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1. Alleviation of copper toxicity on chloroplast antioxidant capacity and photosystem II photochemistry of wheat by hydrogen sulfide

Author:
Dai, Haifang; Xu, Yajun; Zhao, Longfei; Shan, Changjuan
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 787-793
ISSN:
0100-8404
Subject:
antioxidant activity; ascorbate peroxidase; chlorophyll; chloroplasts; copper; fluorescence; glutathione peroxidase; glutathione-disulfide reductase; hydrogen peroxide; hydrogen sulfide; photochemistry; photosystem II; seedlings; superoxide dismutase; toxicity; wheat
Abstract:
... This study investigated the effect of H₂S on chloroplast antioxidant capacity and chlorophyll fluorescence of wheat seedlings under copper stress. The results showed that copper stress significantly increased the activities of ascorbate peroxidase (APX), glutathione reductase (GR), superoxide dismutase (SOD), glutathione peroxidase (GPX), and the contents of MDA and H₂O₂ in chloroplast and non-pho ...
DOI:
10.1007/s40415-016-0250-6

2. Alleviation of drought and salinity stresses on growth, physiology, biochemistry and quality of two Cucumis sativus L. cultivars by Si application

Author:
Ouzounidou, Georgia; Giannakoula, Anastasia; Ilias, Ilias; Zamanidis, Pantelis
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 531-539
ISSN:
0100-8404
Subject:
Cucumis sativus; antioxidant activity; chlorophyll; cucumbers; cultivars; drought; firmness; fruits; irrigation; leaves; lipid peroxidation; oxygen; photosynthesis; salinity; salt stress; silicon; sodium chloride; soil; texture; tissues; water stress
Abstract:
... The exposure of plants to high salinity and drought stresses significantly and negatively affected growth, photosynthesis, biochemistry as well as the texture and quality of cucumber fruits. The objective of this study was to determine whether cucumber grown at an increased salinity level or drought stress responds positively to the supply of Si. Two cucumber cultivars (Cucumis sativus L.) were gr ...
DOI:
10.1007/s40415-016-0274-y

3. Anatomy of the reproductive structures of Stenanona flagelliflora (Annonaceae)

Author:
Corona Velázquez, Tania Libertad; Andrés-Hernández, Agustina Rosa; Figueroa-Castro, Dulce María; Campos Villanueva, Álvaro
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 679-687
ISSN:
0100-8404
Subject:
flowering; stigma; Annonaceae; carpels; flagellum; flora; ovules; buds; anthers; histology; integument; perianth; cylinders; vascular bundles; trichomes; endosperm; mesocarp; conservation areas; Mexico; Colombia
Abstract:
... The genus Stenanona comprises 15 species distributed from Mexico to Colombia. Stenanona flagelliflora is the only species in which the reproductive structures are found on the flagellum, a unique phenomenon in the flora of Mexico. Our objective is to recognize and describe anatomical features of flowers and fruits that contribute to the systematics of the species. We collected floral buds in three ...
DOI:
10.1007/s40415-016-0252-4

4. Cerium improves the copper tolerance of turf grass Poa pratensis by affecting the regeneration and biosynthesis of ascorbate and glutathione in leaves

Author:
Liu, Runqiang; Shan, Changjuan; Gao, Yangfan; Wang, Jianhua; Xu, Zhaolin; Zhang, Lihang; Ma, Wenzhe; Tan, Runfa
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 779-785
ISSN:
0100-8404
Subject:
Poa pratensis; ascorbate peroxidase; ascorbic acid; biosynthesis; cerium; copper; electrolytes; glutamate-cysteine ligase; glutathione; glutathione dehydrogenase (ascorbate); glutathione-disulfide reductase; leaves; malondialdehyde; monodehydroascorbate reductase (NADH); seedlings; turf grasses
Abstract:
... This study investigated the effects of cerium on the regeneration and biosynthesis of ascorbate and glutathione in the leaves of turf grass Poa pratensis seedlings under copper (Cu) stress. The results showed that Cu stress increased the activities of ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDHAR), glutathione reductase (GR), L-galactono-1,4-l ...
DOI:
10.1007/s40415-015-0246-7

5. Changes in phytoplankton spatial and temporal dynamics in a Brazilian tropical oligotrophic reservoir after net cage installation

