Effects of organic and inorganic fertilisers and Paraburkholderia sp. SOS3 on growth and drought responses of the therapeutic-honey plant Leptospermum polygalifolium

Renata Grunennvaldt; Chanyarat Paungfoo-Lonhienne; Stephen Trueman; Marta Gallart

doi:10.1016/j.rhisph.2022.100471

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Effects of organic and inorganic fertilisers and Paraburkholderia sp. SOS3 on growth and drought responses of the therapeutic-honey plant Leptospermum polygalifolium

Journal article

Peer reviewed

Effects of organic and inorganic fertilisers and Paraburkholderia sp. SOS3 on growth and drought responses of the therapeutic-honey plant Leptospermum polygalifolium

Renata Grunennvaldt, Chanyarat Paungfoo-Lonhienne, Stephen Trueman and Marta Gallart

Rhizosphere, Vol.21, pp.1-8

2022

DOI: https://doi.org/10.1016/j.rhisph.2022.100471

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Abstract

Leptospermum

N fertilisation

Paraburkholderia

PGPR

Water stress

Plant growth-promoting rhizobacteria (PGPR) have gained increasing attention for their potential to enhance nitrogen (N) acquisition efficiency and alleviate biotic and abiotic stress. We conducted a two-stage experiment to investigate, firstly, synergistic effects of combining the plant growth-promoting rhizobacterium, Para-burkholderia sp. SOS3, with either urea (iN) or a combination of urea with poultry manure-based fertiliser (iNoN) on seedling growth of Leptospermum polygalifolium (Myrtaceae) over 133 days. This was followed, secondly, by a water-deficit trial over 14 days to test whether SOS3 inoculation and N fertilisation influenced water stress tolerance. We studied plant growth, plant N uptake, medium physicochemical properties, whole-plant cumulative transpiration (T p), transpiration efficiency (TE p) and carbon isotope discrimination (CID). Seedlings fertilised with iNoN had an over 5-fold increase in total biomass and 6-fold increase in N uptake compared with seedlings fertilised with iN, and this response was not affected by SOS3 inoculation. Inoculation with SOS3 significantly impacted water stress responses in water-stressed plants, with a reduction of 2–18% in T p and an increase of 4–8% in CID, although TE p was not affected by inoculation. Our results suggest that L. polygalifolium can acquire combinations of inorganic and organic N more efficiently than inorganic N alone and highlight that Para-burkholderia sp. SOS3 may reduce water use under water deficit conditions through shifts in gas exchange.

Details

Title: Effects of organic and inorganic fertilisers and Paraburkholderia sp. SOS3 on growth and drought responses of the therapeutic-honey plant Leptospermum polygalifolium
Authors: Renata Grunennvaldt (Author) - University of the Sunshine Coast, Queensland, GeneCology Research Centre - Legacy
Chanyarat Paungfoo-Lonhienne (Author) - Griffith University
Stephen Trueman (Author) - Griffith University
Marta Gallart (Author) - Griffith University
Publication details: Rhizosphere, Vol.21, pp.1-8
Publisher: Elsevier BV
DOI: 10.1016/j.rhisph.2022.100471
Organisation Unit: School of Science and Engineering - Legacy; School of Science, Technology and Engineering; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy
Language: English
Record Identifier: 99603206802621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Agronomy; Plant Sciences; Soil Science

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