Regulation of the early GA biosynthesis pathway in pea

Davidson, Sandra E.; Swain, Stephen M.; Reid, James B.

doi:10.1007/s00425-005-0045-7

Cited by 31 publications

(26 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bioactive GA levels also appear not to feedback regulate PsCPS1 mRNA levels in deseeded pea pericarps (Fig. 6A), roots, or shoots (Davidson et al, 2005;Ayele et al, 2006b). These data confirm the results of a number of studies that hormonal regulation of GA biosynthesis occurs mainly later in the pathway (Hedden and Phillips, 2000;Yamaguchi, 2008).…”

Section: Auxin (4-cl-iaa) Regulates Ga Biosynthesis and Catabolism Insupporting

confidence: 78%

Developmental and Hormonal Regulation of Gibberellin Biosynthesis and Catabolism in Pea Fruit

et al. 2009

View full text Add to dashboard Cite

Section: Auxin (4-cl-iaa) Regulates Ga Biosynthesis and Catabolism Insupporting

confidence: 78%

Developmental and Hormonal Regulation of Gibberellin Biosynthesis and Catabolism in Pea Fruit

et al. 2009

View full text Add to dashboard Cite

“…The autonomous flowering pathway controls flowering time by transcriptional modification of chromatin and RNA (Simpson, 2004;He et al, 2003). DNA and histone methylation are involved in the vernalization pathway (Jung and Muller, 2009), and flower development is also regulated by the activity of gibberellin in the gibberellin pathway (Davidson et al, 2005;He and Amasino, 2005). All of these mechanisms are associated with metabolic processes and binding functions.…”

Section: Discussionmentioning

confidence: 99%

Characterization and comparison of key genes involved with flowering time regulation from Arabidopsis thaliana, Oryza sativa and Zea mays

Ma¹,

Wei²,

Mason³

et al. 2013

Afr. J. Biotechnol.

View full text Add to dashboard Cite

Flowering is an important phase in the angiosperms life cycle, as it signifies the transition from vegetative to reproductive phase. Recently, increasing number of flowering genes are being cloned and analyzed. However, few studies have focused on the comparative analysis of key candidate genes involved in the regulation of flowering time across species. We explore the common characteristics of key flowering genes across species and compare their diversity and evolutionary divergence. We analyze key flowering candidate genes in three species, Arabidopsis thaliana, Oryza sativa and Zea mays. The homology of flowering genes across the three species was more than 60%. Nucleotide polymorphism analysis for these genes revealed high sequence conservation during evolution, although some small insertion/deletions (InDels) were also detected. Furthermore, these candidate genes harbored simple repeat sequence repeats that perhaps drove genetic variation and divergence of these genes. The flowering genes were expressed preferentially in the organelle and cellular components and participated mainly in metabolic processes with binding and catalytic functionality. These results suggested that key flowering genes have more common characteristics that may allow the identification and analysis of other flowering genes, especially in species where genome sequencing has not yet been performed.

show abstract

“…5), suggesting that these genes were not subject to feedback regulation by gibberellin activity, at the level of transcript abundance. Expression analysis in a range of plant species, including pea (Davidson et al 2005) and Arabidopsis (Silverstone et al 1997;Yamaguchi et al 1998), indicates that there is probably no feedback regulation by gibberellin activity on the genes encoding enzymes of early steps of gibberellin biosynthesis from GGDP to GA 12 . The expression of the HaGA20ox2 gene encoding HaGA20ox2, which catalyzes the formation of GA 20 Fig.…”

Section: Transcription Of Cps-and Ks-like Genes In Sunflower Organsmentioning

confidence: 98%

Molecular Cloning and Expression Profile Analysis of Three Sunflower (Helianthus annuus) Diterpene Synthase Genes

2010

View full text Add to dashboard Cite

ent-Kaurene, a key precursor of gibberellins, is formed by the action of two diterpene synthases (diTPSs), ent-copalyl diphosphate synthase (CPS), and ent-kaurene synthase (KS). The full-length cDNAs of CPS- (HaCPS1L) and KS-like (HaKS2L and HaKS3L) genes were isolated from sunflower. The amino acid sequences of HaCPS1L, HaKS2L, and HaKS3L exhibit structural features and homology to diTPSs of several plant species involved in gibberellin biosynthesis. RT-PCR analysis indicates that the expression of all genes (HaCPS1L, HaKS2L, and HaKS3L) is highly regulated during growth and development. All three diTPSs are preferentially expressed in rapidly growing tissues. HaKS2L is expressed at a much lower level than the other two diTPS genes. During seed development, the high level of both HaCPS1L and HaKS3L transcripts correlated with the period of rapid growth of the embryo. The three diTPS genes are not subjected to feedback regulation by gibberellin activity.

show abstract

Regulation of the early GA biosynthesis pathway in pea

Cited by 31 publications

References 47 publications

Developmental and Hormonal Regulation of Gibberellin Biosynthesis and Catabolism in Pea Fruit

Developmental and Hormonal Regulation of Gibberellin Biosynthesis and Catabolism in Pea Fruit

Characterization and comparison of key genes involved with flowering time regulation from Arabidopsis thaliana, Oryza sativa and Zea mays

Molecular Cloning and Expression Profile Analysis of Three Sunflower (Helianthus annuus) Diterpene Synthase Genes

Contact Info

Product

Resources

About