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CIPK23 is involved in iron acquisition of Arabidopsis by affecting ferric chelate reductase activity
Tian, Qiuying; Zhang, Xinxin1; Yang, An; Wang, Tianzuo; Zhang, Wen-Hao
2016
Source PublicationPLANT SCIENCE
ISSN0168-9452
Volume246Pages:70-79
AbstractIron deficiency is one of the major limiting factors affecting quality and production of crops in calcareous soils. Numerous signaling molecules and transcription factors have been demonstrated to play a regulatory role in adaptation of plants to iron deficiency. However, the mechanisms underlying the iron deficiency-induced physiological processes remain to be fully dissected. Here, we demonstrated that the protein kinase CIPK23 was involved in iron acquisition. Lesion of CIPK23 rendered Arabidopsis mutants hypersensitive to iron deficiency, as evidenced by stronger chlorosis in young leaves and lower iron concentration than wild-type plants under iron-deficient conditions by down-regulating ferric chelate reductase activity. We found that iron deficiency evoked an increase in cytosolic Ca2+ concentration and the elevated Ca2+ would bind to CBL1/CBL9, leading to activation of CIPK23. These novel findings highlight the involvement of calcium-dependent CBL-CIPK23 complexes in the regulation of iron acquisition. Moreover, mutation of CIPK23 led to changes in contents of mineral elements, suggesting that CBL-CIPK23 complexes could be as nutritional sensors to sense and regulate the mineral homeostasis in Arabisopsis. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
KeywordArabidopsis Iron acquisition Ferric chelate reductase CIPK Cytosolic Ca2+ concentration
Subject AreaBiochemistry & Molecular Biology ; Plant Sciences
DOI10.1016/j.plantsci.2016.01.010
Indexed BySCI
Language英语
WOS KeywordB-LIKE PROTEINS ; CALCIUM SENSORS ; METAL TRANSPORTER ; ABSCISIC-ACID ; NITRIC-OXIDE ; GENE-EXPRESSION ; H+-ATPASE ; DEFICIENCY ; ROOT ; KINASE
WOS Research AreaScience Citation Index Expanded (SCI-EXPANDED)
WOS IDWOS:000373545500007
PublisherELSEVIER IRELAND LTD
SubtypeArticle
Publication PlaceCLARE
Funding OrganizationChinese Academy of SciencesChinese Academy of Sciences [KSCX2-EW-Q-20] ; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31071844]
Corresponding Author Emailwhzhang@ibcas.ac.cn
OABronze
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/25189
Collection植被与环境变化国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Munster, Inst Biol & Biotechnol Pflanzen, Schlossplatz 4, D-48149 Munster, Germany
Recommended Citation
GB/T 7714
Tian, Qiuying,Zhang, Xinxin,Yang, An,et al. CIPK23 is involved in iron acquisition of Arabidopsis by affecting ferric chelate reductase activity[J]. PLANT SCIENCE,2016,246:70-79.
APA Tian, Qiuying,Zhang, Xinxin,Yang, An,Wang, Tianzuo,&Zhang, Wen-Hao.(2016).CIPK23 is involved in iron acquisition of Arabidopsis by affecting ferric chelate reductase activity.PLANT SCIENCE,246,70-79.
MLA Tian, Qiuying,et al."CIPK23 is involved in iron acquisition of Arabidopsis by affecting ferric chelate reductase activity".PLANT SCIENCE 246(2016):70-79.
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