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Marta A. Caccavari - One of the best experts on this subject based on the ideXlab platform.
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Analysis of the South American fossil pollen record of Mimosoideae (Leguminosae)
Review of Palaeobotany and Palynology, 1996Co-Authors: Marta A. CaccavariAbstract:Abstract A re-evaluation of published reports of palynomorphs that have been recognized or assigned to the Mimosoideae (Leguminosae) is presented. Botanical affinities for the palynomorphs are proposed and the affinities of Retitricolpites medius (Eocene of Colombia) and Triporotetradites gemmatus (Upper Cretaceous of Brazil) are discussed. If the latter palynomorph is a Mimosa it would be the oldest of the subfamily. If the porate condition is derived, T. gemmatus suggests an even older origin for the Mimosoideae. The morphological and systematic diversity of South American mimosoid palynomorphs from Upper Cretaceous and younger strata, is compared to that of other geographic areas. The palynological record demonstrates that both tropical America and Africa were important in the early history of the Mimosoideae. Based on the new data an evolutionary interpretation is presented.
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Analysis of the South American fossil pollen record of Mimosoideae (Leguminosae)
Review of Palaeobotany and Palynology, 1996Co-Authors: Marta A. CaccavariAbstract:Abstract A re-evaluation of published reports of palynomorphs that have been recognized or assigned to the Mimosoideae (Leguminosae) is presented. Botanical affinities for the palynomorphs are proposed and the affinities of Retitricolpites medius (Eocene of Colombia) and Triporotetradites gemmatus (Upper Cretaceous of Brazil) are discussed. If the latter palynomorph is a Mimosa it would be the oldest of the subfamily. If the porate condition is derived, T. gemmatus suggests an even older origin for the Mimosoideae. The morphological and systematic diversity of South American mimosoid palynomorphs from Upper Cretaceous and younger strata, is compared to that of other geographic areas. The palynological record demonstrates that both tropical America and Africa were important in the early history of the Mimosoideae. Based on the new data an evolutionary interpretation is presented.
Hiroyoshi Ohashi - One of the best experts on this subject based on the ideXlab platform.
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Entada (Leguminosae Subfam. Mimosoideae) of Taiwan
2010Co-Authors: Hiroyoshi Ohashi, Tseng-chieng Huang, Kazuaki OhashiAbstract:The genus Entada (Leguminosae subfam. Mimosoideae) in Taiwan is revised. Two species, Entada phaseoloides (L.) Merr. and E. rheedei Spreng. are recognized, of which the former is divided into subsp. phaseoloides and subsp. tonkinensis (Gagnep.) H. Ohashi (new combination). Entada phaseoloides subsp. phaseoloides corresponds to E. koshunensis Hayata & Kaneh. and E. parvifolia Merr. previously recognized in Taiwan, while E. phaseoloides subsp. tonkinensis is identical with E. phaseoloides as recorded from northern and central Taiwan. Entada formosana Kaneh. is referable to E. rheedei Spreng., which is the correct name for E. pursaetha DC. adopted in previous works in Taiwan. Entada koshunensis Hayata & Kaneh. is typified. Entada pursaetha var. formosana (Kanehira) F. C. Ho is an illegitimate name.
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The features of cotyledon areoles in Leguminosae and their systematic utility.
American Journal of Botany, 1998Co-Authors: Yasuhiko Endo, Hiroyoshi OhashiAbstract:The cotyledon areole, which is a spot with granular projections of epidermal cells, appears on the abaxial surface and on the midvein of some legume seed cotyledons. The distribution and systematic utility of cotyledon areoles were studied by observation of 132 legume species, which represent 100 genera and are classified into 34 tribes of three subfamilies, i.e., Caesalpinioideae, Mimosoideae, and Papilionoideae. The cotyledon areole is found in many species of Papilionoideae but not in the other two subfamilies. Presence of a cotyledon areole is presumed to be an apomorphic character state in Papilionoideae from the outgroup rule.
