Phylogenetic relationships within<i>Senna</i>(Leguminosae, Cassiinae) based on three chloroplast DNA regions: patterns in the evolution of floral symmetry and extrafloral nectaries

Marazzi, Brigitte; Endress, Peter K.; Queiroz, Luciano Paganucci de; Conti, Elena

doi:10.3732/ajb.93.2.288

Cited by 135 publications

(196 citation statements)

References 56 publications

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“…clades because they have recently published phylogenies, are known to contain species with and without EFNs (10,18,(22)(23)(24)(25)(26)(27), and are distantly related to one another. For Senna, which was previously investigated for a link between EFN and diversification rates (10), we added recently published records on EFNs in an additional clade (28).…”

Section: Resultsmentioning

confidence: 99%

Defense mutualisms enhance plant diversification

Weber

Agrawal

2014

Proc. Natl. Acad. Sci. U.S.A.

147

134

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The ability of plants to form mutualistic relationships with animal defenders has long been suspected to influence their evolutionary success, both by decreasing extinction risk and by increasing opportunity for speciation through an expanded realized niche. Nonetheless, the hypothesis that defense mutualisms consistently enhance plant diversification across lineages has not been well tested due to a lack of phenotypic and phylogenetic information. Using a global analysis, we show that the >100 vascular plant families in which species have evolved extrafloral nectaries (EFNs), sugar-secreting organs that recruit arthropod mutualists, have twofold higher diversification rates than families that lack species with EFNs. Zooming in on six distantly related plant clades, traitdependent diversification models confirmed the tendency for lineages with EFNs to display increased rates of diversification. These results were consistent across methodological approaches. Inference using reversible-jump Markov chain Monte Carlo (MCMC) to model the placement and number of rate shifts revealed that high net diversification rates in EFN clades were driven by an increased number of positive rate shifts following EFN evolution compared with sister clades, suggesting that EFNs may be indirect facilitators of diversification. Our replicated analysis indicates that defense mutualisms put lineages on a path toward increased diversification rates within and between clades, and is concordant with the hypothesis that mutualistic interactions with animals can have an impact on deep macroevolutionary patterns and enhance plant diversity. mutualism | extrafloral nectaries | plant-insect interactions | lineage diversification rates | plant defense

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Section: Resultsmentioning

confidence: 99%

Defense mutualisms enhance plant diversification

Weber

Agrawal

2014

Proc. Natl. Acad. Sci. U.S.A.

147

134

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“…Absus subsect. Baseophyllum (Conceição et al 2008) as well as in Leguminosae (Lersten & Brubaker 1987;Pascal et al 2000;Marazzi et al 2006;Melo et al 2010) and other plant families (Keeler & Kaul 1979;Oliveira & Leitão-Filho 1987;So 2004;Weber & Keeler 2013).…”

Section: Discussionmentioning

confidence: 99%

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

et al. 2016

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Little attention has been paid to species of Chamaecrista sect. Apoucouita (Leguminosae-Caesalpinioideae), especially regarding anatomical studies. When only vegetative material is available, the identifi cation of such species may be diffi cult. Additionally, vegetative material of some species of C. sect. Apoucouita may be even harder to identify because they can resemble species of Inga Mill. (Leguminosae-Mimosoideae). Th e present study focused on recognizing morphoanatomical characters of leaves that are taxonomically useful for the species of C. sect. Apoucouita by employing standard anatomical techniques. Th e arrangement of the vascular system in the petiole/rachis, dorsiventral mesophyll, mucilage idioblasts in the epidermis of leafl ets and hypostomatic leaves were some of the characters shared by all species studied. Length of the petiole, position and type of extrafl oral nectaries, leafl et venation, presence and type of papillae on the epidermis of the leafl et blades and sclereids in the mesophyll were some of the characters useful in the distinction of taxa. Th e vascular arrangement of the petiole/rachis is a promising character in the distinction of species of C. sect. Apoucouita and Inga. Based on morphoanatomical data, the taxonomic revision of some species and varieties ascribed to C. sect. Apoucouita is suggested.

