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Teresa Terrazas - One of the best experts on this subject based on the ideXlab platform.
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clave dicotomica y distribucion del complejo de especies de Stenocereus griseus cactaceae
Revista Mexicana De Biodiversidad, 2019Co-Authors: Hernan Alvaradosizzo, Alejandro Casas, Hilda Julieta Arreolanava, Antonio Gonzalezrodriguez, Teresa TerrazasAbstract:Con el objetivo de distinguir las especies que forman parte del complejo de Stenocereus griseus (Cactaceae), se revisaron caracteres morfologicos, datos de localizacion en ejemplares de herbario y registros en bases de datos de biodiversidad. Se documentaron caracteristicas morfologicas de 307 ejemplares depositados en 7 herbarios y se proyectaron los registros geograficos mediante un sistema de informacion geografica considerando division politica y subregionalizacion fisiografica. Se reconocieron 19 caracteres diagnosticos mediante los cuales se genero una clave dicotomica, acompanada de descripciones y fotografias, con la cual es posible distinguir a los miembros del complejo de especies de Stenocereus griseus y a estos con respecto de otras especies del genero. Ademas, se generaron mapas que permitieron la actualizacion del conocimiento de la distribucion de las especies del complejo, asi como sus asociaciones biogeograficas. Los productos generados constituyen herramientas de gran utilidad taxonomica para este grupo de especies de dificil determinacion.
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Distribution of the Stenocereus griseus species complex (SGSC) taxa, as considered by Arreola-Nava [15].
2018Co-Authors: Hernán Alvarado-sizzo, Teresa Terrazas, Hilda Julieta Arreola-nava, Alejandro Casas, Fabiola Parra, Cristian SánchezAbstract:Distribution of the Stenocereus griseus species complex (SGSC) taxa, as considered by Arreola-Nava [15].
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anatomia caulinar de las especies del genero Stenocereus cactaceae
Acta Botánica Venezuelica (Venezuela) Num.2 Vol.28, 2015Co-Authors: Teresa Terrazas, Sofia Loza Cornejo, Hilda Arreola NavaAbstract:Se describio la anatomia caulinar de 22 especies del genero Stenocereus y se comparo con otras Cactoideae. Stenocereus presento una cuticula lisa y delgada, las celulas epidermicas presentaron divisiones oblicuas, distinguiendose S. stellatus, S. treleasei y S. zopilotensis por su abundancia. La existencia de cuerpos de silice en epidermis e hipodermis caracteriza al genero. La abundancia de celulas de mucilago es un atributo que comparten las especies de Stenocereus con su taxon hermano; su ubicacion en el cortex permitio reconocer dos grupos de especies. Destaca el desarrollo de la felodermis y la presencia de placa de perforacion multiple en elementos de vaso, caracteres descritos por primera vez para el genero. La combinacion celulas de mucilago y cuerpos de silice permite distinguir a las especies de Stenocereus de otros miembros de la familia Cactaceae.
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Fibrous wood in species of Cactaceae, cross sections, near the vascular cambium.
2015Co-Authors: Jorge Reyes-rivera, Gonzalo Canché-escamilla, Marcos Soto-hernández, Teresa TerrazasAbstract:Vessels embedded in a matrix of fibers with lignified rays except Opuntia streptacantha. (A) Cylindropuntia imbricata; (B) Lophocereus marginatus; (C) Myrtillocactus geometrizans; (D) Opuntia streptacantha: wood with vessels embedded in a matrix of fiber or parenchyma with intermixed WBTs and non lignified rays; (E) Pereskia lychnidiflora; (F) Stenocereus dumortieri. Bar is 200 μm; r = ray.
