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12. Role of host nutrition in symbiont regulation: Impact of dietary nitrogen on proliferation of obligate and facultative bacterial endosymbionts of the pea aphid Acyrthosiphon pisum

Author

Wilkinson, T.L., Koga, R., and Fukatsu, T.

Subjects
Pea aphid -- Physiological aspects, Pea aphid -- Research, Host-bacteria relationships -- Research, Gram-negative bacteria -- Physiological aspects, Gram-negative bacteria -- Research, Polymerase chain reaction -- Analysis, Biological sciences
Abstract

A study was conducted to investigate the impact of host nutrition on the population density of the obligate symbiont Buchnera aphidicola and the facultative symbiont Serratia symbiotica in the pea aphid Acyrthosiphon pisum. The population density of the obligate symbiont Buchnera aphidicola positively correlated with dietary nitrogen levels while the population density of the facultative symbiont Serratia symbiotica increased in aphids reared on low-nitrogen diets.

Published
2007

15. Genome sequence of the pea aphid Acyrthosiphon pisum

Author

Richards, S, Gibbs, RA, Gerardo, NM, Moran, N, Nakabachi, A, Stern, D, Tagu, D, Wilson, ACC, Muzny, D, Kovar, C, Cree, A, Chacko, J, Chandrabose, MN, Dao, MD, Dinh, HH, Gabisi, RA, Hines, S, Hume, J, Jhangian, SN, Joshi, V, Lewis, LR, Liu, Y-S, Lopez, J, Morgan, MB, Nguyen, NB, Okwuonu, GO, Ruiz, SJ, Santibanez, J, Wright, RA, Fowler, GR, Hitchens, ME, Lozado, RJ, Moen, C, Steffen, D, Warren, JT, Zhang, J, Nazareth, LV, Chavez, D, Davis, C, Lee, SL, Patel, BM, Pu, L-L, Bell, SN, Johnson, AJ, Vattathil, S, Jr, WRL, Shigenobu, S, Dang, PM, Morioka, M, Fukatsu, T, Kudo, T, Miyagishima, S-Y, Jiang, H, Worley, KC, Legeai, F, Gauthier, J-P, Collin, O, Zhang, L, Chen, H-C, Ermolaeva, O, Hlavina, W, Kapustin, Y, Kiryutin, B, Kitts, P, Maglott, D, Murphy, T, Pruitt, K, Sapojnikov, V, Souvorov, A, Thibaud-Nissen, F, Camara, F, Guigo, R, Stanke, M, Solovyev, V, Kosarev, P, Gilbert, D, Gabaldon, T, Huerta-Cepas, J, Marcet-Houben, M, Pignatelli, M, Moya, A, Rispe, C, Ollivier, M, Quesneville, H, Permal, E, Llorens, C, Futami, R, Hedges, D, Robertson, HM, Alioto, T, Mariotti, M, Nikoh, N, McCutcheon, JP, Burke, G, Kamins, A, Latorre, A, Moran, NA, Ashton, P, Calevro, F, Charles, H, Colella, S, Douglas, A, Jander, G, Jones, DH, Febvay, G, Kamphuis, LG, Kushlan, PF, Macdonald, S, Ramsey, J, Schwartz, J, Seah, S, Thomas, G, Vellozo, A, Cass, B, Degnan, P, Hurwitz, B, Leonardo, T, Koga, R, Altincicek, B, Anselme, C, Atamian, H, Barribeau, SM, de Vos, M, Duncan, EJ, Evans, J, Ghanim, M, Heddi, A, Kaloshian, I, Vincent-Monegat, C, Parker, BJ, Perez-Brocal, V, Rahbe, Y, Spragg, CJ, Tamames, J, Tamarit, D, Tamborindeguy, C, Vilcinskas, A, Bickel, RD, Brisson, JA, Butts, T, Chang, C-C, Christiaens, O, Davis, GK, Duncan, E, Ferrier, D, Iga, M, Janssen, R, Lu, H-L, McGregor, A, Miura, T, Smagghe, G, Smith, J, van der Zee, M, Velarde, R, Wilson, M, Dearden, P, Edwards, OR, Gordon, K, Hilgarth, RS, Jr, RSD, Srinivasan, D, Walsh, TK, Ishikawa, A, Jaubert-Possamai, S, Fenton, B, Huang, W, Rizk, G, Lavenier, D, Nicolas, J, Smadja, C, Zhou, J-J, Vieira, FG, He, X-L, Liu, R, Rozas, J, Field, LM, Ashton, PD, Campbell, P, Carolan, JC, Douglas, AE, Fitzroy, CIJ, Reardon, KT, Reeck, GR, Singh, K, Wilkinson, TL, Huybrechts, J, Abdel-latief, M, Robichon, A, Veenstra, JA, Hauser, F, Cazzamali, G, Schneider, M, Williamson, M, Stafflinger, E, Hansen, KK, Grimmelikhuijzen, CJP, Price, DRG, Caillaud, M, van Fleet, E, Ren, Q, Gatehouse, JA, Brault, V, Monsion, B, Diaz, J, Hunnicutt, L, Ju, H-J, Pechuan, X, Aguilar, J, Cortes, T, Ortiz-Rivas, B, Martinez-Torres, D, Dombrovsky, A, Dale, RP, Davies, TGE, Williamson, MS, Jones, A, Sattelle, D, Williamson, S, Wolstenholme, A, Cottret, L, Sagot, MF, Heckel, DG, Hunter, W, Consortium, IAG, Universitat de Barcelona, Princeton University, Biologie des organismes et des populations appliquées à la protection des plantes (BIO3P), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Biologie Fonctionnelle, Insectes et Interactions (BF2I), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), Baylor College of Medicine (BCM), Baylor University, An algorithmic view on genomes, cells, and environments (BAMBOO), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), IAGC, Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon, Eisen, Jonathan A., and Eisen, Jonathan A

