ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Growth response of Afzelia africana Sm. seedlings to ectomycorrhizal inoculation in a nutrient-deficient soil (1999)
    Springer
    Mycorrhiza 9 (1999), S. 91-95 
    Details
    ISSN: 1432-1890
    Keywords: Key words Afzelia africana ; Provenances ; Scleroderma spp. ; Plant growth ; Mineral nutrition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The growth and mineral nutrition responses of seedlings of two provenances of Afzelia africana Sm. from Senegal and Burkina Faso, inoculated with four ectomycorrhizal (ECM) fungi (Scleroderma spp. and an unidentified isolate) from the same regions were assessed in a pot experiment in a savanna ECM-propagule-free soil deficient in NPK. There was little variation in the ability of the different fungal species to colonize roots of either provenance of A. africana or to produce external hyphal in soil. Root colonization by ECM fungi and their hyphal development were not related to mineral nutrition or ECM dependency. Differences in P, N, Mg and Ca concentrations in the leaves of inoculated and non-inoculated Afzelia seedlings were not always associated with production of biomass. Only leaf K concentration increased in both provenances after ECM inoculation. However, the Burkina Faso provenance responded better to inoculation with the two fungal isolates than the Senegal provenance in terms of biomass production. This was due to stimulation of root dry weight of the Burkina Faso provenance. Therefore, the hypothesis arises that non-nutritional rather than nutritional effects explain the contribution of ECM inoculation to the growth of A. africana seedlings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050005
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Root soluble carbohydrates of Afzelia africana Sm. seedlings and modifications of mycorrhiza establishment in response to the excision of cotyledons (1994)
    Springer
    Mycorrhiza 4 (1994), S. 269-275 
    Details
    ISSN: 1432-1890
    Keywords: Ectomycorrhiza formation ; Root soluble carbohydrates ; Cotyledon excision ; Hypersensitive reaction ; Afzelia africana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Stem length, number of secondary lateral roots, shoot dry weight and reducing sugar concentrations of root were significantly reduced when translocation of reserves from cotyledons to the roots of Afzelia africana seedlings was interrupted by complete or partial cotyledon excision. The sucrose but not the glucose concentration of lateral roots also decreased significantly after complete cotyledon excision. Hartig net development rather than fungal sheath formation was affected after inoculation with the early fungal isolate E1 and by both late-stage fungal isolates L1 and L2 after partial or complete cotyledon excision. However, mycorrhizal colonization by the early fungal isolate E2 was not affected by cotyledonary reserves, suggesting that this fungal isolate has a lower carbohydrate requirement than fungal isolates E1, L1 and L2. The late-stage fungal isolates L1 and L2 induced a hypersensitivity reaction by epidermal cell walls of the host plant after complete cotyledon excision, suggesting they are more dependent than the early fungal isolate E1 on available root carbohydrate substrates for ectomycorrhizal colonization. These results are discussed in the light of the hypothesis that early and late-stage fungi were different carbohydrate requirements, and that the time sequence of colonization was related to the root carbohydrate status, which increased with time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206776
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Root soluble carbohydrates of Afzelia africana Sm. seedlings and modifications of mycorrhiza establishment in response to the excision of cotyledons (1994)
    Springer
    Mycorrhiza 4 (1994), S. 269-275 
    Details
    ISSN: 1432-1890
    Keywords: Key words: Ectomycorrhiza formation – Root soluble carbohydrates – Cotyledon excision – Hypersensitive reaction –Afzelia africana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Stem length, number of secondary lateral roots, shoot dry weight and reducing sugar concentrations of root were significantly reduced when translocation of reserves from cotyledons to the roots of Afzelia africana seedlings was interrupted by complete or partial cotyledon excision. The sucrose but not the glucose concentration of lateral roots also decreased significantly after complete cotyledon excision. Hartig net development rather than fungal sheath formation was affected after inoculation with the early fungal isolate E1 and by both late-stage fungal isolates L1 and L2 after partial or complete cotyledon