Up-regulation of genes involved in N -acetylglucosamine uptake and metabolism suggests a recycling mode of chitin in intraradical mycelium of arbuscular mycorrhizal fungi

Verfasser / Beitragende:
[Yoshihiro Kobae, Miki Kawachi, Katsuharu Saito, Yusuke Kikuchi, Tatsuhiro Ezawa, Masayoshi Maeshima, Shingo Hata, Toru Fujiwara]
Ort, Verlag, Jahr:
2015
Enthalten in:
Mycorrhiza, 25/5(2015-07-01), 411-417
Format:
Artikel (online)
ID: 605518297
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024 7 0 |a 10.1007/s00572-014-0623-2  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00572-014-0623-2 
245 0 0 |a Up-regulation of genes involved in N -acetylglucosamine uptake and metabolism suggests a recycling mode of chitin in intraradical mycelium of arbuscular mycorrhizal fungi  |h [Elektronische Daten]  |c [Yoshihiro Kobae, Miki Kawachi, Katsuharu Saito, Yusuke Kikuchi, Tatsuhiro Ezawa, Masayoshi Maeshima, Shingo Hata, Toru Fujiwara] 
520 3 |a Arbuscular mycorrhizal (AM) fungi colonize roots and form two kinds of mycelium, intraradical mycelium (IRM) and extraradical mycelium (ERM). Arbuscules are characteristic IRM structures that highly branch within host cells in order to mediate resource exchange between the symbionts. They are ephemeral structures and at the end of their life span, arbuscular branches collapse from the tip, fungal cytoplasm withdraws, and the whole arbuscule shrinks into fungal clumps. The exoskeleton of an arbuscule contains structured chitin, which is a polymer of N-acetylglucosamine (GlcNAc), whereas a collapsed arbuscule does not. The molecular mechanisms underlying the turnover of chitin in AM fungi remain unknown. Here, a GlcNAc transporter, RiNGT, was identified from the AM fungus Rhizophagus irregularis. Yeast mutants defective in endogenous GlcNAc uptake and expressing RiNGT took up 14C-GlcNAc, and the optimum uptake was at acidic pH values (pH 4.0-4.5). The transcript levels of RiNGT in IRM in mycorrhizal Lotus japonicus roots were over 1000 times higher than those in ERM. GlcNAc-6-phosphate deacetylase (DAC1) and glucosamine-6-phosphate isomerase (NAG1) genes, which are related to the GlcNAc catabolism pathway, were also induced in IRM. Altogether, data suggest the existence of an enhanced recycling mode of GlcNAc in IRM of AM fungi. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Arbuscular mycorrhizal fungi  |2 nationallicence 
690 7 |a Chitin recycling  |2 nationallicence 
690 7 |a N -acetylglucosamine (GlcNAc) transporter  |2 nationallicence 
690 7 |a Rhizophagus irregularis  |2 nationallicence 
700 1 |a Kobae  |D Yoshihiro  |u Graduate School of Agricultural and Life Sciences, University of Tokyo, 113-8657, Tokyo, Japan  |4 aut 
700 1 |a Kawachi  |D Miki  |u Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan  |4 aut 
700 1 |a Saito  |D Katsuharu  |u Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, 399-4598, Nagano, Japan  |4 aut 
700 1 |a Kikuchi  |D Yusuke  |u Graduate School of Agriculture, Hokkaido University, 060-8589, Sapporo, Hokkaido, Japan  |4 aut 
700 1 |a Ezawa  |D Tatsuhiro  |u Graduate School of Agriculture, Hokkaido University, 060-8589, Sapporo, Hokkaido, Japan  |4 aut 
700 1 |a Maeshima  |D Masayoshi  |u Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan  |4 aut 
700 1 |a Hata  |D Shingo  |u Institute of Agriculture, Ryukoku University, 67 Tsukamoto-cho, Fukakusa, 612-8577, Fushimi-ku, Kyoto, Japan  |4 aut 
700 1 |a Fujiwara  |D Toru  |u Graduate School of Agricultural and Life Sciences, University of Tokyo, 113-8657, Tokyo, Japan  |4 aut 
773 0 |t Mycorrhiza  |d Springer Berlin Heidelberg  |g 25/5(2015-07-01), 411-417  |x 0940-6360  |q 25:5<411  |1 2015  |2 25  |o 572 
856 4 0 |u https://doi.org/10.1007/s00572-014-0623-2  |q text/html  |z Onlinezugriff via DOI 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kobae  |D Yoshihiro  |u Graduate School of Agricultural and Life Sciences, University of Tokyo, 113-8657, Tokyo, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kawachi  |D Miki  |u Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Saito  |D Katsuharu  |u Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, 399-4598, Nagano, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kikuchi  |D Yusuke  |u Graduate School of Agriculture, Hokkaido University, 060-8589, Sapporo, Hokkaido, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ezawa  |D Tatsuhiro  |u Graduate School of Agriculture, Hokkaido University, 060-8589, Sapporo, Hokkaido, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Maeshima  |D Masayoshi  |u Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hata  |D Shingo  |u Institute of Agriculture, Ryukoku University, 67 Tsukamoto-cho, Fukakusa, 612-8577, Fushimi-ku, Kyoto, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Fujiwara  |D Toru  |u Graduate School of Agricultural and Life Sciences, University of Tokyo, 113-8657, Tokyo, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Mycorrhiza  |d Springer Berlin Heidelberg  |g 25/5(2015-07-01), 411-417  |x 0940-6360  |q 25:5<411  |1 2015  |2 25  |o 572