Pollen morphology of the Myrtaceae. Part 4: tribes Kanieae, Myrteae and Tristanieae

Thornhill, Andrew H.; Hope, Geoff; Craven, Lyn A.; Crisp, Michael D.

doi:10.1071/bt11177

Cited by 25 publications

(18 citation statements)

References 16 publications

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“…Pollen was identified by reference to the author’s modern pollen reference collection, published manuals [ 41 – 45 ], published studies of individual families, e.g. [ 33 , 46 , 47 ], and the Australasian Pollen and Spore Atlas (available at apsa.anu.edu.au ). Pollen was counted on transects until a pollen sum of 500–600 was achieved.…”

Section: Methodsmentioning

confidence: 99%

Pollen analysis of Australian honey

et al. 2018

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Pollen analysis is widely used to verify the geographic origin of honeys, but has never been employed in Australia. In this study, we analysed the pollen content of 173 unblended honey samples sourced from most of the commercial honey producing regions in southern Australia. Southern Australian vegetation is dominated by Eucalyptus (Myrtaceae) forests and, as expected, most Australian honeys are palynologically dominated by Eucalyptus, while other important components include Myrtaceae taxa such as Corymbia/Angophora and the tribe Leptospermeae; plus Brassicaceae, Echium, Macadamia, and Acacia. An important feature of the honeys is the number of Myrtaceae pollen morphotypes per sample, which is generally high (mean = 4.6) compared to honeys produced outside of Australia, including Eucalyptus honeys produced in the Mediterranean region, and honeys produced in South America, which has its own rich indigenous Myrtaceae flora. In the latter regions, the number of Myrtaceae morphotypes is apparently generally ≤2. A high number of Myrtaceae morphotypes may be a feasible criterion for authenticating the origin of Australian honeys, since most Australian honey is produced by honey bees mainly working indigenous floral resources. Myrtaceae morphotype diversity is a convenient melissopalynological measure that could be applied even where detailed knowledge of the pollen morphology of the many component genera and species is absent. Palynological criteria developed in Europe for authenticating Eucalyptus honeys should not be relied upon for Australian honeys, since those criteria are not based on samples of Australian honey.

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Section: Methodsmentioning

confidence: 99%

Pollen analysis of Australian honey

et al. 2018

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“…To calibrate the relaxed molecular clock, we used eight fossil pollen and four macrofossil calibrations that had been identified as optimal on the basis of phylogenetic placement (Thornhill and Crisp, 2012;Thornhill et al, 2012d), extant pollen morphology (Thornhill et al, 2012a(Thornhill et al, , 2012b(Thornhill et al, , 2012c and oldest fossil age (Thornhill and Macphail, 2012) (Supplementary Table S2). The root node of the tree representing the divergence between Myrtaceae and its sister family Vochysiaceae was calibrated using a crown age estimate of Myrtales obtained by Wang et al (2009), who conducted a thorough molecular dating analysis of the rosid clade.…”

Section: Fossil Calibrationsmentioning

confidence: 99%

Interpreting the modern distribution of Myrtaceae using a dated molecular phylogeny

Thornhill

Külheim

et al. 2015

Molecular Phylogenetics and Evolution

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“…Additionally, our analysis corroborates that Corymbia gummifera is paraphyletic in respect to Angophora . A previous phylogenetic analysis using certain cp genes (ITS, matK and ndhF ) of Myrtaceae species showed that Eucalyptus , Syzygium , Eugenia and Myrciaria (synonym of Plinia ) form a distinct clade that is consistent with characteristics of the pollen ( Thornhill et al. , 2012 ).…”

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confidence: 98%

Complete sequence and comparative analysis of the chloroplast genome of Plinia trunciflora

et al. 2017

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Plinia trunciflora is a Brazilian native fruit tree from the Myrtaceae family, also known as jaboticaba. This species has great potential by its fruit production. Due to the high content of essential oils in their leaves and of anthocyanins in the fruits, there is also an increasing interest by the pharmaceutical industry. Nevertheless, there are few studies focusing on its molecular biology and genetic characterization. We herein report the complete chloroplast (cp) genome of P. trunciflora using high-throughput sequencing and compare it to other previously sequenced Myrtaceae genomes. The cp genome of P. trunciflora is 159,512 bp in size, comprising inverted repeats of 26,414 bp and single-copy regions of 88,097 bp (LSC) and 18,587 bp (SSC). The genome contains 111 single-copy genes (77 protein-coding, 30 tRNA and four rRNA genes). Phylogenetic analysis using 57 cp protein-coding genes demonstrated that P. trunciflora, Eugenia uniflora and Acca sellowiana form a cluster with closer relationship to Syzygium cumini than with Eucalyptus. The complete cp sequence reported here can be used in evolutionary and population genetics studies, contributing to resolve the complex taxonomy of this species and fill the gap in genetic characterization.

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Pollen morphology of the Myrtaceae. Part 4: tribes Kanieae, Myrteae and Tristanieae

Cited by 25 publications

References 16 publications

Pollen analysis of Australian honey

Pollen analysis of Australian honey

Interpreting the modern distribution of Myrtaceae using a dated molecular phylogeny

Complete sequence and comparative analysis of the chloroplast genome of Plinia trunciflora

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