Sugar beet contains a large CONSTANS-LIKE gene family including a CO homologue that is independent of the early-bolting (B) gene locus

Chia, Tansy; Müller, Andreas E.; Jung, Christian; Mutasa-Gottgens, Euphemia

doi:10.1093/jxb/ern129

Cited by 118 publications

(103 citation statements)

References 66 publications

(105 reference statements)

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“…In both monocots and dicots the COL (CONSTANS-Like) family has many members such as 17 in Arabidopsis, 16 in rice, 9 in barley (Griffiths et al 2003), 10 in sugarbeet (Chia et al 2008), 11 in Medicago (Wong et al 2014), 26 in soybean (Wu et al 2014) and 23 in cotton (Zhang et al 2015). All of these COL genes are characterized by the presence of three domains namely the B-box 1, B-box 2 and a CCT (CO, COlike, and TOC1) domain (Griffiths et al 2003;Putterill et al 1995;Strayer et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Group II contains B-box1, a less conserved or diverged B-box2 and CCT domain but lacks the VP motif while Group III contains B-box 1 and CCT domain only (Gangappa and Botto 2014;Zhang et al 2015). In a broader way COL proteins are a part of the BBX family transcription factors with diverse functions (Almada et al 2009;Chia et al 2008;Crocco and Botto 2013;Datta et al 2006;Huang et al 2012;Valverde 2011). The characterization and analysis of Group I CO genes has been carried out in many plant species and these cluster with Arabidopsis CO and rice Hd1 (Gangappa and Botto 2014;Griffiths et al 2003;Huang et al 2012;Zhang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Molecular characterization of CONSTANS-Like (COL) genes in banana (Musa acuminata L. AAA Group, cv. Grand Nain)

Chaurasia

Patil²,

Azeez³

et al. 2016

Physiol Mol Biol Plants

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The CONSTANS (CO) family is an important regulator of flowering in photoperiod sensitive plants. But information regarding their role in day neutral plants is limited. We report identification of nine Group I type CONSTANS-like (COL) genes of banana and their characterization for their age dependent, diurnal and tissue-specific expression. Our studies show that the Group I genes are conserved in structure to members in other plants. Expression of these genes shows a distinct circadian regulation with a peak during light period. Developmental stage specific expression reveals high level transcript accumulation of two genes, MaCOL3a and MaCOL3b, well before flowering and until the initiation of flowering. A decrease in their transcript levels after initiation of flowering is followed by an increase in transcription of other members that coincides with the continued development of the inflorescence and fruiting. CO binding cis-elements are observed in at least three FT-like genes in banana suggesting possible CO-FT interactions that might regulate flowering. Distinct tissue specific expression patterns are observed for different family members in mature leaves, apical inflorescence, bracts, fruit skin and fruit pulp suggesting possible roles other than flowering. This is the first exhaustive study of the COL genes belonging to Group I of banana.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular characterization of CONSTANS-Like (COL) genes in banana (Musa acuminata L. AAA Group, cv. Grand Nain)

Chaurasia

Patil²,

Azeez³

et al. 2016

Physiol Mol Biol Plants

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“…Ideally, overexpression of PpCOL-1 with 35S::CO will be able to restore the late flowering phenotype of co-1 or co-2, which can suggest that PpCOL-1 has the same function as CO in arabidopsis. Similar studies have been conducted to CO and CO-like isolated in other plants species such as poplar (CO1 and CO2) (Hsu et al, 2012) and sugarbeet (BvCOL1) (Chia et al, 2008). In these studies, overexpression of the COLs was able to restore the late flowering phenotype of co mutants in arabidopsis.…”

Section: Limitations and Future Directionssupporting

confidence: 67%

“…Heading Date 1 (Hd1), a CO-like homologue gene in rice, has significant sequence similarity to the Arabidopsis gene and plays a role in photoperiod regulation of flowering through the FT homologue Heading Date 3 (Hd3) gene activation (Yano et al, 2000;Kojima et al, 2002). A study in sugar beet (Beta vulgaris) has found that the CO homologue gene BvCOL1 plays a part in photoperiodic response, as overexpression of this gene in the Arabidopsis co-2 mutant restored the late flowering phenotype (Chia et al, 2008).…”

