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Yunheng Ji - One of the best experts on this subject based on the ideXlab platform.
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comparative and phylogenetic analyses of the complete chloroplast genomes of three arcto tertiary relicts camptotheca acuminata davidia involucrata and nyssa sinensis
Frontiers in Plant Science, 2017Co-Authors: Zhenyan Yang, Yunheng JiAbstract:The Arcto-Tertiary relict genera, Camptotheca, Davidia and Nyssa represent deep lineages in the asterid order Cornales. Recent phylogenetic studies suggested that these genera should be placed in a newly circumscribed family, Nyssaceae. However, because these analyses were based upon a few genes, it is prudent and necessary to examine further evidence before adopting this taxonomic treatment. In this study, we determined the complete chloroplast (cp) genomes of Camptotheca acuminata, Davidia involucrata, and Nyssa sinensis. Their cp genomes ranged from 156672 to 158409 base pairs, which included 115 genes, and their genome features were highly similar to those of other species within the order Cornales. The phylogenetic relationships among the genera Camptotheca, Davidia, Nyssa, and 23 related taxa in the asterids were analyzed based on 73 protein-coding genes from the cp genomes. All of the previously recognized major clades (namely Cornales, Ericales, Campanulids, and Lamiids) in the asterids, as well as their relationships, were recovered with robust support. A clade including the genera Davidia, Nyssa, Camptotheca, and Diplopanax, was resolved as a well-supported monophyletic group, which was fully separated from the family Cornaceae by the family Hydrangeaceae. Our results provide novel evidence to support the acceptance of the family Nyssaceae outlined by the updated Angiosperm Phylogeny Group.
Zhenyan Yang - One of the best experts on this subject based on the ideXlab platform.
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comparative and phylogenetic analyses of the complete chloroplast genomes of three arcto tertiary relicts camptotheca acuminata davidia involucrata and nyssa sinensis
Frontiers in Plant Science, 2017Co-Authors: Zhenyan Yang, Yunheng JiAbstract:The Arcto-Tertiary relict genera, Camptotheca, Davidia and Nyssa represent deep lineages in the asterid order Cornales. Recent phylogenetic studies suggested that these genera should be placed in a newly circumscribed family, Nyssaceae. However, because these analyses were based upon a few genes, it is prudent and necessary to examine further evidence before adopting this taxonomic treatment. In this study, we determined the complete chloroplast (cp) genomes of Camptotheca acuminata, Davidia involucrata, and Nyssa sinensis. Their cp genomes ranged from 156672 to 158409 base pairs, which included 115 genes, and their genome features were highly similar to those of other species within the order Cornales. The phylogenetic relationships among the genera Camptotheca, Davidia, Nyssa, and 23 related taxa in the asterids were analyzed based on 73 protein-coding genes from the cp genomes. All of the previously recognized major clades (namely Cornales, Ericales, Campanulids, and Lamiids) in the asterids, as well as their relationships, were recovered with robust support. A clade including the genera Davidia, Nyssa, Camptotheca, and Diplopanax, was resolved as a well-supported monophyletic group, which was fully separated from the family Cornaceae by the family Hydrangeaceae. Our results provide novel evidence to support the acceptance of the family Nyssaceae outlined by the updated Angiosperm Phylogeny Group.
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Comparative and Phylogenetic Analyses of the Complete Chloroplast Genomes of Three Arcto-Tertiary Relicts: Camptotheca acuminata, Davidia involucrata, and Nyssa sinensis
Frontiers Media S.A., 2017Co-Authors: Zhenyan YangAbstract:The Arcto-Tertiary relict genera, Camptotheca, Davidia, and Nyssa represent deep lineages in the asterid order Cornales. Recent phylogenetic studies suggested that these genera should be placed in a newly circumscribed family, Nyssaceae. However, because these analyses were based upon a few genes, it is prudent and necessary to examine further evidence before adopting this taxonomic treatment. In this study, we determined the complete chloroplast (cp) genomes of Camptotheca acuminata, Davidia involucrata, and Nyssa sinensis. Their cp genomes ranged from 156,672 to 158,409 bp, which included 115 genes, and their genome features were highly similar to those of other species within the order Cornales. The phylogenetic relationships among the genera Camptotheca, Davidia, Nyssa, and 23 related taxa in the asterids were analyzed based on 73 protein-coding genes from the cp genomes. All of the previously recognized major clades (namely Cornales, Ericales, Campanulids, and Lamiids) in the asterids, as well as their relationships, were recovered with robust support. A clade including the genera Davidia, Nyssa, Camptotheca, and Diplopanax, was resolved as a well-supported monophyletic group, which was fully separated from the family Cornaceae by the family Hydrangeaceae. Our results provide novel evidence to support the acceptance of the family Nyssaceae outlined by the updated Angiosperm Phylogeny Group
Nishida Kenji - One of the best experts on this subject based on the ideXlab platform.
