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1.
Plant Mol Biol ; 82(1-2): 39-50, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23456248

RESUMEN

Rice is cultivated in water-logged paddy lands. Thus, rice root hairs on the epidermal layers are exposed to a different redox status of nitrogen species, organic acids, and metal ions than root hairs growing in drained soil. To identify genes that play an important role in root hair growth, a forward genetics approach was used to screen for short-root-hair mutants. A short-root-hair mutant was identified and isolated by using map-based cloning and sequencing. The mutation arose from a single amino acid substitution of OsSNDP1 (Oryza sativa Sec14-nodulin domain protein), which shows high sequence homology with Arabidopsis COW1/AtSFH1 and encodes a phosphatidylinositol transfer protein (PITP). By performing complementation assays with Atsfh1 mutants, we demonstrated that OsSNDP1 is involved in growth of root hairs. Cryo-scanning electron microscopy was utilized to further characterize the effect of the Ossndp1 mutation on root hair morphology. Aberrant morphogenesis was detected in root hair elongation and maturation zones. Many root hairs were branched and showed irregular shapes due to bulged nodes. Many epidermal cells also produced dome-shaped root hairs, which indicated that root hair elongation ceased at an early stage. These studies showed that PITP-mediated phospholipid signaling and metabolism is critical for root hair elongation in rice.


Asunto(s)
Proteínas de la Membrana/química , Oryza/crecimiento & desarrollo , Oryza/metabolismo , Proteínas de Plantas/química , Proteínas de Plantas/metabolismo , Raíces de Plantas/crecimiento & desarrollo , Secuencia de Aminoácidos , Arabidopsis/genética , Secuencia de Bases , Distribución de Chi-Cuadrado , Segregación Cromosómica , Clonación Molecular , Perfilación de la Expresión Génica , Regulación de la Expresión Génica de las Plantas , Prueba de Complementación Genética , Datos de Secuencia Molecular , Mutación/genética , Oryza/genética , Oryza/ultraestructura , Fenotipo , Proteínas de Plantas/genética , Raíces de Plantas/anatomía & histología , Raíces de Plantas/citología , Raíces de Plantas/ultraestructura , Brotes de la Planta/anatomía & histología , Brotes de la Planta/metabolismo , Plantas Modificadas Genéticamente , Estructura Terciaria de Proteína , ARN Mensajero/genética , ARN Mensajero/metabolismo , Alineación de Secuencia
2.
Planta ; 237(5): 1227-39, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23334469

RESUMEN

The outgrowth of root hairs from the epidermal cell layer is regulated by a strict genetic regulatory system and external growth conditions. Rice plants cultivated in water-logged paddy land are exposed to a soil ecology that differs from the environment surrounding upland plants, such as Arabidopsis and maize. To identify genes that play important roles in root-hair growth, a forward genetics approach was used to screen for short-root-hair mutants. A short-root-hair mutant was identified, and the gene was isolated using map-based cloning and sequencing. The mutant harbored a point mutation at a splicing acceptor site, which led to truncation of OsFH1 (rice formin homology 1). Subsequent analysis of two additional T-DNA mutants verified that OsFH1 is important for root-hair elongation. Further studies revealed that the action of OsFH1 on root-hair growth is dependent on growth conditions. The mutant Osfh1 exhibited root-hair defects when roots were grown submerged in solution, and mutant roots produced normal root hairs in the air. However, root-hair phenotypes of mutants were not influenced by the external supply of hormones or carbohydrates, a deficiency of nutrients, such as Fe or P i , or aeration. This study shows that OsFH1 plays a significant role in root-hair elongation in a growth condition-dependent manner.


Asunto(s)
Oryza/crecimiento & desarrollo , Oryza/metabolismo , Proteínas de Plantas/metabolismo , Raíces de Plantas/crecimiento & desarrollo , Raíces de Plantas/metabolismo , Regulación de la Expresión Génica de las Plantas/genética , Regulación de la Expresión Génica de las Plantas/fisiología , Oryza/genética , Proteínas de Plantas/genética , Raíces de Plantas/genética
3.
Comput Intell Neurosci ; 2021: 9918175, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34539773