Author:
Rosini, Edna Ferreira; Tucci, Andréa; do Carmo, Clovis Ferreira; Rojas, Nilton Eduardo Torres; de Barros, Helenice Pereira; Mallasen, Margarete
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 569-581
ISSN:
0100-8404
Subject:
Microcystis aeruginosa; Rhodomonas; ammonium; biomass; cages; farm area; fish; fish culture; hydrodynamics; metabolism; multivariate analysis; nutrient content; phosphorus; phytoplankton; temporal variation; water quality; Brazil
Abstract:
... This study analyzed the phytoplankton community response and the spatial and temporal variation of abiotic variables caused by fish farming in net cages installed in Ilha Solteira reservoir, São Paulo, Brazil. Water samples were collected monthly (August 2011–July 2013), from the subsurface, at three sites: upstream from farming area (S1), farming area (S2), and downstream from farming area (S3) ( ...
DOI:
10.1007/s40415-016-0259-x

6. CMA band variability and physical mapping of 5S and 45S rDNA sites in Brazilian Cactaceae: Pereskioideae and Opuntioideae

Author:
Castro, Juliana P.; Medeiros-Neto, Enoque; Souza, Gustavo; Alves, Lânia I. F.; Batista, Fabiane R. C.; Felix, Leonardo P.
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 613-620
ISSN:
0100-8404
Subject:
4',6-diamidino-2-phenylindole; Opuntia stricta var. dillenii; Pereskia aculeata; Tacinga; cytotypes; diploidy; fluorescence in situ hybridization; heterochromatin; karyotyping; ribosomal DNA; synapomorphy; tetraploidy; Brazil
Abstract:
... Representatives of the Cactaceae subfamilies Pereskioideae and Opuntioideae from northeastern Brazil were studied using banding with the fluorochromes, CMA3 and DAPI, as well as with fluorescent in situ hybridization using 45S and 5S rDNA probes to identify the distributions of their heterochromatin and rDNA sites. Pereskia aculeata, P. bahiensis, P. grandifolia (Pereskioideae), Brasilopuntia bras ...
DOI:
10.1007/s40415-015-0248-5

7. Copper uptake and copper-induced physiological changes in the marine alga Cladophora prolifera (Roth.) Kütz. (Chlorophyta, Ulvophyceae)

Author:
Bačkorová, Miriam; Maslaňáková, Ivana; Bačkor, Martin
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 447-452
ISSN:
0100-8404
Subject:
Cladophora; algae; chlorophyll; copper; copper metabolism; fluorescence; pigments; potassium; proteins; thallus; thiobarbituric acid-reactive substances
Abstract:
... Green algae of the genus Cladophora have been reported as being bioindicators of metal contamination all over the world. The degree of total as well as intracellular copper (Cu) uptakes by the alga after 24-h prolonged exposure with 0 (control), 50 and 500 µM Cu doses, was compared with selected physiological markers. Increased intracellular Cu content in the Cladophora thalli was followed by decr ...
DOI:
10.1007/s40415-016-0251-5

8. Cyanobacteria in a eutrophicated reservoir in a semi-arid region in Brazil: dominance and microcystin events of blooms

Author:
Lins, Ruceline P. M.; Barbosa, Luciana G.; Minillo, Alessandro; De Ceballos, Beatriz S. O.
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 583-591
ISSN:
0100-8404
Subject:
Planktothrix agardhii; alkalinity; biomass; climatic factors; dissolved oxygen; electrical conductivity; eutrophication; microcystin-LR; nutrients; pH; photoperiod; semiarid zones; toxicity; Brazil
Abstract:
... In semi-arid regions, eutrophic waters and stable climatic conditions favor the dominance of cyanobacteria, with frequent blooms. In this study, we hypothesized that the biomass of cyanobacteria will be higher during the dry period and assessed toxic cyanobacteria and cyanotoxins in the Argemiro de Figueiredo Reservoir (Paraíba, Brazil). We conducted 22 samplings between August 2007 and July 2009 ...
DOI:
10.1007/s40415-016-0267-x