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Nauja mokslui mažųjų gaubtagalvių (Lepidoptera) rūšis, riklausanti Ozadelpha van Nieukerken genčiai
2020Co-Authors: Stonis, Jonas Rimantas, Diškus Arūnas, Remeikis Andrius, Nishida KenjiAbstract:Straipsnyje aprašoma nauja mokslui Ozadelpha nigella rūšis, aptikta Jungo miškų provincijoje, Bolivijoje (Pietų Amerika). Jos duomenys papildo šios kontroversiškos genties diagnostiką. Straipsnyje pateikiama išsami O. nigella suaugėlių, patino ir patelių genitalijų bei minų morfologijos dokumentacija. Aptariami Ozadelpha genties diagnostikos klausimai, išskiriami požymiai, leidžiantys identifikuoti taksonąWe describe a new species, Ozadelpha nigella Diškus & Stonis, sp. nov., a leaf miner on Symplocos Jacq. (Ericales: Symplocaceae), from the Yungas biogeographical province, South America. We briefly discuss the issues of diagnostics of the recently erected genus Ozadelpha van Nieukerken. The genus is now comprised of four named species having shared characters useful for efficient identification and genus recognition. The new species is illustrated with photographs of the adults, male genitalia and leaf minesBaltijos-Amerikos biotaksonomijos institutasMokytojų rengimo institutasVytauto Didžiojo universitetasŠvietimo akademij
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Nauja mokslui mažųjų gaubtagalvių (Lepidoptera) rūšis, riklausanti Ozadelpha van Nieukerken genčiai
'Lithuanian Academy of Sciences', 2020Co-Authors: Stonis, Jonas Rimantas, Diškus Arūnas, Remeikis Andrius, Nishida KenjiAbstract:Straipsnyje aprašoma nauja mokslui Ozadelpha nigella rūšis, aptikta Jungo miškų provincijoje, Bolivijoje (Pietų Amerika). Jos duomenys papildo šios kontroversiškos genties diagnostiką. Straipsnyje pateikiama išsami O. nigella suaugėlių, patino ir patelių genitalijų bei minų morfologijos dokumentacija. Aptariami Ozadelpha genties diagnostikos klausimai, išskiriami požymiai, leidžiantys identifikuoti taksonąWe describe a new species, Ozadelpha nigella Diškus & Stonis, sp. nov., a leaf miner on Symplocos Jacq. (Ericales: Symplocaceae), from the Yungas biogeographical province, South America. We briefly discuss the issues of diagnostics of the recently erected genus Ozadelpha van Nieukerken. The genus is now comprised of four named species having shared characters useful for efficient identification and genus recognition. The new species is illustrated with photographs of the adults, male genitalia and leaf minesBaltijos-Amerikos biotaksonomijos institutasMokytojų rengimo institutasVytauto Didžiojo universiteta
Maria Ligia Rodrigues Macedo - One of the best experts on this subject based on the ideXlab platform.
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insecticidal effect of labramin a lectin like protein isolated from seeds of the beach apricot tree labramia bojeri on the mediterranean flour moth ephestia kuehniella
Journal of Insect Science, 2012Co-Authors: Diego Stefani T Martinez, Maria Das Gracas Machado Freire, Paulo Mazzafera, Roberto Theodoro Araujojunior, Rafael Delmond Bueno, Maria Ligia Rodrigues MacedoAbstract:The objective of this work was to study the insecticidal effect of labramin, a protein that shows lectin—like properties. Labramin was isolated from seeds of the Beach Apricot tree, Labramia bojeri A. DC ex Dubard (Ericales: Sapotaceae), and assessed against the development of the Mediterranean flour moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), an important pest of stored products such as corn, wheat, rice, and flour. Results showed that labramin caused 90% larval mortality when incorporated in an artificial diet at a level of 1% (w/w). The presence of 0.25% labramin in the diet affected the larval and pupal developmental periods and the percentage of emerging adults. Treatments resulted in elevated levels of trypsin activity in midgut and fecal materials, indicating that labramin may have affected enzyme—regulatory mechanisms by perturbing peritrophic membranes in the midgut of is. kuehniella larvae. The results of dietary experiments with E. kuehniella larvae showed a reduced efficiency for the conversion of ingested and digested food, and an increase in approximate digestibility and metabolic cost. These findings suggest that labramin may hold promise as a control agent to engineer crop plants for insect resistance.
Jürg Schönenberger - One of the best experts on this subject based on the ideXlab platform.
