Biostimulant modulate the physiological and biochemical activities, improving agronomic characteristics of bell pepper plants under salt stress

被引：0

作者：

André Lucas Januário Silva ^{[1
]}

Otília Ricardo de Farias ^{[1
]}

Élida Barbosa Corrêa ^{[2
]}

Claudivan Feitosa de Lacerda ^{[3
]}

Alberto Soares de Melo ^{[2
]}

Mônica Danielly de Mello Oliveira ^{[2
]}

机构：

[1] Universidade Federal da Paraíba, Programa de Pós-Graduação em Agronomia, Areia

[2] Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Campina Grande

[3] Agricultural Engineering Department, Instituto Nacional de Ciência e Tecnologia em Agricultura Sustentável no Semiárido Tropical (INCTAgris), Universidade Federal do Ceará, Fortaleza

来源：

Scientific Reports | / 15卷 / 1期

关键词：

Capsicum annuum; Fruit quality; Osmoprotection; Productivity; Salinity;

D O I：

10.1038/s41598-025-99414-w

中图分类号：

学科分类号：

摘要：

Salinity is a significant environmental stress impacting plant growth and metabolism in irrigated areas of arid and semi-arid regions; the use of biostimulants is an effective alternative to enhance plant productivity under saline conditions. This study examined the effects of salinity stress by applying various electrical conductivities (0.5, 1.5, 2.5, 3.5, and 4.5 dS m− 1) of irrigation water combined with foliar application of the in combination with foliar application of biostimulant VIUSID Agro (0, 0.3, and 0.6 mL L− 1) on the growth, productivity, physiological, and biochemical responses of bell pepper plants in a greenhouse. Conducted in a factorial design with a completely randomized layout and five replications, and the results indicated that salinity caused a significant reduction in growth, decreased chlorophyll levels, and increased malondialdehyde levels, osmoregulators, and antioxidant enzyme activity. Plants treated with biostimulant demonstrated relatively superior growth parameters, such as plant height, dry matter, leaf area and number of leaves, as well as fruit quality, such as fruit size, firmness, ascorbic acid and soluble solids. Both doses of the biostimulant effectively mitigated the effects of salt stress by maintaining higher chlorophyll levels (15% increase), enhancing photosynthetic performance (20% increase), and improving fruit size and quality, as well as leaf water status, ultimately leading to better crop performance. The biochemical mechanisms through which these effects occur include enhanced osmoregulation and increased antioxidant activity. The foliar application of the biostimulant was an effective strategy to enhance the tolerance of bell pepper plants under salt stress conditions and can serve as a sustainable solution for agricultural production in saline irrigation water. © The Author(s) 2025.

引用

共 73 条

[1] Gowdy J., Our hunter-gatherer future: climate change, agriculture and uncivilization, Fut, 115, (2020)
[2] Sousa V.F.O., Et al., Castor bean cake increases osmoprotection and oil production in Basil (Ocimum Basilicum) under saline stress, Sci. Horticultur, 309, (2023)
[3] Ikuyinminu E., Goni O., O'Connell S., Enhancing irrigation salinity stress tolerance and increasing yield in tomato using a precision engineered protein hydrolysate and Ascophyllum nodosum-derived biostimulant, Agron, 12, (2022)
[4] Kacjan Marsic N., Et al., Ferjanˇ ciˇ C, B. Physiological and biochemical responses of ungrafted and grafted bell pepper plants (Capsicum annuum L. Var. Grossum (L.) Sendtn.) grown under moderate salt stress, Plants, 10, (2012)
[5] Etesami H., Noori F., Soil salinity as a challenge for sustainable agriculture and bacterial-mediated alleviation of salinity stress in crop plants, Saline Soil-Based Agriculture by Halotolerant Microorganisms, pp. 1-22, (2019)
[6] Fricke W., Energy costs of salinity tolerance in crop plants: nighttime transpiration and growth, New Phytol, 225, pp. 1152-1165, (2020)
[7] Pena Calzada K., Et al., Exogenous application of amino acids mitigates the deleterious effects of salt stress on soybean plants, Agron, 12
[8] Ahmad R., Et al., In Oxidative Stress and Antioxidant Defense Mechanisms in Plants under Salt Stress, pp. 191-205, (2019)
[9] Linh N.T., Cham L.T.T., Thang V.N., Effects of salinity stress on the growth, physiology, and yield of soybean (Glycine max (L.) Merrill), Vietnam J. Agric. Sci, 4, pp. 1043-1055, (2021)
[10] Ren J., Et al., Exogenous melatonin improves salt tolerance by mitigating osmotic, ion, and oxidative stresses in maize seedlings, Agron, 10, (2020)

← 1 2 3 4 5 6 7 8 →