Salinity decreases transpiration of sorghum plants

Guimarães, M. J. M.; Simões, Welson Lima; Barros, Juliane Rafaele Alves; Willadino, Lília

doi:10.1017/exp.2020.22

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…Sorghum (Sorghum bicolor (L.) Moench) is a tolerant/resistant crop to several abiotic constraints (Gois et al, 2019;Safdar et al, 2019;Shankar & Evelin, 2019;Castro & Santos, 2020). Its agricultural exploitation in semiarid regions is subject to several adverse environmental factors, potentially capable of causing negative effects on growth, development, production, and quality Simões et al, 2019;Guimarães et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Management for grain sorghum cultivation under saline water irrigation

Guimarães

Simões

Salviano

et al. 2022

Rev. bras. eng. agríc. ambient.

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In order to obtain an efficient cultivation of grain sorghum in production systems that use saline water, an adequate management becomes necessary for maximizing its production. The present study aimed to evaluate the effect of the application of leaching fractions in the saline water irrigation management on the production of sorghum varieties and on the distribution of water and salts in the soil profile, under semiarid conditions. The study was carried out in the municipality of Petrolina, semiarid region of Brazil. The experimental design was randomized blocks, with four replicates, in split-split plots; four leaching fractions (LF): 0, 5, 10, and 15% with saline water from artesian well in the plots, three varieties of grain sorghum: 1011-IPA, 2502-IPA and Ponta Negra in the subplots, and two crop cycles (1st and 2nd cut) in the sub-subplots. The evaluated variables were distribution of water and salts in the soil profile, biometric variables, fresh biomass, dry biomass, and grain yield. Application of leaching fractions of up 15% in saline water irrigation promotes better distribution of salts in the soil profile, with increments of up to 60% in the grain yield of the sorghum varieties evaluated. The production of the varieties 1011-IPA and Ponta Negra is a feasible alternative in systems irrigated with saline water with average electrical conductivity of 4.19 dS m-1, in Ultisol, under semiarid conditions.

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Section: Introductionmentioning

confidence: 99%

Management for grain sorghum cultivation under saline water irrigation

Guimarães

Simões

Salviano

et al. 2022

Rev. bras. eng. agríc. ambient.

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“…As observed in the current study, decreased stomatal and chlorophyll concentrations may lead to lower radiation usage efficiency and carbohydrate synthesis, resulting in lower plant growth and biomass in salt‐stressed plants. Guimarães et al ( 2020 ) reported that the transpiration of salt‐sensitive sorghum plants decreased by up to 70% under salt stress compared with that in control plants. Ibrahim et al ( 2020 ) found that the stomatal conductance of sorghum decreases considerably with increasing soil salinity.…”

Section: Discussionmentioning

confidence: 99%

Effects of melatonin, proline, and salicylic acid on seedling growth, photosynthetic activity, and leaf nutrients of sorghum under salt stress

Kiremit,

Öztürk,

Arslan

et al. 2024

Plant Direct

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Soil salinization poses a significant challenge to the sustainability and productivity of agriculture worldwide. This issue continues to hinder plant growth, requiring innovative solutions to alleviate salt stress. Moreover, climate change accelerates soil salinization, which may soon spread to previously unaffected agricultural areas. Therefore, the present study evaluated the potential role of different seed priming agents (hydro (H), salicylic acid (SA), proline (P), and melatonin (MEL)) on seedlings and leaf macro and micronutrients of sorghum grown under four (.27, 2.5, 5.0, and 8.0 dS m−1) soil salinity conditions. Soil salinity drastically reduced all the growth parameters of sorghum seedlings, primarily the reduction in growth traits, which was remarkable after 2.5 dS m−1 soil salinity. In addition, plant height, shoot fresh weight, and stomata were reduced by 40.8%, 74.6%, and 36.5%, respectively, at 8.0 dS m−1 compared to .27 dS m−1. SA‐ and MEL‐primed seeds mitigated the harmful effects of soil salinity by reducing Na+ accumulation in the leaves and increasing the K+/Na+ and Ca2+/Na+ ratios and photosynthetic activity under salt stress. However, the Zn2+, Mn2+, and Cu2+ contents of sorghum leaves increased with increasing soil salinity, and these nutrients also improved with seed priming by SA, MEL, and P. Considering all nutrients, MEL‐primed sorghum seeds had better macro‐ and micro‐nutrient uptake capacities than the H, SA, and P treatments under high soil salinity conditions. Finally, the present study showed that MEL‐induced improvement in salt tolerance in sorghum seedlings was related to enhanced nutritional status, photosynthetic activity, and biomass production in salinized areas.