Subjects
0106 biological sciences, TANDEM REPEATS, Genome, Insect, Gene Transfer, RRES175, Sequència genòmica, Faculty of Science\Computer Science, CPG METHYLATION, 01 natural sciences, Genome, Medical and Health Sciences, International Aphid Genomics Consortium, Biologiska vetenskaper, Biology (General), GENE-EXPRESSION, 2. Zero hunger, Genetics, 0303 health sciences, Aphid, Afídids, General Neuroscience, GENOME SEQUENCE, food and beverages, DROSOPHILA CIRCADIAN CLOCK, Biological Sciences, Genetics and Genomics/Microbial Evolution and Genomics, INSECTE, Genètica microbiana, puceron, APIS-MELLIFERA, General Agricultural and Biological Sciences, Infection, symbiose, Biotechnology, Research Article, VIRUS VECTORING, 175_Genetics, SYMBIOTIC BACTERIA, Gene Transfer, Horizontal, QH301-705.5, ACYRTHOSIPHON PISUM, Biology, HOLOMETABOLOUS INSECTS, HOST-PLANT, 010603 evolutionary biology, PEA APHID, INSECT-PLANT, PHENOTYPIC PLASTICITY, RAVAGEUR DES CULTURES, SOCIAL INSECT, General Biochemistry, Genetics and Molecular Biology, Horizontal, 03 medical and health sciences, Buchnera, Gene family, Life Science, Animals, Symbiosis, Gene, 030304 developmental biology, Whole genome sequencing, General Immunology and Microbiology, Annotation, Genome sequence, Agricultural and Veterinary Sciences, 175_Entomology, Genètica animal, Bacteriocyte, génome, gène, Human Genome, Biology and Life Sciences, 15. Life on land, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, REPETITIVE ELEMENTS, DNA-SEQUENCES, Acyrthosiphon pisum, Genome Sequence, Genetics and Genomics/Genome Projects, Aphids, PHEROMONE-BINDING, Insect, Developmental Biology, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Abstract

The genome of the pea aphid shows remarkable levels of gene duplication and equally remarkable gene absences that shed light on aspects of aphid biology, most especially its symbiosis with Buchnera., Aphids are important agricultural pests and also biological models for studies of insect-plant interactions, symbiosis, virus vectoring, and the developmental causes of extreme phenotypic plasticity. Here we present the 464 Mb draft genome assembly of the pea aphid Acyrthosiphon pisum. This first published whole genome sequence of a basal hemimetabolous insect provides an outgroup to the multiple published genomes of holometabolous insects. Pea aphids are host-plant specialists, they can reproduce both sexually and asexually, and they have coevolved with an obligate bacterial symbiont. Here we highlight findings from whole genome analysis that may be related to these unusual biological features. These findings include discovery of extensive gene duplication in more than 2000 gene families as well as loss of evolutionarily conserved genes. Gene family expansions relative to other published genomes include genes involved in chromatin modification, miRNA synthesis, and sugar transport. Gene losses include genes central to the IMD immune pathway, selenoprotein utilization, purine salvage, and the entire urea cycle. The pea aphid genome reveals that only a limited number of genes have been acquired from bacteria; thus the reduced gene count of Buchnera does not reflect gene transfer to the host genome. The inventory of metabolic genes in the pea aphid genome suggests that there is extensive metabolite exchange between the aphid and Buchnera, including sharing of amino acid biosynthesis between the aphid and Buchnera. The pea aphid genome provides a foundation for post-genomic studies of fundamental biological questions and applied agricultural problems., Author Summary Aphids are common pests of crops and ornamental plants. Facilitated by their ancient association with intracellular symbiotic bacteria that synthesize essential amino acids, aphids feed on phloem (sap). Exploitation of a diversity of long-lived woody and short-lived herbaceous hosts by many aphid species is a result of specializations that allow aphids to discover and exploit suitable host plants. Such specializations include production by a single genotype of multiple alternative phenotypes including asexual, sexual, winged, and unwinged forms. We have generated a draft genome sequence of the pea aphid, an aphid that is a model for the study of symbiosis, development, and host plant specialization. Some of the many highlights of our genome analysis include an expanded total gene set with remarkable levels of gene duplication, as well as aphid-lineage-specific gene losses. We find that the pea aphid genome contains all genes required for epigenetic regulation by methylation, that genes encoding the synthesis of a number of essential amino acids are distributed between the genomes of the pea aphid and its symbiont, Buchnera aphidicola, and that many genes encoding immune system components are absent. These genome data will form the basis for future aphid research and have already underpinned a variety of genome-wide approaches to understanding aphid biology.

