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  • 1
    Online Resource
    Online Resource
    Seminal and Nodal Roots of Barley Differ in Anatomy, Proteome and Nitrate Uptake Capacity
    Oxford University Press (OUP) ; 2020
    In:  Plant and Cell Physiology Vol. 61, No. 7 ( 2020-07-01), p. 1297-1308
    Details
    In: Plant and Cell Physiology, Oxford University Press (OUP), Vol. 61, No. 7 ( 2020-07-01), p. 1297-1308
    Abstract: The root system of barley plants is composed of embryogenic, seminal roots as well as lateral and nodal roots that are formed postembryonically from seminal roots and from the basal part of shoots, respectively. Due to their distinct developmental origin, seminal and nodal roots may differ in function during plant development; however, a clear comparison between these two root types has not yet been undertaken. In this study, anatomical, proteomic and physiological traits were compared between seminal and nodal roots of similar developmental stages. Nodal roots have larger diameter, larger metaxylem area and a larger number of metaxylem vessels than seminal roots. Proteome profiling uncovered a set of root-type-specific proteins, including proteins related to the cell wall and cytoskeleton organization, which could potentially be implicated with differential metaxylem development. We also found that nodal roots have higher levels of auxin, which is known to trigger metaxylem development. At millimolar nitrate supply, nodal roots had approximately 2-fold higher nitrate uptake and root-to-shoot translocation capacities than seminal roots, whereas no differences were found at micromolar nitrate supply. Since these marked differences were not reflected by the transcript levels of low-affinity nitrate transporter genes, we hypothesize that the larger metaxylem volume of nodal roots enhances predominantly the low-affinity uptake and translocation capacities of nutrients that are transported with the bulk flow of water, like nitrate.
    Type of Medium: Online Resource
    ISSN: 0032-0781 , 1471-9053
    URL: Article
    DOI: 10.1093/pcp/pcaa059
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 2020758-X
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Maturação da maçã ‘Fuji’ em função do atraso na colheita e da aplicação pré-colheita de aminoetoxivinilglicina
    FapUNIFESP (SciELO) ; 2004
    In:  Ciência Rural Vol. 34, No. 3 ( 2004-06), p. 737-742
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 34, No. 3 ( 2004-06), p. 737-742
    Abstract: This research was carried out with the aim evaluating the effect of preharvest treatment with aminoethoxyvynilglycine and harvest delay on fruit drop and maturation of apple cultivar Fuji. The treatments were three doses of aminoethoxyvynilglycine (0,90 e 125g.ha-1) combined with three harvest dates (195, 204, 225 days after full bloom). No interaction between doses of aminoethoxyvynilglycine and harvest date was found. The application of aminoethoxyvynilglycine in the apple cultivar Fuji maintained greener ground skin color, reduced ethylene production, respiration rate and watercore incidence. Delaying fruit harvest showed lower respiration, better red color and higher total solids soluble. In addition to this, late harvest caused higher fruit drop, skin yellowing, high watercore incidence, high starch index, high ethylene production, low flesh firmness and low titratable acidity.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782004000300013
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
    detail.hit.zdb_id: 2025834-3
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  • 3
    Online Resource
    Online Resource
    Condições de atmosfera controlada para a maçã ‘Pink Lady’
    FapUNIFESP (SciELO) ; 2005
    In:  Ciência Rural Vol. 35, No. 3 ( 2005-06), p. 504-509
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 35, No. 3 ( 2005-06), p. 504-509
    Abstract: The objective of this work was to evaluate the effect of temperatures and O2 and CO2 partial pressures on the quality of ‘Pink Lady’ apples (Malus domestica Borkh.) during controlled atmosphere storage. The following treatments were evaluated: 1.5kPa of O2 + 1.0kPa of CO2 at -0.5°C, and 1.5kPa of O2 + 1.0kPa of CO2; 1.5kPa of O2 + 2.0kPa of CO2; 1.0kPa of O2 + 1.0kPa of CO2; 1.0kPa of O2 + 〈 0.5kPa of CO2; cold atmosphere (20.8kPa of O2 + 〈 0.5kPa of CO2) at +0.5°C. Quality evaluations were carried out after nine months of storage followed by seven days of shelf-life at 20°C. Fruits kept at controlled atmosphere conditions showed the lowest occurrence of rots, the highest flesh firmness and the highest total soluble solid, compared to cold stored fruits. The best partial pressure to keep the quality of ‘Pink Lady’ apple were 1.5kPa of O2 + 1.0kPa of CO2 at -0.5°C, and 1.5kPa of O2 + 1.0kPa of CO2; 1.5kPa of O2 + 2.0kPa of CO2 at +0.5°C. On the other hand, the partial pressures 1.0kPa of O2 + 1.0kPa of CO2 and 1.0kPa of O2 + 〈 0.5kPa of CO2 showed the highest occurrence of rots and senescent breakdown incidence, respectively. Controlled atmosphere conditions, compared to cold stored, kept higher quality of the ´Pink Lady` apple
