胡椒不同时期体细胞胚中内源激素变化
2021-06-15吉训志胡丽松秦晓威杨艺秋范睿郝朝运
吉训志 胡丽松 秦晓威 杨艺秋 范睿 郝朝运



摘 要:為研究胡椒不同时期体细胞胚中内源激素变化,以‘热引1号胡椒外种皮经培养获得的非胚性愈伤组织(Y)、胚性愈伤组织(P)、胚性愈伤组织与体细胞胚混合物(H)、体细胞胚(T)与体细胞胚增殖(Z)5个时期样品为试验材料,采用LC-MS/MS技术检测不同时期胚性培养物的内源激素种类与含量,以期找出内源激素影响胡椒体细胞胚发生的关键因素。结果表明:在胡椒体细胞胚发生过程中,吲哚-3-乙酸(IAA)含量在H时期最高,在P时期最低,在H、T与Z时期逐渐降低。吲哚-3-丁酸(IBA)含量在Y时期最高,在P时期最低,在H、T与Z时期基本不变。吲哚-3-甲酸(ICA)含量在H时期最高,且只存在含有愈伤组织的Y、P与H时期。异戊烯腺嘌呤(IP)含量在H时期最高,在P时期最低,在T与Z时期接近于零。顺式玉米素(cZ)含量在Y时期最高,其他时期都接近于零。茉莉酸甲酯(ME-JA)含量只存在Y时期和P时期,但Y时期含量高于P时期。茉莉酸(JA)含量在Z时期最高,在P时期最低,在H、T与Z时期逐渐升高。水杨酸(SA)含量在H时期最高,在Y时期最低,且H、T与Z时期先降后升。脱落酸(ABA)含量在H时期最高,在P时期最低,在T与Z时期基本不变。赤霉素类(GAS)主要存在于Y与P时期,H、T与Z时期含量很低。由此可见,IAA、SA与ABA可能与体细胞胚发生的相关性强,而cZ、MEJA与GAS可能与愈伤组织产生相关性强。
关键词:胡椒;愈伤组织;体细胞胚;内源激素
中图分类号:S667.1 文献标识码:A
Changes of Endogenous Hormone During Different Stages of Somatic Embryogenesis of Piper nigrum
JI Xunzhi1,2,3,4, HU Lisong1,2,3,4, QIN Xiaowei1,2,3,4, YANG Yiqiu1,5, FAN Rui1,2,3,4, HAO Chaoyun1,2,3,4*
1. Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, Hainan 571533, China; 2. Key Laboratory of Genetic Resources Utilization of Spice and Beverage Crops, Ministry of Agriculture and Rural Affairs, Wanning, Hainan 571533, China; 3. Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Wanning, Hainan 571533, China; 4. Hainan Sim Soonliang academician workstation, Wanning, Hainan 571533, China; 5. College of Tropical Crop, Yunnan Agricultural University, Puer, Yunnan 665000, China
Abstract: In order to investigate the changes of endogenous hormones during different stages of somatic embryogenesis of P. nigrum, the endogenous hormones in five different development processes were detected at non-embryonic callus stage (Y), embryonic callus stage (P), mixed stage of embryonic callus and somatic embryo (H), somatic embryo stage (T) and stage of somatic embryo proliferation (Z) by the LC-MS/MS technique. The content of indole-3-acetic acid (IAA) decreased gradually in the period of H, T and Z during the process of pepper somatic embryogenesis. The content of indole-3-butyric acid (IBA) was the highest in the period of Y and the lowest in the period of P, and the content of IBA was basically unchanged in the period of H, T and Z. Indole-3- Formic acid (ICA) content was the highest in the period of H, and ICA only existed at callus stage. Isopentenyladenine (IP) content was the highest at H, and was the lowest at P and close to zero at T and Z. Zeatin (cZ) content was the highest at Y, and cZ content was close to zero at other stages. Methyl jasmonate (ME-JA) only existed at Y and P, and former content was higher than latter content. Jasmonic acid (JA) content was the highest at Z, JA content was the lowest at P and increased gradually at other stages. Salicylic acid (SA) content was the highest at H, and was the lowest at Y and increased after decreased at other stages. Abscisic acid (ABA) content was the highest at H, and was the lowest at P and unchanged basically at T and Z. Gibberellins (GAS) mainly existed at Y and P, the levels were low at H, T, and Z. Therefore, IAA, SA and ABA may be strongly correlated with somatic embryogenesis, while cZ, ME-JA and GAS may be strongly correlatws with callus production.
Keywords: Piper nigrum L.; callus; somatic embryogenesis; endogenous hormones
DOI: 10.3969/j.issn.1000-2561.2021.04.013
胡椒(Piper nigrum L.)为多年生热带攀援藤本植物,果实具有辛辣香气,是世界最重要的香辛料作物,也是人们喜爱的调味品[1-2]。……
