Impact of plant growth-promoting rhizobacteria (PGPR) on plant nutrition and root characteristics: Current perspective

Plant Stress, Journal Year: 2023, Volume and Issue: 11, P. 100341 - 100341

Published: Dec. 28, 2023

Through a variety of mechanisms, including increasing the amount readily available mineral nutrients, regulating phytohormone levels, and biocontrol phytopathogens, plant growth-promoting rhizobacteria (PGPR) associated with rhizosphere either directly or indirectly stimulates growth development. The establishment, survival, persistence PGPR inoculants are widely acknowledged to be contingent upon these two parameters, in addition intricate network interactions within rhizosphere. In general, soil is moist environment significant amounts carbon that have been degraded harbors large population microbes. rhizo-microbiome crucial agriculture because wide root exudates cell debris attract unique distinct patterns microbial colonization. plays role manufacture regulation extracellular molecules, hormones, secondary metabolites, antibiotics, various signaling chemicals. Additionally, composition influences texture enhancement. Research has shown can used treat plants inoculate promote alters physiology entire plant, which enhances nutrient uptake affects effectiveness activity. specific biochemical processes involved this phenomenon often not well understood. Nevertheless, new studies shed light on mechanisms via by induce responses, both at local systemic levels. Insufficient information regarding impact mechanism molecules metabolic pathways characteristics. Consequently, review will concentrate elucidating identifying essential exert influence root-microbe interactions.

Language: Английский

---

Crop root system plasticity for improved yields in saline soils

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

Published: Feb. 24, 2023

Crop yields must increase to meet the demands of a growing world population. Soil salinization is increasing due impacts climate change, reducing area arable land for crop production. Plant root systems are plastic, and their architecture can be modulated (1) acquire nutrients water growth, (2) respond hostile soil environments. Saline soils inhibit primary growth alter system (RSA) plants. In this review, we explore how adapt salinity, focusing predominately on staple cereal crops wheat, maize, rice, barley, that all play major role in global food security. Cereal classified as glycophytes (salt-sensitive) however salt-tolerance differ both between species within species. past, inherent difficulties associated with visualising measuring traits, breeding strategies have tended focus optimising shoot traits. High-resolution phenotyping techniques now make it possible visualise measure traits systems. A steep, deep cheap ideotype has been proposed nitrogen capture. Changes RSA an adaptive strategy avoid saline whilst nutrient acquisition. review propose new model designing salt-tolerant ideotype. The would exhibit plasticity soils, anatomical changes conserve energy restrict sodium (Na + ) uptake, transport mechanisms reduce amount Na transported leaves. future, combining high-resolution advances genetics will allow us uncover complex such incorporated into programs yield stability soils.

Language: Английский

---

Choreographing root architecture and rhizosphere interactions through synthetic biology

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

Published: Feb. 14, 2024

Abstract Climate change is driving extreme changes to the environment, posing substantial threats global food security and bioenergy. Given direct role of plant roots in mediating plant-environment interactions, engineering form function root systems their associated microbiota may mitigate these effects. Synthetic genetic circuits have enabled sophisticated control gene expression microbial for years a surge advances has heralded extension this approach multicellular species. Targeting tools affect structure, exudation, microbe activity on surfaces provide multiple strategies advancement climate-ready crops.

Language: Английский

---

Genetic basis controlling rice plant architecture and its modification for breeding

Breeding Science, Journal Year: 2023, Volume and Issue: 73(1), P. 3 - 45

Published: Jan. 1, 2023

The shoot and root system architectures are fundamental for crop productivity. During the history of artificial selection domestication post-domestication breeding, architecture rice has significantly changed from its wild ancestor to fulfil requirements in agriculture. We review recent studies on developmental biology by focusing components determining plant architecture; meristems, leaves, tillers, stems, inflorescences roots. also highlight natural variations that affected these structures were utilized cultivars. Importantly, many core regulators identified mutants have been breeding as weak alleles moderately affecting architectures. Given a surge functional genomics genome editing, genetic mechanisms underlying discussed here will provide theoretical basis push further forward not only but other crops their relatives.