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a phylogeny of the chloroplast gene rbcl in the leguminosae taxonomic correlations and insights into the evolution of nodulation
American Journal of Botany, 1997Co-Authors: Jane L Doyle, J A Ballenger, Elizabeth E Dickson, Tadashi Kajita, Hiroyoshi OhashiAbstract:Phylogenetic analysis of the chloroplast-encoded rbcL gene in Leguminosae are consistent with previous hypotheses in suggesting that the family as a whole is monophyletic, but that only two of its three subfamilies are natural. The earliest dichotomies in the family appear to have involved tribes Cercideae or Cassieae (subtribe Dialiinae), followed by Detarieae/ Macrolobieae, all of which are members of subfamily Caesalpinioideae. The remainder of the family is divided into two clades: (1) Mimosoideae and the caesalpinioid tribes Caeasalpinieae and Cassieae (subtribes Ceratoniinae and Cassiinae); (2) Papilionoideae. Basal groups within Papilionoideae are, as expected, elements of the grade tribes Sophoreae and Swartzieae. Major clades within Papilionoideae include: (1) a Genistoid Alliance comprising Genisteae, Crotalarieae, Podalyrieae, Thermopsideae, Euchresteae, and also some Sophoreae; (2) a clade marked by the absence of one copy of the chloroplast inverted repeat, with which are associated Robinieae. Loteae, and some Sophoreae; (3) Phaseoleae, Desmodieae. Psoraleeae, and most Millettieae, a group also marked by presence of pseudoracemose inflorescences; and (4) a well-supported clade comprising Aeschynomeneae, Adesmieae, and some Dalbergieae. Nodulation is most parsimoniously optimized on the rbcL strict consensus tree as three parallel gains, occurring in Papilionoideae, the caesalpioioid ancestors of Mimosoideae, and in the genus Chamaecrista (Caesalpinieae: Cassieae).
Michelle Van Der Bank - One of the best experts on this subject based on the ideXlab platform.
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Phylogenetic Relationships in Senegalia (Leguminosae-Mimosoideae) Emphasizing the South American Lineages
Systematic Botany, 2017Co-Authors: Vanessa Terra, Flávia Cristina Pinto Garcia, Luciano Paganucci De Queiroz, Michelle Van Der Bank, Joseph T. MillerAbstract:Senegalia is a genus of the legume family (Leguminosae: Mimosoideae) that has a pantropical distribution with centers of diversity in Brazil, Mexico and southern Africa. The genus is characterized by plants having bipinnate leaves, presence of petiolar nectaries, prickles on the branches, and pollen grains arranged in polyads with 16 grains. Morphology is an important tool for identification of Senegalia species, but it is not sufficient to resolve all taxonomic issues and elucidate the evolutionary history of this genus. Prior molecular analyses of Mimosoideae have lacked breadth of samplingwithin Senegalia, leavingmany relationships uncertain, particularly the relationship among Brazilian species and other members of the genus. The aim of this study was to identify Senegalia s. s. lineages that contain Brazilian species, and to investigate the relationship of these species with non-Brazilian Senegalia species. We present the first comprehensively sampled phylogeny of American and African Senegalia, however Asian species are not sampled.We sequenced four plastid and one nuclear DNA (ITS) regions for 125 samples of 59 Senegalia and one Parasenegalia species. Both Bayesian andmaximum likelihood analyses were performed.Neither the American or African species form monophyletic lineages. The lack of monophyly of these groups suggests a more complicated evolutionary history of the genus than previously considered, including probable transatlantic dispersal events.
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the evolutionary history and biogeography of Mimosoideae leguminosae an emphasis on african acacias
Molecular Phylogenetics and Evolution, 2010Co-Authors: Yanis Bouchenakkhelladi, Johan Hurter, Olivier Maurin, Michelle Van Der BankAbstract:Abstract The systematics of Mimosoideae has been in a state of flux, which reflects overall poor knowledge of the evolution and biogeography of this group. Preliminary molecular phylogenetic analyses suggest the tribal system of Mimosoideae needs a complete revision. This has led to the use of new generic names for Acacia sensu lato ( s.l. hereafter) following the re-typification of Acacia with an Australian type: (i) Acacia sensu stricto ( s.s. hereafter), Vachellia , Senegalia , Acaciella and Mariosousa . This study reconstructs the evolutionary history of Mimosoideae, using the most comprehensive sampling to date, with an emphasis on African species. It aims to reconstruct the phylogenetic relationships among the five recognized genera within Acacieae as the precursor to elucidate the paleo-biogeography of mimosoids and their adaptation to open habitats in the Cenozoic. The basal position of Mimoseae lineages with regards to Vachellia and Senegalia + Mariosousa + Acaciella + Ingeae + Acacia s.s. clades is a novel finding. Vachellia (formerly Acacia subgenus Acacia) is found monophyletic. A grade including the remaining Mimoseae lineages is found sister to the Senegalia + Mariosousa + Acaciella + Ingeae + Acacia s.s. clade. The major clades originated in the late Oligocene–early Miocene (∼25 mya). The transitions from close to open habitats occurred during the Miocene for at least four mimosoid lineages. These are interpreted as responses to increased seasonality leading to fire climates and drying trends in the Miocene, which allowed the expansion of open habitats, such as savannas, worldwide.
