02046naa a2200205 a 450000100080000000500110000800800410001910000220006024501090008226000090019152013390020065300100153965300150154965300250156465300280158970000180161770000180163570000170165377301700167011219422014-10-10       2014    bl uuuu     u00u1 u    #d1 aMARTINI, L. F. D.  aEffect of BISPYRIBAC-SODIUM and cold stress on gene expression of rice seedlings.h[electronic resource]  c2014  aAbiotic stresses are the main factors that restrict some areas to practice agriculture worldwide. Rice, a staple food for more than half of the world?s population, has limited tolerance to cold stress. In subtropical areas, early planting exposes rice seedlings to cold stress which impairs their development, turning them more vulnerable to other stresses such as herbicide injury. The objective of this study was to evaluate the effect of cold stress combined with bispyribac-sodium application on molecular patterns of rice seedlings. A growth chamber experiment was conducted twice in 2012 at University of Arkansas, Fayetteville, AR, US. The treatments were composed by: factor A - rice cultivars: IRGA 424 (cold tolerant) and EPAGRI 109 (cold susceptible); factor B - bispyribac-sodium application and a untreated check; and factor C - cold for two days before herbicide spray (short term acclimation), cold for two days immediately after spray (non-acclimated plants); cold since emergence (long term acclimation) and a warm check. Quantitative gene expression at 48 hours after herbicide application (HAT) of OsRAN2 and OsFAD8 - cold; OsGSTL2 and CYP72A21 - herbicide related markers were recorded. OsRAN2 and OsGSTL2 showed good response to cold, herbicide and cultivars, characterizing a cross-talk and indicating that these  aArroz  across-talk  aherbicide metabolism  areactive oxygen species1 aBURGOS, N. R.1 aNOLDIN, J. A.1 aAVILA, L. A.  tIn: CONGRESSO BRASILEIRO DA CI??NCIA DAS PLANTAS DANINHAS, 29., 2014, Gramado, RS. Anais... Londrina, PR: Sociedade Brasileira da Ci??cia das Plantas Daninhas, 2014.