scholarly journals Defense-Related Transcript Accumulation in Phaseolus vulgaris L. Colonized by the Arbuscular Mycorrhizal Fungus Glomus intraradices Schenck & Smith

1996 ◽  
Vol 110 (2) ◽  
pp. 675-688 ◽  
Author(s):  
K. A. Blee ◽  
A. J. Anderson
Keyword(s):  
Phaseolus Vulgaris ◽  
Glomus Intraradices ◽  
Arbuscular Mycorrhizal Fungus ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Phaseolus Vulgaris L ◽  
Transcript Accumulation

GiFRD encodes a protein involved in anaerobic growth in the arbuscular mycorrhizal fungus Glomus intraradices

2012 ◽  
Vol 49 (4) ◽  
pp. 313-321 ◽  
Author(s):  
Kinga A. Sędzielewska ◽  
Katja Vetter ◽  
Rüdiger Bode ◽  
Keith Baronian ◽  
Roland Watzke ◽  
...  
Keyword(s):  
Glomus Intraradices ◽  
Arbuscular Mycorrhizal Fungus ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Anaerobic Growth

scholarly journals Identification of a cDNA from the Arbuscular Mycorrhizal Fungus Glomus intraradices that is Expressed During Mycorrhizal Symbiosis and Up-Regulated by N Fertilization

2002 ◽  
Vol 15 (4) ◽  
pp. 360-367 ◽  
Author(s):  
Juan M. Ruiz-Lozano ◽  
Carlos Collados ◽  
Rosa Porcel ◽  
Rosario Azcón ◽  
JoséM. Barea
Keyword(s):  
Gene Expression ◽  
Gene Product ◽  
Time Course ◽  
Glomus Intraradices ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
N Fertilization ◽  
Mycorrhizal Symbiosis ◽  
Transcript Accumulation ◽  
Reading Frame

A cDNA library was constructed with RNA from Glomus intraradices-colonized lettuce roots and used for differential screening. This allowed the identification of a cDNA (Gi-1) that was expressed only in mycorrhizal roots and was of fungal origin. The function of the gene product is unknown, because Gi-1 contained a complete open reading frame that was predicted to encode a protein of 157 amino acids which only showed little homology with glutamine synthetase from Helicobacter pylori. The time-course analysis of gene expression during the fungal life cycle showed that Gi-1 was expressed only during the mycorrhizal symbiosis and was not detected in dormant or germinating spores of G. intraradices. P fertilization did not significantly change the pattern of Gi-1 expression compared with that in the unfertilized treatment, whereas N fertilization (alone or in combination with P) considerably enhanced the Gi-1 transcript accumulation. This increase in gene expression correlated with plant N status and growth under such conditions. The possible role of the Gi-1 gene product in intermediary N metabolism of arbuscular mycorrhizal symbiosis is further discussed.

The arbuscular mycorrhizal fungus, Glomus intraradices , induces the accumulation of cyclohexenone derivatives in tobacco roots

Planta ◽  
1999 ◽  
Vol 207 (4) ◽  
pp. 620-623 ◽  
Author(s):  
Walter Maier ◽  
Jürgen Schmidt ◽  
Victor Wray ◽  
Michael Herbert Walter ◽  
Dieter Strack
Keyword(s):  
Glomus Intraradices ◽  
Arbuscular Mycorrhizal Fungus ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Tobacco Roots ◽  
Cyclohexenone Derivatives

scholarly journals Influence of Glomus intraradices on Black Foot Disease Caused by Cylindrocarpon macrodidymum on Vitis rupestris Under Controlled Conditions

Plant Disease ◽  
2006 ◽  
Vol 90 (12) ◽  
pp. 1481-1484 ◽  
Author(s):  
Elsa Petit ◽  
Walter Douglas Gubler
Keyword(s):  
Glomus Intraradices ◽  
Arbuscular Mycorrhizal Fungus ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Mycorrhizal Colonization ◽  
Vitis Rupestris ◽  
Controlled Conditions ◽  
Foot Disease ◽  
Black Foot ◽  
Black Foot Disease

We examined the influence of an arbuscular-mycorrhizal fungus, Glomus intraradices (INVAM CA 501), on black foot disease caused by the fungus Cylindrocarpon macrodidymum on Vitis rupestris cv. St. George under controlled conditions. Mycorrhizal or nonmycorrhizal grape rootings were inoculated with the pathogen. Eight months following inoculation with the pathogen, we evaluated disease severity, vine growth, and mycorrhizal colonization. Mycorrhizal plants developed significantly less leaf and root symptoms than nonmycorrhizal plants (P = 0.04 and P < 0.0001, respectively). Only nonmycorrhizal grape rootings inoculated with the pathogen had significantly less dry root and leaf weights compared with the noninoculated control (P = 0.0021 and P = 0.0017, respectively). Mycorrhizal colonization was high (48.3% for the noninfected control and 54.5% for plants infected with C. macrodidymum) and not significantly affected by inoculation with C. macrodidymum (P = 0.2256). Thus, V. rupestris preinoculated with G. intraradices were less susceptible to black foot disease than nonmycorrhizal plants. Results from this study suggest that preplant applications of G. intraradices may help prevent black foot disease in the nursery and in the vineyard.

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