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 | Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
05/12/2023 |
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Data da última atualização: |
05/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BUENO, V. R.; GOSTEL, M. R.; HEIDEN, G. |
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Afiliação: |
VINICIUS R. BUENO, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; MORGAN R. GOSTEL, BOTANICAL RESEARCH INSTITUTE OF TEXAS; GUSTAVO HEIDEN, CPACT. |
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Título: |
The spiraling story of Tyleropappus and a new name for Calea |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Phytotaxa, v. 618, n. 2, p. 133-148, 2023. |
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ISSN: |
1179-3163 |
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DOI: |
https://doi.org/10.11646/phytotaxa.622.1.5 |
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Idioma: |
Inglês |
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Conteúdo: |
Tyleropappus was described in 1931 by Greenman and is characterized by its spiral, alternate leaves and epaleaceous receptacle. Throughout its taxonomic history, the genus was placed into the tribes Helenieae and Neurolaeneae, often treated as the sister genus of Geissopappus, which is currently a synonym of Calea. Later, Tyleropappus was synonymized with Calea; however, when its synonymization was proposed, the sole species in the genus, T. dichotomus, had not been synonymized under a previously described species nor properly transferred to Calea. Ongoing taxonomic studies in Neurolaeneae have provided opportunities to clarify the challenging taxonomic history of this monotypic genus. We confirm the synonymy of Tyleropappus in Calea; however, we recognize T. dichotomus as a distinct species that should be accepted in Calea. Nonetheless, the name C. dichotoma already exists, and is a synonym of C. ternifolia. Therefore, we propose the new name C. spiralis to accommodate this species, which is morphologically similar to C. linearifolia. The former can be distinguished from the latter by the spiral, alternate (vs. decussate) arrangement of leaves, receptacle epaleaceous (vs. oligopaleaceous) and cypselae hirsute (vs. glabrous). We also provide a detailed description of the species, the first map of its geographic occurrence, an illustration with diagnostic characters, and the first taxonomic key for the Nana clade of Calea. |
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Palavras-Chave: |
Calea. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01962naa a2200181 a 4500
001 2159166
005 2023-12-05
008 2023 bl uuuu u00u1 u #d
022 $a1179-3163
024 7 $ahttps://doi.org/10.11646/phytotaxa.622.1.5$2DOI
100 1 $aBUENO, V. R.
245 $aThe spiraling story of Tyleropappus and a new name for Calea$h[electronic resource]
260 $c2023
520 $aTyleropappus was described in 1931 by Greenman and is characterized by its spiral, alternate leaves and epaleaceous receptacle. Throughout its taxonomic history, the genus was placed into the tribes Helenieae and Neurolaeneae, often treated as the sister genus of Geissopappus, which is currently a synonym of Calea. Later, Tyleropappus was synonymized with Calea; however, when its synonymization was proposed, the sole species in the genus, T. dichotomus, had not been synonymized under a previously described species nor properly transferred to Calea. Ongoing taxonomic studies in Neurolaeneae have provided opportunities to clarify the challenging taxonomic history of this monotypic genus. We confirm the synonymy of Tyleropappus in Calea; however, we recognize T. dichotomus as a distinct species that should be accepted in Calea. Nonetheless, the name C. dichotoma already exists, and is a synonym of C. ternifolia. Therefore, we propose the new name C. spiralis to accommodate this species, which is morphologically similar to C. linearifolia. The former can be distinguished from the latter by the spiral, alternate (vs. decussate) arrangement of leaves, receptacle epaleaceous (vs. oligopaleaceous) and cypselae hirsute (vs. glabrous). We also provide a detailed description of the species, the first map of its geographic occurrence, an illustration with diagnostic characters, and the first taxonomic key for the Nana clade of Calea.
653 $aCalea
700 1 $aGOSTEL, M. R.
700 1 $aHEIDEN, G.
