Ethylene mediated physiological response for in vitro development of salinity tolerant tomato

Tomato responses to salinity stress: From morphological traits to genetic changes

“…Salt tolerant tomato plants were successfully obtained by Gilbert et al by transferring the gene HAL1 from Saccharomyces cerevisiae, involved in Na + transport and K + regulation, which improved the in vivo and in vitro salt tolerance of transgenic tomato plants, by promoting the retention of K + and the growth of the plants (Gisbert et al, 2000); by Goel et al, who demonstrated that by transforming the tomato cultivar 'Pusa Ruby' with the bacterial codA gene from Arthrobacter globiformis encoding for choline oxidase, the production of glycine betaine was induced, the content of relative water, chlorophyll and proline increased, also the overall tolerance of the plants under saline stress was improved (Goel et al, 2011); by Jia et al, who transferred the BADH gene from Atriplex hortensis in 'Bailichun' tomato cultivar, obtaining a normal growth and development of the plants treated with 120 mM NaCl (Jia et al, 2002); by Li et al, who isolated the SpPKE1 a lysine-, glutamic-and proline-rich type gene from the abiotic resistant Solanum pennellii LA0716 and transferred it to S. lycopersicum cv. M82 or by transferring the Osmotin gene from tobacco into tomato plants, an increased tolerance to salt stress was obtained, highlighted by better cell signaling, ROS scavenging, the content of carbohydrates, amino acids, polyols and performance of the antioxidant and photosynthetic systems (Goel et al, 2011;Li et al, 2019a;Rao et al, 2020).…”

“…root length, chlorophyll, proline and antioxidant enzymes contents) were obtained in the transgenic tomato, where the expression of other genes related to salinity stress was upregulated (RBOHC, TAS14, HVA22, PR5 and LHA1). The overexpression of SlERF5 gene (ethylene response factor) in transgenic tomato led to an increased tolerance to salinity by improving the relative water content (Rao et al, 2020). Albacete et al (2014) recorded improved fruit yield, hormone concentrations, and sugar content in transgenic tomato due to the overexpression of a gene coding for isopentenyl transferase, an enzyme involved in cytokines biosynthesis -IPT gene and a cell wall invertase gene -CIN1.…”