Origins of the rare Australian daisy Erigeron conyzoides and its implications for biological control research and conservation management

Australian Journal of Botany, Journal Year: 2025, Volume and Issue: 73(1)

Published: Jan. 1, 2025

Context Confidence in risk analyses for weed biological control (biocontrol) agents is underpinned by knowledge of the phylogenetic associations between target and off-target plant species, with an emphasis on native taxa that co-occur its introduced range. The origins species are also considered when assessing potential adverse effects releasing biocontrol into environment. Erigeron bonariensis L. (flaxleaf fleabane), to South America, a major cropping North Europe, Australia. Phylogenomic analysis weed's tribe, Astereae, program has put question existence Australian fleabanes.Aims We aimed resolve establishment means supposed Australia testing morphological other at global scale.Methods Target-sequence capture data were combined traditional taxonomy.Key results rediscovered closest presumed relative flaxleaf fleabane, rare declining E. conyzoides F.Muell. (daisy during field work Victoria, Molecular morphology indicated acer from northern hemisphere not distinct.Conclusions very likely distinct endemic but rather disjunct population acer.Implications This finding improves confidence host-specificity candidate fleabane Australia, because we argue related truly much more distantly than previously thought.

Language: Английский

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Phylogenetics informs host range testing for Acacia auriculiformis in Florida

Advances in Weed Science, Journal Year: 2025, Volume and Issue: 43

Published: Jan. 1, 2025

Language: Английский

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Elachanthus, Isoetopsis and Kippistia are nested in the genus Minuria (Asteraceae: Astereae)

Australian Systematic Botany, Journal Year: 2024, Volume and Issue: 37(4)

Published: July 17, 2024

While conducting phylogenetic analyses of sequence-capture data Australian members Asteraceae tribe Astereae, we found that Elachanthus pusillus F.Muell., Isoetopsis graminifolia Turcz. and Kippistia suaedifolia F.Muell. formed a clade with Minuria. We, therefore, conducted an analysis focused on this clade, but replicate samples the three smaller genera, confirmed our results. had been synonymised under Minuria between 1876 1980, when it was reinstated. not previously suggested to be part Minuria, and, indeed, considered so morphologically divergent even its tribal affiliations were long controversial. However, closer examination, are strikingly similar especially in cypsela pappus morphology. The evolution both genera from common ancestor appears plausible light their overall similarity annual species genus such as M. annua, multiple uniform rows herbaceous phyllaries scarious margins, scales v. tendency form pappi scale-like bases, female outer male inner florets, indumentum shared some We propose following new combinations Minuria: pusilla, glabra graminifolia.

Language: Английский

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One size does not fit all: Classical weed biological control across continents

Biological Control, Journal Year: 2024, Volume and Issue: unknown, P. 105661 - 105661

Published: Nov. 1, 2024

Language: Английский

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