RESUMEN

In real life, people's life gradually tends to be simple, so the convenience of online shopping makes more and more research begin to explore the convenience optimization of shopping, in which the fitting system is the research product. However, due to the immaturity of the virtual fitting system, there are a lot of problems, such as the expression of clothing color is not clear or deviation. In view of this, this paper proposes a 3D clothing color display model based on deep learning to support human modeling-driven. Firstly, the macro-micro adversarial network (MMAN) based on deep learning is used to analyze the original image, and then, the results are preprocessed. Finally, the 3D model with the original image color is constructed by using UV mapping. The experimental results show that the accuracy of the MMAN algorithm reaches 0.972, the established three-dimensional model is emotional enough, the expression of the clothing color is clear, and the difference between the color difference and the original image is within 0.01, and the subjective evaluation of volunteers is more than 90 points. The above results show that it is effective to use deep learning to build a 3D model with the original picture clothing color, which has great guiding significance for the research of character model modeling and simulation.


Asunto(s)
Aprendizaje Profundo , Algoritmos , Vestuario , Cuerpo Humano , Humanos , Interfaz Usuario-Computador
4.
Mol Med Rep ; 15(6): 3739-3746, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28393192

RESUMEN

The aim of the present study was to investigate whether cyclosporine A (CSA) improved cardiac dysfunction at an early stage of sepsis. Male Wistar rats were randomly divided into the following three groups: the sham­operated control group, the cecal ligation puncture (CLP) procedure­induced sepsis group and the CSA intervention group. Cecal ligation was performed to generate a sepsis model. At different time points (2, 6, 12, 24 and 72 h) following sepsis induction, blood pressure, cardiac function, and non­esterified free fatty acid (NEFA) levels in the plasma and myocardia were measured, and the expression levels of components associated with the AMP­activated protein kinase (AMPK)­acetyl CoA carboxylase (ACC)­carnitine palmitoyl transferase 1 (CPT1) signaling pathway were compared among the three groups. Sepsis induced a decrease in blood pressure and cardiac function at 24 h following sepsis induction in the CLP group, and CSA treatment ameliorated these pathophysiological alterations. In addition, rats in the CLP group exhibited significant increases in calcineurin activity and NEFA accumulation in the heart when compared with those in the sham group. These effects were attenuated by CSA treatment. Mechanistically, the activity of the AMPK­ACC­CPT1 pathway was enhanced by CSA treatment. The present study revealed that CSA treatment increases cardiac function at an early stage of sepsis in rats. This treatment partially suppresses calcineurin activity while activating the AMPK­TCC­CPT1 pathway.


Asunto(s)
Inhibidores de la Calcineurina/farmacología , Ciclosporina/farmacología , Cardiopatías/etiología , Cardiopatías/fisiopatología , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Sepsis/complicaciones , Acetil-CoA Carboxilasa/metabolismo , Animales , Biomarcadores , Presión Sanguínea/efectos de los fármacos , Carnitina O-Palmitoiltransferasa/metabolismo , Modelos Animales de Enfermedad , Cardiopatías/tratamiento farmacológico , Pruebas de Función Cardíaca , Masculino , Miocardio/metabolismo , Miocardio/patología , Ratas , Disfunción Ventricular/tratamiento farmacológico
5.
Ying Yong Sheng Tai Xue Bao ; 26(10): 3111-8, 2015 Oct.
Artículo en Zh | MEDLINE | ID: mdl-26995920

RESUMEN

In order to improve root parameterization in land surface model, the sub-model for root in CERES-Maize was coupled in the SSiB2 after calibrating of maize parameters in SSiB2. The effects of two improved root parameterization schemes on simulated results of land surface flux were analyzed. Results indicated that simulation accuracy of land surface flux was enhanced when the root module provided root depth only with the SSiB2 model (scheme I). Correlation coefficients between observed and simulated values of latent flux and sensible flux increased during the whole growing season, and RMSE of linear fitting decreased. Simulation accuracy of CO2 flux was also enhanced from 121 days after sowing to mature period. On the other hand, simulation accuracy of the flux was enhanced when the root module provided root depth and root length density simultaneously for the SSiB2 model (scheme II). Compared with the scheme I, the scheme II was more comprehensive, while its simulation accuracy of land surface flux decreased. The improved root parameterization in the SSiB2 model was better than the original one, which made simulated accuracy of land-atmospheric flux improved. The scheme II overestimated root relative growth in the surface layer soil, so its simulated accuracy was lower than that of the scheme I.


