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Irulappan V, Park HW, Han SY, Kim MH, Kim JS. Genome-wide identification of a novel Na + transporter from Bienertia sinuspersici and overexpression of BsHKT1;2 improved salt tolerance in Brassica rapa. FRONTIERS IN PLANT SCIENCE 2023; 14:1302315. [PMID: 38192689 PMCID: PMC10773568 DOI: 10.3389/fpls.2023.1302315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/24/2023] [Indexed: 01/10/2024]
Abstract
Salt stress is an ever-increasing stressor that affects both plants and humans. Therefore, developing strategies to limit the undesirable effects of salt stress is essential. Sodium ion exclusion is well known for its efficient salt-tolerance mechanism. The High-affinity K+ Transporter (HKT) excludes excess Na+ from the transpiration stream. This study identified and characterized the HKT protein family in Bienertia sinuspersici, a single-cell C4 plant. The HKT and Salt Overly Sensitive 1 (SOS1) expression levels were examined in B. sinuspersici and Arabidopsis thaliana leaves under four different salt stress conditions: 0, 100, 200, and 300 mM NaCl. Furthermore, BsHKT1;2 was cloned, thereby producing stable transgenic Brassica rapa. Our results showed that, compared to A. thaliana as a glycophyte, the HKT family is expanded in B. sinuspersici as a halophyte with three paralogs. The phylogenetic analysis revealed three paralogs belonging to the HKT subfamily I. Out of three copies, the expression of BsHKT1;2 was higher in Bienertia under control and salt stress conditions than in A. thaliana. Stable transgenic plants overexpressing 35S::BsHKT1;2 showed higher salt tolerance than non-transgenic plants. Higher biomass and longer roots were observed in the transgenic plants under salt stress than in non-transgenic plants. This study demonstrates the evolutionary and functional differences in HKT proteins between glycophytes and halophytes and associates the role of BsHKT1;2 in imparting salt tolerance and productivity.
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Affiliation(s)
| | | | | | | | - Jung Sun Kim
- Genomics Division, Department of Agricultural Bio-Resources, National Institute of Agricultural Sciences, Jeonju, Republic of Korea
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Aragão J, de Lima GS, de Lima VLA, da Silva AAR, Capitulino JD, Caetano EJM, da Silva FDA, Soares LADA, Fernandes PD, de Farias MSS, Gheyi HR, Borborema LDA, Arruda TFDL, Santos LFS. Effect of Hydrogen Peroxide Application on Salt Stress Mitigation in Bell Pepper ( Capsicum annuum L.). PLANTS (BASEL, SWITZERLAND) 2023; 12:2981. [PMID: 37631192 PMCID: PMC10458158 DOI: 10.3390/plants12162981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
The present study aimed to evaluate the effects of the foliar application of hydrogen peroxide on the attenuation of salt stress on the growth, photochemical efficiency, production and water use efficiency of 'All Big' bell pepper plants. The experiment was conducted under greenhouse conditions in Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 5 × 5 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.8, 1.2, 2.0, 2.6 and 3.2 dS m-1) and five concentrations of hydrogen peroxide (0, 15, 30, 45 and 60 μM), with three replicates. Foliar application of hydrogen peroxide at concentration of 15 μM attenuated the deleterious effects of salt stress on photochemical efficiency, biomass accumulation and production components of bell pepper plants irrigated using water with an electrical conductivity of up to 3.2 dS m-1. Foliar spraying of hydrogen peroxide at a concentration of 60 μM intensified the effects of salt stress. The 'All Big' bell pepper was classified as moderately sensitive to salt stress, with an irrigation water salinity threshold of 1.43 dS m-1 and a unit decrease of 8.25% above this salinity level.
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Affiliation(s)
- Jéssica Aragão
- Department of Agricultural Engineering, Federal University of Viçosa, Viçosa 36570-900, MG, Brazil;
| | - Geovani Soares de Lima
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Vera Lúcia Antunes de Lima
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - André Alisson Rodrigues da Silva
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Jessica Dayanne Capitulino
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Edmilson Júnio Medeiros Caetano
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Francisco de Assis da Silva
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | | | - Pedro Dantas Fernandes
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Maria Sallydelândia Sobral de Farias
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Hans Raj Gheyi
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Lucyelly Dâmela Araújo Borborema
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Thiago Filipe de Lima Arruda
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
| | - Larissa Fernanda Souza Santos
- Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil; (V.L.A.d.L.); (A.A.R.d.S.); (J.D.C.); (E.J.M.C.); (F.d.A.d.S.); (P.D.F.); (M.S.S.d.F.); (H.R.G.); (L.D.A.B.); (T.F.d.L.A.); (L.F.S.S.)
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