Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China.
School of Life Sciences, Zhaoqing University, Zhaoqing 526061, China.
Genes (Basel). 2023 Jan 13;14(1):209. doi: 10.3390/genes14010209.
Mitochondria are responsible for energy generation, as well as key metabolic and signaling pathways, and thus affect the entire developmental process of plants as well as their responses to stress. In metazoans, mitochondrial transcription termination factors (mTERFs) are known to regulate mitochondrial transcription. mTERFs have also been discovered in plants, but only a few of these proteins have been explored for their biological functions. Here, we report a role in root growth for mitochondria-associated protein in peanut ( L.). Overexpressing significantly stimulated the growth of peanut hairy roots and transgenic . Surprisingly, is predominantly expressed in the root meristem where it increases mitochondrial abundance. binding to mtDNA was enriched in the and regions, suggesting it is related to the accumulation of mitochondrial ribosomes. Peanut is one of the main oil crops and the important source of edible oil and likely affects agronomic traits related to root growth in different peanut cultivars. We propose that peanut is an important protein for root growth due to its role in regulating mitochondrial abundance.
线粒体负责能量产生以及关键的代谢和信号通路，因此会影响植物的整个发育过程及其对压力的反应。在线粒体转录终止因子（mTERF）在后生动物中已知能调节线粒体转录。在植物中也发现了 mTERFs，但仅对其中一些蛋白质的生物学功能进行了探索。在这里，我们报道了花生（Arachis hypogaea）中与线粒体相关的蛋白在根生长中的作用。过表达 显著刺激了花生毛状根的生长和转基因 的生长。令人惊讶的是， 在根分生组织中表达，其中增加了线粒体的丰度。在 和 区域中富集了 与 mtDNA 的结合，表明它与线粒体核糖体的积累有关。花生是主要的油料作物之一，是食用油的重要来源，而 可能影响不同花生品种中与根生长有关的农艺性状。我们提出，花生 是一种重要的与根生长有关的蛋白，因为它在调节线粒体丰度方面发挥着作用。
