ArticleAnnals of botany2012
Gibberellin is required for the formation of tension wood and stem gravitropism in Acacia mangium seedlings.
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 47 citations in OpenAlex.
- Identification of a major QTL and candidate genes analysis for branch angle in rapeseed (Frontiers in plant science · 2024Article
- A combination of scanning electron microscopy and broad argon ion beam milling provides intact structure of secondary tissues in woody plants.Scientific reports · 2022Article
- Early transcriptional response to gravistimulation in poplar without phototropic confounding factors.AoB PLANTS · 2021Article
- Gibberellin disturbs the balance of endogenesis hormones and inhibits adventitious root development ofSaudi journal of biological sciences · 2021Article
- Genome-wide analysis of lncRNA and mRNA expression and endogenous hormone regulation during tension wood formation in Catalpa bungei.BMC genomics · 2020Article
- Transcriptome profiles reveal that gibberellin-related genes regulate weeping traits in crape myrtle.Horticulture research · 2020Article
- Exogenous Application of Phytohormones Promotes Growth and Regulates Expression of Wood Formation-Related Genes inInternational journal of molecular sciences · 2019Article
- Ethylene Signaling Is Required for Fully Functional Tension Wood in Hybrid Aspen.Frontiers in plant science · 2019Article
- Stem gravitropism and tension wood formation in Acacia mangium seedlings inclined at various angles.Annals of botany · 2018Article
- Fasciclin-like arabinogalactan proteins, PtFLAs, play important roles in GA-mediated tension wood formation in Populus.Scientific reports · 2017Article
- Developing xylem-preferential expression of PdGA20ox1, a gibberellin 20-oxidase 1 from Pinus densiflora, improves woody biomass production in a hybrid poplar.Plant biotechnology journal · 2016Article
- Transcript profiling of Populus tomentosa genes in normal, tension, and opposite wood by RNA-seq.BMC genomics · 2015Article
- Article
- Distribution of tension wood like gelatinous fibres in the roots of Acacia nilotica (Lam.) Willd.Planta · 2014Article
- Transcriptome sequencing and profiling of expressed genes in cambial zone and differentiating xylem of Japanese cedar (Cryptomeria japonica).BMC genomics · 2014Article
- Transcriptome profiling of radiata pine branches reveals new insights into reaction wood formation with implications in plant gravitropism.BMC genomics · 2013Article
- Gibberellin mediates the development of gelatinous fibres in the tension wood of inclined Acacia mangium seedlings.Annals of botany · 2013Article
- Tree developmental biology.Annals of botany · 2012Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsAngiosperm trees generally form tension wood on the upper sides of leaning stems. The formation of tension wood is an important response to gravitational stimulus. Gibberellin appears to be involved in the differentiation of secondary xylem, but it remains unclear whether gibberellin plays a key role in the formation of tension wood and plant gravitropism. Therefore, a study was designed to investigate the effects of gibberellin and of inhibitors of the synthesis of gibberellin, namely paclobutrazole and uniconazole-P, on the formation of tension wood and negative stem gravitropism in Acacia mangium seedlings.
methodsGibberellic acid (GA(3)), paclobutrazole and uniconazole-P were applied to seedlings via the soil in which they were growing. Distilled water was applied similarly as a control. Three days after such treatment, seedlings were tilted at an angle of 45° from the vertical, and samples of stems were collected for analysis 2 weeks, 2 months and 6 months after tilting. The effects of treatments on the stem recovery degree (Rº) were analysed as an index of the negative gravitropism of seedlings, together the width of the region of tension wood in the upper part of inclined stems. KEY
resultsIt was found that GA(3) stimulated the negative gravitropism of tilted seedling stems of A. mangium, while paclobutrazole and uniconazole-P inhibited recovery to vertical growth. Moreover, GA(3) stimulated the formation of tension wood in tilted A. mangium seedlings, while paclobutrazole and uniconazole-P strongly suppressed the formation of tension wood, as assessed 2 weeks after tilting.
conclusionsThe results suggest that gibberellin plays an important role at the initial stages of formation of tension wood and in stem gravitropism in A. mangium seedlings in response to a gravitational stimulus.
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