Stress-induced reactive oxygen species compartmentalization, perception and signalling

Nature Plants, Journal Year: 2021, Volume and Issue: 7(4), P. 403 - 412

Published: April 12, 2021

Language: Английский

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Molecular mechanisms of early plant pattern-triggered immune signaling

Molecular Cell, Journal Year: 2021, Volume and Issue: 81(17), P. 3449 - 3467

Published: Aug. 16, 2021

Language: Английский

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Coordination between microbiota and root endodermis supports plant mineral nutrient homeostasis

Science, Journal Year: 2020, Volume and Issue: 371(6525)

Published: Nov. 20, 2020

Plant roots and animal guts have evolved specialized cell layers to control mineral nutrient homeostasis. These must tolerate the resident microbiota while keeping homeostatic integrity. Whether how root diffusion barriers in endodermis, which are critical for balance of plants, coordinate with is unknown. We demonstrate that genes controlling endodermal function model plant Arabidopsis thaliana contribute microbiome assembly. characterized a regulatory mechanism differentiation driven by profound effects on Furthermore, we this linked microbiota's capacity repress responses phytohormone abscisic acid root. Our findings establish endodermis as hub coordinating assembly mechanisms.

Language: Английский

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GDSL-domain proteins have key roles in suberin polymerization and degradation

Nature Plants, Journal Year: 2021, Volume and Issue: 7(3), P. 353 - 364

Published: March 8, 2021

Language: Английский

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Suberin plasticity to developmental and exogenous cues is regulated by a set of MYB transcription factors

Proceedings of the National Academy of Sciences, Journal Year: 2021, Volume and Issue: 118(39)

Published: Sept. 22, 2021

Suberin is a hydrophobic biopolymer that can be deposited at the periphery of cells, forming protective barriers against biotic and abiotic stress. In roots, suberin forms lamellae endodermal cells where it plays crucial roles in control water mineral transport. formation highly regulated by developmental environmental cues. However, mechanisms controlling its spatiotemporal regulation are poorly understood. Here, we show independently exogenous signals to fine-tune deposition roots. We found set four MYB transcription factors (MYB41, MYB53, MYB92, MYB93), each which individually these two sufficient promote suberin. Mutation simultaneously through genome editing leads dramatic reduction response both signals. Most mutants analyzed physiological levels also affected another barrier made lignin (Casparian strips) compensatory mechanism. Through functional analysis MYBs, generated plants allowing unbiased investigation function, without accounting for confounding effects due Casparian strip defects, were able unravel specific nutrient homeostasis.

Language: Английский

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Suberin Biosynthesis, Assembly, and Regulation

Plants, Journal Year: 2022, Volume and Issue: 11(4), P. 555 - 555

Published: Feb. 19, 2022

Suberin is a specialized cell wall modifying polymer comprising both phenolic-derived and fatty acid-derived monomers, which deposited in below-ground dermal tissues (epidermis, endodermis, periderm) above-ground periderm (i.e., bark). Suberized cells are largely impermeable to water provide critical protective layer preventing loss pathogen infection. The deposition of suberin part the skin maturation process important tuber crops such as potato can affect storage longevity. Historically, term “suberin” has been used describe polyester aliphatic monomers (fatty acids, ω-hydroxy α,ω-dioic 1-alkanols), hydroxycinnamic glycerol. However, exhaustive alkaline hydrolysis, removes esterified aliphatics phenolics from suberized tissue, reveals core poly(phenolic) macromolecule, depolymerization yields not found polyester. Time course analysis deposition, at transcriptional metabolite levels, supports temporal regulation with being polymerized into domain advance bulk poly(aliphatics) that characterize cells. In present review, we summarize literature describing monomer biosynthesis speculate on aspects assembly. addition, highlight recent advances our understanding how suberization may be regulated, including phytohormone, transcription factor, protein scaffold levels.

Language: Английский

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Paradigms of receptor kinase signaling in plants

Biochemical Journal, Journal Year: 2023, Volume and Issue: 480(12), P. 835 - 854

Published: June 16, 2023

Plant receptor kinases (RKs) function as key plasma-membrane localized receptors in the perception of molecular ligands regulating development and environmental response. Through diverse ligands, RKs regulate various aspects throughout plant life cycle from fertilization to seed set. Thirty years research on has generated a wealth knowledge how perceive activate downstream signaling. In present review, we synthesize this body into five central paradigms RK signaling: (1) are encoded by expanded gene families, largely conserved land evolution; (2) many different kinds through range ectodomain architectures; (3) complexes typically activated co-receptor recruitment; (4) post-translational modifications fulfill roles both activation attenuation RK-mediated signaling; and, (5) common set signaling processes receptor-like cytoplasmic (RLCKs). For each these paradigms, discuss illustrative examples also highlight known exceptions. We conclude presenting critical gaps our understanding function.

Language: Английский

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Modulation of lignin biosynthesis for drought tolerance in plants

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: April 20, 2023

Lignin is a complex polymer that embedded in plant cell walls to provide physical support and water protection. For these reasons, the production of lignin closely linked with adaptation terrestrial regions. In response developmental cues external environmental conditions, plants use an elaborate regulatory network determine timing location biosynthesis. this review, we summarize canonical biosynthetic pathway transcriptional biosynthesis, consisting NAC MYB transcription factors, explain how regulate deposition under drought stress. Moreover, discuss can be applied development tolerant plants.

Language: Английский

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A dirigent protein complex directs lignin polymerization and assembly of the root diffusion barrier

Science, Journal Year: 2023, Volume and Issue: 382(6669), P. 464 - 471

Published: Oct. 26, 2023

Functionally similar to the tight junctions present in animal guts, plant roots have evolved a lignified Casparian strip as an extracellular diffusion barrier endodermis seal root apoplast and maintain nutrient homeostasis. How this is structured has been partially defined, but its lignin polymerization assembly steps remain elusive. Here, we characterize family of dirigent proteins (DPs) essential for both localized required biogenesis cell wall attachment plasma membrane apoplast. We reveal lignification mechanism that requires cooperation between DPs Schengen pathway. Furthermore, demonstrate directly mediate part mechanism.

Language: Английский

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Commensal lifestyle regulated by a negative feedback loop between Arabidopsis ROS and the bacterial T2SS

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 11, 2024

Despite the plant health-promoting effects of microbiota, these assemblages also comprise potentially detrimental microbes. How immunity controls its microbiota to promote health under conditions remains largely unknown. We find that commensal bacteria isolated from healthy Arabidopsis plants trigger diverse patterns reactive oxygen species (ROS) production dependent on immune receptors and completely NADPH oxidase RBOHD selectively inhibited specific commensals, notably Xanthomonas L148. Through random mutagenesis, we L148 gspE, encoding a type II secretion system (T2SS) component, is required for damaging rbohD mutant plants. In planta bacterial transcriptomics reveals suppresses most T2SS gene expression including gspE. colonization protected against pathogen, when gspE was by ROS or mutation. Thus, negative feedback loop between tames leaf turns it into microbe beneficial host.

Language: Английский

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