Potential of Ca-Complexed in Amino Acid in Attenuating Salt Stress in Sour Passion Fruit Seedlings

• Published in: Plants (Basel) Vol. 13; no. 20; p. 2912
• Main Authors: Souto, Antônio Gustavo de Luna, Pessoa, Angela Maria Dos Santos, Sá, Sarah Alencar de, Sousa, Nayana Rodrigues de, Barros, Emerson Serafim, Morais, Francimar Maik da Silva, Ferreira, Fagner Nogueira, Silva, Wedson Aleff Oliveira da, Batista, Rafael Oliveira, Silva, Daniel Valadão, Marcelino, Rita Magally Oliveira da Silva, Gheyi, Hans Raj, Lima, Geovani Soares de, Pessoa, Rosa Maria Dos Santos, Rêgo, Mailson Monteiro do
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.10.2024; MDPI
• Subjects: Abiotic stress; Agriculture; Amino acid sequence; Amino acids; Aquatic resources; Brazil; Carboxylation; Cell membranes; chelated calcium; Chlorophyll; Cultivars; Efficiency; Electric properties; Electrical conductivity; Electrical resistivity; Electrolyte leakage; Fruits; Gas exchange; Irrigation; Leakage; Moisture content; Organic acids; Passiflora edulis Sims; Passion fruit; Photosynthesis; Physiological aspects; Physiological effects; Physiology; Plant growth; Saline water; Salinity; Salinity effects; Salinity tolerance; Salt; Salts; Seedlings; sustainability; Water content; Water salinity; Water stress; Water use; Brazil; water salinity; chelated calcium; gas exchange; Passiflora edulis Sims; sustainability
• ISSN: 2223-7747; 2223-7747
• DOI: 10.3390/plants13202912

Salt stress results in physiological changes that inhibit plant growth and development. Ca-complex sources are used as a potential salt stress attenuator. This study was carried out with the aim of verifying the effects of Ca-complex sources in reducing the effects of saline water stress on the physiological aspects of sour passion fruit seedlings. The experiment was carried out in a randomized block design with a 2 × 2 × 3 factorial scheme, consisting of two cultivars of sour passion fruit (BRS GA1 and BRS SC1), two levels of water salinity (electrical conductivity of 0.5 and 4.0 dS m ) and three sources of Ca-complex (without, organic acids and amino acids). The traits measured at 60 days after sowing were gas exchange, chlorophyll indices, chlorophyll fluorescence, electrolyte leakage, and relative water content in the leaf limb. Under moderate water salinity, the application of Ca-complex in amino acids promoted increases of 49.84% and 43.71%, respectively, in the efficiency of water use and carboxylation. The application of complex sources increased the stability of cell membranes, reducing electrolyte leakage, providing higher relative water content in seedlings irrigated with moderately saline water. From the results, we conclude that Ca-complex sources have potential as modulators of moderately saline water stress in sour passion fruit seedlings.