Chemotropism in the arbuscular mycorrhizal fungus Glomus mosseae

被引:41
作者
Sbrana, C
Giovannetti, M
机构
[1] CNR, Ist Biol & Biotecnol Agraria, I-56124 Pisa, Italy
[2] Dipartimento Biol Piante Agrarie, I-56124 Pisa, Italy
关键词
chemotropism; growth reorientation; arbuscular mycorrhizal fungi; host recognition; root-derived factors;
D O I
10.1007/s00572-005-0362-5
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In this work, we report the occurrence of chemotropism in the arbuscular mycorrhizal (AM) fungus Glomus mosseae. Fungal hyphae were able to respond to host-derived signals by reorienting their growth towards roots and to perceive chemotropic signals at a distance of at least 910 mu m from roots. In order to reach the source of chemotropic signals, hyphal tips crossed interposed membranes emerging within 1 mm from roots, eventually establishing mycorrhizal symbiosis. The specificity of chemotropic growth was evidenced by hyphal growth reorientation and membrane penetration occurring only in experimental systems set up with host plants. Since pre-symbiotic growth is a critical stage in the life cycle of obligate AM fungal symbionts, chemotropic guidance may represent an important mechanism functional to host root location, appressorium formation and symbiosis establishment.
引用
收藏
页码:539 / 545
页数:7
相关论文
共 51 条
[1]  
AGUILAR JMM, 1988, J GEN MICROBIOL, V134, P2741
[2]  
ASHBY AM, 1987, FEMS MICROBIOL LETT, V41, P189, DOI 10.1111/j.1574-6968.1987.tb02194.x
[3]   TI PLASMID-SPECIFIED CHEMOTAXIS OF AGROBACTERIUM-TUMEFACIENS C58C1 TOWARD VIR-INDUCING PHENOLIC-COMPOUNDS AND SOLUBLE FACTORS FROM MONOCOTYLEDONOUS AND DICOTYLEDONOUS PLANTS [J].
ASHBY, AM ;
WATSON, MD ;
LOAKE, GJ ;
SHAW, CH .
JOURNAL OF BACTERIOLOGY, 1988, 170 (09) :4181-4187
[4]   Responses of an arbuscular mycorrhizal fungus, Gigaspora margarita, to exudates and volatiles from the Ri T-DNA-transformed roots of nonmycorrhizal and mycorrhizal mutants of Pisum sativum L sparkle [J].
Balaji, B ;
Poulin, MJ ;
Vierheilig, H ;
Piche, Y .
EXPERIMENTAL MYCOLOGY, 1995, 19 (04) :275-283
[5]  
BECARD G, 1989, APPL ENVIRON MICROB, V55, P2320
[6]   ELECTRICAL CURRENTS ASSOCIATED WITH ARBUSCULAR MYCORRHIZAL INTERACTIONS [J].
BERBARA, RLL ;
MORRIS, BM ;
FONSECA, HMAC ;
REID, B ;
GOW, NAR ;
DAFT, MJ .
NEW PHYTOLOGIST, 1995, 129 (03) :433-438
[7]   PHYSIOLOGY OF BEHAVIORAL MUTANTS OF RHIZOBIUM-MELILOTI - EVIDENCE FOR A DUAL CHEMOTAXIS PATHWAY [J].
BERGMAN, K ;
GULASHHOFFEE, M ;
HOVESTADT, RE ;
LAROSILIERE, RC ;
RONCO, PG ;
SU, L .
JOURNAL OF BACTERIOLOGY, 1988, 170 (07) :3249-3254
[8]   The pre-symbiotic growth of arbuscular mycorrhizal fungi is induced by a branching factor partially purified from plant root exudates [J].
Buee, M ;
Rossignol, M ;
Jauneau, A ;
Ranjeva, R ;
Bécard, G .
MOLECULAR PLANT-MICROBE INTERACTIONS, 2000, 13 (06) :693-698
[9]   ROLE OF MOTILITY AND CHEMOTAXIS IN EFFICIENCY OF NODULATION BY RHIZOBIUM-MELILOTI [J].
CAETANOANOLLES, G ;
WALL, LG ;
DEMICHELI, AT ;
MACCHI, EM ;
BAUER, WD ;
FAVELUKES, G .
PLANT PHYSIOLOGY, 1988, 86 (04) :1228-1235
[10]   Targeted inoculation of Medicago truncatula in vitro root cultures reveals MtENOD11 expression during early stages of infection by arbuscular mycorrhizal fungi [J].
Chabaud, M ;
Venard, C ;
Defaux-Petras, A ;
Bécard, G ;
Barker, DG .
NEW PHYTOLOGIST, 2002, 156 (02) :265-273