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| Content Provider | Springer Nature Link |
|---|---|
| Author | Guimarães, Francisco Valderez Augusto Lacerda, Claudivan Feitosa Marques, Elton Camelo Miranda, Maria Raquel Alcântara Abreu, Carlos Eduardo Braga Prisco, José Tarquinio Gomes Filho, Enéas |
| Copyright Year | 2011 |
| Abstract | The effects of supplemental Ca2+ on membrane integrity and lipid composition of cowpea plants submitted to salt stress (75 mM NaCl) were evaluated. The experimental design was factorial (2 × 6 + 1) corresponding to six saline treatments supplemented with CaCl2 and six saline treatments supplemented with CaSO4, both at 0.5, 1.25, 2.5, 5.0, 7.5 and 10.0 mM, plus control treatment (plants grown in half-strength Hoagland’s nutrient solution without supplemental calcium addition). Samples of leaves and root tips were analyzed for total lipid, glycolipid and fatty acid contents and membrane damage symptoms. Salt stress greatly reduced total lipid content in leaves and roots and caused great damage to membrane structures. In leaves, the glycolipid content was differently influenced by calcium treatments. Moreover, salinity increased the saturated/unsaturated fatty acid ratio in leaves and an increase in the concentration of calcium intensified this response. In roots, only saturated fatty acids were detected and their content was strongly influenced by salinity and very little by calcium treatments. Supplemental Ca2+ was unable to ameliorate the negative effects of salinity on the structural integrity and fluidity of plant membranes in cowpea. |
| Starting Page | 55 |
| Ending Page | 63 |
| Page Count | 9 |
| File Format | |
| ISSN | 01676903 |
| Journal | Plant Growth Regulation |
| Volume Number | 65 |
| Issue Number | 1 |
| e-ISSN | 15735087 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2011-02-20 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Supplemental Ca2+ Membrane lipids Salinity Vigna unguiculata Plant Anatomy/Development Plant Sciences Agriculture Plant Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Plant Science Agronomy and Crop Science |
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