Analysis of clock gene homologs using unifoliolates as target organs in soybean (Glycine max)

Liu, Hua; Wang, Honggui; Gao, Pengfei; Xü, Jiaohui; Xu, Tongda; Wang, Jingshan; Wang, Baoli; Lin, Chentao; Fu, Yong-Fu

doi:10.1016/j.jplph.2008.06.003

Cited by 53 publications

(49 citation statements)

References 19 publications

(56 reference statements)

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“…6; Supplemental Figs. S9 and S10; Supplemental Tables S1 and S2; Miwa et al, 2006;Liu et al, 2009;Okada et al, 2009;Takata et al, 2009). Structurally, the LHY/CCA1-like genes are typified by the presence of nine highly conserved domains (C1-C9) in higher plants.…”

Section: Ck2 Phosphorylation Sites In Oslhy Are Evolutionarily Consermentioning

confidence: 99%

The Role of Casein Kinase II in Flowering Time Regulation Has Diversified during Evolution

et al. 2009

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Casein kinase II (CK2) is a protein kinase with an evolutionarily conserved function as a circadian clock component in several organisms, including the long-day plant Arabidopsis (Arabidopsis thaliana). The circadian clock component CIRCADIAN CLOCK ASSOCIATED1 (CCA1) is a CK2 target in Arabidopsis, where it influences photoperiodic flowering. In rice (Oryza sativa), a shortday plant, Heading date6 (Hd6) encodes a CK2a subunit that delays flowering time under long-day conditions. Here, we demonstrate that control of flowering time in rice by the Hd6 CK2a subunit requires a functional Hd1 gene (an Arabidopsis CONSTANS ortholog) and is independent of the circadian clock mechanism. Our findings from overexpressing the dominantnegative CK2 allele in rice support the independence of CK2 function from the circadian clock. This lack of control of the circadian clock by Hd6 CK2a might be due to the presence of glutamate in OsLHY (a CCA1 ortholog in rice) instead of the serine at the corresponding CK2 target site in CCA1. However, this glutamate is critical for the control of the OsPRR1 gene (a rice ortholog of the Arabidopsis TOC1/PRR1 gene) by OsLHY for regulation of the circadian clock. We also demonstrated that the other conserved CK2 target sites in OsLHY conferred robust rhythmic expression of OsLHY-LUC under diurnal conditions. These findings imply that the role of CK2 in flowering-time regulation in higher plants has diversified during evolution.

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Section: Ck2 Phosphorylation Sites In Oslhy Are Evolutionarily Consermentioning

confidence: 99%

The Role of Casein Kinase II in Flowering Time Regulation Has Diversified during Evolution

et al. 2009

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“…This network consists of a core oscillator module of three TFs (CIRCADIAN CLOCK ASSOCIATED1 (CCA1), LATE HYPOCOTYL (LHY) and TIMING OF CAB1 (TOC1)) that forms the base of a larger interconnected network regulating circadian rhythms, hypocotyl growth, and flowering of Arabidopsis plants through transcriptional but also post‐translational regulation, chromatin remodeling, and alternative splicing (Nakamichi, 2011; Malapeira et al , 2012; Perez‐Santángelo et al , 2013; Wang & Ma, 2013). The core circadian clock network in Arabidopsis has even been extrapolated to crops such as rice, maize, soybean, and Brassica rapa (Murakami et al , 2007; Liu et al , 2009; Xu et al , 2010; Wang et al , 2011). A more specific example of a smaller GRN is the BRASSINAZOLE RESISTANT(BZR)—PHYTOCHROME INTERACTING FACTOR 4 (PIF4)—DELLA module that integrates brassinosteroid, light, and gibberellin signals to regulate cell elongation (Bai et al , 2012; Claeys et al , 2014a; Zhiponova et al , 2014).…”

Section: Introductionmentioning

confidence: 99%

From network to phenotype: the dynamic wiring of an Arabidopsis transcriptional network induced by osmotic stress

