SENESCENCE-SUPPRESSED PROTEIN PHOSPHATASE Directly Interacts with the Cytoplasmic Domain of SENESCENCE-ASSOCIATED RECEPTOR-LIKE KINASE and Negatively Regulates Leaf Senescence in Arabidopsis

Xiao, Dong; Cui, Yanjiao; Xu, Fan; Xu, Xin; Gao, Guan Xiao; Wang, Ya Xin; Guo, Zhao; Wang, Dan; Wang, Ning Ning

doi:10.1104/pp.15.01112

Cited by 57 publications

(57 citation statements)

References 84 publications

(90 reference statements)

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“…In addition, we observed an upregulation of SENESCENCE-SUPPRESSED PROTEIN PHOSPHATASE (SSPP) and a downregulation of the transcription factor RD26 as well as of SENESCENCE-ASSOCIATED GENE 13 (SAG13) in SF-primed and primed/stressed plants (Table 1). SSPP functions in sustaining leaf longevity and its overexpression significantly delays leaf senescence in Arabidopsis [53]. The transcription factor RD26 (ANAC072) is a positive regulator of stress-and darkness-induced senescence [54,55].…”

Section: Annotation Of Genes Induced By Sf For Oxidative Stress Protementioning

confidence: 99%

A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress

Omidbakhshfard

Sujeeth

Gupta

et al. 2020

IJMS

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Abiotic stresses cause oxidative damage in plants. Here, we demonstrate that foliar application of an extract from the seaweed Ascophyllum nodosum, SuperFifty (SF), largely prevents paraquat (PQ)-induced oxidative stress in Arabidopsis thaliana. While PQ-stressed plants develop necrotic lesions, plants pre-treated with SF (i.e., primed plants) were unaffected by PQ. Transcriptome analysis revealed induction of reactive oxygen species (ROS) marker genes, genes involved in ROS-induced programmed cell death, and autophagy-related genes after PQ treatment. These changes did not occur in PQ-stressed plants primed with SF. In contrast, upregulation of several carbohydrate metabolism genes, growth, and hormone signaling as well as antioxidant-related genes were specific to SF-primed plants. Metabolomic analyses revealed accumulation of the stress-protective metabolite maltose and the tricarboxylic acid cycle intermediates fumarate and malate in SF-primed plants. Lipidome analysis indicated that those lipids associated with oxidative stress-induced cell death and chloroplast degradation, such as triacylglycerols (TAGs), declined upon SF priming. Our study demonstrated that SF confers tolerance to PQ-induced oxidative stress in A. thaliana, an effect achieved by modulating a range of processes at the transcriptomic, metabolic, and lipid levels.

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Section: Annotation Of Genes Induced By Sf For Oxidative Stress Protementioning

confidence: 99%

A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress

Omidbakhshfard

Sujeeth

Gupta

et al. 2020

IJMS

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“…Protein kinases (PKs) are essential signaling regulators of senescence [44]. We identified 40 PKs in the rose proteome of which the abundance of 24 was increased while that of 16 was decreased in stage 5 petals compared to stage 3 petals (Table S7).…”

Section: Transcription Factors and Protein Kinasesmentioning

confidence: 99%

Proteome and Ubiquitome Changes during Rose Petal Senescence

Lü

Fan

et al. 2019

IJMS

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Petal senescence involves numerous programmed changes in biological and biochemical processes. Ubiquitination plays a critical role in protein degradation, a hallmark of organ senescence. Therefore, we investigated changes in the proteome and ubiquitome of senescing rose (Rosa hybrida) petals to better understand their involvement in petal senescence. Of 3859 proteins quantified in senescing petals, 1198 were upregulated, and 726 were downregulated during senescence. We identified 2208 ubiquitinated sites, including 384 with increased ubiquitination in 298 proteins and 1035 with decreased ubiquitination in 674 proteins. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses revealed that proteins related to peptidases in proteolysis and autophagy pathways were enriched in the proteome, suggesting that protein degradation and autophagy play important roles in petal senescence. In addition, many transporter proteins accumulated in senescing petals, and several transport processes were enriched in the ubiquitome, indicating that transport of substances is associated with petal senescence and regulated by ubiquitination. Moreover, several components of the brassinosteroid (BR) biosynthesis and signaling pathways were significantly altered at the protein and ubiquitination levels, implying that BR plays an important role in petal senescence. Our data provide a comprehensive view of rose petal senescence at the posttranslational level.

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“…Senescence is the final stage of leaf development which occurs in response to internal and external signals [196]. Leaf senescence plays important roles in plant development by recycling nutrients to vigorously growing organs [197][198]. The concentrations of 58 elements including major, minor and rare earth elements increased during the course of beech leaf senescence and decomposition in a Swedish beech forest [199].…”

Section: Senescence Delaymentioning

confidence: 99%

Selenium in the Soil-Plant Environment: A Review

Saha¹

2017

IJAAS

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Selenium (Se) exhibits a "double-edged" behavior in animal and human nutrition. It is a micronutrient required in low concentrations by animals and humans, but toxic at high concentrations. Selenium deficiency has been associated with cancer and other health problems. Selenium requirements are commonly met through soils and plants such as wheat, rice, vegetables and maize in many countries. Selenium concentration in the soil generally ranges from 0.01-2.0 mg kg-1 but seleniferous soils usually contain more than 5 mg kg-1. Seleniferous soils have been reported in Ireland, China, India and USA. Weathering of parent rocks and atmospheric deposition of volcanic plumes are natural processes increasing Se levels in the environment. Anthropogenic sources of Se include irrigation, fertilizer use, sewage sludge and farmyard manure applications, coal combustion and crude oil processing, mining, smelting and waste incineration. Mobility of Se in the soil-plant system largely depends on its speciation and bioavailability in soil which is controlled by pH and redox potential. Plant uptake of Se varies with plant species and Se bioavailability in the soil. The uptake, translocation, transformation, metabolism, and functions of Se within the plant are further discussed in the paper. The release of Se in soils and subsequent uptake by plants has implications for meeting Se requirements in animals and humans.

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SENESCENCE-SUPPRESSED PROTEIN PHOSPHATASE Directly Interacts with the Cytoplasmic Domain of SENESCENCE-ASSOCIATED RECEPTOR-LIKE KINASE and Negatively Regulates Leaf Senescence in Arabidopsis

Cited by 57 publications

References 84 publications

A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress

A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress

Proteome and Ubiquitome Changes during Rose Petal Senescence

Selenium in the Soil-Plant Environment: A Review

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