9. Determinants of variation in heath vegetation structure on coastal dune fields in northeastern South America

Author:
Silva, Augusto C.; Silva, José Luiz A.; Souza, Alexandre F.
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 605-612
ISSN:
0100-8404
Subject:
animals; biomass; cacti and succulents; calcium; carbon sequestration; edaphic factors; herbaceous plants; least squares; nitrogen content; salinity; soil pH; topography; vegetation; vegetation structure; woody plants; Brazil
Abstract:
... Despite its implications for carbon storage, animal conservation, and plant regeneration, the variation in the structure of heath vegetation in South America is still poorly studied. In this study, we aimed at examining the edaphic and topographic determinants of this variation along 85 plots (5 × 5 m) randomly distributed in a restinga heath vegetation occurring on coastal dune fields in northeas ...
DOI:
10.1007/s40415-016-0273-z

10. Different causes of photosynthetic decline and water status in different stages of girdling in Alhagi sparsifolia Shap. (Fabaceae)

Author:
Tang, Gang-liang; Li, Xiang-yi; Lin, Li-sha; Zeng, Fan-jiang
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 519-529
ISSN:
0100-8404
Subject:
Alhagi; abscisic acid; chlorophyll; girdling; leaf water potential; leaves; phloem; photochemistry; photosynthesis; starch; stomatal conductance; sugar content; water use efficiency
Abstract:
... Phloem girdling can cause decline of photosynthetic rate (Pn), and the reason for Pn decline had been attributed to the reduction of stomatal conductance (Gs) and end-product feedback inhibition. In order to explore the reason for Pn decline, the different stages of girdling—control, semi-girdling (SG), and full-girdling (FG)—were performed on Alhagi sparsifolia Shap. (Fabaceae) on the southern ri ...
DOI:
10.1007/s40415-016-0270-2

11. Direct and cross-recognition of lichenized Trebouxia Puymaly (Chlorophyta, Trebouxiophyceae) and Nostoc Vaucher ex Bornet (Cyanobacteria, Cyanophyceae) by their homologous and heterologous fungal lectins

Author:
Díaz, Eva M.; Cutrona, Carmen; Sánchez-Elordi, Elena; Legaz, María-Estrella; Vicente, Carlos
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 507-518
ISSN:
0100-8404
Subject:
Nostoc; Peltigera; Trebouxia; affinity chromatography; algae; arginase; cell walls; desorption; fungi; galactose; hexoses; lectins; lichens; ligands; mannose
Abstract:
... In this study, we have used affinity chromatography to purify the lectins from a chlorolichen, Evernia prunastri (L.) Ach., and a cyanolichen, Peltigera canina (Ach.) Schard. These species secrete lectins that display arginase activity in addition to their role as recognition proteins. We found that fluorescently labeled lectins display efficient binding to their ligands on the cell wall. Binding ...
DOI:
10.1007/s40415-016-0268-9

12. Effects of cadmium on the morphology, pigments, and ultrastructure of Palisada flagellifera (Ceramiales, Rhodophyta) cultivated in vitro

Author:
Simonetti, Brunna; Schmidt, Éder C.; Pereira, Débora T.; Bouzon, Zenilda L.; Ouriques, Luciane C.
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 465-473
ISSN:
0100-8404
Subject:
Ceramiales; bleaching; cadmium; cell walls; chlorophyll; culture media; defense mechanisms; discoloration; microscopy; necrosis; photons; photosynthesis; photosynthetically active radiation; phycobiliprotein; pigments; thallus; thylakoids; ultrastructure
Abstract:
... This study aimed to compare the effects of increasing concentrations of cadmium (Cd) on the growth rates, content of photosynthetic pigments, and ultrastructure of Palisada flagellifera (J. Agardh) K. W. Nam (Ceramiales, Rhodophyta). Plants were cultivated under photosynthetically active radiation (PAR) of 70 μmol photons m⁻² s⁻¹ with 0 (control), 2.5, 5.0, 7.5, 10 20, 40, and 60 μM of cadmium (Cd ...
DOI:
10.1007/s40415-016-0254-2

13. Effects of growth regulators on enzymatic and non-enzymatic antioxidants in leaves of two contrasting wheat cultivars under water stress

