ArticleDevelopment genes and evolution2006
Characterization of LEAFY COTYLEDON1-LIKE gene in Helianthus annuus and its relationship with zygotic and somatic embryogenesis.
Article in Development genes and evolution, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 54 citations in OpenAlex.
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- Induction of Somatic Embryogenesis in Plants: Different Players and Focus on WUSCHEL and WUS-RELATED HOMEOBOX (WOX) Transcription Factors.International journal of molecular sciences · 2022Review
- iTRAQ-based comparative proteomic analysis provides insights into somatic embryogenesis in Gossypium hirsutum L.Plant molecular biology · 2018Article
- Molecular cloning, phylogenetic analysis, and expression patterns of LATERAL SUPPRESSOR-LIKE and REGULATOR OF AXILLARY MERISTEM FORMATION-LIKE genes in sunflower (Helianthus annuus L.).Development genes and evolution · 2017Article
- De novo transcriptome analysis reveals insights into dynamic homeostasis regulation of somatic embryogenesis in upland cotton (G. hirsutum L.).Plant molecular biology · 2016Article
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- Molecular analysis of a sunflower gene encoding an homologous of the B subunit of a CAAT binding factor.Molecular biology reports · 2012Article
- Arabidopsis EMBRYOMAKER encoding an AP2 domain transcription factor plays a key role in developmental change from vegetative to embryonic phase.Plant molecular biology · 2010Article
- Molecular aspects of somatic-to-embryogenic transition in plants.Journal of chemical biology · 2009Article
- Probing the endosperm gene expression landscape in Brassica napus.BMC genomics · 2009Article
- Ectopic expression of LEAFY COTYLEDON1-LIKE gene and localized auxin accumulation mark embryogenic competence in epiphyllous plants of Helianthus annuus x H. tuberosus.Annals of botany · 2009Article
- Characterization of VvSERK1, VvSERK2, VvSERK3 and VvL1L genes and their expression during somatic embryogenesis of grapevine (Vitis vinifera L.).Plant cell reports · 2008Article
- Characterization of three somatic embryogenesis receptor kinase genes from wheat, Triticum aestivum.Plant cell reports · 2008Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Helianthus annuus LEAFY COTYLEDON1-LIKE (HaL1L) gene encodes a heme-activated protein 3 subunit of the CCAAT box-binding factor. The phylogenetic analysis indicates that HaL1L is closely related to LEAFY COTYLEDON1 (LEC1)-type of Arabidopsis thaliana. In particular, the peptide results homologous to the LEC1-LIKE gene of A. thaliana, with which it shares a high amino acid sequence identity (56%). HaL1L transcripts are accumulated primarily at an early stage of sunflower embryogenesis. High levels of HaL1L messenger RNA (mRNA) have been detected in the developing embryo proper, suspensor, endosperm, integument, and integumentary tapetum cells, while in unfertilized ovules, HaL1L mRNA was present at rather low levels. In an attempt to examine the involvement of HaL1L on somatic embryogenesis, a somaclonal variant of H. annuus x H. tuberosus (EMB-2) that produces ectopic embryo- and shoot-like structures, arranged in clusters along leaf veins, was used. We found that the epiphyllous proliferation of ectopic embryos on EMB-2 leaves was associated to HaL1L mRNA accumulation. The detection of HaL1L transcripts was evident in somatic embryos at the heart- and early cotyledon-stage. On the contrary, no signal related to HaL1L transcript accumulation was observed in EMB-2 leaves characterized by the presence of shoot-like structures. Together, these results support the conclusion that the transcription of the HaL1L gene is maintained both in zygotic and in somatic embryogenesis. In addition, the ectopic accumulation of HaL1L mRNA in parenchymal cells around the vascular bundles of epiphyllous leaves opens the possibility that HaL1L could also be involved in switching somatic cell fate towards embryogenic competence.
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