کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8886921 1628024 2018 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Overexpression of both AcSVP1 and AcSVP4 delays budbreak in kiwifruit A. chinensis var. deliciosa, but only AcSVP1 delays flowering in model plants
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Overexpression of both AcSVP1 and AcSVP4 delays budbreak in kiwifruit A. chinensis var. deliciosa, but only AcSVP1 delays flowering in model plants
چکیده انگلیسی
Kiwifruit SHORT VEGETATIVE PHASE (AcSVP) genes have been implicated in regulation of dormancy and flowering. Previously, we have shown that AcSVP2 and AcSVP3 have different effects on dormancy and flowering in transgenic kiwifruit and model plants. The role of two homologous genes, AcSVP1 and AcSVP4, remained unclear. Here, AcSVP1 and AcSVP4 were functionally characterized by ectopic expression in Actinidia species which show different chilling requirements for budbreak, as well as the model plant tobacco. Overexpression of AcSVP1 and AcSVP4 delayed spring budbreak in a high-chill A. chinensis var. deliciosa, but did not affect budbreak and flowering in a low-chill A. eriantha. Overexpression of AcSVP1 delayed flowering and seed germination in tobacco, while overexpression of AcSVP4 had only minor effects. Analysis of cis-regulatory motifs in the promoter regions of AcSVP1 and AcSVP4 and promoter transactivation assays revealed that AcSVP1 and AcSVP4 may be controlled by similar transcription factors, suggesting a conserved regulatory mechanism and a synergistic role for AcSVP1 and AcSVP4 in preventing premature kiwifruit budbreak during winter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 153, September 2018, Pages 262-270
نویسندگان
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