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Machado KLDG, Faria DV, Duarte MBS, Silva LAS, de Oliveira TDR, Falcão TCA, Batista DS, Costa MGC, Santa-Catarina C, Silveira V, Romanel E, Otoni WC, Nogueira FTS. Plant age-dependent dynamics of annatto pigment (bixin) biosynthesis in Bixa orellana. J Exp Bot 2024; 75:1390-1406. [PMID: 37975812 DOI: 10.1093/jxb/erad458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
Age affects the production of secondary metabolites, but how developmental cues regulate secondary metabolism remains poorly understood. The achiote tree (Bixa orellana L.) is a source of bixin, an apocarotenoid used in diverse industries worldwide. Understanding how age-dependent mechanisms control bixin biosynthesis is of great interest for plant biology and for economic reasons. Here we overexpressed miRNA156 (miR156) in B. orellana to comprehensively study the effects of the miR156-SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) module on age-dependent bixin biosynthesis in leaves. Overexpression of miR156 in annatto plants (miR156ox) reduced BoSPL transcript levels, impacted leaf ontogeny, lessened bixin production, and increased abscisic acid levels. Modulation of expression of BoCCD4-4 and BoCCD1, key genes in carotenoid biosynthesis, was associated with diverting the carbon flux from bixin to abscisic acid in miR156ox leaves. Proteomic analyses revealed an overall low accumulation of most secondary metabolite-related enzymes in miR156ox leaves, suggesting that miR156-targeted BoSPLs may be required to activate several secondary metabolic pathways. Our findings suggest that the conserved BomiR156-BoSPL module is deployed to regulate leaf dynamics of bixin biosynthesis, and may create novel opportunities to fine-tune bixin output in B. orellana breeding programs.
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Affiliation(s)
- Kleiton Lima de Godoy Machado
- Departamento de Biologia Vegetal/Laboratório de Cultura de Tecidos Vegetais/BIOAGRO, Campus Universitário, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
| | - Daniele Vidal Faria
- Departamento de Biologia Vegetal/Laboratório de Cultura de Tecidos Vegetais/BIOAGRO, Campus Universitário, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
| | - Marcos Bruno Silva Duarte
- Departamento de Biologia Vegetal/Laboratório de Cultura de Tecidos Vegetais/BIOAGRO, Campus Universitário, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
| | - Lázara Aline Simões Silva
- Departamento de Biologia Vegetal/Laboratório de Cultura de Tecidos Vegetais/BIOAGRO, Campus Universitário, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
| | - Tadeu Dos Reis de Oliveira
- Laboratório de Biologia Celular e Tecidual (LBCT), Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Thais Castilho Arruda Falcão
- Laboratório de Genômica de Plantas e Bioenergia (PGEMBL), Departamento de Biotecnologia, Escola de Engenharia de Lorena (EEL), Universidade de São Paulo (USP), 12602-810, Lorena, SP, Brazil
| | - Diego Silva Batista
- Departamento de Agricultura, Universidade Federal da Paraíba, Campus III, 58220-000, Bananeiras, PB, Brazil
| | | | - Claudete Santa-Catarina
- Laboratório de Biologia Celular e Tecidual (LBCT), Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Vanildo Silveira
- Laboratório de Biotecnologia (LBT), CBB-UENF, Campos dos Goytacazes, RJ, Brazil
| | - Elisson Romanel
- Laboratório de Genômica de Plantas e Bioenergia (PGEMBL), Departamento de Biotecnologia, Escola de Engenharia de Lorena (EEL), Universidade de São Paulo (USP), 12602-810, Lorena, SP, Brazil
| | - Wagner Campos Otoni
- Departamento de Biologia Vegetal/Laboratório de Cultura de Tecidos Vegetais/BIOAGRO, Campus Universitário, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil
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Carvalho AA, Rocha AO, Carvalho DA, Silva LAS, Almeida MJO, Sarmento JLR. The Growth Pattern of Brazilian Canela-Preta Chickens with Different Plumages Reared in Two Rearing Systems. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2021-1591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Silva LAS, Sampaio VF, Barbosa LCS, Machado M, Flores-Borges DNA, Sales JF, de Oliveira DC, Mayer JLS, Kuster VC, Rocha DI. Albinism in plants - far beyond the loss of chlorophyll: Structural and physiological aspects of wild-type and albino royal poinciana (Delonix regia) seedlings. Plant Biol (Stuttg) 2020; 22:761-768. [PMID: 32544284 DOI: 10.1111/plb.13146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
The partial or complete loss of chlorophylls, or albinism, is a rare phenomenon in plants. In the present study, we provide the first report of the occurrence in albino Delonix regia seedlings and describe the morpho-physiological changes associated with albinism. Wild-type (WT) and albino seedlings were characterized. Leaflets samples were processed following common procedures for analysis with light, scanning and transmission electron microscopy. The chlorophyll a fluorescence parameters and the carbohydrate, lipid and soluble protein content were also determined in leaf and cotyledon samples of both albino and WT seedlings. Albino seedlings showed reduced growth. They also had lower chlorophyll and protein content in foliar tissues than WT seedlings, in addition to lower concentrations of lipids and carbohydrates stored in cotyledons. The chloroplasts of albino seedlings were poorly developed, with an undefined internal membrane system and the presence of plastoglobules. Wild-type seedlings had a uniseriate and hypoestomatic epidermis. The mesophyll was dorsiventral, consisting of a layer of palisade parenchyma and two to four layers of spongy parenchyma. In albino seedlings, the spongy parenchyma was compact, with few intercellular spaces, and the thickness of the mesophyll was larger, resulting in increased thickness of the leaf blade. Albino seedlings had higher stomatal density and number of pavement cells, although the stomata had smaller dimensions. In addition to the partial loss of chlorophylls, albino D. regia showed changes at physiological and structural levels, demonstrating the crucial nature of photosynthetic pigments during the development and differentiation of plant leaf tissues/cells.
