to scion tissues relatively close to the graft junction. While regulatory considerations necessitate a thorough appraisal of potential risks associated with Bt proteins, the results shown here facilitate the commercialization of the edible components as non-GM food products.
Necrosis-Suppressing Effector Protein ChEC88 Adopts a Novel Structural Motif Conserved Among Genus-Spanning Hemibiotrophic Phytopathogens Shinya Ohki, Hiroyuki Takahara, Tomohiro Imamura, Kosei Sakane, Asihan Bai, et al. Plants, 2025 Phytopathogenic fungi secrete numerous effector proteins to disrupt plant defenses. At present, their sequence–structure–function relationships remain poorly understood owing to their diversity. Comprehensive understanding of conserved effectors is necessary to elucidate the molecular relationship between fungi and plants. To fill this research gap, we investigated the Colletotrichum higginsianum effector candidate (ChEC)-88 specifically expressed during infection. Notably, similar to the biotrophy-associated secreted protein 3 (BAS3) from Pyricularia oryzae, ChEC88 inhibited plant cell death caused by necrosis- and ethylene-inducing peptide 1-like protein (NLP1). Nuclear magnetic resonance analysis results revealed that ChEC88 adopted a novel pseudo two-fold symmetrical three-dimensional structure. Homology modeling suggested that BAS3 exhibited a ChEC88-like conformation despite sharing less than 50% sequence identity. Through PSI-BLAST searches, we found that ChEC88 homologs were conserved in various hemibiotrophic phytopathogenic fungi, including Colletotrichum, P. oryzae, and Fusarium species. Functional assays demonstrated that all of the representative homologs suppressed NLP1-induced plant cell death. Mutation experiments identified the residues critical for ChEC88 function. Overall, our findings suggest that hemibiotrophic phytopathogenic fungi share a conserved immune-suppression strategy mediated by ChEC88-like proteins and that such effectors possibly originated from a common ancestral lineage of phytopathogenic fungi.
A putative model of the gut-muscle axis in aged livestock K Suzuki, A Fukushima, Y Adachi, T Irie, A Sano, D Yamamoto, ... arXiv preprint arXiv:2605.19171 , 2026 2026
Paleoproteomics of pottery food residues reveals plant cupin superfamily proteins preserved for thousands of years T Nishiuchi, M Nakano, S Ohki, K Kobayashi, G Sun, J Son, S Shoda iScience 29 (5) , 2026 2026
Omics Profiles of the Null Segregants of RNA-Directed DNA Methylation-Positive Tobacco Plants. H Morimoto, Y Umeyama, S Hirai, T Nishiuchi, T Ogawa, T Mochizuki, ... Agronomy 16 (2) , 2026 2026
Protocol to pinpoint oxidized and reduced cysteine residues in brown fat using differential alkylation labeling techniques HK Oo, CM Galicia-Medina, T Nishiuchi, H Takayama, T Takamura STAR protocols 6 (4) , 2025 2025
Cysteine redoxome landscape in the liver of male mice fed a high-fat high-sucrose diet CM Galicia-Medina, HK Oo, T Nishiuchi, R Tanida, T Abuduyimiti, H Goto, ... Journal of Biological Chemistry, 110730 , 2025 2025
Vitamin D derivatives inhibit mesenchymal transition of mesothelial cells and mitigate peritoneal dissemination of ovarian cancer K Fujita, M Hayashi, M Yoshihara, S Nomura, K Kitami, E Miyamoto, ... Medical Molecular Morphology 58 (3), 171-182 , 2025 2025
Translocation of Insecticidal Bt Protein in Transgrafted Plants A Ando, H Ohkubo, H Maki, T Nishiuchi, T Ogawa, T Mochizuki, D Ohta, ... BioTech 14 (3), 64 , 2025 2025
Necrosis-Suppressing Effector Protein ChEC88 Adopts a Novel Structural Motif Conserved Among Genus-Spanning Hemibiotrophic Phytopathogens S Ohki, H Takahara, T Imamura, K Sakane, A Bai, K Sasaki, T Nishiuchi, ... Plants 14 (16), 2562 , 2025 2025 Citations: 1
Complement component C4a binds to oxytocin and modulates plasma oxytocin concentrations and social behavior in male mice Y Yamamoto, A Zhang, T Yuhi, A Harashima, AA Shabalova, E Nishizawa, ... Biochemical and biophysical research communications 771, 152004 , 2025 2025 Citations: 6
