中国农业科学 ›› 2021, Vol. 54 ›› Issue (23): 5068-5082.doi: 10.3864/j.issn.0578-1752.2021.23.012

• 园艺 • 上一篇    下一篇

葡萄Fe-S簇装配基因的鉴定、克隆和表达特征分析

张璐1,2(),宗亚奇1,2,徐维华2,韩蕾1,孙浈育1,2,陈朝晖3,陈松利3,张凯1,程杰山1,唐美玲1,2,3(),张洪霞1,宋志忠1()   

  1. 1鲁东大学农林工程研究院/山东省高等学校重点实验室-作物高产抗逆分子模块育种实验室,山东烟台 264025
    2烟台农业科学研究院葡萄研究所,山东烟台 264000
    3招远市大户庄园农林专业合作社,山东烟台 264000
  • 收稿日期:2021-02-08 接受日期:2021-05-05 出版日期:2021-12-01 发布日期:2021-12-06
  • 通讯作者: 唐美玲,宋志忠
  • 作者简介:张璐,Tel:0535-6352051;E-mail: 1169464953@qq.com
  • 基金资助:
    国家现代农业产业技术体系建设专项(CARS-29-16);山东省农业良种工程基金(2019LZGC009-2);烟台市科技计划(2018XSCC043);烟台市科技计划(2018XSCC043);国家重点研发计划(2019YFD1000500);烟台市葡萄与葡萄酒局专项资金(50012305073)

Identification, Cloning, and Expression Characteristics Analysis of Fe-S Cluster Assembly Genes in Grape

ZHANG Lu1,2(),ZONG YaQi1,2,XU WeiHua2,HAN Lei1,SUN ZhenYu1,2,CHEN ZhaoHui3,CHEN SongLi3,ZHANG Kai1,CHENG JieShan1,TANG MeiLing1,2,3(),ZHANG HongXia1,SONG ZhiZhong1()   

  1. 1The Engineering Research Institute of Agriculture and Forestry, Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of Shandong, Yantai 264025, Shandong
    2Institute of Grape, Yantai Academy of Agricultural Science, Yantai 264000, Shandong
    3Zhaoyuan Dahu Manor Agriculture and Forestry Professional Cooperative, Yantai 264000, Shandong
  • Received:2021-02-08 Accepted:2021-05-05 Online:2021-12-01 Published:2021-12-06
  • Contact: MeiLing TANG,ZhiZhong SONG

摘要:

【目的】从葡萄中克隆并鉴定Fe-S簇装配基因,在转录水平探索其组织特异性表达特征及其对缺铁胁迫的差异响应,明确主效基因。【方法】通过同源克隆法,在葡萄基因组中筛选并鉴定参与Fe-S簇装配的基因;借助生物信息学软件分析葡萄Fe-S簇装配相关基因及其编码蛋白的详细特征;利用实时荧光定量PCR分析Fe-S簇装配相关基因在葡萄不同组织部位的表达模式及其对缺铁胁迫的响应情况;利用MEGE 7.0软件建立不同植物ISU1同源蛋白的系统进化树。【结果】在葡萄基因组中检索并克隆获得46个Fe-S簇装配基因,分布于16条染色体上,含有1—21个长度不一的内含子,且主要分布于质体、线粒体和细胞质,分别含有14、21和11个基因成员;葡萄Fe-S簇装配蛋白在多种亚细胞结构中均有定位,且不同装配机制中蛋白的亚细胞定位情况差异很大;所选10种植物ISU1蛋白序列的一致性高达77%,系统发育树分析表明同一属的ISU1同源蛋白如十字花科的拟南芥和盐芥、禾本科的水稻和短柄草、蔷薇科的桃和苹果,倾向于紧密聚在一起,但葡萄ISU1和番茄ISU1紧密聚集在一起;葡萄Fe-S簇装配基因在3年生‘马瑟兰’成年树体和组培幼苗不同组织中的表达水平差异较大,其中,ISU1整体水平的表达量最为丰富(尤其是成熟期果实中的表达量最高),其次是HSCA1ISA2NFU2、SUFASUFB等基因,而SUFE2NFS1、HSCA2HSCA6TAH18CIA2在本研究所有葡萄组织中均未检测到表达量;在‘马瑟兰’幼苗中,葡萄Fe-S簇装配基因对缺铁处理较为敏感,所有基因至少在1个检测的组织部位对缺铁处理有响应,其中,22个基因的表达水平在所有检测组织中均受缺铁处理调控:根部Fe-S簇装配基因的表达水平易受缺铁胁迫诱导而上调,但地上部(茎和叶)Fe-S簇装配基因的表达水平易受缺铁胁迫抑制而下调。【结论】从葡萄中克隆并鉴定了46个Fe-S簇装配基因,分别定位于质体、线粒体和细胞质;葡萄Fe-S簇装配基因在三年生成年树体和组培幼苗不同组织中的表达水平差异较大,且在葡萄幼苗不同组织中的转录水平对缺铁胁迫的响应具有显著差异;ISU1在葡萄所有组织中的整体表达量较高;葡萄ISU1和番茄ISU1同源蛋白遗传进化距离最接近。