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early floral development and androecium organization in the sarracenioid clade actinidiaceae roridulaceae and sarraceniaceae of Ericales
Botanical Journal of the Linnean Society, 2016Co-Authors: Stefan D Lofstrand, Maria Von Balthazar, Jürg SchönenbergerAbstract:The early floral development of Actinidia (A. arguta, A. callosa, A. chinensis and A. kolomikta; Actinidiaceae), Saurauia (S. montana, S. oldhamii, S. pittieri and S. subspinosa; Actinidiaceae), Roridula gorgonias (Roridulaceae) and Heliamphora nutans (Sarraceniaceae) was studied comparatively using scanning electron microscopy. Late stages of androecium development are additionally presented for Clematoclethra scandens (Actinidiaceae), Darlingtonia californica and Sarracenia leucophylla (Sarraceniaceae). Flowers are typically pentamerous and share a number of developmental features: perianth organs emerge in a clockwise or anticlockwise spiral sequence on the floral apex with relatively long plastochrons between successive organs, resulting in conspicuous size differences among perianth organs in early development; the perianth always consists of two differentiated whorls (unlike earlier interpretations of the perianth in Heliamphora); the androecium is polystemonous in most species and is initiated with leading stamens in alternipetalous positions; successive stamen primordia appear in a lateral succession until a ring‐like structure is formed; and the anthers become inverted shortly before anthesis. Later androecial development differs conspicuously between taxa and further proliferation may be centrifugal, centripetal and/or lateral. For Ericales, unusual features of floral development include: petals initiated in a spiral sequence (but later organized in a whorl) with comparatively long plastochrons between individual petals (except Saurauia); common occurrence of perianth organs in double positions in Actinidiaceae; and anthers that become inverted close to anthesis. The floral development in the sarracenioids is additionally compared with that of other families and clades in Ericales, further emphasizing the highly variable patterns of androecium development in the order.
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glandulocalyx upatoiensis a fossil flower of Ericales actinidiaceae clethraceae from the late cretaceous santonian of georgia usa
Annals of Botany, 2012Co-Authors: Jürg Schönenberger, Maria Von Balthazar, Masamichi Takahashi, Xianghui Xiao, Peter R Crane, Patrick S HerendeenAbstract:† Background and Aims Ericales are a major group of extant asterid angiosperms that are well represented in the Late Cretaceous fossil record, mainly by flowers, fruits and seeds. Exceptionally well preserved fossil flowers, here described as Glandulocalyx upatoiensis gen. & sp. nov., from the Santonian of Georgia, USA, yield new detailed evidence of floral structure in one of these early members of Ericales and provide a secure basis for comparison with extant taxa. † Methods The floral structure of several fossil specimens was studied by scanning electron microscopy (SEM), light microscopy of microtome thin sections and synchrotron-radiation X-ray tomographic microscopy (SRXTM). For direct comparisons with flowers of extant Ericales, selected floral features of Actinidiaceae and Clethraceae were studied with SEM. † Key Results Flowers of G. upatoiensis have five sepals with quincuncial aestivation, five free petals with quincuncial aestivation, 20‐28 stamens arranged in a single series, extrorse anther orientation in the bud, ventral anther attachment and a tricarpellate, syncarpous ovary with three free styles and numerous small ovules on axile, protruding-diffuse and pendant placentae. The calyx is characterized by a conspicuous indumentum of large, densely arranged, multicellular and possibly glandular trichomes. † Conclusions Comparison with extant taxa provides clear evidence for a relationship with core Ericales comprised of the extant families Actinidiaceae, Roridulaceae, Sarraceniaceae, Clethraceae, Cyrillaceae and Ericaceae. Within this group, the most marked similarities are with extant Actinidiaceae and, to a lesser degree, with Clethraceae. More detailed analyses of the relationships of Glandulocalyx and other Ericales from the Late Cretaceous will require an improved understanding of the morphological features that diagnose particular extant groups defined on the basis of molecular data.
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early floral development and androecium organization in fouquieriaceae Ericales
Plant Systematics and Evolution, 2005Co-Authors: Jürg Schönenberger, A GrenhagenAbstract:Early floral development with focus on the androecium was studied with the help of scanning electron microscopy and serial microtome sectioning in Fouquieria columnaris and F. splendens. Perianth organs appear in a spiral pattern on the floral apex. The spiral may be a clockwise or anti-clockwise. The androecium is best interpreted as two-whorled with all the stamens arranged in a single series. In F. splendens, two or more of the five epipetalous stamen positions are doubled, i.e. they are occupied by stamen pairs. Unusual features in the floral development of Fouquieriaceae include (1) a strong spiral component even in whorled organ categories and (2) a pronouncedly asymmetric floral apex during an early phase of floral development. From a phylogenetic point of view, it seems plausible that the common ancestor of Fouquieriaceae and its sister family Polemoniaceae was characterized by two alternating, pentamerous stamen-whorls.