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anatomia de la madera y alometria de veinte especies de Stenocereus cactaceae
Anales del Instituto de Biología serie Botánica; Vol 74 No 002 (2003), 2011Co-Authors: Teresa Terrazas, Sofia Loza CornejoAbstract:WOOD ANATOMY OF Stenocereus WAS STUDIED TO EVALUATE IF THERE ARE DIFFERENCES AMONG SPECIES AND TO EVALUATE IF FIVE QUANTITATIVE WOOD FEATURES ARE CORRELATED WITH PLANT HEIGHT. THE RESULTS SHOWED THAT THE SPECIES STUDIED POSSES THE TYPICAL FIBROUS WOOD OF CACTACEAE. COMMON FEATURES TO ALL SPECIES ARE DIFFUSE POROSITY WITHOUT CONSPICUOUS GROWTH RINGS, LIBRIFORM FIBERS, PARATRACHEAL PARENCHYMA, AND HETEROGENEOUS RAYS WITH PERFORATED RAY CELLS. CORRELATION ANALYSIS REVEALED A POSITIVE ASSOCIATION AMONG FOUR WOOD CHARACTERS AND PLANT HEIGHT. IN GENERAL, IF INDIVIDUALS HAVE SHORT SIZE ( <3 M TALL) THEIR VESSELS ELEMENTS AND FIBERS DECREASE. IN CONTRAST, TALLER INDIVIDUALS SHOW LONGER VESSELS ELEMENTS AND FIBERS. THIS BEHAVIOR DOES NOT OCCUR FOR RAY HEIGHT, SINCE SHRUBS LIKE S.BENECKEI OR TALL TREES AS FOR S. MARTINEZII POSSESS RAYS OF SIMILAR SIZE. THERE ARE NO CHARACTERS THAT HELP TO DISTINGUISH AMONG GROUPS OF SPECIES OF Stenocereus, EXCEPT FOR S. EICHLAMII, WHICH POSSESSES THE TALLEST RAYS.
Kunio Takahashi - One of the best experts on this subject based on the ideXlab platform.
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Amyloid β aggregation inhibitory activity of triterpene saponins from the cactus Stenocereus pruinosus
Journal of Natural Medicines, 2020Co-Authors: Koji Fujihara, Kiyotaka Koyama, Kunio Takahashi, Takuya Shimoyama, Ryo Kawazu, Hiroaki Sasaki, Kaoru KinoshitaAbstract:Six new triterpene saponins ( 1 – 5 , 7 ) and 3 known saponins ( 6 , 8 , 9 ) were isolated from MeOH extracts of the cactus Stenocereus pruinosus. The structures of the isolated saponins were elucidated using MS, IR, and comprehensive NMR measurements. To develop drugs for treating Alzheimer’s disease (AD) on the basis of the amyloid cascade hypothesis, the isolated saponins were evaluated for inhibition of BACE1 activity and amyloid beta (Aβ) aggregation using thioflavin-T assay, and triterpenes as an aglycone moiety and an alkaline hydrolysate of the saponins were also evaluated. One saponin, stenoside A ( 7 ), exhibited inhibitory activity related to Aβ aggregation and its degree of Aβ aggregation was 40.6% at 100 μM. Graphic abstract
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New Triterpenoid Saponins from Stenocereus eruca.
ChemInform, 2012Co-Authors: Kazutaka Kakuta, Kiyotaka Koyama, Kaoru Kinoshita, Takeshi Koike, Satoru Ito, Kunio TakahashiAbstract:isolation and structure elucidation of eight new triterpenoid saponins, namely stellatoside C (Ib) and its methyl ester (Ic), stellatoside D (Id), stellatoside E (Ia), stellatoside B methyl ester (Ie), thurberoside A (II), phillyriside A (III) and treleaseside A (IV)
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New triterpene saponins from Stenocereus eruca (Cactaceae)
Journal of Natural Medicines, 2007Co-Authors: Sachie Okazaki, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Hiroshi YuasaAbstract:Two new triterpene saponins, named stellatoside B ( 1 ) and erucasaponin A ( 2 ), were isolated from a cactaceous plant, Stenocereus eruca A. C. Gibson & K. E. Horak ( Machaerocereus eruca Br. & R.). The structures of 1 and 2 were elucidated as 3- O -β- d -xylopyranosyl-(1→2)-β- d -glucopyranosyl-(1→2)-β- d -glucuronopyranosyl stellatogenin and 3- O -α- l -rhamnopyranosyl-(1→2)-[α- l -rhamnopyranosyl-(1→3)]-β- d -glucuronopyranosyl betulinic acid 28- O -α- l -rhamnopyranosyl ester, respectively, on the basis of their spectroscopic data.
