Gamma irradiation induces sterility or seedlessness in black wattle (Acacia mearnsii)

Beck, S.L.; Fossey, Annabel

doi:10.15258/sst.2007.35.2.10

Cited by 3 publications

(3 citation statements)

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“…It is therefore fundamental to determine the trade-off between the commercial value and related environmental problems. To avoid the undesirable impacts without interfering with industry purposes, the implementation of sterile lineages of acacias is under investigation (Beck and Fossey 2007;Beck-Pay 2013). We also suggest that forest managers, industries or land owners that benefit from the cultivation of exotic acacias should be economically responsible for the problems derived from their plantations.…”

Section: Future Research and Perspectivesmentioning

confidence: 99%

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Souza‐Alonso

Rodríguez

González

et al. 2017

Annals of Forest Science

101

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Key message The above-and belowground impacts due to Acacia invasions have been described in detail over the last 25 years. Future research should focus on the early detection and prevention of new Acacia introductions and on a cost-effective and sustainable management of the novel ecosystems resulting from invasions.• Context Invasive alien plants (IAPs) strongly alter ecosystems reducing biodiversity, modifying ecosystem services and increasing negative impacts at social and economic level. Among invasive taxa, Acacia is a highly problematic genus worldwide. In fact, almost 500 papers have been published on several aspects of Acacia invasions for the last 25 years.• Aims We aim at reviewing the current knowledge on the consequences of the invasion by Acacia genus in Mediterranean ecosystems. We also collect and propose different approaches for the management and recovery of invaded areas and suggest future perspectives on Acacia research. • Methods We compile, summarise and discuss recent findings on physicochemical, ecological, microbiological and socioeconomic aspects of invasion related to Australian acacias (Acacia dealbata, Acacia longifolia, Acacia mearnsii, Acacia saligna and Acacia melanoxylon) focusing on Mediterranean areas.• Results Acacia invasion generally entails soil physicochemical alterations and changes in microbial function and structure. Consequences such as the decreased biodiversity, altered ecosystem structure, larger seed banks dominated by invasive species, new biotrophic relationships or alterations in water availability and fire regimes suggest that acacias are locally creating novel ecosystems.• Conclusions Forecasting invasions, modelling and managing ecosystems dominated by acacias are challenging tasks that should be addressed in the future, since climatic conditions and intensification in land uses are increasing the likelihood of Acacia invasions in Mediterranean areas. Unsuccessful management actions suggest that restoration should be meticulously monitored, but the magnitude of invasion or the inconsistency of economic investment indicate that eradication is often unfeasible. Alternatively, novel integrative and cost-effective solutions including the collaboration of society, politicians and stakeholders are necessary to prevent new introductions and achieve sustainable control of acacias. There is a growing interest in applied research on the valorisation or novel uses for acacias and their residues that result in economic benefits.

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Section: Future Research and Perspectivesmentioning

confidence: 99%

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Souza‐Alonso

Rodríguez

González

et al. 2017

Annals of Forest Science

101

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“…Flowering in plants grown from irradiated seed can be significantly reduced (Beck et al. , 2006; Beck & Fossey, 2007), and tetraploid A. mearnsii plants have been developed (Beck et al. , 2003a,b,c, 2005; Mathura et al.…”

Section: Management Tactics and Practicesmentioning

confidence: 99%

“…The invasive potential of commercially farmed Acacia species could be substantially reduced by inducing sterility through gamma radiation of seed or the production of triploids through chromosome doubling techniques. Flowering in plants grown from irradiated seed can be significantly reduced Beck & Fossey, 2007), and tetraploid A. mearnsii plants have been developed (Beck et al, 2003a(Beck et al, ,b,c, 2005Mathura et al, 2006;Fossey et al, 2009). Controlled crosses between tetraploids and diploids are being made and their progeny tested.…”

Section: Development Of Sterile Cultivarsmentioning

confidence: 99%

National‐scale strategic approaches for managing introduced plants: insights from Australian acacias in South Africa

Wilgen¹,

Dyer²,

Hoffmann³

et al. 2011

Diversity and Distributions

163

184

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Aim A range of approaches and philosophies underpin national‐level strategies for managing invasive alien plants. This study presents a strategy for the management of taxa that both have value and do harm. Location South Africa. Methods Insights were derived from examining Australian Acacia species in South Africa (c. 70 species introduced, mostly > 150 years ago; some have commercial and other values; 14 species are invasive, causing substantial ecological and economic damage). We consider options for combining available tactics and management practices. We defined (1) categories of species based on invaded area (a surrogate for impact) and the value of benefits generated and (2) management regions based on habitat suitability and degree of invasion. For each category and region, we identified strategic goals and proposed the combinations of management practices to move the system in the desired direction. Results We identified six strategic goals that in combination would apply to eight species categories. We further identified 14 management practices that could be strategically combined to achieve these goals for each category in five discrete regions. When used in appropriate combinations, the prospect of achieving the strategic goal will be maximized. As the outcomes of management cannot be accurately predicted, management must be adaptive, requiring continuous monitoring and assessment, and realignment of goals if necessary. Main conclusions Invasive Australian Acacia species in South Africa continue to spread and cause undesirable impacts, despite a considerable investment into management. This is because the various practices have historically been uncoordinated in what can be best described as a strategy of hope. Our proposed strategy offers the best possible chance of achieving goals, and it is the first to address invasive alien species that have both positive value and negative impacts.

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Acacia mearnsiiindustry overview: current status, key research and development issues

Chan¹,

Day²,

Feely³

et al. 2015

Southern Forests: a Journal of Forest Science

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Gamma irradiation induces sterility or seedlessness in black wattle (Acacia mearnsii)

Cited by 3 publications

References 0 publications

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

National‐scale strategic approaches for managing introduced plants: insights from Australian acacias in South Africa

Acacia mearnsiiindustry overview: current status, key research and development issues

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