Auxin in Root Development

Cold Spring Harbor Perspectives in Biology, Год журнала: 2021, Номер unknown, С. a039933 - a039933

Опубликована: Июль 26, 2021

Suruchi Roychoudhry and Stefan Kepinski Centre for Plant Sciences, Faculty of Biological University Leeds, Leeds LS2 9JT, United Kingdom Correspondence: s.roychoudhry{at}leeds.ac.uk; s.kepinski{at}leeds.ac.uk

Язык: Английский

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Fourteen Stations of Auxin

Cold Spring Harbor Perspectives in Biology, Год журнала: 2021, Номер 14(5), С. a039859 - a039859

Опубликована: Авг. 16, 2021

Auxin has always been at the forefront of research in plant physiology and development. Since earliest contemplations by Julius von Sachs Charles Darwin, more than a century-long struggle waged to understand its function. This largely reflects failures, successes, inevitable progress entire field signaling Here I present 14 stations on our long sometimes mystical journey auxin. These highlights were selected give flavor show scope limits current knowledge. A special focus is put features that make auxin unique among phytohormones, such as dynamic, directional transport network, which integrates external internal signals, including self-organizing feedback. Accented are persistent mysteries controversies. The unexpected discoveries related rapid responses growth regulation recently disturbed contentment regarding understanding mechanism. new revelations, along with advances technology, usher us into new, exciting era research.

Язык: Английский

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Role of transcriptional regulation in auxin-mediated response to abiotic stresses

Frontiers in Genetics, Год журнала: 2024, Номер 15

Опубликована: Апрель 24, 2024

Global climate change (GCC) is posing a serious threat to organisms, particularly plants, which are sessile. Drought, salinity, and the accumulation of heavy metals alter soil composition have detrimental effects on crops wild plants. The hormone auxin plays pivotal role in response stress conditions through fine regulation plant growth. Hence, rapid, tight, coordinated its concentration achieved by modulation at multiple levels. Beyond structural enzymes involved biosynthesis, transport, signal transduction, transcription factors (TFs) can finely rapidly drive specific tissues. Auxin Response Factors (ARFs) such as ARF4, 7, 8, 19 many other TF families, WRKY MADS, been identified play modulating various auxin-mediated responses recent times. Here, we review most relevant literature TFs associated with biosynthetic, signalling pathways miRNA-related feedback loops major abiotic stresses. Knowledge may be utmost importance counteracting GCC future agriculture pave way for increased resilience.

Язык: Английский

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FERONIA-mediated TIR1/AFB2 oxidation stimulates auxin signaling in Arabidopsis

Molecular Plant, Год журнала: 2024, Номер 17(5), С. 772 - 787

Опубликована: Апрель 4, 2024

Язык: Английский

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Cell wall dynamic changes and signaling during plant lateral root development

Journal of Integrative Plant Biology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Lateral roots (LRs), are an important component of plant roots, playing a crucial role in anchoring the soil and facilitating uptake water nutrients. As post-embryonic organs, LRs originate from pericycle cells primary root, their formation is characterized by precise regulation cell division complex intercellular interactions, both which closely tied to wall regulation. Considering rapid advances molecular techniques over past three decades, we reframe understanding dynamic change during LR development summarizing factors that precipitate these changes effects, as well regulated signals involved. Additionally, discuss current challenges this field propose potential solutions.

Язык: Английский

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Rooted in Communication: Exploring Auxin–Salicylic Acid Nexus in Root Growth and Development

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

ABSTRACT Plant hormones are pivotal in orchestrating diverse aspects of growth and developmental processes. Among various phytohormones, auxin salicylic acid (SA) stand out as important regulators, often exerting opposing effects on overall plant growth. Essentially, research has indicated that SA‐mediated pathways exhibit mutual antagonism during pathogen challenge. Additionally, recent years, significant advancements have been made uncovering the molecular intricacies govern action interplay between these two phytohormones essential growth‐related In this discussion, we briefly delve into genetic mechanisms involved SA antagonism. We then analyse detail how dialogue impacts critical root development, with an emphasis transcriptional protein regulatory networks. Finally, propose potential exploring their interaction other below ground Understanding relationship could provide valuable insights for optimizing enhancing crop yields.

