Australian<i>Acacia</i>Species Around the World: Historical, Social, Evolutionary and Ecological Insights into One of the Planet’s Most Widespread Plant Genera

Richardson, David M.; Marchante, Elizabete; Le Roux, Johannes J.

doi:10.1079/9781800622197.0001

Wattles 2023

DOI: 10.1079/9781800622197.0001

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AustralianAcaciaSpecies Around the World: Historical, Social, Evolutionary and Ecological Insights into One of the Planet’s Most Widespread Plant Genera

David M. Richardson,

Elizabete Marchante,

Johannes J. Le Roux

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Cited by 3 publications

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The seeds of invasion: a comparison of endophytic seed bacteria of Acacia longifolia between its native and invasive ranges

Condessa,

Jesus,

Máguas

et al. 2024

Symbiosis

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Acacia longifolia is an aggressive invader in Mediterranean-type ecosystems severely impacting biodiversity and ecosystem functions. The species’ invasiveness has been linked to its ability to thrive in nutrient poor soils, high seed production, and quick establishment after fire. In this study, we identify and compare the bacterial endophytes of A. longifolia seeds collected from populations in the species’ native (Australia) and invasive (Portugal) ranges. For this, we characterised the morphology (length, width, and weight) of seeds from two sites in each range and isolated and cultivated bacteria from seeds. DNA fingerprinting and cluster analyses revealed slightly higher, and distinct, bacterial diversity associated with seeds collected from native range populations in comparison to those collected from invasive populations. Sequencing of the 16S rDNA gene identified 119 bacterial isolates from 15 genera, with Curtobacterium strains being common in both ranges. Several differences in bacterial genera were found among ranges and sites: Dermacoccus, Frigoribacterium, Kocuria, Pantoea and Phyllobacterium taxa were each unique to seeds from the native populations, while Brevundimonas, Microbacterium, Rhizobium and Sphingomonas taxa were only found in the invasive seeds. The genus Paraburkholderia occurred in all invasive-range seeds but was not isolated from the native-range. Bacillus and Paenibacillus co-occurred in seeds collected from all invaded sites, but the simultaneous presence of both taxa was not found in native-range seeds. We propose that the bacterial endophytes present in invasive-range seeds may be important players for the invasiveness of A. longifolia, due to their role as plant growth promoters, providing extra capabilities helping acacia expansion.

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The seeds of invasion: a comparison of endophytic seed bacteria of Acacia longifolia between its native and invasive ranges

Condessa,

Jesus,

Máguas

et al. 2024

Symbiosis

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Galling by Trichilogaster sp. suppresses the growth of Acacia auriculiformis saplings

Sanderson,

Zonneveld,

Purcell

et al. 2024

Biological Control

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Quantifying the spatial impact of an invasive Acacia on ecosystem functioning using remote sensing

Große-Stoltenberg,

Werner,

Hellmann

et al. 2025

Ecological Indicators

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AustralianAcaciaSpecies Around the World: Historical, Social, Evolutionary and Ecological Insights into One of the Planet’s Most Widespread Plant Genera

Cited by 3 publications

References 123 publications

The seeds of invasion: a comparison of endophytic seed bacteria of Acacia longifolia between its native and invasive ranges

The seeds of invasion: a comparison of endophytic seed bacteria of Acacia longifolia between its native and invasive ranges

Galling by Trichilogaster sp. suppresses the growth of Acacia auriculiformis saplings

Quantifying the spatial impact of an invasive Acacia on ecosystem functioning using remote sensing

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