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Triterpenoid saponins from cultural plants of Stenocereus stellatus (Cactaceae)
Journal of Natural Medicines, 2005Co-Authors: Takeo Imai, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Sachie Okazaki, Hiroshi YuasaAbstract:A new triterpenoid saponin, named stellatoside A (1), and a known saponin (2), were isolated from cultural plants of the cactus Stenocereus stellatus (Ludwig G. K. Pfeiffer) V. Riccobono. The structure of 1 was determined to be a stellatogenin 3-O-α-l-rhamnopyranosyl(1→4)-α-l-rhamnopyranosyl(1→2)-β-d-glucuronopyranoside by spectroscopic methods. This is the first study to examine the substances of the cultural plants of cacti.
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New Triterpenes from Cactaceous Plants
Journal of Natural Products, 1993Co-Authors: Kiyotaka Koyama, Toshiyuki Yama, Kaoru Kinoshita, Kunio Takahashi, Norio Kondo, Hiroshi YuasaAbstract:A new lupane-type triterpenoid, 16β-hydroxystellatogenin [1], and a new oleanane-type triterpenoid, machaerogenin [2], were isolated from the hydrolysates of the glycosides of the aerial parts of Stenocereus stellatus and Machaerocerus eruca, respectively
Kaoru Kinoshita - One of the best experts on this subject based on the ideXlab platform.
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Amyloid β aggregation inhibitory activity of triterpene saponins from the cactus Stenocereus pruinosus
Journal of Natural Medicines, 2020Co-Authors: Koji Fujihara, Kiyotaka Koyama, Kunio Takahashi, Takuya Shimoyama, Ryo Kawazu, Hiroaki Sasaki, Kaoru KinoshitaAbstract:Six new triterpene saponins ( 1 – 5 , 7 ) and 3 known saponins ( 6 , 8 , 9 ) were isolated from MeOH extracts of the cactus Stenocereus pruinosus. The structures of the isolated saponins were elucidated using MS, IR, and comprehensive NMR measurements. To develop drugs for treating Alzheimer’s disease (AD) on the basis of the amyloid cascade hypothesis, the isolated saponins were evaluated for inhibition of BACE1 activity and amyloid beta (Aβ) aggregation using thioflavin-T assay, and triterpenes as an aglycone moiety and an alkaline hydrolysate of the saponins were also evaluated. One saponin, stenoside A ( 7 ), exhibited inhibitory activity related to Aβ aggregation and its degree of Aβ aggregation was 40.6% at 100 μM. Graphic abstract
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New Triterpenoid Saponins from Stenocereus eruca.
ChemInform, 2012Co-Authors: Kazutaka Kakuta, Kiyotaka Koyama, Kaoru Kinoshita, Takeshi Koike, Satoru Ito, Kunio TakahashiAbstract:isolation and structure elucidation of eight new triterpenoid saponins, namely stellatoside C (Ib) and its methyl ester (Ic), stellatoside D (Id), stellatoside E (Ia), stellatoside B methyl ester (Ie), thurberoside A (II), phillyriside A (III) and treleaseside A (IV)
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New triterpene saponins from Stenocereus eruca (Cactaceae)
Journal of Natural Medicines, 2007Co-Authors: Sachie Okazaki, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Hiroshi YuasaAbstract:Two new triterpene saponins, named stellatoside B ( 1 ) and erucasaponin A ( 2 ), were isolated from a cactaceous plant, Stenocereus eruca A. C. Gibson & K. E. Horak ( Machaerocereus eruca Br. & R.). The structures of 1 and 2 were elucidated as 3- O -β- d -xylopyranosyl-(1→2)-β- d -glucopyranosyl-(1→2)-β- d -glucuronopyranosyl stellatogenin and 3- O -α- l -rhamnopyranosyl-(1→2)-[α- l -rhamnopyranosyl-(1→3)]-β- d -glucuronopyranosyl betulinic acid 28- O -α- l -rhamnopyranosyl ester, respectively, on the basis of their spectroscopic data.
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Triterpenoid saponins from cultural plants of Stenocereus stellatus (Cactaceae)
Journal of Natural Medicines, 2005Co-Authors: Takeo Imai, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Sachie Okazaki, Hiroshi YuasaAbstract:A new triterpenoid saponin, named stellatoside A (1), and a known saponin (2), were isolated from cultural plants of the cactus Stenocereus stellatus (Ludwig G. K. Pfeiffer) V. Riccobono. The structure of 1 was determined to be a stellatogenin 3-O-α-l-rhamnopyranosyl(1→4)-α-l-rhamnopyranosyl(1→2)-β-d-glucuronopyranoside by spectroscopic methods. This is the first study to examine the substances of the cultural plants of cacti.
