Record ID No. |
5541 |
Author(s) |
Watts-Williams S. J.*, Jewell N., Brien C., Berger B., Garnett T. and Cavagnaro T. R. , 2019 |
Affiliation |
*The School of Agriculture, Food and Wine, and The Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia |
Title |
Using High-Throughput Phenotyping to Explore Growth Responses to Mycorrhizal Fungi and Zinc in Three Plant Species |
Source. Vol.(no):Page |
Plant Phenomics. 2019: doi: 10.34133/2019/5893953. |
Categories |
|
Subjects |
Methodology |
Sub-subjects |
Plant growth promoting fungi |
Host |
Hordeum vulgare, Solanum lycopersicum, Medicago truncatula |
Organism |
Rhizophagus irregularis |
Country |
Australia |
Abstracts |
There are many reported benefits to plants of arbuscular mycorrhizal fungi (AMF), including positive plant biomass responses; however, AMF can also induce biomass depressions in plants, and this response receives little attention in the literature. High-throughput phenotyping (HTP) technology permits repeated measures of an individual plant’s aboveground biomass. The effect on AMF inoculation on the shoot biomass of three contrasting plant species: a vegetable crop (tomato), a cereal crop (barley), and a pasture legume (Medicago), was observed. The interaction of mycorrhizal growth responses with plant-available soil zinc (Zn) and phosphorus (P) concentrations was also considered. The appearance of a depression in shoot biomass due to inoculation with AMF occurred at different times for each plant species; depressions appeared earliest in tomato, then Medicago, and then barley. The usually positive-responding Medicago plants were not responsive at the high level of soil available P used. Mycorrhizal growth responsiveness in all three species was also highly interactive with soil Zn supply; tomato growth responded negatively to AMF inoculation in all soil Zn treatments except the toxic soil Zn treatment, where it responded positively. The results illustrate how context-dependent mycorrhizal growth responses are and the value of HTP approaches to exploring the complexity of mycorrhizal responses. |