大豆疫霉细胞凋亡相关基因的鉴定与表达分析 |
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引用本文:陈琳琳,耿雪晶,王雯,张雄,窦道龙,李洪连.大豆疫霉细胞凋亡相关基因的鉴定与表达分析.植物保护学报,2018,45(4):812-818 |
DOI:10.13802/j.cnki.zwbhxb.2018.2017017 |
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作者 | 单位 | E-mail | 陈琳琳 | 河南农业大学植物保护学院, 小麦玉米作物学国家重点实验室, 河南省粮食作物协同创新中心, 郑州 450002 | | 耿雪晶 | 河南农业大学植物保护学院, 小麦玉米作物学国家重点实验室, 河南省粮食作物协同创新中心, 郑州 450002 | | 王雯 | 南京农业大学植物保护学院, 南京 210095 | | 张雄 | 南京农业大学植物保护学院, 南京 210095 | | 窦道龙 | 南京农业大学植物保护学院, 南京 210095 | | 李洪连 | 河南农业大学植物保护学院, 小麦玉米作物学国家重点实验室, 河南省粮食作物协同创新中心, 郑州 450002 | honglianli@sina.com |
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中文摘要:为探讨大豆疫霉Phytophthora sojae细胞凋亡潜在的调控机制,根据已知的细胞凋亡蛋白,利用在线工具BLASTP、pFAM和SMART在大豆疫霉蛋白组数据库中鉴定细胞凋亡同源蛋白并构建其进化树,通过转录组数据和实时荧光定量PCR技术分析细胞凋亡相关基因在大豆疫霉生长、发育及侵染不同时期的表达情况。结果显示:在大豆疫霉中共鉴定到13个细胞凋亡同源蛋白,包括核酸内切酶G (PsNUC1)、细胞色素c (PsCYCS)、凋亡诱导因子(PsAIF)、丝氨酸蛋白酶(PsHtrA-1、PsHtrA-2和PsHtrA-3)、多聚ADP核糖聚合酶(PsPARP-1、PsPARP-2和PsPARP-3)和TatD核酸酶(PsTatD1、PsTatD2、PsTatD3和PsTatD4)。在进化上,PsNUC1、PsCYCS、PsAIF、PsHtrA-1、PsPARP-1、PsPARP-2、PsPARP-3、PsTatD1和PsTatD2与人及秀丽隐杆线虫Caenorhabditis elegans的同源蛋白亲缘关系较近,而与真菌相关蛋白亲缘关系较远,PsHtrA-2、PsHtrA-3、PsTatD3和PsTatD4与酿酒酵母Saccharomyces cerevisiae相关蛋白相似度更高,说明大豆疫霉细胞凋亡蛋白在进化中发生了较大变异。大豆疫霉细胞凋亡相关基因PsHtrA-1和PsRARP-1在孢子囊阶段诱导表达,PsHtrA-2和PsRARP-2在游动孢子阶段上调表达,PsAIF、PsHtrA-3、PsRARP-1和PsRARP-2在侵染阶段明显诱导表达,PsCYCS在侵染阶段下调表达。细胞凋亡相关基因在大豆疫霉不同阶段的表达模式有较大差异,说明细胞凋亡在大豆疫霉生长、发育及致病过程中具有重要作用。 |
中文关键词:大豆疫霉 细胞凋亡 基因鉴定 表达分析 |
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Identification and expression analysis of apoptosis-related genes in soybean stem and root rot pathogen Phytophthora sojae |
Author Name | Affiliation | E-mail | Chen Linlin | Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Sciences, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China | | Geng Xuejing | Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Sciences, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China | | Wang Wen | College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China | | Zhang Xiong | College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China | | Dou Daolong | College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China | | Li Honglian | Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Sciences, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China | honglianli@sina.com |
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Abstract:To investigate the possible mechanisms of apoptosis in soybean stem and root rot pathogen Phytophthora sojae, the apoptosis-related proteins in P. sojae were identified based on known apoptosisrelated protein sequences by using BLASTP, pFAM and SMART. Apoptosis-related homologous neighbor-joining phylogenetic trees were constructed using Mega 4.0, and apoptosis-related genes transcription levels in P. sojae growth, development and infection were examined by qRT-PCR and transcriptome data. The results showed that endonuclease G (PsNUC1), cytochrome c (PsCYCS), apoptosis inducing factor (PsAIF), serine protease (PsHtrA-1, PsHtrA-2 and PsHtrA-3), poly (ADP-ribose) polymerase (PsPARP-1, PsPARP-2 and PsPARP-3) and TatD nuclease (PsTatD1, PsTatD2, PsTatD3 and PsTatD4) were identified by bioinformatics methods in P. sojae. In the phylogenetic trees, PsNUC1, PsCYCS, PsAIF, PsHtrA-1, PsPARP-1, PsPARP-2, PsPARP-3, PsTatD1 and PsTatD2 in P. sojae were close to homolog proteins from Homo sapiens and Caenorhabditis elegans, rather than fungi, while PsHtrA-2, PsHtrA-3, PsTatD3 and PsTatD4 were closer to related proteins from Saccharomyces cerevisiae. These results suggested that apoptosis genes had undergone great changes in P. sojae evolution. Transcriptome data and real-time PCR analysis revealed that PsHtrA-1 and PsRARP-1 were highly expressed in P. sojae sporangia, and both PsHtrA-2 and PsRARP-2 were highly upregulated in zoospores. Four apoptosis-related genes, including PsAIF, PsHtrA-3, PsRARP-1 and PsRARP-2, showed a relatively higher expression level during infection stages, while PsCYCS was downregulated during infection stages. The apoptosis might function in P. sojae growth and pathogenicity. |
keywords:Phytophthora sojae apoptosis gene identification expression analysis |
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