甘蓝型油菜种子和种皮中水杨酸含量与原花色素积累的关系研究  

Correlation between salicylic acid and anthocyanins accumulation in seeds of different varieties in Brassica napus

作　　者：夏琦 郭滢 王坤美 王思忆 巨建业 彭雅雯 刘忠松[2] 夏石头[1] XIA Qi;GUO Ying;WANG Kun-Mei;WANG Si-Yi;JU Jian-Ye;PENG Ya-Wen;LIU Zhong-Song;XIA Shi-Tou(Hunan Agricultural University/Hunan Provincial Key Laboratory of Phytohormones and Growth Development,Changsha 410128,Hunan,China;College of Agronomy,Hunan Agricultural University,Changsha 410128,Hunan,China)

机构地区：[1]湖南农业大学/植物激素与生长发育湖南省重点实验室,湖南长沙410128 [2]湖南农业大学农学院,湖南长沙410128

出　　处：《作物学报》2025年第5期1189-1197,共9页Acta Agronomica Sinica

基　　金：国家自然科学基金项目“甘蓝型油菜黄籽性状遗传稳定性的调控机制研究”(U20A2029)和国家自然科学基金项目“油菜GYF1与互作因子对真菌病害抗性的调控机理研究”(31971836)资助。

摘　　要：甘蓝型黄、黑籽油菜种子颜色差异显著,原花色素是色泽差异的主要影响因素。为探究植物激素水杨酸(SA)对油菜种子颜色的调控作用,本研究通过切片观察和超高效液相色谱串联质谱法,分析了甘蓝型黑籽材料“中双11”(ZS11)与3种甘蓝型黄籽材料“黄矮早”(HAZ)、“华黄1号”(HH1)和GH06在不同发育时期的种子及种皮中花色素和SA的变化,发现黑籽品种ZS11在开花后25 d呈现明显色素积累,而黄籽材料HAZ没有色素积累层;开花后20 d, 4个油菜材料种子和种皮中原花色素A1、B2含量逐渐上升,开花后25 d时达到峰值;此后, ZS11中原花色素A1、B2含量稳定在一个较高水平,且都极显著高于3个黄籽材料HAZ、GH06和HH1。开花后15 d, SA含量逐渐上升, 20~25 d达到峰值,然后下降;开花后20 d以后, ZS11的种子和种皮中SA含量均显著高于3个黄籽材料。进一步分析发现,种子中的水杨酸含量与花色素积累之间呈正相关。在外源喷施1 mmol L–1 SA的处理下, HAZ种皮色素的积累得到了加强,褐色种子的比例极显著增加。这表明,较高水平的SA有助于甘蓝型油菜种子和种皮的花色素积累,促进黑籽的形成,而较低水平的SA则有利于黄籽的形成,从而为黄籽油菜的育种提供了新的思路。The color difference between yellow-and black-seeded Brassica napus is significant,with proanthocyanidins being one of the main factors influencing this variation.To explore the regulatory role of the plant hormone salicylic acid(SA)in rape-seed seed color,this study conducted in-depth analyses of anthocyanins and SA at different developmental stages in seeds and seed coats of B.napus varieties,including the black-seeded“Zhongshuang11”(ZS11)and the yellow-seeded“Huang’aizao”(HAZ),“Huahuang1”(HH1),and GH06.Observations of seed sections and ultra-high performance liquid chromatogra-phy-tandem mass spectrometry(UHPLC-MS/MS)were employed.The results showed that black-seeded ZS11 exhibited signifi-cant pigment accumulation at 25 days after flowering(DAF),whereas yellow-seeded HAZ lacked a pigment-accumulating layer.From 20 DAF,anthocyanins A1 and B2 in the seeds and seed coats of all four varieties gradually increased,peaking at 25 DAF.In ZS11,anthocyanin A1 and B2 levels remained stable and high after 25 DAF,and were significantly higher than those in the three yellow-seeded varieties(HAZ,GH06,and HH1)at the 0.01 significance level.SA content also gradually increased after 15 DAF,peaking between 20 and 25 DAF,and subsequently decreased.Notably,after 20 DAF,SA concentrations in the seeds and seed coats of ZS11 were significantly higher than those in the yellow-seeded varieties.Further analysis revealed a positive correlation between SA concentration and anthocyanin accumulation in B.napus.Moreover,exogenous application of SA(1 mmol L–1)sig-nificantly increased pigment accumulation in the seed coats of HAZ and resulted in a higher percentage of dark brown seeds.These findings indicate that elevated SA levels promote anthocyanin accumulation in B.napus seeds and seed coats,contributing to the formation of black seeds,while lower SA levels favor the development of yellow seed traits.This study provides new in-sights into the role of SA in seed color regulation and offers a theoretical basis for breeding y

关 键 词：甘蓝型油菜 种子颜色 水杨酸 原花色素 

分 类 号：S565.4[农业科学—作物学]