Transcriptomic Profiling of Shoot Apical Meristem Aberrations in the Multi-Main-Stem Mutant (ms) of Brassica napus L.
文献类型： 外文期刊
作者： Wang, Qian 1 ; Xue, Na 2 ; Sun, Chao 4 ; Tao, Jing 2 ; Mi, Chao 1 ; Yuan, Yi 2 ; Pan, Xiangwei 1 ; Gui, Min 2 ; Long, Ronghua 2 ; Ding, Renzhan 2 ; Li, Shikai 2 ; Lin, Liangbin 1 ;
作者机构： 1.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming 650201, Peoples R China
2.Yunnan Acad Agr Sci, Hort Res Inst, Kunming 650200, Peoples R China
3.Yunnan Acad Agr Sci, Hort Res Inst, Engn Res Ctr Vegetable Germplasm Innovat & Support, 2238 Beijing Rd, Kunming 650205, Peoples R China
4.Yunnan Acad Agr Sci, Tea Res Inst, Kunming 650221, Peoples R China
关键词： Brassica napus L; shoot apical meristem (SAM); shoot branching; transcriptome; cytokinin
期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN：
年卷期： 2023 年 14 卷 7 期
页码：
收录情况： SCI
摘要： Rapeseed (Brassica napus L.) is a globally important oilseed crop with various uses, including the consumption of its succulent stems as a seasonal vegetable, but its uniaxial branching habit limits the stem yield. Therefore, developing a multi-stem rapeseed variety has become increasingly crucial. In this study, a natural mutant of the wild type (ZY511, Zhongyou511) with stable inheritance of the multi-stem trait (ms) was obtained, and it showed abnormal shoot apical meristem (SAM) development and an increased main stem number compared to the WT. Histological and scanning electron microscopy analyses revealed multiple SAMs in the ms mutant, whereas only a single SAM was found in the WT. Transcriptome analyses showed significant alterations in the expression of genes involved in cytokinin (CK) biosynthesis and metabolism pathways in the ms mutant. These findings provide insight into the mechanism of multi-main-stem formation in Brassica napus L. and lay a theoretical foundation for breeding multi-main-stem rapeseed vegetable varieties.
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