植物研究 ›› 2020, Vol. 40 ›› Issue (6): 886-896.doi: 10.7525/j.issn.1673-5102.2020.06.011
        
               		赵历强1,2, 单春苗1,2, 张声祥1,2, 施圆圆1,2, 马克龙3, 吴家文2,4,5(
)
                  
        
        
        
        
    
收稿日期:2019-11-19
									
				
									
				
									
				
											出版日期:2020-11-20
									
				
											发布日期:2020-11-04
									
			通讯作者:
					吴家文
											E-mail:wujiawen@ahtcm.edu.cn
												作者简介:赵历强(1995—),男,硕士研究生,主要从事转录组学研究。
				
							基金资助:
        
               		Li-Qiang ZHAO1,2, Chun-Miao SHAN1,2, Sheng-Xiang ZHANG1,2, Yuan-Yuan SHI1,2, Ke-Long MA3, Jia-Wen WU2,4,5(
)
			  
			
			
			
                
        
    
Received:2019-11-19
									
				
									
				
									
				
											Online:2020-11-20
									
				
											Published:2020-11-04
									
			Contact:
					Jia-Wen WU   
											E-mail:wujiawen@ahtcm.edu.cn
												About author:ZHAO Li-Qiang(1995—),male,master degree candidate,mainly engaged in transcriptomics research.				
							Supported by:摘要:
为进一步理解细风轮花青素合成途径,本研究利用华大基因BGISEQ-500平台对细风轮中的根、茎、叶、花4个组织进行了转录组测序,从头组装后得到128 856个Unigene。KEGG通路表明有40个Unigene编码了细风轮的花青素生物合成途径中6个关键酶。我们对其中的关键酶DFR(二氢黄酮醇还原酶)进行同源比对和空间结构模拟,结果显示DFR序列和结构均具有良好的保守性,且具有高度保守的NAD+结合位点,其二级结构主要由α螺旋和β折叠组成,在空间上α螺旋包裹着β折叠,形成“夹心饼干”样结构。
中图分类号:
赵历强, 单春苗, 张声祥, 施圆圆, 马克龙, 吴家文. 基于转录组测序的细风轮花青素合成途径及关键酶基因分析[J]. 植物研究, 2020, 40(6): 886-896.
Li-Qiang ZHAO, Chun-Miao SHAN, Sheng-Xiang ZHANG, Yuan-Yuan SHI, Ke-Long MA, Jia-Wen WU. Identification of Key Enzyme Genes Involved in Anthocyanin Synthesis pathway in Clinopodium gracile by Transcriptome Analysis[J]. Bulletin of Botanical Research, 2020, 40(6): 886-896.
表1
参与细风轮次生代谢途径的Unigene数目
其他次生代谢产物的生物合成途径 Biosynthesis of other secondary metabolites pathway  | 通路ID Pathway ID  | 基因数目 Unigene number  | 
|---|---|---|
| 咖啡因代谢Caffeine metabolism | ko00232 | 16 | 
| 内酰胺生物合成Monobactam biosynthesis | ko00261 | 92 | 
| 苯并嗪生物合成Benzoxazinoid biosynthesis | ko00402 | 36 | 
| 吲哚生物碱生物合成Indole alkaloid biosynthesis | ko00901 | 187 | 
| 苯丙素生物合成Phenylpropanoid biosynthesis | ko00940 | 1 406 | 
| 黄酮类生物合成Flavonoid biosynthesis | ko00941 | 455 | 
| 花青素生物合成Anthocyanin biosynthesis | ko00942 | 72 | 
| 异黄酮生物合成Isoflavonoid biosynthesis | ko00943 | 89 | 
黄酮和黄酮醇生物合成 Flavone and flavonol biosynthesis  | ko00944 | 60 | 
芪类,二芳基庚烷和姜辣素生物合成 Stilbenoid, diarylheptanoid, gingerol biosynthesis  | ko00945 | 181 | 
异喹啉生物碱生物合成 Isoquinoline alkaloid biosynthesis  | ko00950 | 177 | 
丙烷、哌啶、吡啶生物碱合成 Tropane, piperidine,pyridinealkaloid biosynthesis  | ko00960 | 142 | 
| 甜菜红碱生物合成Betalain biosynthesis | ko00965 | 26 | 
| 芥子油苷生物合成Glucosinolate biosynthesis | ko00966 | 110 | 
表2
花青素合成关键酶
关键酶缩写 Abbreviation  | 名称 Key enzymes  | EC编号 EC number  | 基因数目 Unigene number  | 
|---|---|---|---|
| PAL | 苯丙氨酸氨裂解酶 phenylalanine ammonia-lyase  | 4.3.1.24 | 7 | 
| 4CL | 4-香豆素辅酶a连接酶 4-coumarate—CoA ligase  | 6.2.1.12 | 10 | 
| DFR | 双功能二氢黄酮醇4-还原酶 bifunctional dihydroflavonol 4-reductase  | 1.1.1219 | 7 | 
| CHS | 查耳酮合酶chalcone synthase | 2.3.1.74 | 5 | 
| CHI | 查耳酮异构酶chalcone isomerase | 5.5.1.6 | 4 | 
| F3H | 黄烷酮3-双加氧酶flavanone 3-dioxygenase | 1.14.11.9 | 7 | 
表3
不同物种间DFR比对结果
登录号 GenBank ID  | 功能蛋白归类 Classification of protein functional  | 物种来源 Source  | 同源性 Homology(%)  | 一致性 Identity(%)  | 
|---|---|---|---|---|
| PPS19807.1 | DFR | 海岛棉Gossypium barbadense | 52 | 69 | 
| PIN26544.1 | DFR | 哥伦比亚锦葵 Herrania umbratica | 65 | 76 | 
| XP017435247.1 | DFR | 赤豆Vigna angularis | 52 | 69 | 
| XP027115391.1 | DFR | 咖啡树Coffea arabica | 55 | 69 | 
| XP017189793.2 | DFR | 苹果Malus domestica | 54 | 70 | 
| XP017614626.1 | DFR | 木本棉Gossypium arboreum | 53 | 69 | 
| XP010053799.1 | DFR | 巨桉Eucalyptus grandis | 52 | 68 | 
| XP020411735.1 | DFR | 桃Prunus persica | 55 | 69 | 
| XP021808031.1 | DFR | 甜樱桃Prunus avium | 54 | 69 | 
| XP019419143.1 | DFR | 狭叶羽扇豆Lupinus angustifolius | 53 | 68 | 
| XP003554760.1 | DFR | 大豆Glycine max | 50 | 66 | 
| RVX09916.1 | DFR | 葡萄Vitis vinifera | 51 | 67 | 
| XP019191170.1 | DFR | 牵牛花Ipomoea nil | 53 | 67 | 
| RAL54198.1 | DFR | 菟丝子Cuscuta australis | 60 | 75 | 
| PIN26544.1 | DFR | 风铃木Handroanthus impetiginosus | 65 | 76 | 
| XP011093542.1 | DFR | 芝麻Sesamum indicum | 65 | 77 | 
| TEY70549.1 | DFR | 一串红Salvia splendens | 70 | 79 | 
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