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“…Las plantas son un sistema dinámico y flexible capaz de adaptarse a cualquier cambio en su entorno (Arsova et al, 2019). El estrés por salinidad induce cambios morfológicos, fisiológicos y bioquímicos en las plantas, y puede provocar estrés iónico, estrés osmótico y estrés oxidativo, en las plantas (Machado-Guimarães et al, 2020). A su vez, el estres iónico es causado por la acumulación de iones de sal en las células de la planta por lo que se genera una deficiencia de nutrientes (Hernández, 2019;Wani et al, 2020).…”

Section: Discussionunclassified

“…La salinidad induce un amplio espectro de alteraciones fisiológicas (conductancia estomatica, tasa de transpiración y fotosíntesis), biometrícas (altura, área foliar, producción de biomasa) y bioquímicas (enzimas antioxidantes), y puede provocar estrés iónico, estrés osmótico y estrés oxidativo en las plantas (Machado-Guimarães et al, 2020). El estres iónico es causado por una mayor acumulación de iones de sal en las células de la planta a niveles tóxicos, y el estrés osmótico es causado por una disminución en el potencial osmótico del agua, además el estres ionico provoca una deficiencia de nutrientes, perturba el equilibrio de las especies reactivas de oxígeno (ROS) en las células de las plantas, lo que causa directamente el estrés oxidativo (Hernández, 2019;Wani et al, 2020).…”

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El Tratamiento de Semillas con Nanomateriales de Carbono Impacta en el Crecimiento y Absorción de Nutrientes en Tomate Bajo Estrés Salino

López-Vargas

Pérez-Álvarez

Cadenas‐Pliego

et al. 2021

rbio

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La salinidad es un estrés abiótico y restringe dramáticamente la producción mundial de cultivos. Los nanomateriales se usan actualmente para disminuir los efectos negativos de diversos tipos de estrés sobre los parámetros morfológicos, fisiológicos y bioquímicos de las plantas. En el presente estudio, se evaluaron los efectos de del tratamiento de semillas de tomate con nanotubos de carbono (CNT) y grafeno (GP) (50, 250 y 500 mg L-1) y dos controles (sin sonicar y sonicado) en el crecimiento, desarrollo y la absorción mineral en plantas de tomate sin estrés salino (Sin NaCl) y con estrés salino (50 mM NaCl). La aplicación de GP y CNT en plantas sin estrés salino no afecto la mayoría de los parámetros morfológico, como el peso promedio de frutos y el rendimiento. Las biomasas frescas y secas tanto de raíz como de parte aérea fueron modificadas por los CNMs. Por otro lado, la altura de las plantas bajo salinidad aumento significativamente con el tratamiento de GP y CNT en la dosis mas baja (50 mg L-1). Mientras que el DT disminuyo notablemente. El número de frutos con pudrición apical y el % de daño fueron similares a los controles. Además, el tratamiento con GP y CNT modificó la concentración de macro y micro nutrientes en as hojas y frutos de las plantas de tomate. La aplicación de GP y CNT a las semillas en sus diferentes presenta efectos positivos y bajo condiciones de estrés salino pueden inducir respuestas benéficas para la plantas.

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Salinity decreases transpiration of sorghum plants

Cited by 5 publications

References 8 publications

Management for grain sorghum cultivation under saline water irrigation

Management for grain sorghum cultivation under saline water irrigation

Effects of melatonin, proline, and salicylic acid on seedling growth, photosynthetic activity, and leaf nutrients of sorghum under salt stress

El Tratamiento de Semillas con Nanomateriales de Carbono Impacta en el Crecimiento y Absorción de Nutrientes en Tomate Bajo Estrés Salino

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