The molecular mechanism of plasma membrane H+-ATPases in plant responses to abiotic stress

Journal of genetics and genomics/Journal of Genetics and Genomics, Год журнала: 2022, Номер 49(8), С. 715 - 725

Опубликована: Май 30, 2022

Язык: Английский

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The transcription factor MYB110 regulates plant height, lodging resistance, and grain yield in rice

The Plant Cell, Год журнала: 2023, Номер 36(2), С. 298 - 323

Опубликована: Окт. 17, 2023

Abstract The high-yielding Green Revolution varieties of cereal crops are characterized by a semidwarf architecture and lodging resistance. Plant height is tightly regulated the availability phosphate (Pi), yet underlying mechanism remains obscure. Here, we report that rice (Oryza sativa) R2R3-type Myeloblastosis (MYB) transcription factor MYB110 Pi-dependent negative regulator plant height. direct target PHOSPHATE STARVATION RESPONSE 2 (OsPHR2) regulates OsPHR2-mediated inhibition Inactivation increased culm diameter bending resistance, leading to enhanced resistance despite Strikingly, grain yield myb110 mutants was elevated under both high- low-Pi regimes. Two divergent haplotypes based on single nucleotide polymorphisms in putative promoter corresponded with its transcript levels response Pi availability. Thus, fine-tuning expression may be potent strategy for further increasing crop varieties.

Язык: Английский

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Transcriptome analysis of the phosphate starvation response sheds light on strigolactone biosynthesis in rice

The Plant Journal, Год журнала: 2023, Номер 114(2), С. 355 - 370

Опубликована: Фев. 13, 2023

SUMMARY Phosphorus (P) is a major element required for plant growth and development. To cope with P shortage, plants activate local long‐distance signaling pathways, such as an increase in the production exudation of strigolactones (SLs). The role latter mitigating deficiency is, however, still largely unknown. shed light on this, we studied transcriptional response to starvation replenishment wild‐type rice SL mutant, dwarf10 ( d10 ), upon exogenous application synthetic GR24. resulted alterations, upregulation TRANSPORTER , SYG1/PHO81/XPR1 SPX ) VACUOLAR PHOSPHATE EFFLUX . Gene Ontology (GO) analysis genes induced by showed enrichment phospholipid catabolic process phosphatase activity. In enriched sesquiterpenoid production, secondary shoot formation metabolic processes, including lactone biosynthesis. Furthermore, several GR24 treatment shared same GO terms starvation‐induced genes, oxidation reduction, heme binding oxidoreductase activity, hinting at that SLs play reprogramming starvation. co‐expression network uncovered METHYL TRANSFERASE displayed co‐regulation known biosynthetic genes. Functional characterization this gene encodes enzyme catalyzing conversion carlactonoic acid methyl carlactonoate. Our work provides valuable resource further studies crops reveals tool discovery

Язык: Английский

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A spatially concerted epidermal auxin signaling framework steers the root hair foraging response under low nitrogen

Current Biology, Год журнала: 2023, Номер 33(18), С. 3926 - 3941.e5

Опубликована: Сен. 1, 2023

As a major determinant of the nutrient-acquiring root surface, hairs (RHs) provide low-input strategy to enhance nutrient uptake. Although primary and lateral roots exhibit elongation responses under mild nitrogen (N) deficiency, foraging response RHs underlying regulatory mechanisms remain elusive. Employing transcriptomics functional studies revealed framework molecular components composing cascade auxin synthesis, transport, signaling that triggers RH for N acquisition. Through upregulation Tryptophan Aminotransferase Arabidopsis 1 (TAA1) YUCCA8, low increases accumulation in apex. Auxin is then directed differentiation zone via transport machinery, AUXIN TRANSPORTER PROTEIN (AUX1) PIN-FORMED 2 (PIN2). Upon arrival zone, activates transcription factors RESPONSE FACTOR 6 8 (ARF6/8) promote epidermal auxin-inducible transcriptional module ROOT HAIR DEFECTIVE (RHD6)-LOTUS JAPONICA HAIRLESS-LIKE 3 (LRL3) steer N. Our study uncovers spatially defined by RHs, expanding mechanistic hormone-regulated sensing plant roots.