Proteomic and in silico dissection of MetaAggregates in amyotrophic lateral sclerosis brains K Murakami, THV Nguyen, N Fujita, C Nagao, K Mizuguchi, T Nishiuchi, ... bioRxiv, 2025.07. 09.663594 , 2025 2025
Mechanism of antithrombin deficiency due to the novel variant C32W in the C-terminus of the signal peptide Y Kikuchi, S Nagaya, T Togashi, Y Imai, M Togashi, Y Araiso, T Nishiuchi, ... International Journal of Hematology 122 (1), 35-44 , 2025 2025 Citations: 1
Dietary bacterial cellulose modulates gut microbiota and increases bile acid excretion in high-fat diet-induced obese mice T Nagano, AL Pambu, Y Higashimura, M Nakano, T Nishiuchi Food Hydrocolloids for Health 7, 100213 , 2025 2025 Citations: 7
High-viscosity dietary fibers modulate gut microbiota and liver metabolism to prevent obesity in high-fat diet-fed mice T Nagano, Y Higashimura, M Nakano, T Nishiuchi, AP Lelo International Journal of Biological Macromolecules 298, 139962 , 2025 2025 Citations: 24
Cysteine redoxome landscape in mouse brown adipose tissue under acute cold exposure HK Oo, CM Galicia-Medina, T Nishiuchi, R Tanida, H Goto, Y Nakano, ... Iscience 28 (3) , 2025 2025 Citations: 4
Organocatalytic asymmetric tandem reaction for the enantioselective synthesis of chiral oxindoles to construct CyK dyes L Wang, ZH Li, D Wu, RT Ge, J Zhou, YF Zhang, SY Zhang Chem Catalysis 5 (2) , 2025 2025 Citations: 8
Trideoxycytidine Diphosphate Promotes Neural Stem Cell Proliferation and Neurogenesis in Mice T Ishimoto, F Hayashi, Y Yamamoto, K Kiriyama, R Yamashita, ... The Journal of Nutrition 155 (2), 643-654 , 2025 2025
Digestibility of Natural and Recombinant Allergenic Peanut Proteins in Artificial Gastrointestinal Fluids M Terashima, R Matsuoka, T Nishiuchi, H Kodama, T Miyahara Food Safety 13 (4), 78-90 , 2025 2025
Proteomic Analysis to Understand the Promotive Effect of Ethanol on Soybean Growth Under Salt Stress Finding solutions to mitigate the impact of salinity on crops is important … S Komatsu, T Nishiuchi Biology (2079-7737) 13 (11) , 2024 2024
Proteomic Analysis to Understand the Promotive Effect of Ethanol on Soybean Growth Under Salt Stress S Komatsu, T Nishiuchi Biology 13 (11), 861 , 2024 2024 Citations: 2
Comprehensive antitumor immune response boosted by dual inhibition of SUMOylation and MEK in MYC-expressing KRAS -mutant cancers H Kotani, T Yamano, JC Boucher, S Sato, H Sakaguchi, K Fukuda, ... Experimental Hematology & Oncology 13 (1), 94 , 2024 2024 Citations: 9
MOST CITED SCHOLAR PUBLICATIONS
High-level overexpression of the Arabidopsis HsfA2 gene confers not only increased themotolerance but also salt/osmotic stress tolerance and enhanced callus … D Ogawa, K Yamaguchi, T Nishiuchi Journal of experimental botany 58 (12), 3373-3383 , 2007 2007 Citations: 397
A gene encoding a chloroplast omega-3 fatty acid desaturase complements alterations in fatty acid desaturation and chloroplast copy number of the fad7 mutant of Arabidopsis … K Iba, S Gibson, T Nishiuchi, T Fuse, M Nishimura, V Arondel, S Hugly, ... Journal of Biological Chemistry 268 (32), 24099-24105 , 1993 1993 Citations: 319
Fatty acid desaturation during chilling acclimation is one of the factors involved in conferring low-temperature tolerance to young tobacco leaves H Kodama, G Horiguchi, T Nishiuchi, M Nishimura, K Iba Plant Physiology 107 (4), 1177-1185 , 1995 1995 Citations: 246
Rapid and transient activation of transcription of the ERF3 gene by wounding in tobacco leaves: possible involvement of NtWRKYs and autorepression T Nishiuchi, H Shinshi, K Suzuki Journal of Biological Chemistry 279 (53), 55355-55361 , 2004 2004 Citations: 207
Involvement of the osmosensor histidine kinase and osmotic stress-activated protein kinases in the regulation of secondary metabolism in Fusarium graminearum N Ochiai, T Tokai, T Nishiuchi, N Takahashi-Ando, M Fujimura, M Kimura Biochemical and Biophysical Research Communications 363 (3), 639-644 , 2007 2007 Citations: 150
