Xinmin Lv: Plant Physiology First Author

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Xinmin Lv, co-first author of “RBP differentiation contributes to selective transmissibility of OPT3 mRNAs”

Current position: PhD candidate in China Agricultural University, College of Horticulture (Beijing, China)

Education: B.Sc., M.Sc., in Horticulture at Shihezi University (China); Ph.D. in Pomology at China Agricultural University (China)

Non-scientific Interests: hiking, reading

Brief bio: I started studying for a doctoral degree in Pomology, at CAU in 2017. During the doctoral period, I was mainly engaged in the research of long-distance mRNA movement involved in the iron deficiency response of Malus plants. As one of the four major fruits in the world, apples have a very wide geographical distribution. However, iron deficiency in soil seriously affects the yield and quality of apples. Therefore, our lab mainly studies the physiological and molecular biological mechanisms of apples in response to iron deficiency. We made some research about the molecular mechanism of apple response to iron deficiency from a new perspective of long-distance mRNA movement. In our research, Malus domestica oligopeptide transporter3 (MdOPT3) was found to be a long distance moved mRNA that responds to iron deficiency, while the Arabidopsis oligopeptide transporter 3 (AtOPT3) mRNA does not move from the shoot to root. The mutual heterologous expression of the two types of mRNA indicated that the immobile AtOPT3 moved from leaf to root in the two woody plants (apple and poplar), while the mobile MdOPT3 was found in two herbaceous plants (Arabidopsis thaliana). And Tomato) become immovable. In addition, we demonstrated that the different dissemination of OPT3 in Arabidopsis and apples may be caused by different RNA binding proteins (RBP) in herbs and woody plants.

姓名：吕新民

目前职位：中国农业大学，园艺学院，在读博士

教育经历：石河子大学园艺学学士、硕士（2010-2017），中国农业大学果树学博士（2017-2021）

兴趣爱好：徒步，阅读，

个人简介：本人于2017年起在中国农业大学园艺学院果树学系攻读博士学位。博士期间主要从事mRNA长距离传递参与苹果属植物缺铁应答反应的相关研究。苹果作为世界四大水果之一，地域分布极为广泛，但土壤缺铁严重影响着苹果产量和品质，因此我们实验室主要研究苹果响应缺铁的生理与分子生物学机制。作为多年生木本果树，苹果主要利用嫁接等方式进行繁殖、并在苹果生产上以嫁接复合体的形式生产果实，砧木对接穗树体生长发育的影响很大；因此，我们从mRNA在砧穗间长距离传递这个新的角度研究苹果响应缺铁胁迫的分子机制。在我的研究中，苹果寡肽转运蛋白3 (Malus domestica oligopeptide transporter3,  MdOPT3) 被证明以mRNA的形式从叶到根长距离运输以调节 Fe 吸收，而拟南芥寡肽转运蛋白3 (Arabidopsis oligopeptide transporter 3, AtOPT3不能以mRNA的形式从地上部传递到根部。两种传递性不同的mRNA 的相互异源表达表明，不可移动的AtOPT3 在两种木本植物（苹果和杨树）中能够从叶移动到根，而可移动的MdOPT3在两种草本植物（拟南芥和番茄）中变得不可移动。此外，我们证明了拟南芥和苹果中 OPT3 的不同传递性可能是由草本和木本植物中不同的 RNA 结合蛋白 (RBP)物种间分化引起的。