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Attempt to select cucumber (Cucumis sativus L.) double haploid lines to downy mildew tolerance by molecular markers National Institute of Agronomic Research
Śmiech, M.; Sztangret-Wiśniewska, J.; Gałecka, T.; Korzeniewska, A.; Marzec, M.; Kolakowska, G.; Piskurewicz, U.; Niemirowicz-Szczytt, K..
The main goal was to identify RAPD molecular markers associated with downy mildew resistance. RAPD markers that differentiated susceptible and resistant H and DH plants were identified. Further research is needed to verify linkage between the identified markers and the susceptible and resistant phenotypes.
Tipo: Poster Palavras-chave: Pseudoperonospora cubensis; Haploid; Double haploid; RAPD; Cucumber sativus; Downy mildew; Resistance.
Ano: 2008 URL: http://hdl.handle.net/2174/244
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Far-red light inhibits germination through DELLA-dependent stimulation of ABA synthesis and ABI3 activity Inra
Piskurewicz, U.; Tureckova, V.; Lacombe, É.; Lopez-Molina, L..
Under the canopy, far-red (FR) light represses seed germination by inactivating phytochrome photoreceptors. This elicits a decrease in gibberellins (GA) levels and an increase in abscisic acid (ABA) levels. GA promotes germination by enhancing the proteasome-mediated destruction of DELLA repressors. ABA prevents germination by stimulating the expression of ABI repressors. How phytochromes elicit changes in hormone levels or how GA- and ABA-dependent signals are coordinated to repress germination remains poorly understood. We show that repression of germination by FR light involves stabilized DELLA factors GAI, RGA and RGL2 that stimulate endogenous ABA synthesis. In turn, ABA blocks germination through the transcription factor ABI3. The role of PIL5, a...
Tipo: Journal Article Palavras-chave: ABSCISIC ACID; DELLA; GIBBERELLINS; PHYTOCHROME; SEED GERMINATION.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010a84de941&uri=/notices/prodinra1/2010/12/
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