Sun Yaqiang, Liu Yunxiao, Liang Jiakai, Luo Jiawei, Yang Fan, Feng Peien, Wang Hanyu, Guo Bocheng, Ma Fengwang, Zhao Tao
State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China.
Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China.
Front Plant Sci. 2023 Jan 18;13:1109784. doi: 10.3389/fpls.2022.1109784. eCollection 2022.
Plant AT-rich sequences and zinc-binding proteins (PLATZ) play crucial roles in response to environmental stresses. Nevertheless, PLATZ gene family has not been systemically studied in Rosaceae species, such as in apple, pear, peach, or strawberry. In this study, a total of 134 PLATZ proteins were identified from nine Rosaceae genomes and were classified into seven phylogenetic groups. Subsequently, the chromosomal localization, duplication, and collinearity relationship for apple PLATZ genes were investigated, and segmental duplication is a major driving-force in the expansion of PLATZ in . Expression profiles analysis showed that PLATZs had distinct expression patterns in different tissues, and multiple genes were significantly changed after drought and ABA treatments. Furthermore, the co-expression network combined with RNA-seq data showed that PLATZ might be involved in drought stress by regulating ABA signaling pathway. In summary, this study is the first in-depth and systematic identification of PLATZ gene family in Rosaceae species, especially for apple, and provided specific PLATZ gene resource for further functional research in response to abiotic stress.
植物富含AT序列和锌结合蛋白（PLATZ）在应对环境胁迫中发挥关键作用。然而，PLATZ基因家族尚未在蔷薇科物种（如苹果、梨、桃或草莓）中得到系统研究。在本研究中，从9个蔷薇科基因组中总共鉴定出134个PLATZ蛋白，并将其分为7个系统发育组。随后，研究了苹果PLATZ基因的染色体定位、复制和共线性关系，片段重复是苹果中PLATZ基因扩增的主要驱动力。表达谱分析表明，PLATZ在不同组织中具有不同的表达模式，干旱和脱落酸（ABA）处理后多个基因发生显著变化。此外，结合RNA测序数据的共表达网络表明，PLATZ可能通过调节ABA信号通路参与干旱胁迫。总之，本研究首次对蔷薇科物种，特别是苹果中的PLATZ基因家族进行了深入系统的鉴定，并为进一步开展非生物胁迫响应的功能研究提供了特定的PLATZ基因资源。
