scholarly journals Influence of Funneliformis mosseae enhanced with titanium dioxide nanoparticles (TiO2NPs) on Phaseolus vulgaris L. under salinity stress

PLoS ONE ◽  
2020 ◽  
Vol 15 (8) ◽  
pp. e0235355 ◽  
Author(s):  
Nashwa El-Gazzar ◽  
Khalid Almaary ◽  
Ahmed Ismail ◽  
Giancarlo Polizzi
2016 ◽  
Vol 6 (1) ◽  
pp. 58 ◽  
Author(s):  
Ahmad Ebrahimi ◽  
Mohammad Galavi ◽  
Mahmood Ramroudi ◽  
Payam Moaveni

Tests were done on the effects of titanium dioxide spray on Pinto bean (Phaseolus vulgaris L. c.v ‘c.o.s.16’). The study was conducted as a factorial experiment in a randomized complete block design with four replications for two years (2014 - 2015). Treatments consisted of two factors; the first factor was stage of plant growth that spraying was applied (rapid vegetative growth, flowering and pod filling); and the second factor was that of different concentrations of titanium dioxide nanoparticles (TiO<sub>2</sub>) that consisted of spray with water (control), nano titanium dioxide at concentrations of 0.01%, 0.02%, 0.03% and 0.05%. Activity of guaiacol peroxidase (GPX), activity of superoxide dismutase (SOD), activity of catalase (CAT), activity of peroxidase (POD), malonyldialdehyde (MDA) Content and 8-deoxy-2-hydroxyguanosine (8-OHDG) content were assayed. Results showed that effect of nano TiO<sub>2</sub> was significant on activity of superoxide dismutase (SOD), activity of catalase (CAT), activity of peroxidase (POD), malonyldialdehyde (MDA) Content and 8-deoxy-2-hydroxyguanosine (8-OHDG) content. Results of combined analysis of variance showed that the effect year significantly affected on SOD and 8-OH-2-DG (P ≤ 0.05). The effect of different amounts of titanium dioxide nanoparticles (TiO<sub>2</sub>) significantly affected (P ≤ 0.05) on MDA and 8-OH-2-DG. The effects of different amounts of titanium dioxide nanoparticles and year were significant on SOD, POD, MDA and the amount of 8-deoxy-2-hydroxyguanosine in P ≤ 0.05. None of the physiological traits were affected by spraying of nano titanium dioxide. The effects of TiO<sub>2</sub> nanoparticles times of spraying and year were significant on SOD, CAT and 8-deoxy-2-hydroxyguanosine (P ≤ 0.05). Interaction effects of nano TiO<sub>2</sub> concentrations × nano TiO<sub>2</sub> spraying times did not have a significant impact on SOD, CAT, POD, GPX, MDA and 8-OH-2-DG. Although, all trait were affected by interaction effects of year × nano TiO<sub>2</sub> concentrations × nano TiO<sub>2</sub> spraying times with the exception of GPX (P ≤ 0.05).


2019 ◽  
Vol 11 (32) ◽  
pp. 184-194
Author(s):  
Shokoufeh Dastneshan ◽  
Manijeh Sabokdast nodehi ◽  
◽  

Author(s):  
Pascal Tabi Tabot ◽  
Mfombep Priscilla Mebong ◽  
Achangoh Josaiah Abeche ◽  
Nchufor Christopher Kedju ◽  
Besingi Claudius Nyama

Secondary salinization of arable lands, and declining irrigation water resources are major challenges for crop production. We investigated synergistic effects of salinity and irrigation on Phaseolus vulgaris L. in a 4 × 3 factorial experiment with four salinity levels (0, 4, 8 and 12 ppt) coupled with 3 irrigation regimes that reflected a deficit, normal and excess irrigation for the region. Growth and ecophysiological variables were measured, and data submitted to Analyses of variance, Correlation and Factor analyses in the Minitab Version 17 software. Salinity stress decreased height (35.05 to 31.97 cm) as salinity increased from 0 to 8 ppt. Number of leaves, number of branches, number of flowers and fruits as well as fruit mass and harvest index all decreased as salinity stress increased. Plants in the deficit irrigation regime had higher water use efficiency (1.27g/l) and transpiration use efficiency (29.51 g/l) compared to those under higher irrigation regimes. Salinity and water stress effects on yield and plant water relations would significantly impede production of this crop, with significant yield losses of over 400% in higher salinities. Therefore measures to alleviate soil salinity are necessary for enhanced P. vulgaris production in such saline contaminated areas.


2020 ◽  
Vol 38 (3) ◽  
pp. 667-678
Author(s):  
Yonger Tamayo-Aguilar ◽  
Porfirio Juarez-Lopez ◽  
Wendy Capdevila-Bueno ◽  
José Lescaille-Acosta ◽  
Elein Terry-Alfonso

Los actuales sistemas de producción de alimentos requieren el empleo de alternativas con enfoques ecológicos y asequibles, entre los que se destaca el uso de los bioproductos generados por la acción de microorganismos que actúan en la nutrición, crecimiento y desarrollo de las plantas. El objetivo de este trabajo fue evaluar la respuesta de Phaseolus vulgaris L. var. Delicia 364 a la aplicación de bioproductos (hongos micorrícicos arbusculares y Spiruvinas) en macetas de plástico con volumen de 44 L de capacidad. En el presente experimento se utilizó el bioproducto Azofert. El experimento se realizó en el municipio El Salvador, provincia Guantánamo, Cuba. Los tratamientos se distribuyeron en un diseño completamente al azar: (T1) Azofert sin HMA (testigo); (T2) Azofert sin HMA + 2 L ha-1 de Spiruvinas; (T3) Azofert + Rhizophagus irregularis; (T4) Azofert + Glomus cubense; (T5) Azofert + Funneliformis mosseae; (T6) Azofert + Rhizophagus irregularis + 2 L ha-1 de Spiruvinas; (T7) Azofert + Glomus cubense + 2 L ha-1 de Spiruvinas; (T8) Azofert + Funneliformis mosseae + 2 L ha-1 de Spiruvinas. Se evaluó: altura de las plantas, diámetro del tallo, número de vainas, número de granos por vainas, peso de 100 granos y rendimiento. Además, se evaluó el funcionamiento micorrícico mediante la colonización micorrícica y la densidad visual. Los resultados mostraron que la aplicación de bioproductos (hongos micorrícicos arbusculares y Spiruvinas) incrementaron el crecimiento y el rendimiento del cultivo de frijol var. Delicia 364; asimismo, con la combinación Azofert + Rhizophagus irregularis + Spiruvinas se obtuvo el mayor rendimiento con 2.11 Mg ha-1, lo que representa 37.9% más que el promedio nacional.


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