Structure and growth of plant cell walls

Nature Reviews Molecular Cell Biology, Год журнала: 2023, Номер 25(5), С. 340 - 358

Опубликована: Дек. 15, 2023

Язык: Английский

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ABLs and TMKs are co-receptors for extracellular auxin

Cell, Год журнала: 2023, Номер 186(25), С. 5457 - 5471.e17

Опубликована: Ноя. 17, 2023

Extracellular perception of auxin, an essential phytohormone in plants, has been debated for decades. Auxin-binding protein 1 (ABP1) physically interacts with quintessential transmembrane kinases (TMKs) and was proposed to act as extracellular auxin receptor, but its role disputed because abp1 knockout mutants lack obvious morphological phenotypes. Here, we identified two new auxin-binding proteins, ABL1 ABL2, that are localized the apoplast directly interact domain TMKs auxin-dependent manner. Furthermore, functionally redundant ABL2 genetically exhibit functions overlap those ABP1 well being independent ABP1. Importantly, TMK1 itself binds synergizes either or binding. Thus, our findings discovered receptors having overlapping distinct from acting together co-receptors auxin.

Язык: Английский

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E3 ubiquitin ligases SINA4 and SINA11 regulate anthocyanin biosynthesis by targeting the IAA29‐ARF5‐1‐ERF3 module in apple

Plant Cell & Environment, Год журнала: 2023, Номер 46(12), С. 3902 - 3918

Опубликована: Сен. 1, 2023

Auxin/indole-3-acetic acid (AUX/IAA) and auxin response factor (ARF) proteins are important components of the signalling pathway, but their ubiquitination modification mechanism auxin-mediated anthocyanin biosynthesis remain elusive. Here, ARF MdARF5-1 was identified as a negative regulator in apple, it integrates ethylene signals by inhibiting expression MdERF3. The repressor MdIAA29 decreased inhibitory effect on attenuating transcriptional inhibition MdERF3 MdARF5-1. In addition, E3 ubiquitin ligases MdSINA4 MdSINA11 played positive regulatory roles targeting for degradation, respectively. destabilized to regulate accumulation signalling. sum, our data revealed crosstalk between mediated IAA29-ARF5-1-ERF3 module provide new insights into pathway.

Язык: Английский

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Photosynthesis promotion mechanisms of artificial humic acid depend on plant types: A hydroponic study on C3 and C4 plants

The Science of The Total Environment, Год журнала: 2024, Номер 917, С. 170404 - 170404

Опубликована: Янв. 26, 2024

Язык: Английский

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A Nanofilm-Based Fluorescent Sensor toward Highly Efficient Detection of Ethephon

Analytical Chemistry, Год журнала: 2024, Номер 96(6), С. 2559 - 2566

Опубликована: Фев. 1, 2024

Ethephon (ETH) is widely used to promote fruit ripening and improve quality. However, improper use harmful human health the environmental safety. Therefore, development of techniques for on-site at real-time monitoring ETH importance its safe use. In this work, we developed a nanofilm-based fluorescence film sensor (FFS) realized highly efficient detection in vapor phase, where limit (DL) <0.2 ppb, response time less than 10 s, interference almost free. The unusual sensing performance was ascribed specific binding nanofilm great porosity, which enables adlayer mass transfer, requirement high signal-to-noise ratio. Moreover, visualization-based qualitative also realized. nanofilm, key component sensor, prepared humid air/DMSO interface. building blocks were specially designed fluorescent o-carborane derivative (CB-2CHO) cross-linker BTN possessing three acylhydrazine groups. as flexible, uniform, thickness tunable, photochemically super stable. We believe our effort not only addresses challenging issue but provides another route developing new FFSs via innovation.

