ArticleBMC plant biology2020
Flowering in Persian walnut: patterns of gene expression during flower development.
Article in BMC plant biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 59 citations in OpenAlex.
- Identification of candidate loci for leafing date in Iranian walnut germplasm collection using GBS-GWAS approach and validation by SNaPshot.BMC plant biology · 2026Article
- Unraveling the role of interstocks in delaying flowering and mitigating spring frost risk in Iranian commercial almonds through morphophysiological, biochemical, and molecular approaches.BMC plant biology · 2026Article
- Combined transcriptional and metabolomic analysis of flavonoids in the regulation of female flower bud differentiation in Juglans sigillata Dode.BMC plant biology · 2025Article
- Inheritance patterns of pomological traits in walnut hybridization breeding: influence of parental varieties on nut traits.BMC plant biology · 2025Article
- From juvenile to adult: investigating miRNAs, gene expression, and the juvenile cone in olive development.Frontiers in plant science · 2025Article
- Morphological and pomological assessments of seedling-originated walnut (Juglans regia L.) trees to select the promising late-leafing genotypes.BMC plant biology · 2024Article
- BnAP2-12 overexpression delays ramie flowering: evidence from AP2/ERF gene expression.Frontiers in plant science · 2024Article
- Genome-Wide Identification of the CBF Gene Family and ICE Transcription Factors in Walnuts and Expression Profiles under Cold Conditions.International journal of molecular sciences · 2023Article
- Functional Characterization of AP2/ERF Transcription Factors during Flower Development and Anthocyanin Biosynthesis Related Candidate Genes inInternational journal of molecular sciences · 2023Article
- Molecular mechanisms of flowering phenology in trees.Forestry research · 2023Review
- Phytohormone biosynthesis and transcriptional analyses provide insight into the main growth stage of male and female conesFrontiers in plant science · 2023Article
- Genome-wide identification of the AcMADS-box family and functional validation ofFrontiers in plant science · 2023Article
- Functional verification of thePeerJ · 2023Article
- Integrated Genomic and Transcriptomic Elucidation of Flowering in Garlic.International journal of molecular sciences · 2022Article
- Genome-wide identification and characterization of AP2/ERF gene superfamily during flower development in Actinidia eriantha.BMC genomics · 2022Article
- SPL9 mediates freezing tolerance by directly regulating the expression of CBF2 in Arabidopsis thaliana.BMC plant biology · 2022Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundFlower development and sufficient fruit set are important parameters with respect to walnut yield. Knowledge about flowering genes of fruit trees can help to conduct better molecular breeding programs. Therefore, this study was carried out to investigate the expression pattern of some flowering genes (FT, SOC1, CAL, LFY and TFL1) in Persian walnut (cv. Chandler) during the growing season and winter dormancy.
resultsThe results showed that walnut flower induction and initiation in Shahmirzad, Iran occurred in early June and late September, respectively. After meeting chilling and heat requirement, flower differentiation and anthesis occurred in late-March and mid-April to early-May, respectively. Study of flowering gene expression showed that the expression of the FT gene increased in three stages including before breaking of bud dormancy, from late March to late April (coincided with flower differentiation and anthesis) and from late May to mid-June (coincided with flower induction). Like FT, the expression of SOC1 gene increased during flower induction and initiation (mid-May to early-August) as well as flower anthesis (mid-April to early-May). LFY and CAL genes as floral meristem identity genes are activated by FT and SOC1 genes. In contrast with flowering stimulus genes, TFL1 showed overexpression during winter dormancy which prevented flowering.
conclusionThe expression of FT gene activated downstream floral meristem identity genes including SOC1, CAL and LFY which consequently led to release bud dormancy as well as flower anthesis and induction. Also, TFL1 as a flowering inhibitor gene in walnut showed overexpression during the bud dormancy. Chilling accumulation reduced TFL1 gene expression and increased the expression of flowering genes which ultimately led to overcome dormancy.
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