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“…The species arrangement did not follow any logical pattern and the data obtained was not discernible. Marazzi et al (2006) studied phylogenetic relationships within Senna based on parsimony analyses of three chloroplast regions (rpS16, rpL16, and matK) and provided new insights on the evolution of floral symmetry and extrafl oral nectaries. Th eir results supported the monophyly of only one sect.…”

Section: Chamaecristamentioning

confidence: 99%

Separation of the genera in the subtribe Cassiinae (Leguminosae: Caesalpinioidae) using molecular markers

2011

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Separation of the genera in the subtribe Cassiinae (Leguminosae: Caesalpinioidae) using molecular markers RESUMO (Separação dos gêneros na subtribo Cassiinae (Leguminosae: Caesalpinioidae) utilizando marcadores moleculares). Técnicas de Random amplified polymorphic DNA (RAPD), Inter simple sequence repeat (ISSR) e Amplified Fragment Length Polymorphism markers (AFLP) foram utilizadas para verificar a segregação do gênero Cassia L. senso lato em três diferentes gêneros, Chamaecrista Moench., Senna P. Mill. e Cassia L. senso stricto Dezoito representantes dos três táxons foram caracterizados com o uso de marcadores moleculares: 25 RAPD, seis iniciadores ("primers") ISSR e seis AFLP combinações de iniciadores, resultando na amplificação de 612, 115 e 622 bandas (loci), respectivamente. A maioria dos loci apresentou-se como polimórfico, mostrando um alto grau de diversidade genética entre os táxons estudados. O dendrograma construído com base nos dados de RAPD, ISSR e AFLP e agrupamento com procedimentos SHAN dividiu Cassia L. senso lato em três diferentes agrupamentos, chamados de Chamaecrista Moench., Senna P. Mill. e Cassia L. senso stricto Valores altos de bootstrap revelaram que todos os agrupamentos foram estáveis e robustos. Foi observado pela presente investigação que estes gêneros possuem identidade ao nível molecular, o que sustenta a elevação do genero Cassia L. senso lato para o nível de subtribo e a segregação dos três gêneros ao invés de formarem categorias infra-genéricas.Palavras-chave: AFLP, Cassia, fi logenia molecular, ISSR, RAPD Laxmikanta Acharya 1, 4 , Arup Kumar Mukherjee 2 and Pratap Chandra Panda 3 ABSTRACT(Separation of the genera in the subtribe Cassiinae (Leguminosae: Caesalpinioidae) using molecular markers). Random amplified polymorphic DNA (RAPD), Inter simple sequence repeat (ISSR) and Amplified fragment length polymorphism (AFLP) markers were used to verify the segregation of the genus Cassia L. senso lato into three distinct genera namely Chamaecrista Moench., Senna P. Mill. and Cassia L. sensostricto Eighteen representatives of the three taxa were characterized using the molecular markers. 25 RAPD, six ISSR primers and six AFLP primer combinations resulted in the amplification of 612, 115 and 622 bands (loci) respectively. Most of the loci are found to be polymorphic, showing high degrees of genetic diversity among the different taxa studied. The dendrogram constructed on the basis of the RAPD, ISSR and AFLP data using SHAN clustering, divided Cassia L. senso lato. into three different clusters as Chamaecrista Moench. Senna P. Mill. and Cassia L. senso stricto High bootstrap value revealed that all the clusters were stable and robust. It was observed from the present investigation that these genera have their identity at molecular level, which supports the elevation of the genus Cassia L. senso lato to the level of subtribe Cassiinae and segregation into three distinct genera instead of intrageneric categories. IntroductionCassia L. senso lato (Leguminosae: Caesalpinioideae) is on...

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Phylogenetic relationships withinSenna(Leguminosae, Cassiinae) based on three chloroplast DNA regions: patterns in the evolution of floral symmetry and extrafloral nectaries

Cited by 135 publications

References 56 publications

Defense mutualisms enhance plant diversification

Defense mutualisms enhance plant diversification

A study of the morphoanatomical characters of the leaves of Chamaecrista (L.) Moench sect. Apoucouita (Leguminosae-Caesalpinioideae)

Separation of the genera in the subtribe Cassiinae (Leguminosae: Caesalpinioidae) using molecular markers

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