Section: Timing Of Cab Expression (Cct)mentioning

confidence: 99%

“…CO was selected as the gene of interest in this study as it plays a central role in photoperiodic regulation of flowering in Arabidopsis and has been extensively studied in other species, including rice, sugar beet and Soybean Yano et al, 2000;Suarez-Lopez et al, 2001;Kojima et al, 2002;Hecht et al, 2005;Chia et al, 2008;Huang et al, 2011;Jiang et al, 2011;Liu et al, 2011;Hsu et al, 2012). In Arabidopsis, CO acts as a transcription factor that binds DNA via a unique sequence motif present in the FT promoter, activating its expression.…”

Section: Conservation Of Ppcol-1 With Its Orthologue Genesmentioning

confidence: 99%

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Molecular characterisation of flowering genes in Pongamia Pinnata

Kamde¹

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Pongamia pinnata (Pongamia) is a multipurpose tree that has been used traditionally for medicine, green manure, insecticide, fuel and also a source of timber. It is an indigenous plant to the Indian subcontinent and Southeast Asia, and has been successfully introduced to Northern Australia, New Zealand and several other countries with humid tropical lowlands. Recently, Pongamia has attracted interest as one of the alternative feedstock for biodiesel productions due to its ability to produce seeds with high oil content. The fatty acid methyl ester (FAME) composition of Pongamia met the biodiesel specification standards of USA (ASTMD 6751), Germany (DIN 51606) and European Standard Organisation (EN 14214), and is considered as one of the most suitable sources of biodiesel. Despite the positive attributes described above, Pongamia is not a domesticated species and further research is required for the selection of elite cultivars with desirable traits optimal for large scale production of Pongamia oil. In addition, limited information is currently available regarding the flowering mechanism of Pongamia at the molecular level that could provide the platform for the development of oil-rich seeds.The aim of this thesis is to provide insight and increase the understanding of the genetic network that leads to flowering in Pongamia. Based on large phenotypic diversity of Pongamia, this information could subsequently be used to determine and select traits with unique flowering time that will allow a harvesting window, where harvesting process will not clash with flowering. The first objective of this project is to identify, isolate and characterise the candidate genes that regulate flowering time in Pongamia. This was achieved using molecular biology techniques and bioinformatic approaches based on the information available on flowering mechanisms of Arabidopsis and soybean in the literature. The second objective of this project is to determine the expression pattern of isolated genes during flowering onset. This was achieved through transcriptome methodologies such as RT-PCR and qRT-PCR. The third objective of this project is to investigate the genetic variety of Pongamia. This was achieved through Single Nucleotide Polymorphism (SNPs) analysis and its correlation with the late flowering phenotype of Pongamia.PpCOL-1 and PpPHYB are the two genes that were investigated in this thesis. The orthologue genes of PpCOL-1 and PpPHYB are involved in the flowering regulation of the annual plant Arabidopsis.Since Arabidopsis and Pongamia are both long day plants, it is postulated that these genes might play a role in the flowering time control in Pongamia. PpCOL-1 and PpPHYB were successfully isolated, characterised and compared to their respective orthologue genes in Arabidopsis, Soybean and Medicago. It was found that the amino acid residues within the domain regions in these genes iii are highly conserved in Pongamia. Interestingly, there were no significant differences in the expression patterns of PpCOL-1 and PpPHYB in...

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Sugar Beet Breeding

McGrath

Panella

2018

Plant Breeding Reviews

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Sugar beet contains a large CONSTANS-LIKE gene family including a CO homologue that is independent of the early-bolting (B) gene locus

Cited by 118 publications

References 66 publications

Molecular characterization of CONSTANS-Like (COL) genes in banana (Musa acuminata L. AAA Group, cv. Grand Nain)

Molecular characterization of CONSTANS-Like (COL) genes in banana (Musa acuminata L. AAA Group, cv. Grand Nain)

Molecular characterisation of flowering genes in Pongamia Pinnata

Sugar Beet Breeding

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