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New Triterpenes from Cactaceous Plants
Journal of Natural Products, 1993Co-Authors: Kiyotaka Koyama, Toshiyuki Yama, Kaoru Kinoshita, Kunio Takahashi, Norio Kondo, Hiroshi YuasaAbstract:A new lupane-type triterpenoid, 16β-hydroxystellatogenin [1], and a new oleanane-type triterpenoid, machaerogenin [2], were isolated from the hydrolysates of the glycosides of the aerial parts of Stenocereus stellatus and Machaerocerus eruca, respectively
Hiroshi Yuasa - One of the best experts on this subject based on the ideXlab platform.
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New triterpene saponins from Stenocereus eruca (Cactaceae)
Journal of Natural Medicines, 2007Co-Authors: Sachie Okazaki, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Hiroshi YuasaAbstract:Two new triterpene saponins, named stellatoside B ( 1 ) and erucasaponin A ( 2 ), were isolated from a cactaceous plant, Stenocereus eruca A. C. Gibson & K. E. Horak ( Machaerocereus eruca Br. & R.). The structures of 1 and 2 were elucidated as 3- O -β- d -xylopyranosyl-(1→2)-β- d -glucopyranosyl-(1→2)-β- d -glucuronopyranosyl stellatogenin and 3- O -α- l -rhamnopyranosyl-(1→2)-[α- l -rhamnopyranosyl-(1→3)]-β- d -glucuronopyranosyl betulinic acid 28- O -α- l -rhamnopyranosyl ester, respectively, on the basis of their spectroscopic data.
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Triterpenoid saponins from cultural plants of Stenocereus stellatus (Cactaceae)
Journal of Natural Medicines, 2005Co-Authors: Takeo Imai, Kiyotaka Koyama, Kaoru Kinoshita, Kunio Takahashi, Sachie Okazaki, Hiroshi YuasaAbstract:A new triterpenoid saponin, named stellatoside A (1), and a known saponin (2), were isolated from cultural plants of the cactus Stenocereus stellatus (Ludwig G. K. Pfeiffer) V. Riccobono. The structure of 1 was determined to be a stellatogenin 3-O-α-l-rhamnopyranosyl(1→4)-α-l-rhamnopyranosyl(1→2)-β-d-glucuronopyranoside by spectroscopic methods. This is the first study to examine the substances of the cultural plants of cacti.
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New Triterpenes from Cactaceous Plants
Journal of Natural Products, 1993Co-Authors: Kiyotaka Koyama, Toshiyuki Yama, Kaoru Kinoshita, Kunio Takahashi, Norio Kondo, Hiroshi YuasaAbstract:A new lupane-type triterpenoid, 16β-hydroxystellatogenin [1], and a new oleanane-type triterpenoid, machaerogenin [2], were isolated from the hydrolysates of the glycosides of the aerial parts of Stenocereus stellatus and Machaerocerus eruca, respectively
Cesar Del C Lunamorales - One of the best experts on this subject based on the ideXlab platform.
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postharvest quality soluble phenols betalains content and antioxidant activity of Stenocereus pruinosus and Stenocereus stellatus fruit
Postharvest Biology and Technology, 2016Co-Authors: Leticia Garciacruz, Salvador Valleguadarrama, Yolanda Salinasmoreno, Cesar Del C LunamoralesAbstract:Abstract Fruit of the Stenocereus genus have good acceptance and high potential in the fresh fruit market. However, their use is limited to regional production areas due to they are highly perishable and the postharvest behavior has not been studied. The objective of the work was to characterize morphological, physiological, physical, and chemically, red and orange fruit of Stenocereus pruinosus , and red and white fruit of Stenocereus stellatus in postharvest. Storage during 10 d at 24 °C was carried out and shelf life was estimated in six days. Respiration rate suggested non-climacteric behavior. Color, acidity, pH, soluble phenols content, and betalains content distinguished fruit. These variables, besides total soluble solids, remained without significant changes throughout the storage period, but weight loss, firmness, and total sugar content experimented modification. Antioxidant activity was highest in red fruit.