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782005000300003
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2005
    detail.hit.zdb_id: 2025834-3
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  • 4
    Online Resource
    Online Resource
    Conseqüência da umidade relativa durante o armazenamento refrigerado e em atmosfera controlada na qualidade da maçã 'Gala'
    FapUNIFESP (SciELO) ; 2005
    In:  Ciência Rural Vol. 35, No. 5 ( 2005-10), p. 1197-1200
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 35, No. 5 ( 2005-10), p. 1197-1200
    Abstract: The objective was to evaluate the effect of relative humidity in cold and controlled atmosphere storage on the quality of 'Gala' apples. The evaluated treatments were: cold storage + high humidity (96%), cold storage + low humidity (90%), controlled atmosphere + high humidity (96%), controlled atmosphere + low humidity (90%). Fruit of all treatments were stored at 0.5°C and the controlled atmosphere conditions was 1.2kPa O2 + 3.0kPa CO2. After seven months, fruit stored in low humidity had smaller incidence of fruit cracking, but higher shriveling index. After five days at 20°C, fruit maintained in cold storage and in controlled atmosphere with low humidity, showed lower decay incidence and less fruit cracking. Flesh breakdown and mealiness was not influenced by relative humidity in storage room.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782005000500034
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2005
    detail.hit.zdb_id: 2025834-3
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  • 5
    Online Resource
    Online Resource
    Qualidade de melões (Cucumis melo L. var. cantalupensis Naud.), híbrido Torreon, produzidos em hidroponia e armazenados em embalagens de polietileno
    FapUNIFESP (SciELO) ; 2006
    In:  Ciência Rural Vol. 36, No. 4 ( 2006-08), p. 1143-1149
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 36, No. 4 ( 2006-08), p. 1143-1149
    Abstract: This study was carried out to evaluate the permeability to O2 and CO2, and gas composition (O2, CO2 and ethylene) inside packages of different thickness and density polyethylene films. Moreover, the physical and chemical quality of Torreon hybrid melon fruit (Cucumis melo L. var. cantalupensis Naud.) grown in a Nutrient Film Technique hydroponic system and stored within polyethylene packages were evaluated. Evaluated treatments were: (1) cold storage (control); packaging with (2) low-density polyethylene (LDPE) of 40µm; (3) LDPE of 60µm; (4) LDPE of 90µm; (5) medium-density polyethylene (MDPE) of 40µm; (6) MDPE of 60µm. Fruits were stored during 25 days at 3.8±0.2°C plus two days of shelf-life at 20°C. LDPE of 60 and 90µm and MDPE of 60µm had lower CO2-permeability, allowing the higher CO2 concentrations inside the packages. LDPE of 90µm had the lowest O2-permeability. Lower ethylene concentration was observed in 40µm-LDPE bags. Packaging decreased drastically fruit weight loss, when compared with non-packaged fruits. Flesh firmness was higher in fruits stored in 40µm-LDPE, but was not different from 40µm-MDPE-stored fruits. Rot incidence in turn was significantly lower in fruits stored in 60µm-LDPE. In general, packaging of ‘Torreon’ melon fruit, grown in a hydroponic system, with the evaluated polyethylene films allowed similar physical and chemical quality.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782006000400016
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2006
    detail.hit.zdb_id: 2025834-3
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  • 6
    Online Resource
    Online Resource
    Maçã 'Gala' armazenada em atmosfera controlada e tratada com aminoetoxivinilglicina e ethephon
    FapUNIFESP (SciELO) ; 2005
    In:  Pesquisa Agropecuária Brasileira Vol. 40, No. 9 ( 2005-09), p. 837-843
    Details
    In: Pesquisa Agropecuária Brasileira, FapUNIFESP (SciELO), Vol. 40, No. 9 ( 2005-09), p. 837-843
