Organ-specific defence strategies of pepper (Capsicum annuum L.) during early phase of water deficit
| Autor: | Ildikó Matušíková, Friederike Trognitz, Mouhssin Oufir, Dieter Kopecky, Astrid Heide Sziderics, Jean-Francois Hausman, Eva Wilhelm |
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| Rok vydání: | 2010 |
| Předmět: |
Sucrose
DNA Plant Pentoses Plant Science Biology Disaccharides Plant Roots Soil chemistry.chemical_compound Gene Expression Regulation Plant Stress Physiological Botany Pepper Proline Raffinose Gene Library Hexoses Oligonucleotide Array Sequence Analysis Expressed Sequence Tags Cadaverine Gene Expression Profiling fungi Water food and beverages General Medicine biology.organism_classification Droughts Plant Leaves Spermidine chemistry Putrescine Capsicum Agronomy and Crop Science Solanaceae |
| Zdroj: | Plant Cell Reports. 29:295-305 |
| ISSN: | 1432-203X 0721-7714 |
| DOI: | 10.1007/s00299-010-0822-z |
| Popis: | Drought is one of the major factors that limits crop production and reduces yield. To understand the early response of plants under nearly natural conditions, pepper plants (Capsicum annuum L.) were grown in a greenhouse and stressed by withholding water for 1 week. Plants adapted to the decreasing water content of the soil by adjustment of their osmotic potential in root tissue. As a consequence of drought, strong accumulation of raffinose, glucose, galactinol and proline was detected in the roots. In contrast, in leaves the levels of fructose, sucrose and also galactinol increased. Due to the water deficit cadaverine, putrescine, spermidine and spermine accumulated in leaves, whereas the concentration of polyamines was reduced in roots. To study the molecular basis of these responses, a combined approach of suppression subtractive hybridisation and microarray technique was performed on the same material. A total of 109 unique ESTs were detected as responsive to drought, while additional 286 ESTs were selected from the bulk of rare transcripts on the array. The metabolic profiles of stressed pepper plants are discussed with respect to the transcriptomic changes detected, while attention is given to the differences between defence strategies of roots and leaves. |
| Databáze: | OpenAIRE |
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