TY  - EJOU
AU  - Chen, Ying 
AU  - Liu, Chuanqiang 
AU  - He, Qingqing 
AU  - Li, Jianjian 
AU  - Wang, Jingjing 
AU  - Li, ng 
AU  - Yao, Xiang 
AU  - Zhou, Shenghao 
AU  - Wang, Haoran 

TI  - <i>EoPHR2</i>, a Phosphate Starvation Response Transcription Factor, Is Involved in Improving Low-Phosphorus Stress Resistance in <i>Eremochloa ophiuroides</i>
T2  - Phyton-International Journal of Experimental Botany

PY  - 2022
VL  - 91
IS  - 3
SN  - 1851-5657

AB  - As a macronutrient, Phosphorus (P) takes many roles in plant growth and development. It should be significant to explore the molecular mechanism of low-phosphorus stress response of plants. Phosphate starvation response (PHR) transcription factors play important roles in response to phosphorus deficiency stress in plants. In this study, we isolated a gene related to the plant phosphorus signaling system from the acid-soil-resistant centipedegrass (<i>Eremochloa ophiuroides</i> [Munro] Hack.), termed <i>EoPHR2</i>. The subcellular localization of EoPHR2 protein was observed to be nuclear located. The expression patterns of <i>EoPHR2</i> in different tissues and Al/Pi-stress conditions were analyzed by qRT-PCR, they suggested a potential role in response to the multiple-stress under acid soil adversity. Based on the functional identification through transgenic plants, we found that (1) <i>EoPHR2</i> is involved in the Pi-signaling pathway, and (2) overexpression of <i>EoPHR2</i> mimics Pi-starvation signalling resulting on enhanced roots whether under Pi-deficiency stress or not. In conclusion, EoPHR2 transcription factor plays a role in response to the multiple stresses under acid soil conditions, improving the low-phosphorus stress resistance of <i>Eremochloa ophiuroides</i>.
KW  - Phosphate starvation response; transcription factor; phosphorus signaling system; acid soil adaptability; <i>Eremochloa ophiuroides</i>

DO  - 10.32604/phyton.2022.017633