Wounding changes the spatial expression pattern of the arabidopsis plastid omega-3 fatty acid desaturase gene (FAD7) through different signal transduction pathways. T Nishiuchi, T Hamada, H Kodama, K Iba The Plant Cell 9 (10), 1701-1712 , 1997 1997 Citations: 145
Phytotoxic effects of trichothecenes on the growth and morphology of Arabidopsis thaliana D Masuda, M Ishida, K Yamaguchi, I Yamaguchi, M Kimura, T Nishiuchi Journal of Experimental Botany 58 (7), 1617-1626 , 2007 2007 Citations: 144
Fusarium Phytotoxin Trichothecenes Have an Elicitor-Like Activity in Arabidopsis thaliana , but the Activity Differed Significantly Among Their Molecular Species T Nishiuchi, D Masuda, H Nakashita, K Ichimura, K Shinozaki, S Yoshida, ... Molecular plant-microbe interactions 19 (5), 512-520 , 2006 2006 Citations: 126
Sphingosine-1-phosphate receptor-2 deficiency leads to inhibition of macrophage proinflammatory activities and atherosclerosis in apoE-deficient mice F Wang, Y Okamoto, I Inoki, K Yoshioka, W Du, X Qi, N Takuwa, K Gonda, ... The Journal of clinical investigation 120 (11), 3979-3995 , 2010 2010 Citations: 109
Melatonin is a potential drug for the prevention of bone loss during space flight M Ikegame, A Hattori, MJ Tabata, K Kitamura, Y Tabuchi, Y Furusawa, ... Journal of pineal research 67 (3), e12594 , 2019 2019 Citations: 107
Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune E Nazifi, N Wada, T Asano, T Nishiuchi, Y Iwamuro, S Chinaka, ... Journal of Photochemistry and Photobiology B: Biology 142, 154-168 , 2015 2015 Citations: 104
Arabidopsis ENHANCED DISEASE RESISTANCE 1 is required for pathogen‐induced expression of plant defensins in nonhost resistance, and acts through interference of … K Hiruma, T Nishiuchi, T Kato, P Bednarek, T Okuno, P Schulze‐Lefert, ... The Plant Journal 67 (6), 980-992 , 2011 2011 Citations: 103
Retinoblastoma inactivation induces a protumoral microenvironment via enhanced CCL2 secretion F Li, S Kitajima, S Kohno, A Yoshida, S Tange, S Sasaki, N Okada, ... Cancer Research 79 (15), 3903-3915 , 2019 2019 Citations: 101
Visualization of neural activity in insect brains using a conserved immediate early gene, Hr38 N Fujita, Y Nagata, T Nishiuchi, M Sato, M Iwami, T Kiya Current Biology 23 (20), 2063-2070 , 2013 2013 Citations: 98
The chloroplast genome from a lycophyte (microphyllophyte), Selaginella uncinata , has a unique inversion, transpositions and many gene losses S Tsuji, K Ueda, T Nishiyama, M Hasebe, S Yoshikawa, A Konagaya, ... Journal of plant research 120 (2), 281-290 , 2007 2007 Citations: 92
Comparative analysis of the effect of inorganic and organic chemicals with silver nanoparticles on soybean under flooding stress T Hashimoto, G Mustafa, T Nishiuchi, S Komatsu International Journal of Molecular Sciences 21 (4), 1300 , 2020 2020 Citations: 91
Transgenic rice plants expressing trichothecene 3- O -acetyltransferase show resistance to the Fusarium phytotoxin deoxynivalenol S Ohsato, T Ochiai-Fukuda, T Nishiuchi, N Takahashi-Ando, S Koizumi, ... Plant Cell Reports 26 (4), 531-538 , 2007 2007 Citations: 86
Glycosylated porphyra-334 and palythine-threonine from the terrestrial cyanobacterium Nostoc commune E Nazifi, N Wada, M Yamaba, T Asano, T Nishiuchi, S Matsugo, ... Marine Drugs 11 (9), 3124-3154 , 2013 2013 Citations: 84
Tissue-specific and light-responsive regulation of the promoter region of the Arabidopsis thaliana chloroplast ω-3 fatty acid desaturase gene ( FAD7 ) T Nishiuchi, T Nakamura, T Abe, H Kodama, M Nishimura, K Iba Plant molecular biology 29 (3), 599-609 , 1995 1995 Citations: 77
cDNA cloning of a wounding-inducible gene encoding a plastid ω-3 fatty acid desaturase from tobacco T Hamada, T Nishiuchi, H Kodama, M Nishimura, K Iba Plant and cell physiology 37 (5), 606-611 , 1996 1996 Citations: 71