Author:
Mohammadi, Hamid; Moradi, Foad
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 495-505
ISSN:
0100-8404
Subject:
abscisic acid; alpha-tocopherol; antioxidant activity; ascorbate peroxidase; carotenoids; catalase; chlorophyll; cultivars; cytokinins; filling period; flowering; hormones; hydrogen peroxide; leaves; malondialdehyde; metabolism; oxidative stress; peroxidase; water stress; wheat
Abstract:
... Manipulating the levels of antioxidative defense system may affect leaf senescence and increase yield. Phytohormones, reactive oxygen species, and antioxidants interact in the regulation of plant metabolism. Therefore, the aim of this study was to find out whether the exogenous applications of BAP (a synthetic Cytokinin) and ABA to wheat cultivars subjected to water stress could influence the rate ...
DOI:
10.1007/s40415-016-0266-y

14. Efficiency of Trichoderma spp. as a growth promoter of cowpea (Vigna unguiculata) and analysis of phosphate solubilization and indole acetic acid synthesis

Author:
Chagas, Lillian França Borges; De Castro, Henrique Guilhon; Colonia, Brigitte Sthepani Orozco; De Carvalho Filho, Magno Rodrigues; Miller, Luciane De Oliveira; Chagas, Aloísio Freitas Junior
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 437-445
ISSN:
0100-8404
Subject:
Trichoderma; Vigna unguiculata; aerial parts; cowpeas; greenhouses; growth promotion; indole acetic acid; phosphorite; phosphorus; plant growth; planting; savanna soils; soil sampling; solubilization; tryptophan; Brazil
Abstract:
... The aim of this study was to determine the efficiency of Trichoderma spp. in promoting the growth of cowpea plants. Strains were isolated from Tocantins savannah soils. Twenty-one isolates were evaluated in vitro for their ability to solubilize calcium phosphate and synthesize indole acetic acid (IAA). The soil samples were characterized physicochemically before planting. Eleven isolates were sele ...
DOI:
10.1007/s40415-015-0247-6

15. Enhancing heterogenous expression and purification of bioactive Arabidopsis COI1 protein in tobacco

Author:
Ma, Sui; Wang, Fei; Li, Suhua; Huang, Xi
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 651-657
ISSN:
0100-8404
Subject:
Arabidopsis; F-box proteins; bioactive properties; gene expression; jasmonic acid; plant development; proteasome endopeptidase complex; signal transduction; tobacco; transcription factors; ubiquitination
Abstract:
... Jasmonate (JA) and its derivatives play an important role in plant development and defense. The JA signal receptor is an F-box protein COI1. COI1 combines with SKP1 and Cullin1 to form a SCFCᴼᴵ¹ complex that interacts with JAZ repressors after combining with JA leading to ubiquitination and degradation of JAZ1 by 26S proteasome. JA-related transcriptional factors are released to control the downst ...
DOI:
10.1007/s40415-016-0276-9

16. Exogenous 6-benzylaminopurine confers tolerance to low temperature by amelioration of oxidative damage in eggplant (Solanum melongena L.) seedlings

Author:
Chen, Jianlin; Wu, Xuexia; Yao, Xinfeng; Zhu, Zongwen; Xu, Shuang; Zha, Dingshi
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 409-416
ISSN:
0100-8404
Subject:
Solanum melongena; antioxidant activity; ascorbate peroxidase; ascorbic acid; benzyladenine; catalase; chlorophyll; cold stress; cold tolerance; cytokines; cytokinins; eggplants; glutathione; glutathione-disulfide reductase; lipid peroxidation; osmoregulation; peroxidase; plant growth; proline; reactive oxygen species; seedlings; stress tolerance; superoxide dismutase; temperature
Abstract:
... Low temperature is one of the primary constraints to plant production in many parts of the world. It is known that cytokines are involved in the regulation of plant abiotic stress tolerance/adaptation. In this study, the influence of 10 μM 6-benzylaminopurine (6-BA), a synthetic cytokinin, on the growth, oxidative damage, antioxidant defense system and osmoregulation responses of eggplant (Solanum ...
DOI:
10.1007/s40415-015-0241-z

17. Exogenous calcium alleviates cadmium-induced oxidative stress in rice (Oryza sativa L.) seedlings by regulating the antioxidant defense and glyoxalase systems : Calcium-induced cadmium stress tolerance in rice

