ArticleJournal of experimental botany2020
Morphological and stage-specific transcriptome analyses reveal distinct regulatory programs underlying yam (Dioscorea alata L.) bulbil growth.
Article in Journal of experimental botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed.
- Genome-Wide Characterization ofInternational journal of molecular sciences · 2025Article
- Intrapuparial stage aging and PMI estimation based on the developmental transcriptomes of forensically importantHeliyon · 2024Article
- Transcriptome and metabolome analyses reveal regulatory networks associated with nutrition synthesis in sorghum seeds.Communications biology · 2024Article
- Endogenous Hormone Levels and Transcriptomic Analysis Reveal the Mechanisms of Bulbil Initiation inInternational journal of molecular sciences · 2024Article
- Auxin regulates bulbil initiation by mediating sucrose metabolism inHorticulture research · 2024Article
- Bulbil initiation: a comprehensive review on resources, development, and utilisation, with emphasis on molecular mechanisms, advanced technologies, and future prospects.Frontiers in plant science · 2024Review
- Integrated transcriptomic and proteomic analysis of exogenous abscisic acid regulation on tuberous root development inFrontiers in nutrition · 2024Article
- Article
- Characterization of the Molecular Events Underlying the Establishment of Axillary Meristem Region in Pepper.International journal of molecular sciences · 2023Article
- The determination of peanut (Arachis hypogaea L.) pod-sizes during the rapid-growth stage by phytohormones.BMC plant biology · 2023Article
- Identification of BBX gene family and its function in the regulation of microtuber formation in yam.BMC genomics · 2023Article
- WUSCHEL-related homeobox genes cooperate with cytokinin to promote bulbil formation in Lilium lancifolium.Plant physiology · 2022Article
- Roles of Abscisic Acid and Gibberellins in Stem/Root Tuber Development.International journal of molecular sciences · 2022Review
- Regulation Mechanism of Exogenous Brassinolide on Bulbil Formation and Development inFrontiers in plant science · 2021Article
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6 authors.
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Abstract
In yam (Dioscorea spp) species, bulbils at leaf axils are the most striking species-specific axillary structure and exhibit important ecological niches. Genetic regulation underlying bulbil growth remains largely unclear so far. Here, we characterize yam (Dioscorea alata L.) bulbil development using histological analysis, and perform full transcriptional profiling on key developmental stages together with phytohormone analyses. Using the stage-specific scoring algorithm, we have identified 3451 stage-specifically expressed genes that exhibit a tight link between major transcriptional changes and stages. Co-expressed gene clusters revealed an obvious over-representation of genes associated with cell division and expansion at the initiation stage of bulbils (T1). Transcriptional changes of hormone-related genes highly coincided with hormone levels, indicating that bulbil initiation and growth are coordinately controlled by multiple phytohormones. In particular, localized auxin is transiently required to trigger bulbil initiation, and be further depleted or exported from bulbils to promote growth by up-regulation of genes involved in auxinconjugation and efflux. The sharp increase in supply of sucrose and an enhanced trehalose-6-phophate pathway at T1 were observed, suggesting that sucrose probably functions as a key signal and promotes bulbil initiation. Analysis of the expression of transcription factors (TFs) predicated 149 TFs as stage-specifically expressed; several T1-specific TFs (from Aux/IAA, E2F, MYB, and bHLH families) have been shown to play key roles in triggering bulbil formation. Together, our work provides a crucial angle for in-depth understanding of the molecular programs underlying yam's unique bulbil development processes. Stage-specific gene sets can be queried to obtain key candidates regulating bulbil growth, serving as valuable resources for further functional research.
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