excision. However, mycorrhizal colonization by the early fungal isolate E2 was not affected by cotyledonary reserves, suggesting that this fungal isolate has a lower carbohydrate requirement than fungal isolates E1, L1 and L2. The late-stage fungal isolates L1 and L2 induced a hypersensitivity reaction by epidermal cell walls of the host plant after complete cotyledon excision, suggesting they are more dependent than the early fungal isolate E1 on available root carbohydrate substrates for ectomycorrhizal colonization. These results are discussed in the light of the hypothesis that early- and late-stage fungi were different carbohydrate requirements, and that the time sequence of colonization was related to the root carbohydrate status, which increased with time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050032
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Rock phosphate and vesicular-arbuscular mycorrhiza effects on growth and nutrient uptake of Faidherbia albida (Del.) seedlings in an alkaline sandy soil (1996)
    Springer
    Agroforestry systems 34 (1996), S. 129-137 
    Details
    ISSN: 1572-9680
    Keywords: Glomus aggregatum ; Glomus manihotis ; Kodjari rock phosphate ; nutrient uptake efficiency ; VAM plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Response of Faidherbia albida (Del.) to five levels of Kodjari rock phosphate (KRP) application (0, 310, 620, 1240 and 2480 ppm P, equivalent to 0, 775, 1550, 3100 and 6200 kg P/ha) and vesicular-arbuscular mycorrhizal fungi (VAMF) Glomus manihotis Howeler, Sieverding & Schenck or Glomus aggregatum Schenck & Smith emend. Koske was evaluated in an alkaline sandy soil. The F. albida seedlings grew poorly without mycorrhizal colonization and without KRP applications. For non-VAM Faidherbia, the maximum growth response and both P and N uptake in shoots was achieved with the 620 ppm P. However, even without KRP application, VAM plants achieved better results in terms of biomass. VAM plants with G. manihotis and G. aggregatum improved plant growth and increased nutrient contents at any KRP application rate. Although mycorrhizal colonization was comparable at all levels of KRP application, the impact of nutrient content of the shoot varied. Finally, VAM plants did not accumulate more biomass than non-VAM plants at 620 ppm P and above. Growth response and mycorrhizal dependency decreased as KRP applied levels increased. These results suggest that VAM Faidherbia seedlings take up more P from soil and KRP than non-VAM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148157
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The influence of culture conditions on mycorrhiza formation between the ectomycorrhizal fungus Pisolithus sp. and Afzelia africana Sm. seedlings (1994)
    Springer
    Mycorrhiza 4 (1994), S. 121-129 
    Details
    ISSN: 1432-1890
    Keywords: Key words: Ectomycorrhizae –Afzelia africana–Pisolithus sp. – Wall ingrowth – Wall thickening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Interactions between an isolate of the ectomycorrhizal fungus Pisolithus sp. and Afzelia africana Sm. seedlings were studied at the structural and ultrastructural levels. Several different conditions were tested with or without sugar and in a sterile or nonsterile medium. In the growth cabinet, the A. africana/Pisolithus sp. interactions did not produce ectomycorrhizas. A fungal sheath was formed but no Hartig net, and an unusual host epidermal cell wall was observed. Hyphae of Pisolithus sp. induced modifications of epidermal cells of 15-day-old A. africana seedlings indicative of non-mycorrhizal interactions, such as wall thickening, wall ingrowth, papillae formation, degraded host wall material and the presence of intracellular hyphae. Wall ingrowth consisted of depositions of host cell wall materials giving a positive reaction for polysaccharides; however, wall thickenings and papillae showed no homogeneous reactions for polysaccharides. In glasshouse conditions, inocula of Pisolithus sp. in the form of spores or mycelia entrapped in peat-vermiculite added to sterilized soil produced typical ectomycorrhizae only with 6-month-old A. africana seedlings. Under these conditions, no conspicuous cell wall reactions occurred on A. africana roots. The results demonstrate that the establishment of an association between an ectom corrhizal fungus and a potential host plant is strongly influenced by seedling age and/or environmental conditions. Therefore, in vitro synthesis is not a conclusive demonstration of a symbiotic relationship.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050011
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The influence of culture conditions on mycorrhiza formation between the ectomycorrhizal fungus Pisolithus sp. and Afzelia africana Sm. seedlings (1994)
