Evidence for both long-distance dispersal and isolation in the Southern Oceans: molecular phylogeny of <i>Sophora</i> sect <i>Edwardsia</i> (Fabaceae)

Shepherd, Lara D.; Heenan, P. B.

doi:10.1080/0028825x.2017.1353527

Cited by 27 publications

(9 citation statements)

References 35 publications

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“…Previous attempts have been made to reintegrate the species on the island, but the islanders have rejected the trees because they are hybrids, have no certification and do not look like the ancestral specimen. Due to the small number of individuals in existence, the genetic analyzes that have been carried out have not focused on differentiating toromiro from its hybrids [ 7 , 15 , 16 ] and have used low-resolution techniques with a single molecular marker such as trnH-GUG/psbA [ 17 ] or ITS [ 18 ]. Therefore, it was decided to carry a genetic study to elucidate the current situation of the existing S. toromiro species in the National Botanic Garden of Viña del Mar, and to obtain data to generate a method to determine which trees are offspring of the last Rapa Nui individual and which trees are hybrids, in order to select a population to carry out a plan for the conservation and reintroduction of seedlings of the plants classified as ancestral.…”

Section: Introductionmentioning

confidence: 99%

Generation of Chloroplast Molecular Markers to Differentiate Sophora toromiro and Its Hybrids as a First Approach to Its Reintroduction in Rapa Nui (Easter Island)

Pezoa

Villacreses

Rubilar

et al. 2021

Plants

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Sophora toromiro is an endemic tree of Rapa Nui with religious and cultural relevance that despite being extinct in the wild, still persists in botanical gardens and private collections around the world. The authenticity of some toromiro trees has been questioned because the similarities among hybrid lines leads to misclassification of the species. The conservation program of toromiro has the objective of its reinsertion into Rapa Nui, but it requires the exact genotyping and certification of the selected plants in order to efficiently reintroduce the species. In this study, we present for the first time the complete chloroplast genome of S. toromiro and four other Sophora specimens, which were sequenced de-novo and assembled after mapping the raw reads to a chloroplast database. The length of the chloroplast genomes ranges from 154,239 to 154,473 bp. A total of 130–143 simple sequence repeats (SSR) loci and 577 single nucleotide polymorphisms (SNPs) were identified.

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Section: Introductionmentioning

confidence: 99%

Generation of Chloroplast Molecular Markers to Differentiate Sophora toromiro and Its Hybrids as a First Approach to Its Reintroduction in Rapa Nui (Easter Island)

Pezoa

Villacreses

Rubilar

et al. 2021

Plants

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“…Edwardsia Salisb. (Sophoreae), which are small trees distributed throughout New Zealand and temperate maritime regions(Shepherd & Heenan, 2017). Indeed, New Zealand is something of an interesting case study on the effects of climate on the recruitment of legumes to biomes.…”

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confidence: 99%

Evolution and biogeography of actinorhizal plants and legumes: A comparison

Ardley

Sprent

2021

Journal of Ecology

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1. The symbiosis between plants and nitrogen-fixing bacteria is widespread among legumes and actinorhizal plants within the nitrogen-fixing root nodule (NFN) clade. However, there are major differences, as well as similarities, in the symbioses between actinorhizal plants and Frankia and those of legumes and their associated rhizobia. 2. This review provides an overview of NFN symbioses. We outline the evolution and biogeography of actinorhizal plants and legumes and compare and contrast their microsymbionts and symbiotic processes. 3. Within the NFN clade, a far greater number of nodulated legumes exists, compared with actinorhizal plants, and legumes have a much wider biogeographical distribution. There are genetic and physiological differences between free-living diazotrophic Frankia and the phylogenetically diverse rhizobia, most strains of which are unable to fix N 2 ex planta. Actinorhizal nodules are modified lateral roots with a central vascular system, whereas legume nodules are stem-like organs with peripheral vascular systems. Most legumes contain their microsymbionts within symbiosomes, rather than the infection threads found in actinorhizal nodule cells. Legumes have greater control of their microsymbionts, and those within the Inverted Repeat Lacking Clade impose terminal differentiation on their bacteroids. Legumes also have effective processes for autoregulation of nodulation and downregulation of N 2 fixation in response to high levels of soil N. These features of the legume-rhizobia symbiosis have led to increased efficiencies in N 2 fixation. 4. Synthesis. We suggest that these characteristic features of the legume-rhizobia symbiosis, specifically legumes' greater flexibility in the choice of microsymbiont partner and the evolution of increased efficiencies in N 2 fixation, are factors that can explain why the majority of species within the Leguminosae have retained the ability to nodulate and how this has contributed to their evolutionary success. K E Y W O R D S biogeography and macroecology, biological flora, dispersal, evolutionary ecology, global change ecology, plant development and life-history traits, plant-climate interactions | 3

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“…Although taxonomy and systematics have for some time been the journal's bread and butter, recent issues have encompassed a satisfying range of other disciplines, including biochemistry, plant physiology, ecology, and palaeontology. It is also pleasing to see authors submitting phylogeographic studies of international scope (Shepherd and Heenan 2017); as well as complex papers integrating multiple dimensions of organism biology (Sultan et al 2018), and tackling major questions about the origins of south temperate biotas (Heenan and McGlone 2019).…”

Section: Editorialmentioning

confidence: 99%

Editorial

Lusk

2019

New Zealand Journal of Botany

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Evidence for both long-distance dispersal and isolation in the Southern Oceans: molecular phylogeny of Sophora sect Edwardsia (Fabaceae)

Cited by 27 publications

References 35 publications

Generation of Chloroplast Molecular Markers to Differentiate Sophora toromiro and Its Hybrids as a First Approach to Its Reintroduction in Rapa Nui (Easter Island)

Generation of Chloroplast Molecular Markers to Differentiate Sophora toromiro and Its Hybrids as a First Approach to Its Reintroduction in Rapa Nui (Easter Island)

Evolution and biogeography of actinorhizal plants and legumes: A comparison

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