Zhongheng Xia: Plant Physiology First Author

Zhongheng Xia, co-first author of “The transcription factor PbrbZIP52 positively affects pear pollen tube longevity by promoting callose synthesis”

Education: 2019.09-, Fujian Agriculture and Forestry University (Bachelor)

Non-scientific Interests: Photography, calligraphy and painting, soccer

Brief bio: In 2019, I entered the Horticulture Academy, Fujian Agriculture and Forestry University and began my study under the supervision of Mr. Jianqing Chen. Fortunately, I entered the laboratory to study early in my freshman year, focusing on the industrial problem of unstable fruit setting in Fujian pear orchards. Under the guidance of the tutor, we carried out the research on the reproductive physiological mechanism related to the callus synthase (CalS) mediated cell wall rebuilding to maintain the pollen tube growth and complete double fertilization.

In this study, we revealed a novel molecular regulatory mechanism that PbrbZIP52 maintains pollen tube longevity in pear by regulating PbrCalS1B.1-mediated callose plug periodically formation. These findings bridge the gap in the delicate regulation mechanisms of callose plug formation in pollen tube. It provides distinctive insights into pear pollen tube growth and the seed setting rate, which may be relevant for breeding high-yielding pear cultivars.

作者：夏忠恒

现在职位：本科在读

教育经历：2019.09-至今，福建农林大学园艺学院严家显创新班（园艺）学生

兴趣爱好：摄影、书画、足球

个人简介：我是福建农林大学2019级园艺学院严家显（园艺）创新班的学生。本人师从陈建清老师，有幸大一提前进入实验室学习，聚焦福建梨园坐果不稳定的产业问题。在导师的指导下开展胼胝质合成酶（CalS）介导细胞壁重塑维持花粉管生长完成双受精的相关生殖生理机制研究。在本文中，我们揭示了一个关于PbrbZIP52通过A-box元件转录调控PbrCalS1B.1促进胼胝质合成维持梨花粉管寿命的机理。这些发现填补了花粉管胼胝质塞形成的分子调控机制的空白，为培育稳产、高产的梨品种提供了独特的见解。