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Affiliation(s)
- L A S Silva
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
| | - V F Sampaio
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
| | - L C S Barbosa
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
| | - M Machado
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
| | - D N A Flores-Borges
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - J F Sales
- Instituto Federal Goiano de Educação, Ciência e Tecnologia, Rio Verde, Brazil
| | - D C de Oliveira
- Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - J L S Mayer
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - V C Kuster
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
| | - D I Rocha
- Instituto de Ciências Biológicas, Universidade Federal de Jataí, Jataí, Brazil
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Araújo JMD, Silva LAS, Felix FB, Camargo EA, Grespan R. CCR3 antagonist impairs estradiol-induced eosinophil migration to the uterus in ovariectomized mice. ACTA ACUST UNITED AC 2019; 53:e8659. [PMID: 31859912 PMCID: PMC6915905 DOI: 10.1590/1414-431x20198659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 10/04/2019] [Indexed: 01/21/2023]
Abstract
Eosinophils are abundant in the reproductive tract, contributing to the remodeling and successful implantation of the embryo. However, the mechanisms by which eosinophils migrate into the uterus and their relationship to edema are still not entirely clear, since there are a variety of chemotactic factors that can cause migration of these cells. Therefore, to evaluate the role of CCR3 in eosinophil migration, ovariectomized C57BL/6 mice were treated with CCR3 antagonist SB 328437 and 17β-estradiol. The hypothesis that the CCR3 receptor plays an important role in eosinophil migration to the mouse uterus was confirmed, because we observed reduction in eosinophil peroxidase activity in these antagonist-treated uteruses. The antagonist also influenced uterine hypertrophy, inhibiting edema formation. Finally, histological analysis of the orcein-stained uteruses showed that the antagonist reduced eosinophil migration together with edema. These data showed that the CCR3 receptor is an important target for studies that seek to clarify the functions of these cells in uterine physiology.
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Affiliation(s)
- J M D Araújo
- Laboratório de Migração Celular, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - L A S Silva
- Laboratório de Migração Celular, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - F B Felix
- Laboratório de Migração Celular, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - E A Camargo
- Laboratório de Processo Inflamatório, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - R Grespan
- Laboratório de Migração Celular, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
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Silva LAS, Felix FB, Araujo JMD, Souza EV, Camargo EA, Grespan R. Agonistic activity of tamoxifen, a selective estrogen-receptor modulator (SERM), on arthritic ovariectomized mice. ACTA ACUST UNITED AC 2017; 51:e6799. [PMID: 29160416 PMCID: PMC5685064 DOI: 10.1590/1414-431x20176799] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 09/05/2017] [Indexed: 11/22/2022]
Abstract
Arthritis is positively associated with the decline of sex hormones, especially estrogen. Tamoxifen (TMX) is a selective estrogen receptor modulator, possessing agonist or antagonistic activity in different tissues. Thus, the objective of this study was to investigate the effect of TMX on the zymosan-induced arthritis model. Female Swiss normal and ovariectomized (OVX) mice were divided into groups and treated for five days with TMX (0.3, 0.9 or 2.7 mg/kg) or 17-β-estradiol (E2, 50 µg/kg). On the fifth day, arthritis was induced and 4 h later, leukocyte migration into joint cavities was evaluated. The neutrophil migration in OVX animals, but not in normal mice, treated with TMX (all tested doses) was significantly decreased compared with mice that received the vehicle (P≤0.05). Similarly, this effect was also demonstrated in the E2-treated group. Therefore, the present study demonstrates that TMX presented agonist effects in inhibiting neutrophil migration and preventing arthritis progression in OVX mice.
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Affiliation(s)
- L A S Silva
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - F B Felix
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - J M D Araujo
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - E V Souza
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - E A Camargo
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
| | - R Grespan
- Programa de Pós-Graduação em Ciências Fisiológicas, Departamento de Fisiologia, Universidade Federal de Sergipe, São Cristóvão, SE, Brasil
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