Язык: Английский

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Comprehensive Genomic Analysis of Trihelix Transcription Factor Genes and Their Expression Underlying Abiotic Stress in Euphrates Poplar (Populus euphratica)

Plants, Год журнала: 2025, Номер 14(5), С. 662 - 662

Опубликована: Фев. 21, 2025

Trihelix transcription factors (TTFs) are light-sensitive proteins characterized by a triple-helix structure that play crucial role in regulating plant growth and development, especially response to abiotic stressors, such as drought salinity. This intriguing family of has been the focus extensive functional studies across various species. Despite their recognized significance, trihelix Populus euphratica not thoroughly explored, warranting more attention. study identifies 35 full-length genes euphratica, which grouped into five categories (GT-1, GT-γ, GT-2, SIP1, SH4) based on conserved motifs structural similarities, these unevenly distributed 19 linkage groups chromosomes. A syntenic analysis was conducted P. comparing it other The promoters contain numerous stress-responsive cis-elements, indicating potential for respond stress. RT-qPCR discovered significant induction gene salt stress, with 21 PeuTTF exhibiting distinct expression levels under conditions responsive Notably, heightened PeuTTF6, PeuTTF9, PeuTTF20 observed both roots leaves during suggesting TTF is connected plant’s conditions. Additionally, increases were noted PeuTTF2, PeuTTF31, PeuTTF32, may be convoluted These discoveries highlight improving tolerance plants. We offer new perspectives evolutionary trends variants we establish groundwork understanding properties salt-stressed drought-stressed provides opportunities advancement desert poplar agriculture have wider ramifications tree breeding techniques targeted at performance durability, particularly dry areas.

Язык: Английский

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Biosynthesis‐ and transport‐mediated dynamic auxin distribution during seed development controls seed size in Arabidopsis

The Plant Journal, Год журнала: 2023, Номер 113(6), С. 1259 - 1277

Опубликована: Янв. 17, 2023

Auxin is indispensable to the fertilization-induced coordinated development of embryo, endosperm, and seed coat. However, little attention has been given distribution pattern, maintenance mechanism, function auxin throughout process development. In present study, we found that response signals display a dynamic pattern during Arabidopsis Shortly after fertilization, strong were observed at funiculus, chalaza, micropylar integument where embryo attaches. Later, additional appeared middle layer inner (ii1') above chalaza whole outer (oi1). These peaked when was mature, then declined upon desiccation disappeared in dried seed. biosynthesis genes, including ASB1, TAA1, YUC1, YUC4, YUC8, YUC9, contributed accumulation funiculus efflux carrier PIN3 influx AUX1 also polar expressed ii1 (innermost integument) oi1 layers showed localization. both endosperm displayed uniform Further research demonstrated coat regulates size. Transgenic plants specifically express YUC8 gene oi2 or produced larger seeds. results provide useful tools for cultivating high-yielding crops.

Язык: Английский

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PeFUS3 Drives Lateral Root Growth Via Auxin and ABA Signalling Under Drought Stress in Populus

Plant Cell & Environment, Год журнала: 2024, Номер unknown

Опубликована: Сен. 24, 2024

ABSTRACT Changes in root system architecture are vital for plant adaptation to drought stress, yet the underlying molecular mechanisms of this process remain largely elusive. Here, FUSCA3 ( FUS3 ), a B3 domain transcription factor isolated from Populus euphratica, was found be an important gene regulating lateral (LR) development under stress. The expression PeFUS3 strongly induced by ABA and dehydration treatments. Overexpressing poplar 84 K P. alba × glandulosa ) positively regulated LR growth enhanced tolerance, while knockout lines, generated CRISPR/Cas9 system, displayed repressed weakened tolerance. Further investigation demonstrated that activated PIN2 , PIN6a AUX1 which were key genes involved auxin transport, suggesting modulated stress through signalling. Moreover, directly upregulated PePYL3 expression, overexpressing lines exhibited significantly increased resistance. In addition, PeABF2, responsive factor, interacted with its transcription, indicating signalling pathway. Taken together, is regulator, maintaining modulating crosstalk

Язык: Английский

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The Interplay between Hydrogen Sulfide and Phytohormone Signaling Pathways under Challenging Environments

International Journal of Molecular Sciences, Год журнала: 2022, Номер 23(8), С. 4272 - 4272

Опубликована: Апрель 12, 2022

Hydrogen sulfide (H2S) serves as an important gaseous signaling molecule that is involved in intra- and intercellular signal transduction plant–environment interactions. In plants, H2S formed sulfate/cysteine reduction pathways. The activation of endogenous its exogenous application has been found to be highly effective ameliorating a wide variety stress conditions plants. interferes with the cellular redox regulatory network prevents degradation proteins from oxidative via post-translational modifications (PTMs). H2S-mediated persulfidation allows rapid response networks environmental stimuli. addition, crosstalk other signals plant growth regulators enable multiple cascades drive adaptation. this review, we summarize discuss current understanding molecular mechanisms H2S-induced adjustments interactions between various pathways emphasizing recent progress our effects on PTMs proteins. We also future directions would advance ultimately mitigate impacts stresses

Язык: Английский

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