Effect of combined potassium-phosphorus fertilization on gas exchange, antioxidant activity and fruit production of West Indian cherry under salt stress

Dias, Adaan Sudário; Lima, Geovani Soares de; Gheyi, Hans Raj; Melo, Alberto Soares de; Silva, Petterson Costa Conceição; Soares, Lauriane Almeida dos Anjos; Paiva, Francisco Jean da Silva; Silva, Saulo Soares da

doi:10.1080/15324982.2021.1959464

Cited by 12 publications

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“…Potassium's roles in plants include enzyme activation, stomatal control, cellular turgor maintenance, and phloem transport of photoassimilates 88 . Furthermore, it has been shown that most crops use P and K to reduce the negative effects of salt stress 5 , 29 , 31 – 33 , 39 , 48 , 68 , 88 , 89 . In the present study, the concentration of potassium (K) in shoots was similar for all salt-stressed and fertilized plants (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…This often causes soil salinity and results in low fertility of salt-affected soil 4 . Soil salinity is the accumulation of soluble salts on the soil surface or in subsurface layers 5 . Consequently, the increased levels of toxic ions such as sodium and chlorine (Na + and Cl − ) negatively impact plant growth and yield by limiting water uptake and causing ion toxicity, which can lead to nutrient imbalances 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Although salinity tolerance mechanisms vary remarkably among plant species and even within different accessions of the same species 11 , salt-stressed plants adopted multiple physiological and metabolic strategies to minimise the damage caused by oxidative stress: Ion transport and absorption, ion compartmentalization, hormonal modulation, osmoprotectants and solutes biosynthesis, the synthesis of antioxidant compounds and the activation of antioxidant enzymes 5 , 19 . Furthermore, it is important to note that ROS are not known only as toxic metabolic products causing damage to cellular components, but also play a role in signal transduction to support the cell defence against the oxidative stress damage in cell compartments of stressed plants 20 where the fast increase in their concentration is known as “oxidative burst” 18 .…”

Section: Introductionmentioning

confidence: 99%

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Polyphosphate fertilizer impacts the enzymatic and non-enzymatic antioxidant capacity of wheat plants grown under salinity

Loudari

Latique

Mayane

et al. 2023

Sci Rep

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By 2050, the predicted global population is set to reach 9.6 billion highlighting the urgent need to increase crop productivity to meet the growing demand for food. This is becoming increasingly challenging when soils are saline and/or deficient in phosphorus (P). The synergic effect of P deficiency and salinity causes a series of secondary stresses including oxidative stress. Reactive Oxygen Species (ROS) production and oxidative damage in plants caused either by P limitation or by salt stress may restrict the overall plant performances leading to a decline in crop yield. However, the P application in adequate forms and doses could positively impact the growth of plants and enhances their tolerance to salinity. In our investigation, we evaluated the effect of different P fertilizers forms (Ortho-A, Ortho-B and Poly-B) and increasing P rates (0, 30 and 45 ppm) on the plant's antioxidant system and P uptake of durum wheat (Karim cultivar) grown under salinity (EC = 3.003 dS/m). Our results demonstrated that salinity caused a series of variations in the antioxidant capacity of wheat plants, at both, enzymatic and non-enzymatic levels. Remarkably, a strong correlation was observed between P uptake, biomass, various antioxidant system parameters and P rates and sources. Soluble P fertilizers considerably enhanced the total plant performances under salt stress compared with control plants grown under salinity and P deficiency (C+). Indeed, salt-stressed and fertilized plants exhibited a robust antioxidant system revealed by the increase in enzymatic activities of Catalase (CAT) and Ascorbate peroxidase (APX) and a significant accumulation of Proline, total polyphenols content (TPC) and soluble sugars (SS) as well as increased biomass, Chlorophyll content (CCI), leaf protein content and P uptake compared to unfertilized plants. Compared to OrthoP fertilizers at 45 ppm P, Poly-B fertilizer showed significant positive responses at 30 ppm P where the increase reached + 18.2% in protein content, + 156.8% in shoot biomass, + 93% in CCI, + 84% in shoot P content, + 51% in CAT activity, + 79% in APX activity, + 93% in TPC and + 40% in SS compared to C+. This implies that PolyP fertilizers might be an alternative for the suitable management of phosphorus fertilization under salinity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polyphosphate fertilizer impacts the enzymatic and non-enzymatic antioxidant capacity of wheat plants grown under salinity

Loudari

Latique

Mayane

et al. 2023

Sci Rep

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“…The increase in the Ci of plants grown under salt stress indicates damage to the photosynthetic apparatus, e.g., decrease in the carboxylation efficiency of RuBisCO, caused mainly by salt accumulation in the leaf tissues [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

NPK Accumulation, Physiology, and Production of Sour Passion Fruit under Salt Stress Irrigated with Brackish Water in the Phenological Stages and K Fertilization

