Cross-species complementation reveals conserved functions for EARLY FLOWERING 3 between monocots and dicots

被引:19
作者
Huang, He [1 ]
Gehan, Malia A. [1 ]
Huss, Sarah E. [2 ]
Alvarez, Sophie [1 ,4 ]
Lizarraga, Cesar [1 ]
Gruebbling, Ellen L. [3 ]
Gierer, John [1 ]
Naldrett, Michael J. [1 ,4 ]
Bindbeutel, Rebecca K. [1 ]
Evans, Bradley S. [1 ]
Mockler, Todd C. [1 ]
Nusinow, Dmitri A. [1 ]
机构
[1] Donald Danforth Plant Sci Ctr, St Louis, MO 63132 USA
[2] Webster Univ, Webster Groves, MO USA
[3] St Louis Univ, St Louis, MO 63103 USA
[4] Univ Nebraska, Lincoln, NE USA
基金
美国国家科学基金会;
关键词
circadian clock; circadian RNA-seq; ELF3; flowering; growth; Setaria; TANDEM AFFINITY PURIFICATION; CIRCADIAN CLOCK GENES; EVENING COMPLEX; STATISTICAL-MODEL; NATURAL VARIATION; ARABIDOPSIS; PROTEIN; RHYTHMS; ENCODES; GROWTH;
D O I
10.1002/pld3.18
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Plant responses to the environment are shaped by external stimuli and internal signaling pathways. In both the model plant Arabidopsis thaliana (Arabidopsis) and crop species, circadian clock factors are critical for growth, flowering, and circadian rhythms. Outside of Arabidopsis, however, little is known about the molecular function of clock gene products. Therefore, we sought to compare the function of Brachypodium distachyon (Brachypodium) and Setaria viridis (Setaria) orthologs of EARLY FLOWERING 3, a key clock gene in Arabidopsis. To identify both cycling genes and putative ELF3 functional orthologs in Setaria, a circadian RNA-seq dataset and online query tool (Diel Explorer) were generated to explore expression profiles of Setaria genes under circadian conditions. The function of ELF3 orthologs from Arabidopsis, Brachypodium, and Setaria was tested for complementation of an elf3 mutation in Arabidopsis. We find that both monocot orthologs were capable of rescuing hypocotyl elongation, flowering time, and arrhythmic clock phenotypes. Using affinity purification and mass spectrometry, our data indicate that BdELF3 and SvELF3 could be integrated into similar complexes in vivo as AtELF3. Thus, we find that, despite 180 million years of separation, BdELF3 and SvELF3 can functionally complement loss of ELF3 at the molecular and physiological level.
引用
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页数:14
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