College of Horticulture, Northwest A&F University, Xianyang 712100, China.
State Agriculture Ministry Laboratory of Northwest Horticultural Plant Germplasm Resources & Genetic Improvement, Northwest A&F University, Xianyang 712100, China.
Int J Mol Sci. 2022 Jan 28;23(3):1502. doi: 10.3390/ijms23031502.
Tomato spotted wilt virus impacts negatively on a wide range of economically important plants, especially tomatoes. When plants facing any pathogen attack or infection, increase the transcription level of plant genes that are produced pathogenesis-related (PR) proteins. The aim of this study is a genome-wide identification of PR-10 superfamily and comparative analysis of and gene functions against tomato responses to biotic stress (TSWV) to systemic resistance in tomato. Forty-five candidate genes were identified, with a length of 64-210 amino acid residues and a molecular weight of 7.6-24.4 kDa. The gene was found on ten of the twelve chromosomes, and it was determined through a genetic ontology that they were involved in six biological processes and molecular activities, and nine cellular components. Analysis of the transcription level of PR-10 family members showed that the gene (Solyc09g090980) has high expression levels in some parts of the tomato plant. and gene transcription and activity in tomato leaves were strongly induced by TSWV infection, whereas H8 plants having the highest significantly upregulated expression of and gene after the inoculation of TSWV, and TSWV inoculated in M82 plants showed significantly upregulated expression of gene comparatively lower than H8 plants. There was no significant expression of gene of TSWV inoculated in M82 plants and then showed highly significant correlations between and genes at different time points in H8 plants showed significant correlations compared to M82 plants after the inoculation of TSWV; a heat map showed that these two genes may also participate in regulating the defense response after the inoculation of TSWV in tomato.
番茄斑萎病毒对广泛的经济重要植物,尤其是番茄,产生负面影响。当植物面临任何病原体攻击或感染时,会增加植物基因的转录水平,这些基因产生与发病相关(PR)的蛋白质。本研究的目的是在番茄中对生物胁迫(TSWV)系统抗性进行全基因组鉴定和 PR-10 超家族的比较分析。鉴定出 45 个候选基因,长度为 64-210 个氨基酸残基,分子量为 7.6-24.4 kDa。基因存在于 12 条染色体中的 10 条上,通过遗传本体论确定它们参与了 6 个生物过程和分子活动以及 9 个细胞成分。对 PR-10 家族成员转录水平的分析表明,基因(Solyc09g090980)在番茄植物的某些部位具有高表达水平。和基因在番茄叶片中的转录和活性在 TSWV 感染后被强烈诱导,而 H8 植株在接种 TSWV 后表现出最高的和基因显著上调表达,而 M82 植株在接种 TSWV 后表现出相对较低的和基因显著上调表达。在接种 TSWV 的 M82 植株中,基因没有明显表达,然后在 H8 植株中,不同时间点的基因和基因之间表现出显著的相关性,与 M82 植株相比,接种 TSWV 后的相关性显著;热图显示这两个基因也可能参与调节番茄接种 TSWV 后的防御反应。