Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress

Kumar, Kundan; Rao, K. Prabhakara; Sharma, Pallavi; Sinha, Alok

doi:10.1016/j.plaphy.2008.05.014

Cited by 94 publications

(50 citation statements)

References 34 publications

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“…A rapid induction of another rice MAP kinase, OsMSRMK2, was observed within 15 min in response to drought and increased levels of salt (Agrawal et al 2002), suggesting functional roles of the OsMSRMK2 in water stress signaling. Moreover, five of the ten members of the rice MAPKK family have been reported as transcriptionally regulated by drought (Kumar et al 2008).…”

Section: Mapks and Droughtmentioning

confidence: 99%

“…Surprisingly, the mRNA transcripts of the rice OsMSRMK2 are regulated at both high (37°C) and low-moderate (12°C) temperatures (Agrawal et al 2002). OsMKK4 and OsMKK6 are also strongly regulated by cold and heat treatments (Kumar et al 2008). Such contradictory results in opposite conditions could be explained by great functional plasticity of the MAP kinase signalling pathways.…”

Section: Mapks and Temperature Stressesmentioning

confidence: 99%

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MAPK cascades and major abiotic stresses

et al. 2014

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Plants have evolved with complex signaling circuits that operate under multiple conditions and govern numerous cellular functions. Stress signaling in plant cells is a sophisticated network composed of interacting proteins organized into tiered cascades where the function of a molecule is dependent on the interaction and the activation of another. In a linear scheme, the receptors of cell surface sense the stimuli and convey stress signals through specific pathways and downstream phosphorylation events controlled by mitogen-activated protein (MAP) kinases and second messengers, leading to appropriate adaptive responses. The specificity of the pathway is guided by scaffolding proteins and docking domains inside the interacting partners with distinctive structures and functions. The flexibility and the fine-tuned organization of the signaling molecules drive the activated MAP kinases into the appropriate location and connection to control and integrate the information flow. Here, we overview recent findings of the involvement of MAP kinases in major abiotic stresses (drought, cold and temperature fluctuations) and we shed light on the complexity and the specificity of MAP kinase signaling modules.

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Section: Mapks and Droughtmentioning

confidence: 99%

Section: Mapks and Temperature Stressesmentioning

confidence: 99%

MAPK cascades and major abiotic stresses

et al. 2014

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“…10 The genes quantified by qRT-PCR analysis showed similar expression pattern as in DNA chip analysis. OsMKK6 EE plants showed enhanced expression of PR1, Lip9, APX, DREB1, SalT, and WRKY50 suggesting that these plants might be more tolerant to abiotic and biotic stresses.…”

mentioning

confidence: 67%

Genome-wide transcriptome modulation in rice transgenic lines expressing engineered mitogen activated protein kinase kinase 6

Kumar

Sinha²

2014

Plant Signaling & Behavior

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“…For our experiments we used information from the literature to select two time-points for stress durations, short and long, which differed for each stress: cold (6 and 24 h), heat-air (1 and 3 h), heat-water (1 and 3 h), and salt (48 h) (Vogel et al 2005;Hong et al 2008;Kumar et al 2008). We generated small RNA libraries for Illumina sequencing from the leaves of Brachypodium plants subjected to stresses (Supplemental Table S1) and selected smRNAs between 15 and 40 nt in length, which we mapped to the Brachypodium genome (Draper et al 2001;International Brachypodium Initiative 2010;Brkljacic et al 2011).…”

Section: Analysis Of Smrna Transcriptomes In Brachypodium Plants Undementioning

confidence: 99%

Stress-induced endogenous siRNAs targeting regulatory intron sequences in Brachypodium

Wang

Dinwiddie

Lee

et al. 2014

RNA

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Exposure to abiotic stresses triggers global changes in the expression of thousands of eukaryotic genes at the transcriptional and post-transcriptional levels. Small RNA (smRNA) pathways and splicing both function as crucial mechanisms regulating stress-responsive gene expression. However, examples of smRNAs regulating gene expression remain largely limited to effects on mRNA stability, translation, and epigenetic regulation. Also, our understanding of the networks controlling plant gene expression in response to environmental changes, and examples of these regulatory pathways intersecting, remains limited. Here, to investigate the role of smRNAs in stress responses we examined smRNA transcriptomes of Brachypodium distachyon plants subjected to various abiotic stresses. We found that exposure to different abiotic stresses specifically induced a group of novel, endogenous small interfering RNAs (stress-induced, UTR-derived siRNAs, or sutr-siRNAs) that originate from the 3 ′ UTRs of a subset of coding genes. Our bioinformatics analyses predicted that sutr-siRNAs have potential regulatory functions and that over 90% of sutr-siRNAs target intronic regions of many mRNAs in trans. Importantly, a subgroup of these sutrsiRNAs target the important intron regulatory regions, such as branch point sequences, that could affect splicing. Our study indicates that in Brachypodium, sutr-siRNAs may affect splicing by masking or changing accessibility of specific cis-elements through base-pairing interactions to mediate gene expression in response to stresses. We hypothesize that this mode of regulation of gene expression may also serve as a general mechanism for regulation of gene expression in plants and potentially in other eukaryotes.

show abstract

Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress

Cited by 94 publications

References 34 publications

MAPK cascades and major abiotic stresses

MAPK cascades and major abiotic stresses

Genome-wide transcriptome modulation in rice transgenic lines expressing engineered mitogen activated protein kinase kinase 6

Stress-induced endogenous siRNAs targeting regulatory intron sequences in Brachypodium

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