High variation in the percentage of root length colonised by arbuscular mycorrhizal fungi among 139 lines representing the species subterranean clover ( Trifolium subterraneum )

2016 ◽  
Vol 98 ◽  
pp. 221-232 ◽  
Author(s):  
Megan H. Ryan ◽  
Daniel R. Kidd ◽  
Graeme A. Sandral ◽  
Zongjian Yang ◽  
Hans Lambers ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Root Length ◽  
Mycorrhizal Fungi ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Arbuscular Mycorrhizal

Arbuscular mycorrhizal fungi can decrease the uptake of uranium by subterranean clover grown at high levels of uranium in soil

2004 ◽  
Vol 130 (3) ◽  
pp. 427-436 ◽  
Author(s):  
Gervais Rufyikiri ◽  
Lien Huysmans ◽  
Jean Wannijn ◽  
May Van Hees ◽  
Corinne Leyval ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Subterranean Clover ◽  
Arbuscular Mycorrhizal

scholarly journals Arbuscular Mycorrhizal Fungi and Nutrition Determine the Outcome of Competition Between Lolium multiflorum and Trifolium subterraneum

2021 ◽  
Vol 12 ◽  
Author(s):  
Stephan Unger ◽  
Franziska M. Habermann ◽  
Katarina Schenke ◽  
Marjan Jongen
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Lolium Multiflorum ◽  
Trifolium Subterraneum ◽  
Arbuscular Mycorrhizal ◽  
N Fertilization ◽  
Competitive Balance ◽  
Plant Interactions ◽  
P Fertilization ◽  
The Cost

Arbuscular mycorrhizal fungi (AMF) may affect competitive plant interactions, which are considered a prevalent force in shaping plant communities. Aiming at understanding the role of AMF in the competition between two pasture species and its dependence on soil nutritional status, a pot experiment with mycorrhizal and non-mycorrhizal Lolium multiflorum and Trifolium subterraneum was conducted, with manipulation of species composition (five levels), and nitrogen (N)- and phosphorus (P)- fertilization (three levels). In the non-mycorrhizal state, interspecific competition did not play a major role. However, in the presence of AMF, Lolium was the strongest competitor, with this species being facilitated by Trifolium. While N-fertilization did not change the competitive balance, P-fertilization gave Lolium, a competitive advantage over Trifolium. The effect of AMF on the competitive outcome may be driven by differential C-P trade benefits, with Lolium modulating carbon investment in the mycorrhizal network and the arbuscule/vesicle ratio at the cost of Trifolium.

Performance and gene effects for root characters and micronutrient uptake in wheat inoculated with arbuscular mycorrhizal fungi and Azotobacter chroococcum

2007 ◽  
Vol 55 (3) ◽  
pp. 325-330 ◽  
Author(s):  
R. Singh ◽  
R. Behl ◽  
P. Jain ◽  
N. Narula ◽  
K. Singh
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Root Length ◽  
Mycorrhizal Fungi ◽  
Root Biomass ◽  
Root Length Density ◽  
Arbuscular Mycorrhizal ◽  
Azotobacter Chroococcum ◽  
Gene Effects ◽  
Low Input ◽  
Micronutrient Uptake

The present investigation was conducted to investigate the impact of bio-inoculants on the magnitude and direction of gene effects and mean performance for root length density, root biomass per plant, AMF colonization in roots and micronutrient uptake (Cu, Fe, Mn, Zn) in wheat under low input field conditions. The material for study comprised three wheat cultivars, WH 147 (low mineral input), WH 533 (drought-tolerant), Raj 3077 (high mineral input) and six generations (P 1 , P 2 , F 1 , F 2 , BC 1 and BC 2 ) of three crosses, namely WH 147 × WH 533, WH 533 × Raj 3077 and WH 147 × Raj 3077. The experiment was conducted in a randomized block design with three replications having three treatments, i.e. (i) control; (ii) inoculation with arbuscular mycorrhizal fungi (AMF, Glomus fasciculatum ); (iii) dual inoculation with AMF and Azotobacter chroococcum ( Azc ). The fertilizer doses in all three treatments were 80 kg N + 40 kg P + 18 kg ZnSO 4 ha −1 . Root length density, root biomass per plant, AMF colonization in roots and Zn and Mn content were found to be maximum after dual inoculation with AMF+ Azc in all three crosses. Joint scaling tests revealed that additive-dominance gene effects were mainly operative in governing the expression of root biomass, Cu and Zn content in all three crosses for all three treatments (i.e. control, AMF and AMF + Azc ). Pedigree selection in crosses WH 147 × WH 533 and WH 147 × Raj 3077 could be effective for breeding pure lines of wheat for sustainable agriculture (low input genotypes responsive to biofertilizers such as AMF and Azotobacter ).

Infectivity and effectiveness of vesicular arbuscular mycorrhizal fungi: effect of inoculum type

1981 ◽  
Vol 32 (4) ◽  
pp. 631 ◽  
Author(s):  
LK Abbott ◽  
AD Robson
Keyword(s):  
Root Length ◽  
Mycorrhizal Fungi ◽  
Early Stage ◽  
Phosphorus Uptake ◽  
Subterranean Clover ◽  
Arbuscular Mycorrhizal ◽  
Large Numbers ◽  
Infected Root ◽  
Vesicular Arbuscular ◽  
Inoculum Type

Plants, inoculated with four vesicular arbuscular mycorrhizal (VAM) fungi (Glomus fasciculatus, G. monospovus and two isolates of Acaulospova laevis), were grown from 4 to 16 weeks, and the development of infection and spores was followed. Infected roots from pot cultures of different ages were used to examine the effect of mycorrhiza development on the infectivity of each fungus. The effectiveness of each fungus was assessed by measuring its ability to increase the growth of subterranean clover on a phosphate-deficient soil. For all fungi, the percentage of root length infected increased rapidly up to 10 weeks after sowing, and thereafter it either increased only slightly or decreased. Infectivity of root inocula increased with increasing percentage of root length infected in the inoculum for all fungi, except where large numbers of mature spores (24/g infected root) had been produced by one isolate of A. laevis. The infectivity of inoculum roots from pots containing mature spores of this isolate declined rapidly, although it was not decreased by the onset of sporulation by A. laevis. For all fungi, irrespective of the inoculum used, the fresh weight of tops of subterranean clover grown on a phosphate-deficient soil was very closely correlated with the percentage of its root length infected at an early stage of plant growth. That is, the effectiveness of the species of fungi examined at increasing phosphorus uptake into plants was related to the infectivity of the inoculum used.

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