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Nassau BRRM, Mascarenhas PSC, Guimarães AG, Feitosa FM, Ferreira HM, Castro BMC, Zanuncio JC, Costa MR, Nietsche S. Inheritance of seedlessness and the molecular characterization of the INO gene in Annonaceae. BRAZ J BIOL 2021; 83:e246455. [PMID: 34161463 DOI: 10.1590/1519-6984.246455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/04/2021] [Indexed: 11/22/2022] Open
Abstract
The inheritance of the seedless fruit characteristic of Annona squamosa has not yet been explained. Molecular techniques may aid breeding programs, mainly in the assisted selection of the target gene. The INO gene may be related to seed development in these fruits. The objective of the present paper was to investigate the inheritance of seedlessness in the 'Brazilian seedless' sugar apple and INO gene conservation in Annona squamosa and Annona cherimola x Annona squamosa genotypes by assessing their homology with the INO database genes. The F1 generation was obtained by crossing the mutant 'Brazilian seedless' (male genitor) (P1) with the wild-type A. squamosa with seeds (M1 and M2, female genitors). The INO gene was studied in mutant and wild-type A. squamosa (P1, M1, M2 and M3) and in the Gefner atemoya (A. cherimola x A. squamosa) (M4) cultivar. The DNA was extracted from young leaves, and four sets of specific primers flanking the INO gene were amplified. The seedless characteristic was identified as stenospermatic in the fruits of parental P1, suggesting monogenic inheritance with complete dominance. High sequence similarity of the INO gene amplifications in the sugar apple accessions (M1, M2, M3) and the atemoya cultivar Gefner (M4) reinforces the hypothesis of their conservation.
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Affiliation(s)
- B R R M Nassau
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia, Diamantina, MG, Brasil
| | - P S C Mascarenhas
- Universidade Estadual de Montes Claros - UNIMONTES, Departamento de Ciências Agrárias, Janaúba, MG, Brasil
| | - A G Guimarães
- Universidade Federal da Grande Dourados - UFGD, Departamento de Agronomia, Dourados, MS, Brasil
| | - F M Feitosa
- Universidade Federal de Viçosa - UFV, Instituto de Biotecnologia Aplicada à Agropecuária - BIOAGRO, Departamento de Entomologia, Viçosa, MG, Brasil
| | - H M Ferreira
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia, Diamantina, MG, Brasil
| | - B M C Castro
- Universidade Federal de Viçosa - UFV, Instituto de Biotecnologia Aplicada à Agropecuária - BIOAGRO, Departamento de Entomologia, Viçosa, MG, Brasil
| | - J C Zanuncio
- Universidade Federal de Viçosa - UFV, Instituto de Biotecnologia Aplicada à Agropecuária - BIOAGRO, Departamento de Entomologia, Viçosa, MG, Brasil
| | - M R Costa
- Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Departamento de Agronomia, Diamantina, MG, Brasil
| | - S Nietsche
- Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil
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Groisman M, Ferreira HM, Frossard WM, de Menezes Filho LM, Harari ND. Clinical evaluation of hydroxyapatite-coated single-tooth implants: a 5-year retrospective study. Pract Proced Aesthet Dent 2001; 13:355-60; quiz 362. [PMID: 11504452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The use of implants to replace missing single teeth has become a valuable treatment option. This study presents a 5-year retrospective clinical analysis of single teeth replaced with hydroxyapatite-coated implants. Of the 271 cylinder and screw implants placed over this period, 12 were lost (survival rate = 95.57%). In addition to aesthetic compromise, the most frequent complication was loosening of the abutment screw. These results corroborate findings from the literature and suggest that the described procedure can be safely performed in daily restorative procedures.
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Affiliation(s)
- M Groisman
- Universidad do Gran Rio, Rio de Janeiro, Brazil.
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Medeiros RG, Soffner ML, Thomé JA, Cacais AO, Estelles RS, Salles BC, Ferreira HM, Lucena Neto SA, Silva FG, Filho EX. The production of hemicellulases by aerobic fungi on medium containing residues of banana plant as substrate. Biotechnol Prog 2000; 16:522-4. [PMID: 10835259 DOI: 10.1021/bp0000398] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trichoderma harzianum strains T4 and T6, Acrophialophora nainiana, and Humicola grisea var. thermoidea were screened for their ability to produce carbohydrate-degrading enzyme activities in a medium containing banana plant residue as the carbon source. The best balance of enzyme activities was obtained from cultures of H. grisea var. thermoidea. Xylanase activity from crude extract of A. nainiana had a maximum activity at pH 5.5-7.0 and a temperature range of 50-55 degrees C. It was stable up to 55 degrees C at pH 7.0 for at least 2 h. The fungi were also able to produce xylanase and pectinase activities when grown on extractives as substrate.
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Affiliation(s)
- R G Medeiros
- Laboratório de Enzimologia, Departamento de Biologia Celular, Universidade de Brasília, CEP 70910-900, Brasil
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