Language: Английский

---

Cell wall dynamic changes and signaling during plant lateral root development

Journal of Integrative Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

---

Deconstructing the root system of grasses through an exploration of development, anatomy and function

Plant Cell & Environment, Journal Year: 2022, Volume and Issue: 45(3), P. 602 - 619

Published: Jan. 29, 2022

Abstract Well‐adapted root systems allow plants to grow under resource‐limiting environmental conditions and are important determinants of yield in agricultural systems. Important staple crops such as rice maize belong the family grasses, which develop a complex system that consists an embryonic emerges from seed, postembryonic nodal basal regions shoot after germination. While early seedling establishment is dependent on system, its associated branches, gains importance plant matures will ultimately constitute bulk below‐ground growth. In this review, we aim give overview different types cereal grass systems, explore physiological roles they play by defining their anatomical features, outline genetic networks control development. Through deconstructed view function, provide parts‐list elements function together integrated promote survival crop productivity.

Language: Английский

---

Root phenotypes for the future

Plant Cell & Environment, Journal Year: 2022, Volume and Issue: 45(3), P. 595 - 601

Published: Jan. 29, 2022

Root phenotypes play profoundly important roles supporting plant growth and their adaptive responses to myriad environmental stresses. For example, architecture-scale traits such as root angle can have a major impact on foraging efficiency for immobile mobile soil nutrients phosphate nitrate, respectively (Schneider et al., 2022). Increasing evidence supports the importance of anatomical-scale traits, hair length xylem size, conferring abiotic stress tolerance in crops (Cai 2022; Kohli Cornelis & Ora, 2022), whilst steps are being made dissect molecular-scale mechanisms, ways roots detoxify metals metalloids (Kirk Podar Maathuis, Knowledge these underlying regulatory genes is vital developing future crop varieties better adapted challenges presented by global climate change pressing need support more sustainable agricultural practices. This article protected copyright. All rights reserved.

Language: Английский

---

Polypeptide urea increases rice yield and nitrogen use efficiency through root growth improvement

Field Crops Research, Journal Year: 2024, Volume and Issue: 313, P. 109415 - 109415

Published: May 20, 2024

Language: Английский

---

Integrated Transcriptomic and Metabolomic Analysis of Exogenous NAA Effects on Maize Seedling Root Systems under Potassium Deficiency

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(6), P. 3366 - 3366

Published: March 16, 2024

Auxin plays a crucial role in regulating root growth and development, its distribution pattern under environmental stimuli significantly influences plasticity. Under K deficiency, the interaction between K+ transporters auxin can modulate development. This study compared differences morphology physiological mechanisms of low-K-tolerant maize inbred line 90-21-3 K-sensitive D937 K-deficiency (K+ = 0.2 mM) with exogenous NAA (1-naphthaleneacetic acid, 0.01 treatment. Root systems exhibited higher absorption efficiency. Conversely, seedling roots demonstrated greater plasticity content. In-depth analysis through transcriptomics metabolomics revealed that showed differential responses to K-deficiency. In 90-21-3, upregulation expression transport-related proteins (proton-exporting ATPase potassium transporter) enrichment antioxidant-related functional genes were observed. D937, promoted related intercellular ethylene cation transport Differential metabolite primarily significant flavonoid biosynthesis, tryptophan metabolism, hormone signaling pathways. Integrated transcriptomic metabolomic analyses phenylpropanoid biosynthesis is pathway, core (related peroxidase enzyme) metabolites upregulated 90-21-3. The findings suggest K-deficiency, induces substantial changes roots, pathway playing root's response regulation

Language: Английский

---

CDPK5 and CDPK13 play key roles in acclimation to low oxygen through the control of RBOH-mediated ROS production in rice

PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: unknown

Published: June 7, 2024

CALCIUM-DEPENDENT PROTEIN KINASE (CDPK) stimulates reactive oxygen species (ROS)-dependent signaling by activating RESPIRATORY BURST OXIDASE HOMOLOG (RBOH). The lysigenous aerenchyma is a gas space created cortical cell death that facilitates diffusion from the shoot to root tips. Previously, we showed RBOHH indispensable for induction of formation in rice (Oryza sativa) roots under low-oxygen conditions. Here, CDPK5 and CDPK13 localize plasma membrane where functions. Mutation analysis serine at residues 92 107 revealed these are required CDPK5- CDPK13-mediated activation ROS production. requirement Ca2+ function was confirmed using vitro kinase assays. CRISPR/Cas9-based mutagenesis and/or double knockout almost completely suppressed inducible formation, whereas effects were limited single either or CDPK13. Interestingly, adventitious which widely conserved vascular plants, Our results suggest CDPKs essential acclimation conditions, also many other plant conserving CDPK-targeted phosphorylation sites RBOH homologues.

Language: Английский

---