    Springer
    Mycorrhiza 4 (1994), S. 121-129 
    Details
    ISSN: 1432-1890
    Keywords: Ectomycorrhizae ; Afzelia africana ; Pisolithus sp. ; Wall ingrowth ; Wall thickening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Interactions between an isolate of the ectomycorrhizal fungus Pisolithus sp. and Afzelia africana Sm. seedlings were studied at the structural and ultrastructural levels. Several different conditions were tested with or without sugar and in a sterile or nonsterile medium. In the growth cabinet, the A. africana/Pisolithus sp. interactions did not produce ectomycorrhizas. A fungal sheath was formed but no Hartig net, and an unusual host epidermal cell wall was observed. Hyphae of Pisolithus sp. induced modifications of epidermal cells of 15-day-old A. africana seedlings indicative of non-mycorrhizal interactions, such as wall thickening, wall ingrowth, papillae formation, degraded host wall material and the presence of intracellular hyphae. Wall ingrowth consisted of depositions of host cell wall materials giving a positive reaction for polysaccharides; however, wall thickenings and papillae showed no homogeneous reactions for polysaccharides. In glasshouse conditions, inocula of Pisolithus sp. in the form of spores or mycelia entrapped in peat-vermiculite added to sterilized soil produced typical ectomycorrhizae only with 6-month-old A. africana seedlings. Under these conditions, no conspicuous cell wall reactions occurred on A. africana roots. The results demonstrate that the establishment of an association between an ectomycorrhizal fungus and a potential host plant is strongly influenced by seedling age and/or environmental conditions. Therefore, in vitro synthesis is not a conclusive demonstration of a symbiotic relationship.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203771
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Effect of time of inoculation on in vitro ectomycorrhizal colonization and nodule initiation in Acacia holosericea seedlings (1994)
    Springer
    Mycorrhiza 4 (1994), S. 109-119 
    Details
    ISSN: 1432-1890
    Keywords: Key words: Time of inoculation –Acacia holosericea–Bradyrhizobium sp. –Pisolithus tinctorius– Competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. The complex interactions that occur in systems with more than one type of symbiosis were studied using one isolate of Bradyrhizobium sp. and the ectomycorrhizal fungus Pisolithus tinctorius (Pers.) Coker and Couch inoculated on to the roots of Acacia holosericea A. Cunn. ex G. Don in vitro. After a single inoculation with Bradyrhizobium sp., bacteria typically entered the roots by forming infection threads in the root hair cells via the curling point of the root hair and/or after intercellular penetration. Sheath formation and intercellular penetration were observed on Acacia roots after a single inoculation with Pisolithus tinctorius but no radial elongation of epidermal cells. Simultaneous inoculation with both microorganisms resulted in nodules and ectomycorrhiza on the root system, occasionally on the same lateral root. On lateral roots bearing nodules and ectomycorrhiza, the nodulation site was characterized by the presence of a nodule meristem and the absence of an infection thread; sheath formation and Hartig net development occurred regularly in the region of the roots adjacent to nodules. Prior inoculation with Bradyrhizobium sp. did not inhibit ectomycorrhizal colonization in root segments adjacent to nodules in which nodule meristems and infection threads were clearly present. Conversely, in ectomycorrhizae inoculated by bacteria, the nodule meristem and the infection thread were typically absent. These results show that simultaneous inoculation with both microorganisms inhibits infection thread development, thus conferring an advantage on fungal hyphae in the competition for infection sites. This suggests that fungal hyphae can modify directly and/or indirectly the recognition factors leading to nodule meristem initiation and infection thread development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050010
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Effect of time of inoculation on in vitro ectomycorrhizal colonization and nodule initiation in Acacia holosericea seedlings (1994)
    Springer
    Mycorrhiza 4 (1994), S. 109-119 
    Details
    ISSN: 1432-1890