Asunto(s)
Modelos Teóricos , Raíces de Plantas/crecimiento & desarrollo , Zea mays/crecimiento & desarrollo , Estaciones del Año , Suelo
6.
Cell Biochem Biophys ; 69(1): 55-9, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24114373

RESUMEN

This study was conducted to investigate the possible correlation of chronic renal dysfunction and albuminuria with the severity of coronary artery lesions in patients with coronary artery disease (CAD). Two-hundred and ninety-nine patients who had undergone coronary angiography for suspected CAD were stratified into three groups according to the glomerular filtration rate (GFR): group I included 144 patients with normal renal function GFR >90 ml/(min × 1.73 m(2)), group II included 97 patients with mild renal impairment GFR 60-89 ml/(min × 1.73 m(2)), and group III included 58 patients with moderate renal impairment GFR <60 ml/(min × 1.73 m(2)). Patients were then stratified into two groups according to the albuminuria level (0; minimal, 1+, 2+, 3+): the albuminuria negative group (negative = 0) included 171 patients and the albuminuria positive group (positive = minimal, 1+, 2+, 3+) included 128 patients. Clinical features and coronary lesion characteristics were compared among these groups. Patients with more severe renal dysfunction and positive albuminuria had a higher incidence of CAD (66.7 vs. 70.1 vs. 72.4%, p = 0.025 and 64.2 vs. 75.0%, p = 0.032), more multi-vessel disease (31.2 vs. 41.2 vs. 53.4 %, p = 0.004 and 33.3 vs. 46.1%, p = 0.015), more left anterior descending branch lesions (50.7 vs. 56.7 vs. 60.3%, p = 0.012 and 49.1 vs. 61.7 %, p = 0.009), and a higher Gensini score (42.3 ± 14.7 vs. 46.1 ± 19.9 vs. 52.8 ± 21.2, p = 0.026 and 44.0 ± 16.0 vs. 50.5 ± 20.2, p = 0.017). In conclusion, chronic renal dysfunction and albuminuria may be important factors determining the occurrence and the severity of CAD. Albuminuria was an especially significant indicator at the early stage of renal dysfunction.


Asunto(s)
Albuminuria/fisiopatología , Enfermedad de la Arteria Coronaria/fisiopatología , Vasos Coronarios/fisiopatología , Riñón/fisiopatología , Insuficiencia Renal/fisiopatología , Anciano , Anciano de 80 o más Años , Albuminuria/complicaciones , Albuminuria/diagnóstico por imagen , Albuminuria/patología , Angiografía Coronaria , Enfermedad de la Arteria Coronaria/complicaciones , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Enfermedad de la Arteria Coronaria/patología , Vasos Coronarios/diagnóstico por imagen , Vasos Coronarios/patología , Femenino , Tasa de Filtración Glomerular , Humanos , Riñón/patología , Masculino , Persona de Mediana Edad , Insuficiencia Renal/complicaciones , Insuficiencia Renal/diagnóstico por imagen , Insuficiencia Renal/patología , Índice de Severidad de la Enfermedad
7.
Plant Signal Behav ; 8(8)2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23733059

RESUMEN

By using a forward genetic approach, a formin homology 1 gene (OsFH1) was identified as a critical regulator of rice root hair development. The phenotypic effect of OsFH1 on root hair development was verified by using three independent mutants, one point mutation and two T-DNA insertions. The study showed that OsFH1 is required for the elongation of root-hairs. However, Osfh1 exhibited growth defect of root hairs only when roots were grown submerged in solution. To understand how OsFH1 impinges on plant responses to root submergence, the growth responses of Osfh1 root hairs to anoxia, carbohydrate supplementation and exogenous hormones (auxin and ethylene) and nutrients (Fe and Pi) were examined. However, none of these treatments rescued the growth defects of Osfhl1 root hairs. This study demonstrates that OsFH1 could be involved in preventing submergence-induced inhibition of root hair growth.


Asunto(s)
Oryza/crecimiento & desarrollo , Oryza/metabolismo , Proteínas de Plantas/metabolismo , Raíces de Plantas/crecimiento & desarrollo , Raíces de Plantas/metabolismo , Agua/metabolismo , Mutación/genética , Oryza/citología , Fenotipo , Raíces de Plantas/citología
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