马铃薯StVac14基因功能的初步解析OA

Drought is a critical factor influencing the growth and development of potato(Solanum tu-berosum L.).The Vac14 gene plays a pivotal role in plant growth,development,and homeostasis regu-lation.In this study,comparative analysis of Vac14 homologous proteins in cultivated potato varieties demonstrated that Vac14 proteins are highly conserved among potato,tomato(Solanum lycopersi-cum),and pepper(Capsicum annuum).Expression level analysis revealed that StVac14 is ubiquitously expressed in seven different tissues and is significantly upregulated under drought stress.Following StVac14 gene knockout,the drought tolerance of the plants was remarkably reduced,the accumulation of proline was significantly decreased,and the content of malondialdehyde(MDA)was increased.This study clarifies the positive regulatory role of StVac14 in potato's response to drought stress,laying a solid foundation for further elucidating the mechanism by which the StVac14 gene mediates potato's response to drought stress.