Язык: Английский

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Membrane nanodomains: Dynamic nanobuilding blocks of polarized cell growth

PLANT PHYSIOLOGY, Год журнала: 2023, Номер 193(1), С. 83 - 97

Опубликована: Май 17, 2023

Abstract Cell polarity is intimately linked to numerous biological processes, such as oriented plant cell division, particular asymmetric differentiation, and tissue morphogenesis, transport of hormones nutrients. typically initiated by a polarizing cue that regulates the spatiotemporal dynamic molecules, leading establishment maintenance polar domains at plasma membrane. Despite considerable progress in identifying key regulators plants, molecular cellular mechanisms underlying formation have yet be fully elucidated. Recent work suggests critical role for membrane protein/lipid nanodomains polarized morphogenesis plants. One outstanding question how dynamics signaling are controlled achieve robust polarization. In this review, we first summarize current state knowledge on potential regulatory nanodomain dynamics, with special focus Rho-like GTPases from We then discuss pavement system an example cells may integrate multiple signals nanodomain-involved feedback polarity. A mechanistic understanding nanodomains’ roles still early stages will remain exciting area future investigations.

Язык: Английский

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PIN2-mediated self-organizing transient auxin flow contributes to auxin maxima at the tip of Arabidopsis cotyledons

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 5, 2025

Язык: Английский

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The airborne herbivore‐induced plant volatile indole is converted to benzoxazinoid defense compounds in maize plants

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

Summary Herbivore‐induced plant volatiles act as danger signals to prime defense responses in neighboring plants, yet many cases the mechanism behind this priming is not known. Volatile may be recognized directly by receptors and/or converted into other active compounds. Here we investigate metabolic fate of volatile indole, a known signal maize ( Zea mays ), determine if its conversion compounds could play role defenses. We identified benzoxazinoids major products from indole using heavy isotope‐labeled and Pathway Origin Determination Untargeted Metabolomics (PODIUM) analysis. then used benzoxazinoid biosynthesis mutants their indole‐mediated priming. Labeled was DIMBOA‐glucoside bx2 benzoxazinone synthesis2 )‐dependent manner. The mutant plants showed elevated green leaf (GLV) production response wounding Spodoptera frugiperda regurgitant irrespective exposure. Thus, benzoxazinoids, part due enhanced these phytoanticipins. However, GLV does rely on so also has signaling functions.

Язык: Английский

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Pan-genome identification and expression analysis of the auxin response gene family in potato

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Background The auxin response factor plays an important role in plant growth and development, stress resistance. In this study, the family was identified based on 47 high-quality potato pan-genomes. Results There were no core or private genes among 28 members of pan-gene family, with only one being a near-core gene, while rest non-essential genes. Ka/Ks ratio values showed that gene under positive selection, remaining purifying selection. Structural variations 21 genomes did not significantly affect expression members, nor any significant differences observed. led to changes conserved domains some strains. RNA-seq data analysis response-factor differentially expressed drought relative control conditions; moreover, various differed stress. Further revealed transcription factors involved regulating members. Conclusions Our findings function biological processes potato, provide new theoretical reference for resistance-breeding crop species.

Язык: Английский

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Hierarchical global and local auxin signals coordinate cellular interdigitation inArabidopsis

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Июнь 20, 2024

Abstract The development of multicellular tissues requires both local and global coordination cell polarization, however, the mechanisms underlying their interplay are poorly understood. In Arabidopsis, leaf epidermal pavement cells (PC) develop a puzzle-piece shape locally coordinated through apoplastic auxin signaling. Here we show also globally coordinates interdigitation by activating TIR1/AFB-dependent nuclear signaling pathway. This pathway promotes transient maximum at cotyledon tip, which then moves across PC as demonstrated uncaged rescuing defects in tir1;afb1;afb2;afb4;afb5 mutant but not tmk1;tmk2;tmk3;tmk4 mutants. Our findings that hierarchically integrated systems, respectively depend on gene transcription nucleus TMK-mediated rapid activation ROP GTPases surface, control patterns Arabidopsis cotyledons, revealing mechanism for coordinating cellular process with whole tissues.

Язык: Английский

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