Physiological responses and aquaporin expression upon drought and osmotic stress in a conservative vs prodigal Fragaria x ananassa cultivar
| Autor: | Marie-Christine Van Labeke, Britt Merlaen, Ellen De Keyser, Olivier Leroux, François Chaumont, Lei Ding |
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| Přispěvatelé: | UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Stomatal conductance (g(s)) Stomatal conductance Osmotic shock Physiology Aquaporin Plant Science Biology Plasma membrane intrinsic protein (PIP) Osmosis Aquaporins 01 natural sciences Strawberry Fragaria Plant Roots 03 medical and health sciences chemistry.chemical_compound Abscisic acid Gene Expression Regulation Plant Osmotic Pressure Stress Physiological parasitic diseases Genetics Cultivar Plant Proteins Root hydraulic conductivity (Lp(r)) Water transport fungi Plant physiology food and beverages Water Droughts Plant Leaves Horticulture 030104 developmental biology Leaf water potential (ψ(L)) chemistry Tonoplast intrinsic protein (TIP) 010606 plant biology & botany |
| Zdroj: | Plant Physiology & Biochemistry, Vol. 145, p. 95-106 (2019) |
| ISSN: | 1873-2690 |
| Popis: | In order to improve the understanding of plant water relations under drought stress, the water use behavior of two Fragaria x ananassa Duch. cultivars, contrasting in their drought stress phenotype, is identified. Under drought, stomatal closure is gradual in Figaro. Based on this, we associate Figaro with conservative water use behavior. Contrarily, drought stress causes a sudden and steep decrease in stomatal conductance in Flair, leading to the identification of Flair as a prodigal water use behavior cultivar. Responses to progressive drought on the one hand and an osmotic shock on the other hand are compared between these two cultivars. Tonoplast intrinsic protein mRNA levels are shown to be upregulated under progressive drought in the roots of Figaro only. Otherwise, aquaporin expression upon drought or osmotic stress is similar between both cultivars, i.e. plasma membrane intrinsic proteins are downregulated under progressive drought in leaves and under short term osmotic shock in roots. In response to osmotic shock, root hydraulic conductivity did not change significantly and stomatal closure is equal in both cultivars. De novo abscisic acid biosynthesis is upregulated in the roots of both cultivars under progressive drought. |
| Databáze: | OpenAIRE |
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