Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong 226000, China.
Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
Int J Mol Sci. 2022 Jan 3;23(1):515. doi: 10.3390/ijms23010515.
Poplar is an illustrious industrial woody plant with rapid growth, providing a range of materials, and having simple post-treatment. Various kinds of environmental stresses limit its output. Plant annexin (ANN) is a calcium-dependent phospholipid-binding protein involved in plant metabolism, growth and development, and cooperatively regulating drought resistance, salt tolerance, and various stress responses. However, the features of the PtANN gene family and different stress responses remain unknown in poplar. This study identified 12 genes in the whole-genome and PtANNs divided into three subfamilies based on the phylogenetic tree. The PtANNs clustered into the same clade shared similar gene structures and conserved motifs. The 12 genes were located in ten chromosomes, and segmental duplication events were illustrated as the main duplication method. Additionally, the PtANN4 homogenous with AtANN1 was detected localized in the cytoplasm and plasma membrane. In addition, expression levels of were induced by multiple abiotic stresses, which indicated that PtANNs could widely participate in response to abiotic stress. These results revealed the molecular evolution of and their profiles in response to abiotic stress.
杨树是一种生长迅速、用途广泛、后处理简单的著名工业木本植物。各种环境胁迫限制了它的产量。植物 annexin (ANN) 是一种依赖于钙的磷脂结合蛋白，参与植物代谢、生长和发育，并协同调节抗旱性、耐盐性和各种应激反应。然而，杨树中 PtANN 基因家族的特征和不同的应激反应仍不清楚。本研究在全基因组中鉴定了 12 个基因，并根据系统发育树将 PtANN 分为三个亚家族。PtANN 聚类到同一分支，具有相似的基因结构和保守基序。这 12 个基因位于十个染色体上，并且片段复制事件被说明为主要的复制方法。此外，检测到与 AtANN1 同源的 PtANN4 定位于细胞质和质膜中。此外，在多种非生物胁迫下诱导了 的表达水平，表明 PtANN 可以广泛参与非生物胁迫的响应。这些结果揭示了 PtANN 的分子进化及其对非生物胁迫的响应特征。
