| 1. |
- Gruber, Christian W, et al.
(author)
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Distribution and evolution of circular miniproteins in flowering plants
- 2008
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In: The Plant Cell. - : Oxford University Press (OUP). - 1040-4651 .- 1532-298X. ; 20:9, s. 2471-2483
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Journal article (peer-reviewed)abstract
- Cyclotides are disulfide-rich miniproteins with the unique structural features of a circular backbone and knotted arrangement of three conserved disulfide bonds. Cyclotides have been found only in two plant families: in every analyzed species of the violet family (Violaceae) and in few species of the coffee family (Rubiaceae). In this study, we analyzed >200 Rubiaceae species and confirmed the presence of cyclotides in 22 species. Additionally, we analyzed >140 species in related plant families to Rubiaceae and Violaceae and report the occurrence of cyclotides in the Apocynaceae. We further report new cyclotide sequences that provide insights into the mechanistic basis of cyclotide evolution. On the basis of the phylogeny of cyclotide-bearing plants and the analysis of cyclotide precursor gene sequences, we hypothesize that cyclotide evolution occurred independently in various plant families after the divergence of Asterids and Rosids ( approximately 125 million years ago). This is strongly supported by recent findings on the in planta biosynthesis of cyclotides, which involves the serendipitous recruitment of ubiquitous proteolytic enzymes for cyclization. We further predict that the number of cyclotides within the Rubiaceae may exceed tens of thousands, potentially making cyclotides one of the largest protein families in the plant kingdom.
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| 2. |
- Delprete, Piero G., et al.
(author)
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Alibertia–Rubiaceae
- 2004
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In: Flora of the Venezuelan Guayana. - St. Louis : Missouri Botanical Garden Press. - 1930723369 ; , s. 512-514
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Book chapter (other academic/artistic)
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| 3. |
- Delprete, Piero G., et al.
(author)
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Sphinctanthus fluvii-dulcis (Rubiaceae: Gardenieae), a new species from the Rio Doce Valley, Atlantic forest of Minas Gerais, Brazil, with detailed observations on ovary morphology
- 2013
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In: Kew Bulletin. - : Springer Science and Business Media LLC. - 0075-5974 .- 1874-933X. ; 68, s. 173-177
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Journal article (peer-reviewed)abstract
- Summary: A new species of Sphinctanthus from the Rio Doce Valley, Atlantic forest in the state of Minas Gerais, Brazil, is here described and illustrated. The species is peculiar within the genus by having placentation entirely parietal, while in the other species of Sphinctanthus the placentation is basally axial and distally parietal. In addition, despite its bright orange flowers (being a plant with high potential as an ornamental), it is only known from two collections from nearby localities, indicating that it is a rare and critically endangered species. © 2012 The Board of Trustees of the Royal Botanic Gardens, Kew.
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| 4. |
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| 5. |
- Persson, Claes, 1960, et al.
(author)
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Cordiera longicaudata sp. nov. and Duroia valesca sp. nov. of the Alibertia group (Gardenieae-Rubiaceae)
- 2010
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In: Nordic Journal of Botany. - 0107-055X. ; 28:5, s. 523-527
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Journal article (peer-reviewed)abstract
- Two neotropical species of the Alibertia group (Gardenieae–Rubiaceae) are described and illustrated. Cordiera longicaudata C. Persson & Delprete sp. nov. occurs in Panama and northwestern Ecuador (Awá Reserve) and is characterized by its long drip tips and glabrous to minutely puberulent corollas. Duroia valesca C. Persson & Delprete sp. nov. is from the Atlantic forest of Brazil (states of Espírito Santo and Minas Gerais) and is distinguished by its heteromorphic calyx lobes that are large, 13–15×7–8mm, elliptic and contorted in female flowers, whereas the calyx lobes of the male flowers are 3–5×1–2mm and narrowly triangular.
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| 6. |
- Persson, Claes, 1960, et al.
(author)
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Cordiera - Rubiaceae
- 2004
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In: Flora of the Venezuelan Guayana 8 Poaceae-Rubiaceae. - St. Louis : Missouri Botanical Garden Press. - 1930723369 ; , s. 558-560
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Book chapter (other academic/artistic)
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| 7. |
- Taylor, Charlotte M., et al.
(author)
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Rubiacearum Americanarum Magna Hama Pars XXVIII: New Taxa, New Combinations, New Names, and Lectotypification for Several Species Found in Mexico and Central America
- 2011
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In: Novon. - : Missouri Botanical Garden Press. - 1055-3177. ; 21:1, s. 133-148
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Journal article (peer-reviewed)abstract
- The Neotropical genus Borojoa Cuatrec. (Rubiaceae) is now considered a synonym of Alibertia A. Rich. ex DC. Consequently, three species named in Borojoa and found in Costa Rica and Panama are transferred to Alibertia with these corresponding nomenclatural changes: the new combination A. atlantica (Dwyer) Delprete & C. H. Perss. is based on B. atlantica Dwyer, the new name A. dwyeri Delprete & C. H. Perss. is provided for B. panamensis Dwyer, and the new combination A. patinoi (Cuatrec.) Delprete & C. H. Perss. is provided for B. patinoi Cuatrec. Additionally, the species A. premontana C. M. Taylor is reduced to a variety of A. (quits (Rich.) A. Rich. ex DC., as A. edulis var. premontana (C. M. Taylor) Delprete & C. H. Perss. A lectotype is selected for A. edulis. The recent publication of Arachnothryx chimalaparam Lorence ex Borhidi designated a holotype deposited at MO, but no such specimen has been located; a lectotype is here chosen based on a duplicate of the holotype deposited at MEXU. The new species Notopleura recondita Hammel & C. M. Taylor of the Osa Peninsula of Costa Rica can be distinguished from polyphlebia (Donn. Sm.) C. M. Taylor by its leaf blades with the secondary veins plane on the adaxial surface and its short cymose or paniculiform inflorescences. The new species Palicourea matamana C. M. Taylor of premontane forests of central-eastern Costa Rica can be separated from P. orosiana C. M. Taylor by its larger stipules, longer calyx lobes, and hirsute pubescence. The new species P. providenciana J. Sanchez-Gonz. & C. M. Taylor of montane forests in south-central Costa Rica can be separated from P. hammelii C. M. Taylor by its longer lanceolate stipule lobes, dark purple or yellow-flushed inflorescences, and shorter calyx lobes. The Panamanian plants treated previously as Psychotria acuminata subsp. boraginoides Dwyer are here considered to differ at the species level from P. acuminata Benth., and accordingly the new combination P. boraginoides (Dwyer) C. M. Taylor is here published for this species. Clarification of the identity of Cephaelis croatii Dwyer shows that it is a distinct species of Psychotria, and the new combination P. croatii (Dwyer) C. M. Taylor is published here for this species. The new species P. herrerana C. M. Taylor of central Costa Rica can be recognized by its combination of large, sessile, elliptic leaves, its large paniculiform inflorescences, and its relatively small corollas. Study of the Costa Rican plants previously called Rudgea thyrsiflora Donn. Sm. shows that these do not have the characters of Rudgea, but are similar to Psychotria racemosa Rich, and better included in this latter genus; the new name P. tsakiana C. M. Taylor is here published for this species. The new combination Simira panamensis (Dwyer) C. M. Taylor is published here based on the name Bathysa panamensis Dwyer, which has priority over the name S. darienensis Dwyer; both of the names Dwyer published are based on the same type specimen, thus the later name S. darienensis is illegitimate.
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