    Abstract: The objective of this work was to evaluate the effect of preharvest sprays of aminoethoxyvinylglycine (AVG) combined or not with ethephon on the quality of 'Gala' apples stored in controlled atmosphere. The treatments were: control, ethephon (140 g ha-1), AVG (125 g ha-1), AVG (125 g ha-1) + ethephon (140 g ha-1), AVG (95 g ha-1) and AVG (95 g ha-1) + ethephon (140 g ha-1). These treatments were combined with harvest date at 131, 138 and 145 days after full bloom. The AVG and ethephon were applied 30 and 7 days before the first harvest, respectively. The application of AVG, combined or not with ethephon, afforded fruits with higher flesh firmness, greener peel color, reduced rot and physiological disorders incidence, lowered ethylene production and respiration. Fruits treated with ethephon showed a quality like control fruits. Application of ethephon in AVG treated plants did not affect the efficiency of AVG in the quality of apples after storage.
    Type of Medium: Online Resource
    ISSN: 0100-204X
    URL: Article
    DOI: 10.1590/S0100-204X2005000900001
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2005
    detail.hit.zdb_id: 2053197-7
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  • 7
    Online Resource
    Online Resource
    Qualidade da maçã "Gala" armazenada em atmosfera controlada associada à absorção e ao controle da síntese e da ação do etileno
    FapUNIFESP (SciELO) ; 2008
    In:  Ciência Rural Vol. 38, No. 8 ( 2008-11), p. 2151-2156
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 38, No. 8 ( 2008-11), p. 2151-2156
    Abstract: This research aimed to evaluate the effect of inhibition the ethylene biosynthesis at the pre-harvest stage, the ethylene action and the absorption from the controlled atmosphere storage room on the quality of 'Gala' apples. The experimental design was entirely randomized, with four replicates and the experimental unit composed by 25 fruits. The treatments were: (1) CA storage only (control); (2) pre-harvest application of AVG; (3) AVG + postharvest treatment with 1-MCP; (4) 1-MCP; (5) AVG + ethylene absorption during the storage period; and (6) ethylene absorption. Fruit quality was evaluated after 8 months of storage (CA; 1.2 kPa O2 + 2.5 kPa CO2 at 0°C) and after 7 days at 20°C. AVG-treated fruits showed lower ACC oxidase activity. AVG + 1-MCP and AVG + ethylene absorption decreased the ethylene production until 5 days of shelf-life and maintained higher flesh firmness. AVG-treated fruits had greener skin color, independently of the postharvest handling, showing that the change in the skin background colour is highly related to the pre-harvest ethylene production. The conclusion of this research is that the pre-harvest treatment of fruits with AVG associated with the absorption of ethylene during the storage is more efficient for controlling the ripening process in 'Gala' apples, nevertheless the application of AVG associated with postharvest application of 1-MCP is also efficient.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782008000800010
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2008
    detail.hit.zdb_id: 2025834-3
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  • 8
    Online Resource
    Online Resource
    Métodos para predição de bitter pit em maçãs 'Fuji' e 'Braeburn'
    FapUNIFESP (SciELO) ; 2009
    In:  Ciência Rural Vol. 39, No. 4 ( 2009-04-03), p. 1032-1038
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 39, No. 4 ( 2009-04-03), p. 1032-1038
    Abstract: Experiments were carried out with objective to evaluate the efficiency of methods for bitter pit prediction in 'Fuji' and 'Braeburn' apples sampled at two harvest dates. Fruits from 6 orchards, three for each cultivar, were sampled earlier (20 days before harvest) and at commercial harvest date. The prediction methods assessed were: infiltration of apples with 0.10M MgCl2 solution containing 0.01% Tween-20 and 0.4M sorbitol; and immersion of fruits in 2.500nL L-1 ethephon solution plus 0.01% Tween-20. Four replications of 25 fruits of each orchard were stored on controlled atmosphere (CA) during five months plus 12 days at 20°C in order to assess the real bitter pit occurrence. Both methods showed incidence and severity similar to real bitter pit occurrence after storage for both cultivars sampled 20 days before harvest. On the other hand, none method was able to predict the incidence of bitter pit after CA storage for fruits sampled at commercial harvest. The magnesium infiltration and immersion of fruits on ethephon only are efficient to predict bitter pit incidence on fruits when sampled 20 days before commercial harvest.