Lima

Silva

Torres

et al. 2023

Plants

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This research aimed to evaluate the effects of salt stress, varying the phenological stages, and K fertilization on NPK concentrations, physiology, and production of Passiflora edulis Sims. The research was carried out at the University Farm of São Domingos, Paraíba, Brazil, using a randomized block design with a 6 × 2 factorial arrangement. Six irrigation strategies were evaluated (use of low electrical conductivity water (0.3 dS m−1) during all stages of development and application of high-salinity water (4.0 dS m−1) in the following stages: vegetative, flowering, fruiting, successively in the vegetative/flowering, and vegetative/fruiting stages) and two potassium levels (207 and 345 g K2O per plant), with four replications and three plants per plot. The leaf concentrations of N, P, and K in the sour passion fruit plants found in the present study were below the optimal levels reported in the literature, regardless of the development stage and the cultivation cycle. The relative water content, stomatal conductance, and photosynthesis were reduced by salt stress in the first cycle. However, in the second cycle, irrigation with 4.0 dS m−1 in the vegetative/flowering stages increased the CO2 assimilation rate. Passion fruit is sensitive to salt stress in the vegetative/flowering stages of the first cycle. In the second cycle, salt stress in the fruiting stage resulted in higher production per plant.

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“…Isso pode estar relacionado à ação das poliaminas na diferenciação de gemas (Chen et al, 2019) (Shu et al, 2013). A espermina diminuiu a gs de plantas de T. majus sob estresse salino severo como forma de aumentar a tolerância ao déficit hídrico causado pelo aumento da salinidade para minimizar a perda de água para o ambiente (Dias et al, 2021). Esse fechamento estomático está relacionado a uma série de mecanismos de sinalização osmótica, que resultam no efluxo de íons das células-guarda, reduzindo seu turgor e volume, o que é sinalizado pelo aumento do teor de ácido abscísico (ABA) nas raízes devido à diminuição do potencial hídrico do solo causado pelo aumento da salinidade (Hsu et al, 2021).…”

Section: Discussionunclassified

Espermina como atenuante dos danos causados pelos estresses salino e hídrico em capuchinha (Tropaeolum majus L.)

Silva¹

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Os estresses abióticos são uma das principais causas da baixa produtividade dos cultivos devido aos distúrbios que causam às plantas. A aplicação de poliaminas é uma alternativa para amenizar os efeitos deletérios dos estresses abióticos sobre as plantas. Flores, folhas, frutos e botões de capuchinha (Tropaeolum majus) são utilizados para fins ornamentais, medicinais e alimentícios. No entanto, o estresse salino e o deficit hídrico limitam o desenvolvimento e a produtividade desta planta devido a distúrbios bioquímicos, fisiológicos e anatômicos. A aplicação de espermina pode ser uma alternative para diminuir os danos causados por estes estresses nessa planta. Com isso, objetivou-se nesta tese avaliar o efeito da aplicação de espermina como atenuante dos efeitos danosos do estresse salino e déficit hídrico no crescimento, trocas gasosas e metabolismo de capuchinha. Um experimento no delineamento inteiramente casualizado, em esquema fatorial 3x2, com 0 (sem estresse), 40 (estresse salino moderado) e 80 mM NaCl (estresse salino severo) e 0 e 1 mM de espermina com cinco repetições foi usado para o experimento com estresse salino. Um experimento distribuído em delineamento inteiramente casualizado, em esquema fatorial 3x2, com 30 (déficit hídrico severo), 50 (deficit hídrico moderado) e 80% da capacidade de retenção de vaso (sem estresse) e 0 e 1 mM de espermina com cinco repetições foi usado para o experimento com déficit hídrico. A aplicação de espermina diminuiu os efeitos nocivos do estresse salino e déficit hídrico no crescimento e nas trocas gasosas e aumentou o número de flores de capuchinha. Além disso, aumentou o teor relativo de água e atividade enzimática e diminuiu a peroxidação lipídica. A aplicação de espermina diminuiu a produção de etileno em flores de capuchinha. A aplicação de espermina aumenta a tolerância ao estresse salino e déficit hídrico em capuchinha, aumentando o crescimento, trocas gasosas, teor relativo de água, enzimas do sistema antioxidante, diminuindo a peroxidação lipídica. A aplicação de espermina (1 mM) pode ser usada para mitigar os efeitos danosos do estresse salino e déficit hídrico em capuchinha. Palavras-chave: Estresses abióticos. Crescimento. Fotossíntese. Sistema antioxidante. Etileno.

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Effect of combined potassium-phosphorus fertilization on gas exchange, antioxidant activity and fruit production of West Indian cherry under salt stress

Cited by 12 publications

References 54 publications

Polyphosphate fertilizer impacts the enzymatic and non-enzymatic antioxidant capacity of wheat plants grown under salinity

Polyphosphate fertilizer impacts the enzymatic and non-enzymatic antioxidant capacity of wheat plants grown under salinity

NPK Accumulation, Physiology, and Production of Sour Passion Fruit under Salt Stress Irrigated with Brackish Water in the Phenological Stages and K Fertilization

Espermina como atenuante dos danos causados pelos estresses salino e hídrico em capuchinha (Tropaeolum majus L.)

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