Plant Mol Biol (2017) 94:531–548 DOI 10.1007/s11103-017-0624-6 The function of OsbHLH068 is partially redundant with its homolog, AtbHLH112, in the regulation of the salt stress response but has opposite functions to control flowering in Arabidopsis 1 1 1 2 Hung‑Chi Chen · Vicki Hsieh‑Feng · Pei‑Chun Liao · Wan‑Hsing Cheng · 1 1 3 1 Li‑Yu Liu · Yun‑Wei Yang · Ming‑Hsin Lai · Men‑Chi Chang Received: 1 November 2016 / Accepted: 12 June 2017 / Published online: 19 June 2017 © The Author(s) 2017. This article is an open access publication Abstract and promotes root elongation, whereas AtbHLH112 Key message The homologous genes OsbHLH068 and knock-out mutant displays an opposite phenotype. Both AtbHLH112 have partially redundant functions in the OsbHLH068-overexpressing transgenic Arabidopsis seed- regulation of the salt stress response but opposite func‑ lings and the Atbhlh112 mutant display a late-flowering tions to control flowering in Arabidopsis. phenotype. Moreover, the expression of OsbHLH068-GFP Abstract The transcription factor (TF) basic/Helix-Loop- driven by an AtbHLH112 promoter can compensate for Helix (bHLH) is important for plant growth, development, the germination deficiency in the Atbhlh112 mutant, but and stress responses. OsbHLH068, which is a homologous the delayed-flowering phenotype tends to be more severe. gene of AtbHLH112 that is up-regulated under drought Further analysis by microarray and qPCR indicated that the and
Plant Molecular Biology – Springer Journals
Published: Jun 19, 2017
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