Broeck

Dubois

Vermeersch

et al. 2017

Molecular Systems Biology

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Plants have established different mechanisms to cope with environmental fluctuations and accordingly fine‐tune their growth and development through the regulation of complex molecular networks. It is largely unknown how the network architectures change and what the key regulators in stress responses and plant growth are. Here, we investigated a complex, highly interconnected network of 20 Arabidopsis transcription factors (TFs) at the basis of leaf growth inhibition upon mild osmotic stress. We tracked the dynamic behavior of the stress‐responsive TFs over time, showing the rapid induction following stress treatment, specifically in growing leaves. The connections between the TFs were uncovered using inducible overexpression lines and were validated with transient expression assays. This study resulted in the identification of a core network, composed of ERF6, ERF8, ERF9, ERF59, and ERF98, which is responsible for most transcriptional connections. The analyses highlight the biological function of this core network in environmental adaptation and its redundancy. Finally, a phenotypic analysis of loss‐of‐function and gain‐of‐function lines of the transcription factors established multiple connections between the stress‐responsive network and leaf growth.

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“…This wide adaptability is most likely associated with the genetic diversity of the plant (Liu et al, 2008(Liu et al, , 2009 cultivars. These mutations may represent an important source of genes for the development of soybean cultivars adapted to different low-latitude regions or sowing periods in breeding programs (Thakare et al, 2010;Watanabe et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…The genetic control of flowering time under short-day conditions is determined by a genetic system that is different and independent from the one that determines flowering under long-day conditions. Late flowering under short-day conditions is controlled by recessive alleles, whereas, under long-day conditions, it is dominant over early flowering (Liu et al, 2009;Watanabe et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Inheritance of late flowering in natural variants of soybean cultivars under short-day conditions

Carpentieri-Pípolo

Almeida

Kiihl

et al. 2014

Pesq. agropec. bras.

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-The objective of this work was to determine the inheritance of the long juvenile period trait in natural variants of the Doko, BR 9 (Savana), Davis, Embrapa 1 (IAS 5RC), and BR 16 soybean cultivars. Complete diallel crosses were made between the Doko and BR 16 cultivars and their variants. A 3:1 segregation ratio was observed in the F 2 populations of the 'Doko' x Doko-18T, 'Doko' x Doko-Milionária, 'Davis' x São Carlos, and 'BR 9 (Savana)' x MABR92-836 (Savanão) crosses, indicating that the long juvenile period trait is controlled by a pair of recessive genes. The difference in late flowering between the Doko cultivar and both of its variants was caused by a recessive spontaneous mutation at the same genetic locus. However, the variants Doko-18T and Doko-Milionária are identical mutants that share a pair of genes that control the long juvenile period under short-day conditions. These mutants can be used in breeding programs to develop cultivars adapted to low-latitude tropical regions.Index terms: Glycine max, breeding program, long juvenile period, low-latitude regions, natural mutation, photoperiod. Herança do florescimento tardio em variantes naturais de cultivares de soja em condições de dias curtosResumo -O objetivo deste trabalho foi determinar a herança do caráter período juvenil longo em variantes naturais das cultivares de soja Doko, BR 9 (Savana), Davis, Embrapa 1 (IAS 5RC) e BR 16. Foram realizados cruzamentos em dialelo completo entre as cultivares Doko e BR 16 e as suas variantes. Foi observada segregação 3:1 nas populações F 2 dos cruzamentos 'Doko' x Doko-18T, 'Doko' x Doko-Milionária, 'Davis' x São Carlos e 'BR 9 (Savana)' x MABR92-836 (Savanão), o que indica que o caráter período juvenil longo é controlado por um par de genes recessivos. A diferença de florescimento tardio entre a cultivar Doko e ambas as suas variantes foi causada por uma mutação espontânea recessiva no mesmo loco genético. Entretanto, as variantes Doko-18T e Doko-Milionária são mutantes idênticos que compartilham um par de genes que controlam o período juvenil longo em condições de dia curto. Esses mutantes podem ser usados em programas de melhoramento para desenvolver cultivares adaptadas a regiões tropicais de baixa latitude.Termos para indexação: Glycine max, programa de melhoramento, período juvenil longo, regiões de baixa latitude, mutação natural, fotoperíodo.

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Analysis of clock gene homologs using unifoliolates as target organs in soybean (Glycine max)

Cited by 53 publications

References 19 publications

The Role of Casein Kinase II in Flowering Time Regulation Has Diversified during Evolution

The Role of Casein Kinase II in Flowering Time Regulation Has Diversified during Evolution

From network to phenotype: the dynamic wiring of an Arabidopsis transcriptional network induced by osmotic stress

Inheritance of late flowering in natural variants of soybean cultivars under short-day conditions

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