4.3 Article

NaCl tolerance in Lycopersicon pennellii introgression lines: QTL related to physiological responses

Journal

BIOLOGIA PLANTARUM
Volume 55, Issue 3, Pages 461-468

Publisher

ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-011-0111-x

Keywords

calcium; Lycopersicon esculentum; potassium; salinity; sodium; tomato

Categories

Funding

  1. Scientific and Technological Research Council of Turkey [TBAG 103T173]
  2. Prime Ministry State Planning Organization of the Republic of Turkey [2003K120690]
  3. Izmir Institute of Technology [IYTE 2003-11]

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The growth and ion content of salt sensitive Lycopersicon esculentum Mill. cv. M82 and salt tolerant L. pennellii Correll accession LA716 were examined under both control and stress conditions (150 mM NaCl). L. esculentum grew more vigorously than L. pennellii under optimal conditions, however, L. pennellii was able to maintain its growth better than cultivated tomato when the plants were exposed to salinity. Sodium content of both L. esculentum and L. pennellii increased as a result of NaCl stress. In addition, both species showed reduced potassium and calcium content due to salinity. The physiological traits were also measured in a population of 52 L. pennellii introgression lines grown under both normal and stress conditions. A total of 311 quantitative trait loci (QTL) were identified for the studied traits: plant height, stem diameter, leaf number, leaf and root fresh and dry mass, and sodium, potassium and calcium contents. Some of the loci (124) were identified under both control and stress conditions while 86 QTL were identified only under non-stress conditions and 101 loci were identified only under NaCl stress.

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