Knowledge Management System of Kunming Institute of Botany,CAS
| Gibberellin inhibition of taproot formation by modulation of DELLA-NAC complex activity in turnip (Brassica rapa var. rapa) | |
Liu,Yuanyuan; Wen,Jing; Ke,Xiaochun; Zhang,Jie; Sun,Xudong; Wang,Chuntao; Yang,Yongping
| |
| 2021 | |
| 发表期刊 | PROTOPLASMA
 |
| ISSN | 0033-183X |
| 卷号 | 258期号:5页码:925-934 |
| 摘要 | Turnip is a member of the Brassica rapa species and is characterized by a swollen taproot that develops from the hypocotyl and part of the root. Gibberellins (GAs) are plant growth regulators involved in promoting cell elongation and play important roles in many aspects of plant growth and development. Interestingly, exogenous application of GA(3) was found to significantly inhibit taproot formation in turnip. Moreover, endogenous GA contents decreased during the early developmental stages of taproot formation, suggesting that GA plays a negative role in taproot formation. We examined the anatomical structure of the taproot and found that lignification of the xylem cell wall was enhanced after treatment with GA(3). Yeast two-hybrid assays suggested the occurrence of protein interactions between DELLAs and NACs in turnip. We also found that the expression of NAC-targeted genes involved in lignification of the secondary cell wall was significantly upregulated upon GA(3) treatment. Taken together, these results supported the hypothesis that GA induced DELLA proteins degradation to release NAC proteins and induced xylem lignification, therefore inhibiting taproot formation, providing new insight into the molecular mechanism underlying turnip taproot formation. |
| 关键词 | Turnip Gibberellin Taproot formation Xylem lignification |
| DOI | 10.1007/s00709-021-01609-1 |
| WOS记录号 | WOS:000631802100001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/73265 |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Yuxi Normal Univ, Yuxi 653100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu,Yuanyuan,Wen,Jing,Ke,Xiaochun,et al. Gibberellin inhibition of taproot formation by modulation of DELLA-NAC complex activity in turnip (Brassica rapa var. rapa)[J]. PROTOPLASMA,2021,258(5):925-934. |
| APA | Liu,Yuanyuan.,Wen,Jing.,Ke,Xiaochun.,Zhang,Jie.,Sun,Xudong.,...&Yang,Yongping.(2021).Gibberellin inhibition of taproot formation by modulation of DELLA-NAC complex activity in turnip (Brassica rapa var. rapa).PROTOPLASMA,258(5),925-934. |
| MLA | Liu,Yuanyuan,et al."Gibberellin inhibition of taproot formation by modulation of DELLA-NAC complex activity in turnip (Brassica rapa var. rapa)".PROTOPLASMA 258.5(2021):925-934. |
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| 82.Gibberellin inhib（1607KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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