作者：Alvarez-Gerding Ximena,Espinoza Carmen,Inostroza-Blancheteau Claudio,Arce-Johnson Patricio,
作者单位：Facultad de Agronomía e Ingeniería Forestal, Pontifica Universidad Catolica de Chile, Av. Vicu~a Mackenna 4560, Santiago, Chile, Facultad de Ciencias Biologicas, Departamento de Genetica Molecular y Microbiología, Pontificia Universidad Catolica de C
摘要：Plant stress induced by high salinity has leading to an important reduction in crop, yields. Due to their tropical origin, citrus fruits are highly sensitive to salts. Rootstocks are the root system of fruit trees, regulating ion uptake and transport to the canopy. Therefore,, increasing their salt tolerance could improve the salt tolerance of the fruit tree. For this, we genetically-transformed an important rootstock for lemon, Citrus macrophylla W, to constitutively express the CBF3/DREB1A gene from Arabidopsis, a well-studied salinity tolerance transcription factor. Transgenic lines showed normal size, with no dwarfism. Under salt stress, some transgenic lines showed greater growth, similar accumulation of chloride and sodium in the leaves and better stomatal conductance, in comparison to wild-type plants. Quantitative real-time analyses showed a similar expression of several CBF3/DREB1A target genes, such as COR15A, LEA 4/5, INV, SIP1, P5CS, GOLS, ADC2 and LKR/SDH, in transgenic lines and wild type plants, with the exception of INV that shows increased expression in line 4C15. Under salt stress, all measured transcript increased in both wild type and transgenics lines, with the exception of INV. Altogether, these results suggest a higher salt tolerance of transgenic C macrophylla plants induced by the overexpression of AtCBF3/DREB1A. (C) 2015 Published by Elsevier Masson SAS.
关键词：Salt tolerance,Abiotic stress,Genetic transformation,CBF3 transcription factor
文献注录：Alvarez-Gerding Ximena,Espinoza Carmen,Inostroza-Blancheteau Claudio,Arce-Johnson Patricio,. Molecular and physiological changes in response to salt stress in Citrus macrophylla W plants overexpressing Arabidopsis CBF3/DREB1A [J]. Plant Physiology and Biochemistry. 2015, 92: 71-80.
报/刊名：《Plant Physiology and Biochemistry》，发表于2015 / 第 92 期。
文献类型： [J] （文献级别：SCI刊物）
页码：第 71-80 页 / 共10 页