    Keywords: Time of inoculation ; Acacia holosericea ; Bradyrhizobium sp. ; Pisolithus tinctorius ; Competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The complex interactions that occur in systems with more than one type of symbiosis were studied using one isolate of Bradyrhizobium sp. and the ectomycorrhizal fungus Pisolithus tinctorius (Pers.) Coker and Couch inoculated on to the roots of Acacia holosericea A. Cunn. ex G. Don in vitro. After a single inoculation with Bradyrhizobium sp., bacteria typically entered the roots by forming infection threads in the root hair cells via the curling point of the root hair and/ or after intercellular penetration. Sheath formation and intercellular penetration were observed on Acacia roots after a single inoculation with Pisolithus tinctorius but no radial elongation of epidermal cells. Simultaneous inoculation with both microorganisms resulted in nodules and ectomycorrhiza on the root system, occasionally on the same lateral root. On lateral roots bearing nodules and ectomycorrhiza, the nodulation site was characterized by the presence of a nodule meristem and the absence of an infection thread; sheath formation and Hartig net development occurred regularly in the region of the roots adjacent to nodules. Prior inoculation with Bradyrhizobium sp. did not inhibit ectomycorrhizal colonization in root segments adjacent to nodules in which nodule meristems and infection threads were clearly present. Conversely, in ectomycorrhizae inoculated by bacteria, the nodule meristem and the infection thread were typically absent. These results show that simultaneous inoculation with both microorganisms inhibits infection thread development, thus conferring an advantage on fungal hyphae in the competition for infection sites. This suggests that fungal hyphae can modify directly and/or indirectly the recognition factors leading to nodule meristem initiation and infection thread development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203770
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Responses of Parkia biglobosa (Jacq.) Benth, Tamarindus indica L. and Zizyphus mauritiana Lam. to arbuscular mycorrhizal fungi in a phosphorus-deficient sandy soil (1998)
    Springer
    Biology and fertility of soils 26 (1998), S. 194-198 
    Details
    ISSN: 1432-0789
    Keywords: Key words Multipurpose fruit trees ; Arbuscular mycorrhizal fungi ; Mycorrhizal dependency ; Morphology of root hair ; Functional compatibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Responses of three multipurpose fruit tree species, Parkia biglobosa (Jacq.) Benth, Tamarindus indica L. and Zizyphus mauritiana Lam., to inoculation with five species of arbuscular mycorrhizal fungi, Acaulospora spinosa Walker and Trappe, Glomus mosseae (Nicol. and Gerd.) Gerd. and Trappe, Glomus intraradices Schenck and Smith, Glomus aggregatum Schenck and Smith emend. Koske and Glomus manihotis Howeler, Sieverding and Schenck, differed markedly with respect to functional compatibility. This was measured as root colonization, mycorrhizal dependence (MD) and phosphorus concentrations in shoots of plants. Root colonization of fruit trees by A. spinosa, G. aggregatum and G. manihotis was high and tree growth increased significantly as a consequence. G. intraradices also colonized well, but provided little growth benefit. G. mosseae colonized poorly and did not stimulate plant growth. The MD of P. biglobosa and T. indica was similar, reaching no more than 36%, while Z. mauritiana showed the highest MD values, reaching a maximum of 78%. The Z. mauritiana A. spinosa combination was the most responsive with respect to total biomass production; phosphorus (P) absorption probably contributed to this more than the absorption of sodium, potassium, magnesium or calcium. The density and length of root hairs were positively correlated with MD, suggesting that root hairs are not indicative of MD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050367
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Susceptibility of several sahelian Acacia to Meloidogyne javanica (Treub) Chitw. (1999)
    Springer
    Agroforestry systems 46 (1999), S. 123-130 
    Details
    ISSN: 1572-9680
    Keywords: Acacia spp. ; pathogenicity ; Rhizobium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Four Acacia species were tested for their susceptibility to the root-knot nematode, Meloidogyne javanica, commonly found in sahelian areas. Faidherbia albida and Acacia senegal were resistant to this nematode. On the contrary, A. raddiana, A. nilotica and A. mangium were susceptible. Among these three species, the growth of A. nilotica and A. mangium was inhibited by M. javanica but A. raddiana was tolerant. The rhizobial symbiosis with F. albida and A. senegal was stimulated by the nematode. The population build-up of the root-knot nematode induced by tree species in agroforestry systems is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006213117130
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...