Auxin promotes fiber elongation by enhancing gibberellic acid biosynthesis in cotton

Zhu, Liping; Jiang, Bin; Zhu, Jiaojie; Xiao, Guanghui

doi:10.1111/pbi.13771

Cited by 33 publications

(11 citation statements)

References 9 publications

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“…We found reduced levels of GA intermediates in the vt2 mutant and synergistic effects in the double mutants of vt2 and GA biosynthesis dwarf plant mutants. These findings point to an interaction of auxin with the GA biosynthesis pathway to control plant growth, which has only been experimentally investigated in eudicots (Ross et al ., 2001; Wolbang & Ross, 2001; Zhu et al ., 2021). Although we found a significant reduction in specific GA intermediates, we did not detect bioactive GAs in both normal and mutant samples.…”

Section: Discussionmentioning

confidence: 99%

Hormonal control of medial–lateral growth and vein formation in the maize leaf

Robil

McSteen

2023

New Phytologist

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Summary Parallel veins are characteristic of monocots, including grasses (Poaceae). Therefore, how parallel veins develop as the leaf grows in the medial–lateral (ML) dimension is a key question in grass leaf development. Using fluorescent protein reporters, we mapped auxin, cytokinin (CK), and gibberellic acid (GA) response patterns in maize (Zea mays) leaf primordia. We further defined the roles of these hormones in ML growth and vein formation through combinatorial genetic analyses and measurement of hormone concentrations. We discovered a novel pattern of auxin response in the adaxial protoderm that we hypothesize has important implications for the orderly formation of 3° veins early in leaf development. In addition, we found an auxin transport and response pattern in the margins that correlate with the transition from ML to proximal–distal growth. We present evidence that auxin efflux precedes CK response in procambial strand development. We also determined that GA plays an early role in the shoot apical meristem as well as a later role in the primordium to restrict ML growth. We propose an integrative model whereby auxin regulates ML growth and vein formation in the maize leaf through control of GA and CK.

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Section: Discussionmentioning

confidence: 99%

Hormonal control of medial–lateral growth and vein formation in the maize leaf

Robil

McSteen

2023

New Phytologist

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“…Each hormone can correspond to multiple receptors in plants, and the relationship between plant hormone receptors is very complex [ 45 ]. The interaction of different hormone synthesis is also complex, as IAA can promote the biosynthesis of gibberellin (GA) to promote fiber development, and GA may regulate fiber development downstream of IAA [ 46 ]. The function and crosstalk of common hormones are shown in Table 1 .…”

Section: Study On the Mechanism Of Medicinal Plant Tissue Culturementioning

confidence: 99%

Application of Data Modeling, Instrument Engineering and Nanomaterials in Selected Medid the Scientific Recinal Plant Tissue Culture

Xuan

Zhang

et al. 2023

Plants

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At present, most precious compounds are still obtained by plant cultivation such as ginsenosides, glycyrrhizic acid, and paclitaxel, which cannot be easily obtained by artificial synthesis. Plant tissue culture technology is the most commonly used biotechnology tool, which can be used for a variety of studies such as the production of natural compounds, functional gene research, plant micropropagation, plant breeding, and crop improvement. Tissue culture material is a basic and important part of this issue. The formation of different plant tissues and natural products is affected by growth conditions and endogenous substances. The accumulation of secondary metabolites are affected by plant tissue type, culture method, and environmental stress. Multi-domain technologies are developing rapidly, and they have made outstanding contributions to the application of plant tissue culture. The modes of action have their own characteristics, covering the whole process of plant tissue from the induction, culture, and production of natural secondary metabolites. This paper reviews the induction mechanism of different plant tissues and the application of multi-domain technologies such as artificial intelligence, biosensors, bioreactors, multi-omics monitoring, and nanomaterials in plant tissue culture and the production of secondary metabolites. This will help to improve the tissue culture technology of medicinal plants and increase the availability and the yield of natural metabolites.

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“…The interaction between plant hormones plays an important regulatory role in plant growth and development. Studies have shown that exogenous IAA application can improve endogenous GA biosynthesis [50]. The production of embryonic cells increased as GA content increased, and the amount of bioactive GA positively correlated with the formation of somatic embryos [51].…”

Section: Treatment With Exogenous Iaa To Initiate Microspore Embryoge...mentioning

confidence: 99%

Exogenous spraying of IAA improved the efficiency of microspore embryogenesis in wucai (Brassica campestris L.) by affecting the balance of endogenous hormones, energy metabolism and cell wall metabolism

Wang

Zhang

et al. 2023

Preprint

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Background: Spraying indoleacetic acid (IAA) on the buds of Wucai (Brassica campestris L.) can increase the incidence of isolated microspore embryogenesis, but the mechanism of increasing microspore development remains unclear. Results: The statistics of isolated microspore embryogenesis showed that spraying100 mg. L-1 IAA (purity 99%) to the bud was the optimal concentration for inducing isolated microspore embryogenesis in B. campestris L. Microscopic observation showed that IAA treatment accelerated the development process of microspores. In addition, the contents of amino acids, soluble total sugar, protein, and starch were significantly increased, and the dynamic balance between hormones was changed due to the change of endogenous hormone content. To explore the molecular mechanism of IAA affecting microspore embryogenesis, the mononuclear flower buds which were treated with IAA for 24h were selected and the mononuclear flower buds which were treated with the same dose of water at the same period were used as the control for transcriptome analysis. It was found that more DEGs was enriched in plant hormone synthesis and signal transduction pathways, pentose and glucuronic acid exchange pathway, and oxidative phosphorylation pathway, and most of them showed upregulation. These changes of DEGs broke the balance between endogenous plant hormones, initiated the generation of microspore embryos, accelerated the metabolism of the cell wall and the development of microspores. Conclusions: This study helped to clarify the mechanism of microspore embryogenesis by IAA spring and provided a basis for further research on the molecular mechanisms of microspore development and the selection of key genes.

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Auxin promotes fiber elongation by enhancing gibberellic acid biosynthesis in cotton

Cited by 33 publications

References 9 publications

Hormonal control of medial–lateral growth and vein formation in the maize leaf

Hormonal control of medial–lateral growth and vein formation in the maize leaf

Application of Data Modeling, Instrument Engineering and Nanomaterials in Selected Medid the Scientific Recinal Plant Tissue Culture

Exogenous spraying of IAA improved the efficiency of microspore embryogenesis in wucai (Brassica campestris L.) by affecting the balance of endogenous hormones, energy metabolism and cell wall metabolism

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