Carbon partitioning in a split-root system of arbuscular mycorrhizal plants is fungal and plant species dependent

被引:64
作者
Lerat, S
Lapointe, L
Gutjahr, S
Piché, Y
Vierheilig, H
机构
[1] Univ Laval, Dept Biol, Quebec City, PQ G1K 7P4, Canada
[2] Univ Laval, Ctr Rech Biol Forestiere, Quebec City, PQ G1K 7P4, Canada
[3] Univ Agr Sci, Dept Plant Protect, A-1190 Vienna, Austria
关键词
arbuscular mycorrhizal (AM) fungi; carbon sink; colonization levels; barley (Hordeum vulgare); sugar maple (Acer saccharum); Glomus intraradices; Glomus mosseae; Gigaspora rosea;
D O I
10.1046/j.1469-8137.2003.00691.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Root carbon (C) partitioning in two host plant species colonized by one of three arbuscular mycorrhizal (AM) fungal species was investigated. Split-root systems of barley (Hordeum vulgare) and sugar maple (Acer saccharum) were inoculated on one side with one of three AM fungi. Leaves were labelled with (CO2)-C-14 3 wk after inoculation. Plants were harvested 24 h later and the root systems from the mycorrhizal (M) and nonmycorrhizal (NM) sides were analysed separately for C-14. Partitioning of C-14 between M and NM sides varied depending on the fungal and host plant species used. Gigaspora rosea showed a strong C-sink capacity with both plant species, Glomus intraradices showed a strong C-sink capacity with barley, and Glomus mosseae did not affect C-14 partitioning. The C-sink strength of the M barley roots inoculated with G. rosea or G. intraradices was linearly correlated with the degree of colonization. The use of three AM fungal and two plant species allowed us to conclude that C-sink strength of AM fungi depends on both partners involved in the symbiosis.
引用
收藏
页码:589 / 595
页数:7
相关论文
共 41 条
[1]   Carbon metabolism and transport in arbuscular mycorrhizas [J].
Bago, B ;
Pfeffer, PE ;
Shachar-Hill, Y .
PLANT PHYSIOLOGY, 2000, 124 (03) :949-957
[2]   SUSCEPTIBILITY OF BARLEY CULTIVARS TO VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI [J].
BOYETCHKO, SM ;
TEWARI, JP .
CANADIAN JOURNAL OF PLANT SCIENCE, 1995, 75 (01) :269-275
[3]   EXAMINATION OF VALUE OF C-14-UREA AS A SOURCE OF CO2-14 FOR STUDIES OF ASSIMILATE DISTRIBUTION [J].
CLIFFORD, PE ;
MARSHALL, C ;
SAGAR, GR .
ANNALS OF BOTANY, 1973, 37 (149) :37-44
[4]  
DEHNE HW, 1982, PHYTOPATHOLOGY, V72, P1115
[5]   Mycelium of Arbuscular Mycorrhizal fungi (AMF) from different genera: form, function and detection [J].
Dodd, JC ;
Boddington, CL ;
Rodriguez, A ;
Gonzalez-Chavez, C ;
Mansur, I .
PLANT AND SOIL, 2000, 226 (02) :131-151
[6]   CARBON COST OF THE FUNGAL SYMBIONT RELATIVE TO NET LEAF-P ACCUMULATION IN A SPLIT-ROOT VA MYCORRHIZAL SYMBIOSIS [J].
DOUDS, DD ;
JOHNSON, CR ;
KOCH, KE .
PLANT PHYSIOLOGY, 1988, 86 (02) :491-496
[7]  
Douds DD., 2000, ARBUSCULAR MYCORRHIZ, P107, DOI DOI 10.1007/978-94-017-0776-3_6
[8]   Wheat responses to aggressive and non-aggressive arbuscular mycorrhizal fungi [J].
Graham, JH ;
Abbott, LK .
PLANT AND SOIL, 2000, 220 (1-2) :207-218
[9]  
Graham JH, 2000, CURRENT ADVANCES IN MYCORRHIZAE RESEARCH, P127
[10]   Taxonomic basis for variation in the colonization strategy of arbuscular mycorrhizal fungi [J].
Hart, MM ;
Reader, RJ .
NEW PHYTOLOGIST, 2002, 153 (02) :335-344