Язык: Английский

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A CYBDOM protein impacts iron homeostasis and primary root growth under phosphate deficiency in Arabidopsis

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Янв. 11, 2024

Arabidopsis primary root growth response to phosphate (Pi) deficiency is mainly controlled by changes in apoplastic iron (Fe). Upon Pi deficiency, Fe deposition the apical meristem activates pathways leading arrest of maintenance and inhibition cell elongation. Here, we report that a member uncharacterized cytochrome b561 DOMON domain (CYBDOM) protein family, named CRR, promotes reduction an ascorbate-dependent manner controls deposition. Under low Pi, crr mutant shows enhanced associated with increased meristematic division. Conversely, CRR overexpression abolishes rendering insensitive Pi. The single hyp1 double mutant, harboring null allele another CYDOM tolerance high-Fe stress upon germination seedling growth. uptake translocation shoot results plants highly sensitive excess. Our identify ferric reductase implicated homeostasis developmental responses abiotic stress, reveal biological role for CYBDOM proteins plants.

Язык: Английский

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The centrality of redox regulation and sensing of reactive oxygen species in abiotic and biotic stress acclimatization

Journal of Experimental Botany, Год журнала: 2024, Номер 75(15), С. 4494 - 4511

Опубликована: Фев. 6, 2024

During land plant evolution, the number of genes encoding for components thiol redox regulatory network and generator systems reactive oxygen species (ROS) expanded, tentatively indicating that they have a role in tailored environmental acclimatization. This hypothesis has been validated both experimentally theoretically during last few decades. Recent developments dynamic redox-sensitive GFP (roGFP)-based vivo sensors H2O2 potential glutathione pool paved way dissecting kinetics changes occur these crucial parameters response to stressors. The versatile cellular sensory system monitors alterations metabolism controls activity target proteins, thereby affects most, if not all, processes ranging from transcription translation metabolism. review uses examples describe redox- ROS-dependent realising appropriate responses diverse stresses. selected case studies concern different challenges, namely excess excitation energy, heavy metal cadmium metalloid arsenic, nitrogen or phosphate shortages as nutrient deficiency, wounding, nematode infestation. Each challenge redox-regulatory ROS network, but our present state knowledge also points toward pressing questions remain open relation regulation

Язык: Английский

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Plant PHR Transcription Factors: Put on A Map

Genes, Год журнала: 2019, Номер 10(12), С. 1018 - 1018

Опубликована: Дек. 6, 2019

The phosphate starvation response (PHR) protein family exhibits the MYB and coiled-coil domains. In plants, within either 5′ untranslated regions (UTRs) or promoter of starvation-induced (PSI) genes are characteristic cis-regulatory elements, namely PHR1 binding sequence (P1BS). most widely studied PHR members, such as AtPHR1 in Arabidopsis thaliana (L.) OsPHR2 Oryza sativa (L.), may activate gene expression a broad range PSI by to elements (Pi) dependent manner. Pi signaling, transcription factors (TFs) can be selectively activated deactivated other proteins execute final step signal transduction. Several new have been associated with AtPHR1/OsPHR2 signaling cascade last few years. While TF transcriptional role has intensively, here we highlight recent findings upstream molecular components pathways that interfere mode action plants. Detailed information about regulation itself its events reviewed.

Язык: Английский

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The dynamic nature and regulation of the root clock

Development, Год журнала: 2020, Номер 147(3)

Опубликована: Фев. 1, 2020

ABSTRACT Plants explore the soil by continuously expanding their root system, a process that depends on production of lateral roots (LRs). Sites where LRs can be produced are specified in primary axis through pre-patterning mechanism, determined biological clock is coordinated temporal signals and positional cues. This ‘root clock’ generates an oscillatory signal translated into developmental cue to specify set founder cells for LR formation. In this Review, we summarize recent findings shed light mechanisms underlying discuss how periodic contributes conversion primordia. We also provide overview phases may influenced endogenous factors, such as plant hormone auxin, exogenous environmental Finally, additional aspects root-branching act independently clock.

Язык: Английский

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Lateral root formation and nutrients: nitrogen in the spotlight

PLANT PHYSIOLOGY, Год журнала: 2021, Номер 187(3), С. 1104 - 1116

Опубликована: Март 23, 2021

Lateral roots are important to forage for nutrients due their ability increase the uptake area of a root system. Hence, it comes as no surprise that lateral formation is affected by or nutrient starvation, and such contributes system plasticity. Understanding molecular mechanisms regulating adaptation dynamics toward availability useful optimize plant use efficiency. There at present profound, though still evolving, knowledge on pathways. Here, we aimed review intersection with signaling pathways give an update regulation development nutrients, particular focus nitrogen. Remarkably, most not clear how controlled. Only nitrogen, one dominant in control formation, crosstalk multiple key signals determining clearly shown. In this update, first general overview current affect followed deeper discussion nitrogen act different root-mediating which recent studies yield insights.

Язык: Английский

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The phosphate language of fungi

Trends in Microbiology, Год журнала: 2021, Номер 30(4), С. 338 - 349

Опубликована: Авг. 31, 2021

Язык: Английский

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