| Nitrate attenuates abscisic acid signaling via NIN-LIKE PROTEIN8 in Arabidopsis seed germination | |
Huang, Zhichong1; Han, Xiao1; He, Kunrong1,2; Ye, Jingwen1; Yu, Chunlan1; Xu, Tingting1; Zhang, Juping1; Du, Jiancan1; Fu, Qiantang1; Hu, Yanru1,3,4,5
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| 2025 | |
| Source Publication | PLANT CELL
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| ISSN | 1040-4651 |
| Volume | 37Issue:3Pages:- |
| Abstract | Abscisic acid (ABA) suppresses Arabidopsis (Arabidopsis thaliana) seed germination and post-germinative growth. Nitrate stimulates seed germination, but whether it directly regulates ABA signaling and the associated underlying molecular mechanisms remain unknown. Here, we showed that nitrate alleviates the repressive effects of ABA on seed germination independently of the nitric oxide (NO) pathway. Moreover, nitrate attenuates ABA signaling activated by ABSCISIC ACID INSENSITIVE3 (ABI3) and ABI5, two critical transcriptional regulators of the ABA pathway. Mechanistic analyses demonstrated that ABI3 and ABI5 physically interact with the nitrate signaling-related core transcription factor NIN-LIKE PROTEIN 8 (NLP8). After ABA treatment, NLP8 suppresses ABA responses during seed germination without affecting ABA content. Notably, nitrate represses ABA signaling mainly through NLP8. Genetic analyses showed that NLP8 acts upstream of ABI3 and ABI5. Specifically, NLP8 inhibits the transcriptional functions of ABI3 and ABI5, as well as their ABA-induced accumulation. Additionally, NLP8 overexpression largely suppresses the ABA hypersensitivity of mutant plants exhibiting impaired NO biosynthesis or signaling. Collectively, our study reveals that nitrate counteracts the inhibitory effects of ABA signaling on seed germination and provides mechanistic insights into the NLP8-ABI3/ABI5 interactions and their antagonistic relationships in ABA signaling. The transcription factor NIN-LIKE PROTEIN8 physically interacts with and antagonizes the transcription factors ABSCISIC ACID INSENSITIVE3 (ABI3) and ABI5 to attenuate abscisic acid signaling during seed germination. |
| Keyword | ABA RESPONSE LOCI TRANSCRIPTION FACTOR DORMANCY RELEASE GENE-EXPRESSION NEGATIVE REGULATOR CIRCADIAN CLOCK STRESS-RESPONSE FLOWERING TIME DELLA PROTEINS ROOT-GROWTH |
| Subject Area | Biochemistry & Molecular Biology ; Plant Sciences ; Cell Biology |
| DOI | 10.1093/plcell/koaf046 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001482346500001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/14719 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Univ Sci & Technol China, Sch Life Sci, Div Life Sci & Med, Hefei 230027, Anhui, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China 3.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, State Key Lab Tree Genet & Breeding, Nanjing 210037, Peoples R China 4.Hunan Univ, Coll Biol, State Key Lab Chemo & Biosensing, Changsha 410082, Peoples R China 5.Hunan Univ, Coll Biol, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Peoples R China 6.Yuelushan Lab, Changsha 410128, Peoples R China |
| Recommended Citation GB/T 7714 | Huang, Zhichong,Han, Xiao,He, Kunrong,et al. Nitrate attenuates abscisic acid signaling via NIN-LIKE PROTEIN8 in Arabidopsis seed germination[J]. PLANT CELL,2025,37(3):-. |
| APA | Huang, Zhichong.,Han, Xiao.,He, Kunrong.,Ye, Jingwen.,Yu, Chunlan.,...&Hu, Yanru.(2025).Nitrate attenuates abscisic acid signaling via NIN-LIKE PROTEIN8 in Arabidopsis seed germination.PLANT CELL,37(3),-. |
| MLA | Huang, Zhichong,et al."Nitrate attenuates abscisic acid signaling via NIN-LIKE PROTEIN8 in Arabidopsis seed germination".PLANT CELL 37.3(2025):-. |
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