Record ID No. |
3425 |
Author(s) |
Watts-Williams, S.J., Cavagnaro, T.R. , 2012 |
Affiliation |
School of Biological Sciences, Monash University, Melbourne, VIC 3800, Australia, Email; timothy.cavagnaro@monash.edu |
Title |
Arbuscular mycorrhizas modify tomato responses to soil zinc and phosphorus addition |
Source. Vol.(no):Page |
Biology and Fertility of Soils, 48 (3): 285-294p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Mycorrhizal efficiency |
Host |
Solanum lycopersicum |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
Australia |
Abstracts |
Arbuscular mycorrhizas (AM) play an important role in plant P and Zn nutrition; however, relatively few studies have directly investigated the interactive effects of these nutrients on plants. Therefore, we undertook a glasshouse experiment to study the effects of Zn and P on AM formation and functioning. A mycorrhiza defective tomato mutant (rmc) and its mycorrhizal wild-type progenitor (76R) were used in this experiment. Plants were grown in soil amended with five Zn concentrations, ranging from deficient to toxic, and two levels of P addition. The addition of Zn and P to the soil over a range of concentrations had profound effects on plant growth and nutrition and mycorrhizal colonization. Mycorrhizal benefits were the greatest when plants were grown under low soil P and Zn. Furthermore, the effect of soil Zn supply on plant growth, nutrition, and AM colonization was strongly influenced by the concentration of P in the soil. Thus, studies of AM and Zn (or other nutrients of interest) should take into account the impact of soil P concentration on the role of AM in plant Zn acquisition, under both deficient and toxic soil Zn concentrations. |