Published
2010
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26. Trials to Deploy Field Servers in China

Author

Hirafuji, M., primary, Hu, H., additional, Yoichi, H., additional, Kiura, T., additional, Fukatsu, T., additional, Ninimiya, S., additional, Fujimori, H., additional, Teng, G., additional, Tong, C., additional, Xu, X, additional, Jiao, J., additional, and Wang, S., additional

Published
2006
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39. Male death resulting from hybridization between subspecies of the gypsy moth, Lymantria dispar.

Author

Higashiura, Y., Yamaguchi, H., Ishihara, M., Ono, N., Tsukagoshi, H., Yokobori, S., Tokishita, S., Yamagata, H., and Fukatsu, T.

Subjects
ANIMAL mortality, LEPIDOPTERA, LYMANTRIA dispar, GENETIC sex determination, SEXUAL behavior in insects, ANIMAL clutches, SPECIES hybridization
Abstract

We explored the origin of all-female broods resulting from male death in a Hokkaido population of Lymantria dispar through genetic crosses based on the earlier experiments done by Goldschmidt and by testing for the presence of endosymbionts that are known to cause male killing in some insect species. The mitochondrial DNA haplotypes of the all-female broods in Hokkaido were different from those of normal Hokkaido females and were the same as those widely distributed in Asia, including Tokyo (TK). Goldschmidt obtained all-female broods through backcrossing, that is, F1 females obtained by a cross between TK females (L. dispar japonica) and Hokkaido males (L. dispar praeterea) mated with Hokkaido males. He also obtained all-male broods by mating Hokkaido females with TK males. Goldschmidt inferred that female- and male-determining factors were weakest in the Hokkaido subspecies and stronger in the Honshu (TK) subspecies. According to his theory, the females of all-female broods mated with Honshu males should produce normal sex-ratio broods, whereas weaker Hokkaido sexes would be expected to disappear in F1 or F2 generations after crossing with the Honshu subspecies. We confirmed both of Goldschmidt's results: in the case of all-female broods mated with Honshu males, normal sex-ratio broods were produced, but we obtained only all-female broods in the Goldschmidt backcross and obtained an all-male brood in the F1 generation of a Hokkaido female crossed with a TK male. We found no endosymbionts in all-female broods by 4,′6-diamidino-2-phenylindole (DAPI) staining. Therefore, the all-female broods observed in L. dispar are caused by some incompatibilities between Honshu and Hokkaido subspecies. [ABSTRACT FROM AUTHOR]

Published
2011
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46. Production and characterization of monoclonal antibody to dermatan sulfate proteoglycan.

Author

Sobue, M, Nakashima, N, Fukatsu, T, Nagasaka, T, Katoh, T, Ogura, T, and Takeuchi, J

Abstract

We purified dermatan sulfate proteoglycan (PG) from the capsule of human ovarian fibroma for use as an immunogen. A monoclonal antibody, designated 6B6, was produced which reacts to the intact molecule of dermatan sulfate PG and the chondroitinase AC-treated core molecule on Western-blotted nitrocellulose membrane. Localization of materials showing crossreactivity to this antibody was studied in human tissues by indirect immunohistochemistry. The interstitial elements of almost all tissues examined were positive for the antibody: dermis, submucosal layer of digestive tract, perichondral layer, perivascular connective tissue, perineurium, adventitia of aorta, vessel wall of vein, pleura, and fibrous capsule of kidney and liver. Positive staining was also observed in fibrous elements at post-necrotic foci of cardiac muscle and pancreas, and at atherosclerotic lesions of aorta. The distribution of the antigen, core protein of the dermatan sulfate PG, revealed with 6B6 was compared to that of the dermatan sulfate side chain, which was demonstrated with antibody 9A-2 (Couchman et al.: Nature 307:650, 1984) after treatment with chondroitin sulfate B-lyase. The distribution of both antigens, core protein, and dermatan sulfate side chains showed the same pattern, with minor exceptions. The antibody 6B6 will be a useful tool to study the immunohistochemical localization of dermatan sulfate PG.

Published
1988
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