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病程相关基因 1 无表达蛋白 () 的特性及其功能意义的研究。

Characterization and Functional Implications of the Nonexpressor of Pathogenesis-Related Genes 1 () in .

机构信息

Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China.

Yunnan Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Kaiyuan 661600, China.

出版信息

Int J Mol Sci. 2022 Jul 20;23(14):7984. doi: 10.3390/ijms23147984.

DOI:10.3390/ijms23147984
PMID:35887330
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9317693/
Abstract

Sugarcane ( spp.) is an important sugar and energy crop worldwide. As a core regulator of the salicylic acid (SA) signaling pathway, nonexpressor of pathogenesis-related genes 1 () plays a significant role in the response of the plant to biotic and abiotic stresses. However, there is currently no report on the -like gene family in sugarcane. In this study, a total of 18 -like genes were identified in and classified into three clades (clade I, II, and III). The elements predicted in the promotors revealed that the sugarcane -like genes may be involved in various phytohormones and stress responses. RNA sequencing and quantitative real-time PCR analysis demonstrated that -like genes were differentially expressed in sugarcane tissues and under stress. In addition, a novel gene from spp. hybrid ROC22 was isolated by homologous cloning and validated to be a nuclear-localized clade II member. The gene was constitutively expressed in all the sugarcane tissues, with the highest expression level in the leaf and the lowest in the bud. The expression level of was decreased by the plant hormones salicylic acid (SA) and abscisic acid (ABA). Additionally, the transient expression showed that the gene plays a positive role in plants' defense response to and var. . This study provided comprehensive information for the -like family in sugarcane, which should be helpful for functional characterization of sugarcane -like genes in the future.

摘要

甘蔗（ spp.）是全球重要的糖料和能源作物。非表达病程相关基因 1（）作为水杨酸（SA）信号通路的核心调节因子，在植物对生物和非生物胁迫的响应中发挥重要作用。然而，目前尚无关于甘蔗中 -样基因家族的报道。本研究在 中鉴定了 18 个 -样基因，并将其分为三个分支（分支 I、II 和 III）。启动子中预测的元件表明，甘蔗 -样基因可能参与各种植物激素和应激反应。RNA 测序和定量实时 PCR 分析表明，-样基因在甘蔗组织和 胁迫下表达差异。此外，通过同源克隆从 spp.杂交品种 ROC22 中分离出一个新的 基因，并验证其为定位于细胞核的 II 类成员。该基因在所有甘蔗组织中均持续表达，在叶片中的表达水平最高，在芽中的表达水平最低。植物激素水杨酸（SA）和脱落酸（ABA）的表达水平降低。此外，瞬时表达表明该 基因在 植物对 和 var. 的防御反应中发挥积极作用。本研究为甘蔗中 -样家族提供了全面的信息，这对于未来甘蔗 -样基因的功能表征应该是有帮助的。

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