773 $tPhytotaxa$gv. 618, n. 2, p. 133-148, 2023.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/12/2023 |
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Data da última atualização: |
18/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
LEONARDO-SILVA, L.; SILVA, L. B. da; FERREIRA, E. P. de B.; REIS, K. F. D. N. S. dos; NAVES, P. L. F.; MARTIN-DIDONET, C. C. G. |
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Afiliação: |
LUCAS LEONARDO-SILVA, UEG; LARISSA B. DA SILVA, UEG; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; KARINA F. D. N. S. DOS REIS, UEG; PLINIO L. F. NAVES, UEG; CLAUDIA C. G. MARTIN-DIDONET, UEG. |
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Título: |
Assessment of morphophysiological and genotypic diversity of endophytic bacteria isolated from rice (Oryza sativa L.) plants. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Caatinga, v. 36, n. 4, p. 775-784, out./dez. 2023. |
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ISSN: |
1983-2125 |
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Idioma: |
Português |
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Conteúdo: |
Rice production in Brazil incurs high costs due to the significant use of agrochemicals. Some plant growth-promoting rhizobacteria (PGPR) can be used as alternative to fertilizers and phytosanitary products. Thus, the objective of this study was to characterize endophytic bacteria isolated from roots of rice plants. The isolates were characterized based on colony morphology, antibiotic resistance, carbon sources utilization, enzyme activity (catalase, amylase, protease, cellulase, and lipase), inorganic phosphate solubilization, and the 16S-23S rDNA intergenic region. Morphologically, 68% of the isolates presented a rapid growth rate, 46% presented abundant mucus production, and 77% formed viscous colonies. All isolates were resistant to nalidixic acid and 16% presented resistance to streptomycin. The majority (90%) used monosaccharides and disaccharides in carbon source assays. Most of the isolates (95%) were positive for catalase and 63.6% were positive for amylase, protease, lipase, and cellulase activities. Additionally, 59% of them were able to solubilize phosphate. The mean enzymatic index for amylase, cellulase, and protease was 2.8, 3.5, and 1.7 respectively. The similarity analysis revealed high diversity among the isolates, with similarity indices of 70% (based on morphological characteristics) and 60% (based on the intergenic region 16S-23S rDNA). Considering morphophysiological and genotypic characteristics, three promising isolates should be evaluated in studies under field conditions for the potential development of bioproducts to replace industrially manufactured inputs in rice crops. MenosRice production in Brazil incurs high costs due to the significant use of agrochemicals. Some plant growth-promoting rhizobacteria (PGPR) can be used as alternative to fertilizers and phytosanitary products. Thus, the objective of this study was to characterize endophytic bacteria isolated from roots of rice plants. The isolates were characterized based on colony morphology, antibiotic resistance, carbon sources utilization, enzyme activity (catalase, amylase, protease, cellulase, and lipase), inorganic phosphate solubilization, and the 16S-23S rDNA intergenic region. Morphologically, 68% of the isolates presented a rapid growth rate, 46% presented abundant mucus production, and 77% formed viscous colonies. All isolates were resistant to nalidixic acid and 16% presented resistance to streptomycin. The majority (90%) used monosaccharides and disaccharides in carbon source assays. Most of the isolates (95%) were positive for catalase and 63.6% were positive for amylase, protease, lipase, and cellulase activities. Additionally, 59% of them were able to solubilize phosphate. The mean enzymatic index for amylase, cellulase, and protease was 2.8, 3.5, and 1.7 respectively. The similarity analysis revealed high diversity among the isolates, with similarity indices of 70% (based on morphological characteristics) and 60% (based on the intergenic region 16S-23S rDNA). Considering morphophysiological and genotypic characteristics, three promising isolates should be evaluated in studies... Mostrar Tudo |
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Palavras-Chave: |
Extracellular enzymes; OCR 16S-23S; RDNA. |
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Thesagro: |
Arroz; Bactéria; Enzima; Fator de Crescimento; Oryza Sativa. |
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Thesaurus NAL: |
Genotype; Plant growth-promoting rhizobacteria; Rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159886/1/rev-caatinga-2023.pdf
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Marc: |
LEADER 02594naa a2200325 a 4500
001 2159886
005 2023-12-18
008 2023 bl uuuu u00u1 u #d
022 $a1983-2125
100 1 $aLEONARDO-SILVA, L.
245 $aAssessment of morphophysiological and genotypic diversity of endophytic bacteria isolated from rice (Oryza sativa L.) plants.$h[electronic resource]
260 $c2023
520 $aRice production in Brazil incurs high costs due to the significant use of agrochemicals. Some plant growth-promoting rhizobacteria (PGPR) can be used as alternative to fertilizers and phytosanitary products. Thus, the objective of this study was to characterize endophytic bacteria isolated from roots of rice plants. The isolates were characterized based on colony morphology, antibiotic resistance, carbon sources utilization, enzyme activity (catalase, amylase, protease, cellulase, and lipase), inorganic phosphate solubilization, and the 16S-23S rDNA intergenic region. Morphologically, 68% of the isolates presented a rapid growth rate, 46% presented abundant mucus production, and 77% formed viscous colonies. All isolates were resistant to nalidixic acid and 16% presented resistance to streptomycin. The majority (90%) used monosaccharides and disaccharides in carbon source assays. Most of the isolates (95%) were positive for catalase and 63.6% were positive for amylase, protease, lipase, and cellulase activities. Additionally, 59% of them were able to solubilize phosphate. The mean enzymatic index for amylase, cellulase, and protease was 2.8, 3.5, and 1.7 respectively. The similarity analysis revealed high diversity among the isolates, with similarity indices of 70% (based on morphological characteristics) and 60% (based on the intergenic region 16S-23S rDNA). Considering morphophysiological and genotypic characteristics, three promising isolates should be evaluated in studies under field conditions for the potential development of bioproducts to replace industrially manufactured inputs in rice crops.
650 $aGenotype
650 $aPlant growth-promoting rhizobacteria
650 $aRice
650 $aArroz
650 $aBactéria
650 $aEnzima
650 $aFator de Crescimento
650 $aOryza Sativa
653 $aExtracellular enzymes
653 $aOCR 16S-23S
653 $aRDNA
700 1 $aSILVA, L. B. da
700 1 $aFERREIRA, E. P. de B.
700 1 $aREIS, K. F. D. N. S. dos
700 1 $aNAVES, P. L. F.
700 1 $aMARTIN-DIDONET, C. C. G.
773 $tRevista Caatinga$gv. 36, n. 4, p. 775-784, out./dez. 2023.
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Embrapa Arroz e Feijão (CNPAF) |
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