A unique bZIP transcription factor imparting multiple stress tolerance in Rice

Rice
Priyanka DasAshwani Pareek

Abstract

Rice productivity is adversely affected by environmental stresses. Transcription factors (TFs), as the regulators of gene expression, are the key players contributing to stress tolerance and crop yield. Histone gene binding protein-1b (OsHBP1b) is a TF localized within the Saltol QTL in rice. Recently, we have reported the characterization of OsHBP1b in relation to salinity and drought tolerance in a model system tobacco. In the present study, we over-express the full-length gene encoding OsHBP1b in the homologous system (rice) to assess its contribution towards multiple stress tolerance and grain yield. We provide evidence to show that transgenic rice plants over-expressing OsHBP1b exhibit better survival and favourable osmotic parameters under salinity stress than the wild type counterparts. These transgenic plants restricted reactive oxygen species accumulation by exhibiting high antioxidant enzyme activity (ascorbate peroxidase and superoxide dismutase), under salinity conditions. Additionally, these transgenic plants maintained the chlorophyll concentration, organellar structure, photosynthesis and expression of photosynthesis and stress-related genes even when subjected to salinity stress. Experiments conducted for other ...Continue Reading

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Citations

Feb 19, 2020·Molecular Biology Reports·Mustaq Mohammed S WahabP Latha
Sep 26, 2020·Frontiers in Plant Science·Yan YuErxu Pi
Mar 19, 2020·International Journal of Molecular Sciences·Ming-Dong ZhuYan-Mei Lv
Mar 7, 2021·International Journal of Molecular Sciences·Kimberly S PonceGuoyou Ye

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Methods Mentioned

BETA
transgenic
PCR
salt stress
environmental stress
X-ray

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