Ion accumulation in young plants of the ‘green dwarf’ coconut under water and salt stress

Silva, Alexandre Reuber Almeida da; Bezerra, Francisco Marcus Lima; Lacerda, Claudivan Feitosa de; Miranda, Rafael de Souza; Marques, Elton Camelo

doi:10.5935/1806-6690.20180028

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…The increase in the leaf K concentrations is an important mechanism of plants under salt stress since this macronutrient plays a relevant role in stomatal regulation, especially under restricted conditions of water, and ensures the turgidity of guard cells through a reduction in the osmotic potential [ 34 ].…”

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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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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“…Seeds were obtained from Banco Ativo de Germoplasma (BAG) at Federal University of Ceará (UFC, Fortaleza, Ceará, Brazil), sterilized with 2% sodium hypochlorite, and subsequently sown in soils previously irrigated to field capacity. Twelve days after sowing, salt stress was started by irrigation with saline water prepared by dissolving NaCl, CaCl 2 •2H 2 O, and MgCl 2 (7:2:1 w/w) in tap water (Rhoades et al 2000), adjusting the values of EC to 0.8, 4.0, and 8.0 dS m −1 (Silva et al 2018). The plants were regularly watered to field capacity using the principle of lysimeter drainage (Bernardo et al 2008) and adding a leaching fraction of 15% to prevent excessive salt accumulation.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Salt-Acclimation Physiological Mechanisms at the Vegetative Stage of Cowpea Genotypes in Soils from a Semiarid Region

Miranda

Souza

Alves

et al. 2021

J Soil Sci Plant Nutr

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Developing salt-tolerant plants has emerged as a highly efficient approach to cope with salinity damage on crop growth and productivity. This study aimed to elucidate the mechanisms of salt acclimation in cowpea plants [Vigna unguiculata (L.) Walp] and screen salt-tolerant potential genotypes during the early vegetative stage. Seven cowpea genotypes (Epace, Juruá, Maratauã, Milagroso, Pitiúba, Sempre verde, and TVU) were irrigated for 24 days with saline solutions of electrical conductivity 0.8 (control), 4.0 (moderate stress), and 8.0 dS m −1 (severe stress). Growth, water status, membrane damage, and variables related to photosynthetic machinery efficiency were evaluated. Biomass accumulation dramatically decreased with salinity, and the reductions were intensified by increasing the salt level. Nevertheless, under moderate salinity, Pitiúba plants showed less reductions in growth than other genotypes. Under moderate stress, Pitiúba plants exhibited maintenance of osmotic potential and photosynthetic pigments, which was consistent with unaltered membrane and elevated leaf succulence, resulting in improved photochemical performance. Conversely, although TVU, Juruá, and Milagroso plants had activated responses against moderate salinity, including reduced leaf osmotic potential and improved stomatal conductance, these responses were not sufficient to mitigate salt injury. The findings clearly show that the Pitiúba genotype activates coordinated responses to mitigate moderate salt damage, constituting an alternative for cultivating cowpea plants in saline environments.

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Microbial Valorization of Coir Pith for Development of Compost and Bioethanol Production

Malik

Rawat

2021

Bio-Valorization of Waste

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Ion accumulation in young plants of the ‘green dwarf’ coconut under water and salt stress

Cited by 6 publications

References 2 publications

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

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

Salt-Acclimation Physiological Mechanisms at the Vegetative Stage of Cowpea Genotypes in Soils from a Semiarid Region

Microbial Valorization of Coir Pith for Development of Compost and Bioethanol Production

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