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The Solanum lycopersicum WRKY3 Transcription Factor SlWRKY3 Is Involved in Salt Stress Tolerance in Tomato
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SYSNO ASEP 0477137 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The Solanum lycopersicum WRKY3 Transcription Factor SlWRKY3 Is Involved in Salt Stress Tolerance in Tomato Author(s) Hichri, I. (BE)
Muhovski, Y. (BE)
Žižková, Eva (UEB-Q) ORCID
Dobrev, Petre (UEB-Q) RID, ORCID
Gharbi, E. (BE)
Franco-Zorrilla, J.M. (ES)
Lopez-Vidriero, I. (ES)
Solano, R. (ES)
Clippe, A. (NL)
Errachid, A. (BE)
Motyka, Václav (UEB-Q) RID, ORCID
Lutts, S. (BE)Number of authors 12 Article number 1343 Source Title Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 8, JUL 31 (2017)Number of pages 18 s. Language eng - English Country CH - Switzerland Keywords agrobacterium-mediated transformation ; transgenic arabidopsis plants ; dna-binding ; salinity tolerance ; defense responses ; drought tolerance ; abiotic stresses ; water-stress ; genes ; tobacco ; Solanum lycopersicum ; SlWRKY3 ; transcription factor ; salinity tolerance ; plant physiology Subject RIV EF - Botanics OECD category Plant sciences, botany R&D Projects GA16-14649S GA ČR - Czech Science Foundation (CSF) Institutional support UEB-Q - RVO:61389030 UT WOS 000406846000001 DOI 10.3389/fpls.2017.01343 Annotation Salinity threatens productivity of economically important crops such as tomato (Solanum lycopersicum L.). WRKY transcription factors appear, from a growing body of knowledge, as important regulators of abiotic stresses tolerance. Tomato SlWRKY3 is a nuclear protein binding to the consensus CGTTGACC/T W box. SlWRKY3 is preferentially expressed in aged organs, and is rapidly induced by NaCl, KCl, and drought. In addition, SlWRKY3 responds to salicylic acid, and 35S::SlWRKY3 tomatoes showed under salt treatment reduced contents of salicylic acid. In tomato, overexpression of SlWRKY3 impacted multiple aspects of salinity tolerance. Indeed, salinized (125 mM NaCl, 20 days) 35S:: SlWRKY3 tomato plants displayed reduced oxidative stress and proline contents compared to WT. Physiological parameters related to plant growth (shoot and root biomass) and photosynthesis (stomatal conductance and chlorophyll a content) were retained in transgenic plants, together with lower Na+ contents in leaves, and higher accumulation of K+ and Ca2+. Microarray analysis confirmed that many stress-related genes were already up-regulated in transgenic tomatoes under optimal conditions of growth, including genes coding for antioxidant enzymes, ion and water transporters, or plant defense proteins. Together, these results indicate that SlWRKY3 is an important regulator of salinity tolerance in tomato. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2018
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