Author:
Rahman, Anisur; Mostofa, Mohammad Golam; Nahar, Kamrun; Hasanuzzaman, Mirza; Fujita, Masayuki
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 393-407
ISSN:
0100-8404
Subject:
Oryza sativa; antioxidant activity; antioxidants; cadmium; calcium; calcium chloride; catalase; chlorosis; culture media; glutathione dehydrogenase (ascorbate); glutathione transferase; growth retardation; hydroponics; monodehydroascorbate reductase (NADH); oxidative stress; rice; seedlings; stress tolerance; superoxide dismutase; toxicity
Abstract:
... The present study was undertaken to investigate the regulatory role of exogenous application of calcium (Ca) in enhancing the antioxidant defense and glyoxalase systems in mitigating cadmium (Cd) stress in rice. Hydroponically grown 14-day-old rice (Oryza sativa L. cv. BRRI dhan29) seedlings were exposed to 0.25 and 0.5 mM CdCl₂ alone and in combination with 2.5 mM CaCl₂ for 3 days. Exposure to Cd ...
DOI:
10.1007/s40415-015-0240-0

18. Exogenous nitric oxide-induced germination associated with pinitol content in Hymenaea courbaril low vigour seeds

Author:
Zerlin, Juliana Kuroiva; da Cruz Centeno, Danilo; Gaspar, Marília
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 485-494
ISSN:
0100-8404
Subject:
Hymenaea courbaril; Neotropics; animals; carbon; cell walls; dormancy; gas chromatography-mass spectrometry; metabolism; models; nitric oxide; pinitol; polysaccharides; rain forests; root growth; seed germination; seedlings; seeds; trees; viability; vigor
Abstract:
... Nitric oxide (NO), a membrane-permeable free radical, has been reported as a potent signalling molecule in animals and plants. It is commonly accepted that NO induces dormancy release and promotes seed germination. However, few studies were carried out with seeds of tropical arboreal species, which present distinct characteristics compared to temperate model seeds, in order to confirm a broad role ...
DOI:
10.1007/s40415-016-0265-z

19. Foliar treatment with Lolium perenne (Poaceae) leaf extract alleviates salinity and nickel-induced growth inhibition in pea

Author:
Balal, Rashad Mukhtar; Shahid, Muhammad Adnan; Javaid, Muhammad Mansoor; Anjum, Muhammad Akbar; Ali, Hafiz Haider; Mattson, Neil Scott; Garcia-Sanchez, Francisco
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 453-463
ISSN:
0100-8404
Subject:
electrolytes; ascorbate peroxidase; gas exchange; lipid peroxidation; Pisum sativum; betaine; carbon dioxide; stomatal conductance; peas; proline; phytomass; photosynthesis; peroxidase; Lolium perenne; superoxide dismutase; water content; growth retardation; sodium chloride; toxicity; enzyme activity; antioxidant activity; antioxidants; salt stress; stomata; leaf extracts; glutathione-disulfide reductase; catalase; salinity; water use efficiency; nickel; osmotolerance; chlorophyll
Abstract:
... The plants of pea (Pisum sativum L.) were grown under NaCl and/or NiCl₂ stress, to comparatively evaluate stress-mitigating effects of pure proline and naturally proline-enriched Lolium perenne (L.) aqueous leaf extract. Both stress factors (salinity and nickel) significantly reduced plant biomass, chlorophyll content, photosynthetic activity, stomatal conductance, intercellular carbon dioxide (CO ...
DOI:
10.1007/s40415-016-0253-3

20. Genetic analysis across life stages of Metrodorea nigra (Rutaceae) in a population located in an urban landscape of Southeastern Brazil using a new set of microsatellite markers

Author:
Alzate-Marin, Ana Lilia; Bonifacio-Anacleto, Fernando; de Moraes Filho, Rômulo M.; Machado, Gabriel Pinheiro; Nazareno, Alison Gonçalves
Source:
Revista brasileira de botânica 2016 v.39 no.2 pp. 795-799
ISSN:
0100-8404
Subject:
Rutaceae; adults; adverse effects; alleles; conservation programs; genetic analysis; genetic markers; genetic variation; genomic libraries; landscapes; loci; microsatellite repeats; population genetics; rain forests; saplings; urban areas; Brazil
Abstract:
... Metrodorea nigra A. St.-Hil. (Rutaceae) is a submontane tropical tree species that develops preferably in the shade and innermost preserved regions of the semi-deciduous forests of Brazil; as a result, its presence can indicate good levels of conservation. Therefore, it is important to have a set of molecular markers to facilitate genetic studies on this species of tree. The goal of this study was ...
DOI:
10.1007/s40415-016-0255-1