کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8295645 | 1536759 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
OsPRX2 contributes to stomatal closure and improves potassium deficiency tolerance in rice
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: OsPRX2 contributes to stomatal closure and improves potassium deficiency tolerance in rice OsPRX2 contributes to stomatal closure and improves potassium deficiency tolerance in rice](/preview/png/8295645.png)
چکیده انگلیسی
Peroxiredoxins (Prxs) which are thiol-based peroxidases have been implicated in the toxic reduction and intracellular concentration regulation of hydrogen peroxide. In Arabidopsis thaliana At2-CysPrxB (At5g06290) has been demonstrated to be essential in maintaining the water-water cycle for proper H2O2 scavenging. Although the mechanisms of 2-Cys Prxs have been extensively studied in Arabidopsis thaliana, the function of 2-Cys Prxs in rice is unclear. In this study, a rice homologue gene of At2-CysPrxB, OsPRX2 was investigated aiming to characterize the effect of 2-Cys Prxs on the K+-deficiency tolerance in rice. We found that OsPRX2 was localized in the chloroplast. Overexpressed OsPRX2 causes the stomatal closing and K+-deficiency tolerance increasing, while knockout of OsPRX2 lead to serious defects in leaves phenotype and the stomatal opening under the K+-deficiency tolerance. Detection of K+ accumulation, antioxidant activity of transgenic plants under the starvation of potassium, further confirmed that OsPRX2 is a potential target for engineering plants with improved potassium deficiency tolerance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 495, Issue 1, 1 January 2018, Pages 461-467
Journal: Biochemical and Biophysical Research Communications - Volume 495, Issue 1, 1 January 2018, Pages 461-467
نویسندگان
Xiaohui Mao, Yanmei Zheng, Kaizhuan Xiao, Yidong Wei, Yongsheng Zhu, Qiuhua Cai, Liping Chen, Huaan Xie, Jianfu Zhang,