A plant regulator controlling development of symbiotic root nodules

被引:645
作者
Schauser, L [1 ]
Roussis, A [1 ]
Stiller, J [1 ]
Stougaard, J [1 ]
机构
[1] Aarhus Univ, Dept Mol & Struct Biol, Lab Gene Express, DK-8000 Aarhus C, Denmark
关键词
D O I
10.1038/46058
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Symbiotic nitrogen-fixing root nodules on legumes are founded by root cortical cells that de-differentiate and restart cell division to establish nodule primordia. Bacterial microsymbionts invade these primordia through infection threads laid down by the plant and, after endocytosis, membrane-enclosed bacteroids occupy cells in the nitrogen-fixing tissue of functional nodules, The bacteria excrete lipochitin oligosaccharides(1,2), triggering a developmental process that is controlled by the plant and can be suppressed, Nodule inception initially relies on cell competence in a narrow infection zone located just behind the growing root tip. Older nodules then regulate the number of nodules on a root system by suppressing the development of nodule primordia(3), To identify the regulatory components that act early in nodule induction, ive characterized a transposon-tagged Lotus japonicus mutant, nin (for nodule inception), arrested at the stage of bacterial recognition. We show that rlin is required for the formation of infection threads and the initiation of primordia, NlN protein has regional similarity to transcription factors, and the predicted DNA-binding/dimerization domain identifies and typifies a consensus motif conserved in plant proteins with a function in nitrogen-controlled development.
引用
收藏
页码:191 / 195
页数:5
相关论文
共 25 条
  • [11] SEQUENCE OF 2 GENES IN PEA CHLOROPLAST DNA CODING FOR 84-KD AND 82-KD POLYPEPTIDES OF THE PHOTOSYSTEM-I COMPLEX
    LEHMBECK, J
    RASMUSSEN, OF
    BOOKJANS, GB
    JEPSEN, BR
    STUMMANN, BM
    HENNINGSEN, KW
    [J]. PLANT MOLECULAR BIOLOGY, 1986, 7 (01) : 3 - 10
  • [12] STRUCTURAL IDENTIFICATION OF THE LIPO-CHITIN OLIGOSACCHARIDE NODULATION SIGNALS OF RHIZOBIUM-LOTI
    LOPEZLARA, IM
    VANDENBERG, JDJ
    THOMASOATES, JE
    GLUSHKA, J
    LUGTENBERG, BJJ
    SPAINK, HP
    [J]. MOLECULAR MICROBIOLOGY, 1995, 15 (04) : 627 - 638
  • [13] Phaseolus ENOD40 is involved in symbiotic and non-symbiotic organogenetic processes: Expression during nodule and lateral root development
    Papadopoulou, K
    Roussis, A
    Katinakis, P
    [J]. PLANT MOLECULAR BIOLOGY, 1996, 30 (03) : 403 - 417
  • [14] IDENTIFICATION AND INITIAL TOPOLOGICAL ANALYSIS OF THE RICKETTSIA-PROWAZEKII ATP/ADP TRANSLOCASE
    PLANO, GV
    WINKLER, HH
    [J]. JOURNAL OF BACTERIOLOGY, 1991, 173 (11) : 3389 - 3396
  • [15] PUYET A, 1993, J BIOL CHEM, V268, P25402
  • [16] Molecular identification of the sterol-regulated luminal protease that cleaves SREBPs and controls lipid composition of animal cells
    Sakai, J
    Rawson, RB
    Espenshade, PJ
    Cheng, D
    Seegmiller, AC
    Goldstein, JL
    Brown, MS
    [J]. MOLECULAR CELL, 1998, 2 (04) : 505 - 514
  • [17] Symbiotic mutants deficient in nodule establishment identified after T-DNA transformation of Lotus japonicus
    Schauser, L
    Handberg, K
    Sandal, N
    Stiller, J
    Thykjær, T
    Pajuelo, E
    Nielsen, A
    Stougaard, J
    [J]. MOLECULAR AND GENERAL GENETICS, 1998, 259 (04): : 414 - 423
  • [18] Notch-1 signalling requires ligand-induced proteolytic release of intracellular domain
    Schroeter, EH
    Kisslinger, JA
    Kopan, R
    [J]. NATURE, 1998, 393 (6683) : 382 - 386
  • [19] HOW PROTEINS ENTER THE NUCLEUS
    SILVER, PA
    [J]. CELL, 1991, 64 (03) : 489 - 497
  • [20] A NOVEL HIGHLY UNSATURATED FATTY-ACID MOIETY OF LIPO-OLIGOSACCHARIDE SIGNALS DETERMINES HOST SPECIFICITY OF RHIZOBIUM
    SPAINK, HP
    SHEELEY, DM
    VANBRUSSEL, AAN
    GLUSHKA, J
    YORK, WS
    TAK, T
    GEIGER, O
    KENNEDY, EP
    REINHOLD, VN
    LUGTENBERG, BJJ
    [J]. NATURE, 1991, 354 (6349) : 125 - 130