Phylogeny and systematics of the Lactucinae (Asteraceae) focusing on their SW Asian centre of diversity

Güzel, Murat Erdem; Çoşkunçelebi, Kamil; Kilian, Norbert; Makbul, Serdar; Gültepe, Mutlu

doi:10.1007/s00606-020-01719-y

Cited by 10 publications

(23 citation statements)

References 36 publications

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“…The systematic positions of species in Clade V were both resolved within Lactuca lineages in our plastome and ITS trees with different sister clades. In Güzel et al (2021), Clade V was part of Lactuca in ITS tree, but one of the Asian Melanoseris clades (not included in this study) was resolved as its sister group in the plastid tree. Therefore, these species should be retained in Lactuca.…”

Section: Phylogeny Of Lactucamentioning

confidence: 96%

“…Jones et al (2018) studied Northern Hemisphere disjunctions of Lactuca with a focus on the allopolyploid group endemic to America, using nuclear ribosomal DNA (ETS and ITS), a lowcopy nuclear marker (A44) and five non-coding plastid markers. The phylogeny and systematics of the Lactucinae in SW Asia were analyzed and discussed based on ITS and five plastid regions, although the Lactucinae branch had many polytomies (Güzel et al, 2021). Phylogenetic relationships within Lactuca (~66 species) and the circumscription of Lactuca among its related genera were so far not well-resolved because of polytomies in the phylogenetic trees (Wang et al, 2013;Kilian et al, 2017b;Güzel et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Lactucinae taxa have been considered as complex and difficult to classify due to variable morphological characteristics and uncertain limitations among genera. In the last decade, the phylogenetic, molecular dating, and biogeographic analyses of Lactucinae at the subtribe level, based on non-coding nuclear marker [A44, internal transcribed spacer (ITS), external transcribed spacer (ETS)] and plastid DNA regions, revealed the general relationships and divergence among Lactuca and its allied genera ( Wang et al., 2013 ; Kilian et al., 2017a ; Kilian et al., 2017b ; Wei et al., 2017 ; Güzel et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…The phylogeny and systematics of the Lactucinae in SW Asia were analyzed and discussed based on ITS and five plastid regions, although the Lactucinae branch had many polytomies ( Güzel et al., 2021 ). Phylogenetic relationships within Lactuca (~66 species) and the circumscription of Lactuca among its related genera were so far not well-resolved because of polytomies in the phylogenetic trees ( Wang et al., 2013 ; Kilian et al., 2017b ; Güzel et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

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Plastome-based phylogeny and biogeography of Lactuca L. (Asteraceae) support revised lettuce gene pool categories

Chu

Xu²,

Lu³

et al. 2022

Front. Plant Sci.

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This study generated and analyzed complete plastome and internal transcribed spacer (ITS) data of 46 Lactuca species, 13 African endemic (AE) Lactuca species, and 15 species from eight related genera in Lactucinae. The new plastome and nuclear ITS sequences were then used to reconstruct the phylogenetic relationships of Lactuca species. The whole-plastome data were used to estimate divergence time and ancestral area reconstruction of the identified major Lactuca lineages. The results showed that Lactuca species are generally similar in plastome size, Guanine and Cytosine (GC) content, gene structure, and categories, although crop lettuce (Lactuca sativa L.) and its gene pool relatives were found to have one unique pseudogene (ψ ndhF), and accD, atpF, cemA, clpP, and rpl22 showed signs of positive selection. Our phylogenomic analysis demonstrated that Lactuca is monophyletic after excluding Lactuca alatipes Collett and Hemsl and AE Lactuca species. AE Lactuca species are morphologically distinct from core Lactuca lineage and need to be excluded from Lactua. The core Lactuca species most likely originated from Asia-Temperate W ~6.82 Mya and then dispersed globally and formed nine clades. Finally, the lettuce gene pool concept was amended according to the phylogenetic and historical biogeographic analyses. This study revised the circumscription of Lactuca, revealed robust phylogenetic relationships within the genus, and provided insights into Lactucinae phylogeny. The lettuce gene pool species could be used as potential genetic resources for lettuce breeding.

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Section: Phylogeny Of Lactucamentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plastome-based phylogeny and biogeography of Lactuca L. (Asteraceae) support revised lettuce gene pool categories

Chu

Xu²,

Lu³

et al. 2022

Front. Plant Sci.

