Brassinosteroid signaling regulates phosphate starvation‐induced malate secretion in plants

Liu, Tongtong; Deng, Suren; Zhang, Cheng; Yang, Xu; Shi, Lei; Xu, Fangsen; Wang, Sheliang; Wang, Chuang

doi:10.1111/jipb.13443

Cited by 15 publications

(10 citation statements)

References 48 publications

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“…Brassinosteroids (BRs) are plant hormones that promote cell elongation and division, crucial for plant growth and development 43 . Recent studies have implicated brassinosteroid signaling in regulating phosphate starvation-induced malate secretion in plants 44 . Additionally, ABA and ETH signaling were observed to be downregulated in both Fielder and Ardito under low phosphorus stress.…”

Section: Discussionmentioning

confidence: 99%

Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency

Luo,

Usman,

Pang

et al. 2024

Sci Rep

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Phosphorus (P) is a crucial macronutrient for plant growth and development. Basic metabolic processes regulate growth; however, the molecular detail of these pathways under low phosphorous (LP) in wheat is still unclear. This study aims to elucidate the varied regulatory pathways responses to LP stress in wheat genotypes. Phenotypic, physiological, and transcriptome analyses were conducted on Fielder (P efficient) and Ardito (P inefficient) wheat genotypes after four days of normal phosphorous (NP) and LP stress. In response to LP, Fielder outperformed Ardito, displaying higher chlorophyll content-SPAD values (13%), plant height (45%), stem diameter (12%), shoot dry weight (42%), and root biomass (75%). Root structure analysis revealed that Fielder had greater total root length (50%), surface area (56%), volume (15%), and diameter (4%) than Ardito under LP. These findings highlight Fielder’s superior performance and adaptation to LP stress. Transcriptome analysis of wheat genotype roots identified 3029 differentially expressed genes (DEGs) in Fielder and 1430 in Ardito, highlighting LP-induced changes. Key DEGs include acid phosphatases (PAPs), phosphate transporters (PHT1 and PHO1), SPX, and transcription factors (MYB, bHLH, and WRKY). KEGG enrichment analysis revealed key pathways like plant hormones signal transduction, biosynthesis of secondary metabolites, and carbohydrate biosynthesis metabolism. This study unveils crucial genes and the intricate regulatory process in wheat’s response to LP stress, offering genetic insights for enhancing plant P utilization efficiency.

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Section: Discussionmentioning

confidence: 99%

Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency

Luo,

Usman,

Pang

et al. 2024

Sci Rep

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“…Also, l Pi down-regulated BRASSINAZOLE-RESISTANT 1 (BZR1) expression in A. thaliana, a crucial regulator of the brassinosteroid signalling pathway [68]. As it was shown on Nicotiana benthamiana and Oryza sativa, nuclear-localised BZR1 competed with STOP1, thus suppressing ALMT1 activation and malate secretion [69].…”

Section: Stop1/phosphate Interplaymentioning

confidence: 92%

Recent Updates on ALMT Transporters’ Physiology, Regulation, and Molecular Evolution in Plants

Dabravolski,

Isayenkov

2023

Plants

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Aluminium toxicity and phosphorus deficiency in soils are the main interconnected problems of modern agriculture. The aluminium-activated malate transporters (ALMTs) comprise a membrane protein family that demonstrates various physiological functions in plants, such as tolerance to environmental Al3+ and the regulation of stomatal movement. Over the past few decades, the regulation of ALMT family proteins has been intensively studied. In this review, we summarise the current knowledge about this transporter family and assess their involvement in diverse physiological processes and comprehensive regulatory mechanisms. Furthermore, we have conducted a thorough bioinformatic analysis to decipher the functional importance of conserved residues, structural components, and domains. Our phylogenetic analysis has also provided new insights into the molecular evolution of ALMT family proteins, expanding their scope beyond the plant kingdom. Lastly, we have formulated several outstanding questions and research directions to further enhance our understanding of the fundamental role of ALMT proteins and to assess their physiological functions.

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“…In the nucleus, AtSTOP1 interacts with AtMED16 (Mediator 16), a component of the transcriptional co-activation complex, and co-regulates the expression of several downstream genes ( Raya-Gonzalez et al., 2021 ). While AtBZR1 (Brassinazole resistant 1) competitively inhibits the activation of AtALMT1 expression by AtSTOP1 ( Liu et al., 2022 ). In sorghum, SbSTOP1d is self-interacting and interacts with SbSTOP1b, suggesting that SbSTOP1s may function as homodimers or heterodimers ( Huang et al., 2018 ).…”

Section: Regulation Of Stop1 and Stop1-like Proteinsmentioning

confidence: 99%

STOP1 and STOP1-like proteins, key transcription factors to cope with acid soil syndrome

Tian

2023

Front. Plant Sci.

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Acid soil syndrome leads to severe yield reductions in various crops worldwide. In addition to low pH and proton stress, this syndrome includes deficiencies of essential salt-based ions, enrichment of toxic metals such as manganese (Mn) and aluminum (Al), and consequent phosphorus (P) fixation. Plants have evolved mechanisms to cope with soil acidity. In particular, STOP1 (Sensitive to proton rhizotoxicity 1) and its homologs are master transcription factors that have been intensively studied in low pH and Al resistance. Recent studies have identified additional functions of STOP1 in coping with other acid soil barriers: STOP1 regulates plant growth under phosphate (Pi) or potassium (K) limitation, promotes nitrate (NO3-) uptake, confers anoxic tolerance during flooding, and inhibits drought tolerance, suggesting that STOP1 functions as a node for multiple signaling pathways. STOP1 is evolutionarily conserved in a wide range of plant species. This review summarizes the central role of STOP1 and STOP1-like proteins in regulating coexisting stresses in acid soils, outlines the advances in the regulation of STOP1, and highlights the potential of STOP1 and STOP1-like proteins to improve crop production on acid soils.

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Brassinosteroid signaling regulates phosphate starvation‐induced malate secretion in plants

Cited by 15 publications

References 48 publications

Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency

Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency

Recent Updates on ALMT Transporters’ Physiology, Regulation, and Molecular Evolution in Plants

STOP1 and STOP1-like proteins, key transcription factors to cope with acid soil syndrome

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