In several growth chamber studies, both P absorption and mycorrhizal colonization of plants grown in soil left undisturbed after removal of the shoots of the previous crop were higher relative to plants in disturbed soil. However, in one of these studies the soil was disturbed only once instead of after each of three growth cycles, and this resulted in identical colonization in the undisturbed and disturbed treatments. The present study was conducted to systematically investigate the effect of varying the frequency and timing of soil disturbance on mycorrhizal colonization. Maize (Zea mays L.) was grown for four 3-week cycles in pots which initially contained disturbed soil. Five soil disturbance treatments were used to assess the impact of the frequency with which soil is disturbed and the impact of the timing of the disturbance. The frequency of soil disturbance had major effects on mycorrhizal colonization, while the timing of soil disturbance was more related to the reduction in shoot P absorption resulting from disturbance. These results suggest that the extraradical mycelium plays a key role in the mechanism by which soil disturbance reduces shoot P absorption.
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Abbott LK, Robson AD, De Boer G (1984) The effect of phosphorus on the formation of hyphae in soil by the vesiculararbuscular mycorrhizal fungus, Glomus fasciculatum. New Phytol 97:437–446
Brundrett MC, Piché Y, Peterson RL (1984) A new method for observing the morphology of vesicular-arbuscular mycorrhizae. Can J Bot 62:2128–2134
Evans DG, Miller MH (1988) Vesicular-arbuscular mycorrhizas and the soil-induced reduction of nutrient absorption in maize. I. Causal relations. New Phytol 110:67–74
Evans DG, Miller MH (1990) The role of the external mycelial network in the effect of soil disturbance upon vesicular-arbuscular mycorrhizal colonization of maize. New Phytol 114:65–71
Fairchild GL, Miller MH (1988) Vesicular-arbuscular mycorrhizas and the soil-induced reduction of nutrient absorption in maize. II. Development of the effect. New Phytol 110:75–84
Fairchild GL, Miller MH (1990) Vesicular-arbuscular mycorrhizas and the soil-induced reduction of nutrient absorption in maize. III. Influence of P amendments to soil. New Phytol 114:641–650
Jasper DA, Abbott LK, Robson AD (1989a) Soil disturbance reduces the infectivity of external hyphae of vesicular-arbuscular mycorrhizal fungi. New Phytol 112:93–99
Jasper DA, Abbott LK, Robson AD (1989b) Hyphae of a vesicular-arbuscular mycorrhizal fungus maintain infectivity in a dry soil, except where the soil is disturbed. New Phytol 112:101–107
McGonigle TP, Evans DG, Miller MH (1990a) Effect of degree of soil disturbance on mycorrhizal colonization and phosphorus absorption by maize in growth chamber and field experiments. New Phytol 116:629–636
McGonigle TP, Miller MH, Evans DG, Fairchild GF, Swan JA (1990b) A new method which gives an objective measure of colonization of roots by vesicular-arbuscular mycorrhizal fungi. New Phytol 115:495–501
Miller RM, Jastrow JD (1992) Extraradical hyphal development of vesicular-arbuscular mycorrhizal fungi in a chronosequence of prairie restorations. In: Read DJ, Lewis DH, Fitter AH, Alexander IJ (eds) Mycorrhizas in ecosystems. CAB International, Oxford, pp 171–176
Miller MH, McGonigle TP (1992) Soil disturbance and the effectiveness of arbuscular mycorrhizas in an agricultural ecosystem. In: Read DJ, Lewis DH, Fitter AH, Alexander IJ (eds) Mycorrhizas in ecosystems. CAB International, Oxford, pp 156–163
O'Halloran IP, Miller MH, Arnold G (1986) Absorption of P by corn (Zea mays L.) as influenced by soil disturbance. Can J Soil Sci 66:287–302
Thomas RL, Sheard RW, Moyer JR (1967) Comparison of conventional and automated procedures for nitrogen, phosphorus, and potassium analysis of plant material using a single digestion. Agron J 59:240–243
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McGonigle, T.P., Miller, M.H. Responses of mycorrhizae and shoot phosphorus of maize to the frequency and timing of soil disturbance. Mycorrhiza 4, 63–68 (1993). https://doi.org/10.1007/BF00204060
- Arbuscular mycorrhizae
- Vesicular-arbuscular mycorrhizae (VAM)
- Soil disturbance
- Hyphal length