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“…Lettuce can be found in a range of colours, sizes and forms, selected upon cultivation according to the tenets desired. Although there have been different systems of classification proposed by different groups of researchers throughout the years (Rodenburg, 1960;Lebeda et al, 2007;Mou, 2008;Güzel et al, 2021), there is no standardized classification system, due to the high genetic and morphological diversity in the types of lettuce (Kim et al, 2016). According to Mou (2008), there are six main lettuce types based upon the leaf shape, size, texture, head formation, and stem type (Kim et al, 2016).…”

Section: Physico Physico Physico Physico----chemical Properties Of Lettuce Chemical Properties Of Lettuce Chemical Properties Of Lettuce mentioning

confidence: 99%

Influence of environmental and nutritional factors on the development of lettuce (Lactuca sativa L.) microgreens grown in a hydroponic system: A review

Rusu

Moraru

Mintaș

2021

Not Bot Horti Agrobo

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Lettuce microgreens are one of the most popular vegetables due to them being perceived as a “healthy food”, with high concentrations of nutrients, beneficial vitamins, and minerals. With a short vegetation period, they can be cultivated with minimum investment, and they are increasingly accepted by consumers, as they are healthy and easy to prepare. Lettuce has high ecological plasticity, but, despite this, its phenotypic expression, morphology, physiology, and anatomy are significantly influenced by environmental conditions. Lettuce microgreens contain higher quantities of phytonutrients and minerals and lower quantities of nitrates at the early stage of development than at the completely developed stage. The environmental conditions that influence the development of lettuce microgreens (and their quality) in a hydroponic system are as follows (average ideal values): light (400 W), photoperiodicity (12 h), light intensity (400 µmol m−2 s−1), colour spectrum (440-460 nm), temperature (20 ± 2 °C), and humidity (80 ± 5 %). The nutritional solution in a hydroponic system must be carefully monitored, by checking certain essential parameters such as the following (average ideal values): pH (6.3 ± 0.4), electrical conductivity (1.8 ± 0.2 mS), dissolved oxygen (6 mg L−1), and temperature (18 ± 2 °C). The analysis of expert literature reveals that there is a need to establish certain protocols for cultivating microgreens in hydroponic systems, to minimize the factors that can negatively influence the plants, in order to obtain higher concentrations of active substances.

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Lactuca georgica Grossh. is a wild species belonging to the secondary lettuce gene pool: additional evidence, obtained by KASP genotyping

Beharav

2022

Genet Resour Crop Evol

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This work evaluated the genetic relationships between 442 single-seed descent (SSD) accessions, representing eight Lactuca spp., including ve wild Lactuca relatives (WLRs) (Lactuca georgica, L. altaica, L. saligna, L. serriola, L. aculeata), L. tuberosa, L. undulata, and the domesticated lettuce, L. sativa, most of them (437) representing a core subset of the Institute of Evolution's Wild Lettuce Gene Bank (IoE's WLGB) collection. The analysis was performed by pro ling 115 single-nucleotide polymorphism (SNP) markers by means of the uorescent KASP genotyping assay. The KASP marker fragments were scored as either allele "A" or allele "B", that were used across analyses as bi-allelic data, but included relatively a lot of U-scores, i.e., an absence of the speci c sequence, that were treated as missing data. Often U-scores were speci c for a certain species. Data analysis of the ve WLRs showed that allele frequencies of 103 (97.2%) out of 106 differentiating loci varied signi cantly among the species, where 59.7% of the KASP marker diversity was between species. A neighbor-network analysis between samples belonging to the ve WLRs and a single L. sativa cv. clearly clustered all 430 samples in accordance with their taxonomic determination. The results obtained here via multiple complementary analyses of large natural populations and individuals for germplasm variation, question assignment of L. georgica to the primary lettuce gene pool (LGP1). Together with our previous results obtained using TRAP markers, and hybridization experiments, we conclude that L. georgica is a constituent of the LGP2.

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Phylogeny and systematics of the Lactucinae (Asteraceae) focusing on their SW Asian centre of diversity

Cited by 10 publications

References 36 publications

Plastome-based phylogeny and biogeography of Lactuca L. (Asteraceae) support revised lettuce gene pool categories

Plastome-based phylogeny and biogeography of Lactuca L. (Asteraceae) support revised lettuce gene pool categories

Influence of environmental and nutritional factors on the development of lettuce (Lactuca sativa L.) microgreens grown in a hydroponic system: A review

Lactuca georgica Grossh. is a wild species belonging to the secondary lettuce gene pool: additional evidence, obtained by KASP genotyping

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