Nuevos resultados de la revisión taxonómica de los géneros Palicourea y Psychotria (Rubiaceae, Psychotrieae) en Cuba

Borhidi, A.; Oviedo-Prieto, Ramona; Fernández-Zequeira, M.

doi:10.1556/034.58.2016.1-2.1

Cited by 6 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Leaves of nickel hyperaccumulator plants belonging to five distinct plant families (Jestrow et al ., 2012; Jaffré et al ., 2013; Gonneau et al ., 2014; Borhidi et al ., 2016), Brassicaceae ( N. caerulescens ssp. firmiensis ( Ncfi )), Cunoniaceae ( Geissois pruinosa ( Gpru )), Euphorbiaceae ( Leucocroton havanensis ( Lhav )), Rubiaceae ( Psychotria costivenia ( Pcos ), Psychotria gabriellae ( Pgab ), Psychotria grandis ( Pgra )), Salicaceae ( Homalium kanaliense ( Hkan )), and leaves of related nonnickel hyperaccumulators, Brassicaceae ( N. caerulescens ‘Viviez’ ( Ncviv ), Noccaea montana ( Nmon )), Cunoniaceae ( Geissois racemosa ( Grac )), Euphorbiaceae ( Lasiocroton microphyllus ( Lmic )), Rubiaceae ( Psychotria revoluta ( Prev ), Psychotria semperflorens ( Psem )), Salicaceae ( Homalium betulifolium ( Hbet )), were collected on individual plants growing in their natural environment and localized by GPS (Supporting Information Table S1).…”

Section: Methodsmentioning

confidence: 99%

Wide cross‐species RNA‐Seq comparison reveals convergent molecular mechanisms involved in nickel hyperaccumulation across dicotyledons

et al. 2020

View full text Add to dashboard Cite

The Anthropocene epoch is associated with the spreading of metals in the environment increasing oxidative and genotoxic stress on organisms. Interestingly, c. 520 plant species growing on metalliferous soils acquired the capacity to accumulate and tolerate a tremendous amount of nickel in their shoots. The wide phylogenetic distribution of these species suggests that nickel hyperaccumulation evolved multiple times independently. However, the exact nature of these mechanisms and whether they have been recruited convergently in distant species is not known. To address these questions, we have developed a cross-species RNA-Seq approach combining differential gene expression analysis and cluster of orthologous group annotation to identify genes linked to nickel hyperaccumulation in distant plant families. Our analysis reveals candidate orthologous genes encoding convergent function involved in nickel hyperaccumulation, including the biosynthesis of specialized metabolites and cell wall organization. Our data also point out that the high expression of IREG/Ferroportin transporters recurrently emerged as a mechanism involved in nickel hyperaccumulation in plants. We further provide genetic evidence in the hyperaccumulator Noccaea caerulescens for the role of the NcIREG2 transporter in nickel sequestration in vacuoles. Our results provide molecular tools to better understand the mechanisms of nickel hyperaccumulation and study their evolution in plants.

show abstract

Section: Methodsmentioning

confidence: 99%

Wide cross‐species RNA‐Seq comparison reveals convergent molecular mechanisms involved in nickel hyperaccumulation across dicotyledons

et al. 2020

View full text Add to dashboard Cite

show abstract

“…M. Taylor recientemente publicó la revisión taxonómica de la sección Nonatelia (in Taylor y Hollowell, Novon 2016) ampliando el grupo originalmente monotípico hasta 26 especies según un concepto nuevo. Borhidi (2016) en su trabajo monográfico sobre la circumscripción del subgénero Heteropsychotria considera, que la sección en la forma propuesta por Taylor es heterogéneo, un "cajón de sastre" utilizando la terminología de David Lorence (Flora Mesoamericana 4(2): 17. 2012) .…”

Section: Introductionunclassified

Tromlyca género nuevo en los Andes de Colombia (Rubiaceae, Palicoureeae)

Borhidi

2017

Acta Botanica Hungarica

View full text Add to dashboard Cite

The new genus is based on Palicourea locellata C. M. Taylor described from the Colombian Andes and placed into the Nonatelia section reconsidered and strongly enlarged by C. M. Taylor including 26 species into the originally monotypic section. According the new protologue of the section it is a highly varied and rather heterogeneous group in morphological point of view. Therefore the section Nonatelia C. M. Taylor is interpreted here in a reduced sense including not more than 5 species. The remained 19 species belong to an undetermined unit or to more units for the moment. Apparently two species Palicourea locellata and P. woronowii do not fit well into Nonatelia, and even to the genus Palicourea either. For the separation of P. woronowii there is not sufficient information, but in the case of P. locellata the morphological information available are well-enough for its distinction on generic level. The new genus is dedicated to the author of the species, being Tromlyca the anagram of C. M. Taylor.

show abstract

Wide cross-species RNA-Seq comparison reveals a highly conserved role for Ferroportins in nickel hyperaccumulation in plants

Torre

Majorel

Gonzalez

et al. 2018

Preprint

View full text Add to dashboard Cite

The Anthropocene epoch is associated with the spreading of metals in the environment increasing oxidative and genotoxic stress on living organisms 1,2 . Once regarded as a curiosity, plants hyperaccumulating metals are now envisioned as an opportunity to remediate metal contaminated soils. About 500 plant species adapted to metalliferous soils acquired the capacity to hyperaccumulate (>0.1% of dry weight) nickel in their shoot 3 . The phylogenetic distribution of these hyperaccumulators in 50 families suggest that this complex trait evolved multiple times independently from basic mechanisms involved in metal homeostasis. However, the exact nature of these mechanisms and whether they are shared between various lineages is not known. Here, using cross-species transcriptomic analyses in different plant families, we have identified convergent functions that may represent major nodes in the evolution of nickel hyperaccumulation. In particular, our data point out that constitutive high expression of IREG/Ferroportin transporters recurrently emerged as a mechanism involved in nickel hyperaccumulation.Nickel hyperaccumulators are found worldwide as herbaceous plants, shrubs or trees growing on outcrops originating from ultramafic rocks, such as serpentine soils rich in iron, nickel, and cobalt. Although nickel hyperaccumulation is a rare and complex trait, it appeared independently in many distant plant families worldwide (Figure 1). In this study, we ask whether the same molecular mechanisms have been recruited convergently to reach this extreme trait. To address this question, we first compared the transcriptomes of nickel hyperaccumulators and closely related non-accumulator species to identify candidate genes involved in nickel hyperaccumulation. Then, in a second step, we established orthologous relationships to identify genes with similar functions that display differential expression in nickel hyperaccumulators from distant families.

show abstract

Nuevos resultados de la revisión taxonómica de los géneros Palicourea y Psychotria (Rubiaceae, Psychotrieae) en Cuba

Cited by 6 publications

References 17 publications

Wide cross‐species RNA‐Seq comparison reveals convergent molecular mechanisms involved in nickel hyperaccumulation across dicotyledons

Wide cross‐species RNA‐Seq comparison reveals convergent molecular mechanisms involved in nickel hyperaccumulation across dicotyledons

Tromlyca género nuevo en los Andes de Colombia (Rubiaceae, Palicoureeae)

Wide cross-species RNA-Seq comparison reveals a highly conserved role for Ferroportins in nickel hyperaccumulation in plants

Contact Info

Product

Resources

About