关键词: 葡萄, 铁代谢, 缺铁, Fe-S簇, 装配机制, 基因克隆及表达

Abstract:

【Objective】The aim of this study was to isolate and characterize grape Fe-S cluster assembly genes. The tissue-specific expression characteristics and differential response to iron depletion at the transcriptional level were analyzed to screen the dominant and candidate Fe-S cluster assembly genes in grape. 【Method】The Fe-S cluster assembly genes were screened and identified in grape genome by homologous cloning. The detailed characteristics of Fe-S cluster assembly genes and their encoded proteins in grape were analyzed by using a variety of bioinformatics software. The expression patterns of Fe-S cluster assembly genes in different tissues of grape and their corresponding responses to iron deficiency stress were analyzed by using real-time fluorescent quantitative PCR. The phylogenetic trees of ISU1 homologous proteins from different plants were established by using MEGE 7.0 software. 【Result】 In total, 46 Fe-S cluster assembly genes were retrieved and cloned from grape, which were located on a total of 16 chromosomes, containing 1-21 introns with different lengths. Grape Fe-S cluster assembly genes were mainly distributed in plastid, mitochondrion and cytosol, containing 14, 21 and 11 genes, respectively. Grape Fe-S cluster assembly proteins were found with a variety of subcellular structures. Moreover, the subcellular localization of Fe-S cluster assembly proteins with different assembly mechanisms was quite distinct. The sequence identity of ISU1 homologous proteins from 10 plant species was as high as 77%. Phylogenetic tree analysis indicated that ISU1 members belonging to the same genus, such as Arabidopsis and the llungiella of Cruciferae, rice and Brachypodium of Gramineae, and peach and apple of Rosaceae, were tended to be closely clustered together, while grape ISU1 was closely clustered with tomato ISU1. The expression levels of Fe-S cluster assembly genes were different among different tissues of 3-year-old adult tree and tissue culture seedling of Marselan grape, and the differences were significant. In particular, the expression level of ISU1 gene was the most abundant (especially in the mature fruit), followed by HSAC1, ISA2, NFU2, SUFA and SUFB, while the expression levels of SUFE2, NFS1, HSCA2, HSCA6, TAH18 and CIA2 were not detected in tested tissues of grape. Grape Fe-S cluster assembly genes were more sensitive to iron deficiency treatment, and all genes responded to iron deficiency treatment in at least one detected tissue sample. Notably, the expression level of 22 Fe-S cluster assembly genes were significantly regulated by iron deficiency in all tested tissues, and the expression levels in roots were likely to be up-regulated by iron deficiency, while the expression levels in shoots (stems and leaves) were prone to be down-regulated. 【Conclusion】46 Fe-S cluster assembly genes were cloned and identified in grape, which were located in plastid, mitochondrion and cytosol, respectively. The expression levels of Fe-S cluster assembly genes were significantly distinct among different tissues of 3-year-old adult tree and tissue culture seedlings, while the transcription levels in different seedlings tissues were significantly different in response to iron deficiency. The overall expression level of ISU1 gene was the highest in all tested tissues of grape. The genetic evolution distance between grape and tomato ISU1 homologous proteins was the closest.

Key words: grape, iron metabolism, iron depletion, Fe-S cluster, assembly mechanism, gene cloning and expression