Phillip G Kodela - One of the best experts on this subject based on the ideXlab platform.
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Acacia yalwalensis (Fabaceae, Mimosoideae sect. Botrycephalae), a new species from the South Coast of New South Wales, Australia
Telopea, 2015Co-Authors: Phillip G KodelaAbstract:Acacia yalwalensis Kodela (Fabaceae, Mimosoideae sect. Botrycephalae) is here described from the South Coast region of New South Wales, Australia. It was previously confounded with Acacia oshanesii F.Muell. which occurs in the North Coast region of New South Wales and southeast Queensland.
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The reduction of Acacia burkittii to Acacia acuminata subsp. burkittii (Acacia sect. Juliflorae: Fabaceae, Mimosoideae)
Telopea, 1998Co-Authors: Phillip G Kodela, Mary TindaleAbstract:Kodela, P.G. and Tindale, M.D. (National Herbarium of New South Wales, Royal Botanic Gardens, Mrs Macquaries Road, Sydney, N.S.W. 2000, Australia) 1998. The reduction of Acacia burkittii to Acacia acuminata subsp. burkittii (Acacia sect. Juliflorae: Fabaceae, Mimosoideae). Telopea 7(4): 415–417. Acacia burkittii is here transferred to A. acuminata as subsp. burkittii. Acacia acuminata subsp. acuminata is endemic to south-west Western Australia, while A. acuminata subsp. burkittii extends from south Western Australia to western New South Wales.
Alex Delobel - One of the best experts on this subject based on the ideXlab platform.
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New Bruchidius species reared from Vachellia (Fabaceae: Mimosoideae: Acacieae) seeds from Eastern and Southern Africa (Coleoptera: Chrysomelidae: Bruchinae)
Acta Entomologica Musei Nationalis Pragae, 2015Co-Authors: Alex DelobelAbstract:Descriptions of the following new species reared from seeds of various Vachellia species (Fabaceae: Mimosoideae: Acacieae) are presented: Bruchidius horridus sp. nov. from V. horrida (L.) Willd., B. quadrispinosus sp. nov. from V. xanthophloea (L.) Willd., B. tumidulus sp. nov. from V. seyal (Del.) P. I. H. Hurter, V. nilotica subulata (Vatke) Kyal. & Boatwr and V. lahal (Steud. & Hochst. ex. Benth.) Kyal. & Boatwr., all from Kenya, and B. spathiger sp. nov. from V. etbaica Hayne, V. karroo Schweinf. and V. tenuispina Verdoorn from Kenya, Zimbabwe, and the Republic of South Africa, respectively.
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both host plant phylogeny and chemistry have shaped the african seed beetle radiation
Molecular Phylogenetics and Evolution, 2005Co-Authors: Gael J Kergoat, Alex Delobel, Gilles Fediere, Bruno Le Ru, Jeanfrancois SilvainAbstract:For the last 40 years, many authors have attempted to characterize the main patterns of plant-insect evolutionary interactions and understand their causes. In the present work on African seed-beetles (Coleoptera: Bruchidae), we have performed a 10-year field work to sample seeds of more than 300 species of potential host-plants (from the family Fabaceae), to obtain bruchids by rearing. This seed sampling in the field was followed by the monitoring of adult emergences which gave us the opportunity to identify host-plant use accurately. Then, by using molecular phylogenetics (on a combined data set of four genes), we have investigated the relationships between host-plant preferences and insect phylogeny. Our objectives were to investigate the level of taxonomic conservatism in host-plant fidelity and host-plant chemistry. Our results indicate that phylogenetically related insects are associated with phylogenetically related host-plants but the phylogeny of the latter cannot alone explain the observed patterns. Major host shifts from Papilionoideae to Mimosoideae subfamilies have happened twice independently suggesting that feeding specialization on a given host-plant group is not always a dead end in seed-beetles. If host-plant taxonomy and chemistry in legumes generally provide consistent data, it appears that the nature of the seed secondary compounds may be the major factor driving the diversification of a large clade specializing on the subfamily Mimosoideae in which host-plant taxonomy is not consistent with chemical similarity.
