Bacteria associated with Pinus sylvestris-Lactarius rufus ectomycorrhizas and their effects on mycorrhiza formation in vitro

被引:122
作者
Poole, EJ
Bending, GD [1 ]
Whipps, JM
Read, DJ
机构
[1] Hort Res Int, Dept Soil & Environm Sci, Wellesbourne CV35 9EF, Warwick, England
[2] Hort Res Int, Dept Plant Pathol & Microbiol, Wellesbourne CV35 9EF, Warwick, England
[3] Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
关键词
ectomycorrhiza; mycorrhizosphere; helper bacteria; Lactarius rufus; Pinus sylvestris; Burkholderia; Paenibacillus; Rhodococcus;
D O I
10.1046/j.0028-646x.2001.00219.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The structure and functioning of mycorrhizosphere bacterial communities from the soil organic fermentation horizon (FH) of a Pinus sylvestris stand was investigated. Bacteria were isolated from A sylvestris-Lactarius rufus mycorrhizas, and their effect on ectomycorrhiza formation, localization within the mycorrhizosphere, and phenotypic and genotypic characteristics determined. The isolates could be divided into seven distinct phenotypic and physiological groups. Two Paenibacillus isolates stimulated infection of both first and second order lateral roots, resulting in a doubling of the percentage root conversion to mycorrhizas, relative to the control treatment, after 8 wk. Two Burkholderia. isolates, and a Rhodococcus sp., had no effect on numbers of first order mycorrhizal lateral roots, but increased formation of secondary mycorrhizal lateral roots. There was evidence that the Burkholderia, but not the Paenibacillus or Rhodococcus isolates, associated preferentially with mycorrhizal roots, and that the Burkholderia. strains were capable of more effective spread to the root tip than the other isolates. Ectomycorrhizosphere bacteria appear to promote mycorrhiza formation by means of a variety of mechanisms, and there are similarities in the nature of bacteria inhabiting ecto- and arbuscular mycorrhizospheres.
引用
收藏
页码:743 / 751
页数:9
相关论文
共 33 条
[1]  
Agerer R., 1987, Colour atlas of ectomycorrhizae
[2]   STIMULATION OF GERMINATION OF SPORES OF SOME ECTOMYCORRHIZAL FUNGI BY OTHER MICROORGANISMS [J].
ALI, NA ;
JACKSON, RM .
MYCOLOGICAL RESEARCH, 1989, 93 :182-186
[3]   Bacteria from rhizosphere and hyphosphere soils of different arbuscular-mycorrhizal fungi [J].
Andrade, G ;
Mihara, KL ;
Linderman, RG ;
Bethlenfalvay, GJ .
PLANT AND SOIL, 1997, 192 (01) :71-79
[4]   Detection and identification of bacterial endosymbionts in arbuscular mycorrhizal fungi belonging to the family gigasporaceae [J].
Bianciotto, V ;
Lumini, E ;
Lanfranco, L ;
Minerdi, D ;
Bonfante, P ;
Perotto, S .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 2000, 66 (10) :4503-4509
[5]   INTERACTIONS BETWEEN BACTERIA AND ECTOMYCORRHIZAL FUNGI [J].
BOWEN, GD ;
THEODOROU, C .
SOIL BIOLOGY & BIOCHEMISTRY, 1979, 11 (02) :119-126
[6]  
Budi SW, 1999, APPL ENVIRON MICROB, V65, P5148
[7]   PSEUDOMONAS-FLUORESCENS IN ASSOCIATION WITH FRUIT BODIES OF THE ECTOMYCORRHIZAL MUSHROOM CANTHARELLUS-CIBARIUS [J].
DANELL, E ;
ALSTROM, S ;
TERNSTROM, A .
MYCOLOGICAL RESEARCH, 1993, 97 :1148-1152
[8]  
DUDDRIDGE JA, 1986, NEW PHYTOL, V103, P457, DOI 10.1111/j.1469-8137.1986.tb02883.x
[9]   Effects of bacteria on mycorrhizal development and growth of container grown Eucalyptus diversicolor F. Muell. seedlings [J].
Dunstan, WA ;
Malajczuk, N ;
Dell, B .
PLANT AND SOIL, 1998, 201 (02) :241-249
[10]   EFFECT OF DUAL INOCULATION OF DOUGLAS-FIR WITH THE ECTOMYCORRHIZAL FUNGUS LACCARIA-LACCATA AND MYCORRHIZATION HELPER BACTERIA (MHB) IN 2 BARE-ROOT FOREST NURSERIES [J].
DUPONNOIS, R ;
GARBAYE, J .
PLANT AND SOIL, 1991, 138 (02) :169-176