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The role of arbuscular mycorrhizal fungi in establishment and water balance of tomato seedlings and sweet cherry cuttings in low phosphorous soil

conference contribution
posted on 2023-05-23, 11:08 authored by Mohamed, HA, Kara BarryKara Barry, Measham, PF
Extreme variability in water availability during the growing season makes sweet cherry fruit more prone to cracking. Therefore, experiments were designed to explore how mycorrhizal colonization of cherry roots may influence water regulation, as well as enhanced growth performance. Arbuscular mycorrhizal fungi (AMF) are obligate mutualists from the Order Glomales and most fruit trees establish associations with AMF naturally when transplanted to the field, particularly in low phosphorous conditions. Although plants benefit from this symbiotic relationship through increased nutrient uptake especially phosphate, management practices influence the presence of mycorrhizal colonization in the field. This project has investigated the early growth rate and establishment of cherry (and tomato plants as a model system) inoculated with Rhizophagus irregularis (syn. Glomus intraradices). After one month of growth, the number of leaves of mycorrhizal tomato seedlings was significantly increased and the height was approximately doubled in response to inoculation compared with non-inoculated tomatoes. In addition, a significant effect of AM fungi on cutting survival was observed, where 65% of inoculated cherry rootstocks survived after two months from striking, compared to 45% of non-mycorrhizal cherries. The effect of AMF on water uptake is currently being investigated in both sweet cherries and tomatoes to determine how colonization affects water uptake and photosynthesis during periods of drought and excess water conditions.

Funding

Horticulture Innovation Australia

History

Publication title

Acta Horticulturae

Volume

1112

Editors

RL Snyder, S Ortega-Farias, WR Carlile, M Raviv, M Nichols, B Clothier, I Goodwin, R Gentile

Pagination

109-115

ISSN

0567-7572

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

International Society for Horticultural Science

Place of publication

Belgium

Event title

XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes: International Symposia on water, Eco-Efficiency and Transformation of Organic Waste in Horticultural Production

Event Venue

Brisbane, Australia

Date of Event (Start Date)

2014-08-17

Date of Event (End Date)

2014-08-22

Rights statement

Copyright 2016 ISHS Acta Horticulturae

Repository Status

  • Restricted

Socio-economic Objectives

Stone fruit (excl. avocado)