    Type of Medium: Online Resource
    ISSN: 1678-4596
    URL: Article
    DOI: 10.1590/S0103-84782009005000048
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2009
    detail.hit.zdb_id: 2025834-3
    SSG: 7,36
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  • 9
    Online Resource
    Online Resource
    Thidiazuron affects the quality of 'Gala' apples stored under controlled atmosphere
    FapUNIFESP (SciELO) ; 2010
    In:  Ciência Rural Vol. 40, No. 4 ( 2010-04), p. 813-819
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 40, No. 4 ( 2010-04), p. 813-819
    Abstract: O objetivo deste trabalho foi avaliar o efeito da aplicação de thidiazuron (TDZ) na qualidade de maçãs 'Gala' armazenadas em condições de atmosfera controlada (AC). Avaliou-se o efeito do TDZ nas doses de 0, 10, 20 e 40g ha-1 (i.a.), aplicadas no pleno florescimento. Após a colheita, os frutos foram armazenados em condições de AC com 1,0+2,5; 1,5+2,5 ou 1,5+5,0 (kPa de O2+kPa de CO2), ambas a 0,5°C. Além disso, a pressão parcial de 1,5kPa de O2+2,5kPa de CO2 também foi avaliada a -0,5°C. Doses de TDZ entre 20 e 40g ha-1 mantiveram maior firmeza da polpa e acidez titulável. Além disso, essas mesmas doses reduziram a atividade respiratória e a incidência de degenerescência da polpa, de polpa farinhenta e de podridões. A aplicação pré-colheita de TDZ, especialmente em doses entre 20 e 40g ha-1, melhora a qualidade de maçãs 'Gala' armazenadas em AC por até oito meses. Em relação às condições de AC avaliadas, o uso de 1,0kPa de O2+2,5kPa de CO2 a 0,5°C resultou em frutos mais firmes e com maior acidez titulável, além de menor incidência de degenerescência da polpa, de polpa farinhenta e de podridões.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782010000400011
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2010
    detail.hit.zdb_id: 2025834-3
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  • 10
    Online Resource
    Online Resource
    Regimes de atmosfera controlada para o armazenamento de caqui ‘Kyoto’
    FapUNIFESP (SciELO) ; 2004
    In:  Ciência Rural Vol. 34, No. 5 ( 2004-10), p. 1607-1609
    Details
    In: Ciência Rural, FapUNIFESP (SciELO), Vol. 34, No. 5 ( 2004-10), p. 1607-1609
    Abstract: This work aimed to evaluate the effect of different partial pressures of O2 and CO2, combined or not with the use of low relative humidity (RH) and the postharvest fungicide application, on the quality of ‘Kyoto’ persimmons during controlled atmosphere (CA) storage. After two months of storage at -0.5°C plus five days at 20ºC, the highest flesh firmness was obtained in fruits stored in CA conditions of 0.5kPa of O2 and 5kPa of CO2. The highest rot incidence was observed in fruits stored at 2kPa O2 + 10kPa CO2. Low RH (90%) or high CO2 levels (10 to 15kPa) led to increased skin blackening.
    Type of Medium: Online Resource
    ISSN: 0103-8478
    URL: Article
    DOI: 10.1590/S0103-84782004000500044
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
    detail.hit.zdb_id: 2025834-3
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