Molecular character of a phosphatase 2C (PP2C) gene relation to stress tolerance in Arabidopsis thaliana

Zhang, Jihong; Li, Xiushan; He, Zhimin; Zhao, Xiaoying; Wang, Qiming; Zhou, Bo; Yu, Dashi; Huang, Xinqun; Tang, Dongying; Guo, Xinhong; Liu, Xuanming

doi:10.1007/s11033-012-2350-0

Cited by 45 publications

(36 citation statements)

References 57 publications

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“…The upregulated genes in all four stress conditions include a NAC TF (AT1G69490 and LOC_Os03G21060), HAI-1 or highly ABA-induced PP2C gene 1 (AT5G59220 and LOC_Os05G38290) and a heavy metal-associated domain containing protein (AT5G52760 and LOC_Os10G38870). Expression of HAI-1 gene was shown to be induced by wound in Arabidopsis [47]. …”

Section: Resultsmentioning

confidence: 99%

Genes and Co-Expression Modules Common to Drought and Bacterial Stress Responses in Arabidopsis and Rice

2013

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Plants are simultaneously exposed to multiple stresses resulting in enormous changes in the molecular landscape within the cell. Identification and characterization of the synergistic and antagonistic components of stress response mechanisms contributing to the cross talk between stresses is of high priority to explore and enhance multiple stress responses. To this end, we performed meta-analysis of drought (abiotic), bacterial (biotic) stress response in rice and Arabidopsis by analyzing a total of 386 microarray samples belonging to 20 microarray studies and identified approximately 3100 and 900 DEGs in rice and Arabidopsis, respectively. About 38.5% (1214) and 28.7% (272) DEGs were common to drought and bacterial stresses in rice and Arabidopsis, respectively. A majority of these common DEGs showed conserved expression status in both stresses. Gene ontology enrichment analysis clearly demarcated the response and regulation of various plant hormones and related biological processes. Fatty acid metabolism and biosynthesis of alkaloids were upregulated and, nitrogen metabolism and photosynthesis was downregulated in both stress conditions. WRKY transcription family genes were highly enriched in all upregulated gene sets while ‘CO-like’ TF family showed inverse relationship of expression between drought and bacterial stresses. Weighted gene co-expression network analysis divided DEG sets into multiple modules that show high co-expression and identified stress specific hub genes with high connectivity. Detection of consensus modules based on DEGs common to drought and bacterial stress revealed 9 and 4 modules in rice and Arabidopsis, respectively, with conserved and reversed co-expression patterns.

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Section: Resultsmentioning

confidence: 99%

Genes and Co-Expression Modules Common to Drought and Bacterial Stress Responses in Arabidopsis and Rice

2013

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“…S6a), evidence for adaptive evolution is found for a homolog of DEFENSIN J1‐2 , known to inhibit the growth of pathogenic fungi by modifying their morphology or physiology, disrupting or killing exogenous cells (Thomma, Cammue, & Thevissen, 2002). Another candidate gene for adaptive evolution on the D. fuchsii branch is a homolog of HAI1 PHOSPHATASE 2C 78 , which is involved in defence response mechanisms by deposition of callose, a polysaccharide produced as a response to wounding, but also in response to drought and salt stress (Zhang et al., 2013). HAI1 is further involved in the pathway of the endoplasmic reticulum response to an accumulation of unfolded or misfolded proteins on stress (Wahyu Indra Duwi, Lee, & Lee, 2013).…”

Section: Discussionmentioning

confidence: 99%

Adaptive sequence evolution is driven by biotic stress in a pair of orchid species (Dactylorhiza) with distinct ecological optima

et al. 2017

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The orchid family is the largest in the angiosperms, but little is known about the molecular basis of the significant variation they exhibit. We investigate here the transcriptomic divergence between two European terrestrial orchids, Dactylorhiza incarnata and Dactylorhiza fuchsii, and integrate these results in the context of their distinct ecologies that we also document. Clear signals of lineage‐specific adaptive evolution of protein‐coding sequences are identified, notably targeting elements of biotic defence, including both physical and chemical adaptations in the context of divergent pools of pathogens and herbivores. In turn, a substantial regulatory divergence between the two species appears linked to adaptation/acclimation to abiotic conditions. Several of the pathways affected by differential expression are also targeted by deviating post‐transcriptional regulation via sRNAs. Finally, D. incarnata appears to suffer from insufficient sRNA control over the activity of RNA‐dependent DNA polymerase, resulting in increased activity of class I transposable elements and, over time, in larger genome size than that of D. fuchsii. The extensive molecular divergence between the two species suggests significant genomic and transcriptomic shock in their hybrids and offers insights into the difficulty of coexistence at the homoploid level. Altogether, biological response to selection, accumulated during the history of these orchids, appears governed by their microenvironmental context, in which biotic and abiotic pressures act synergistically to shape transcriptome structure, expression and regulation.

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“…Under drought stress conditions, ABA accumulates in plants and forms a complex with PYR/PYL. The ABA-PYR/PYL complex inhibits the phosphatase activities of clade A protein phosphatase 2Cs (PP2Cs), leading to the activation of SNF1-related type 2 protein kinases (SnRK2s), which further phosphorylate and activate the downstream substrates such as transcription factors (Schweighofer et al, 2004;Ma et al, 2009;Nakashima et al, 2009;Park et al, 2009;Umezawa et al, 2009;Cutler et al, 2010;Lynch et al, 2012;Rodrigues et al, 2013;Zhang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Reversible Histone H2B Monoubiquitination Fine-Tunes Abscisic Acid Signaling and Drought Response in Rice

Tang

et al. 2019

Molecular Plant

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Histone H2B monoubiquitination (H2Bub1) plays important roles in several physiological and developmental processes, but its roles in the regulation of plant stress responses remain elusive. Here, we report that H2Bub1 is crucially involved in abscisic acid (ABA) signaling and drought response in rice. We found that rice HISTONE MONOUBIQUITINATION2 (OsHUB2), an E3 ligase for H2Bub1, interacted with OsbZIP46, a key transcription factor regulating ABA signaling and drought response in rice. Genetic analyses suggest that OsHUB2, upregulated by drought and ABA, positively modulates ABA sensitivity and drought resistance. The H2Bub1 levels were increased in the target genes of OsbZIP46 under the drought stress and ABA treatments, which were positively correlated with their increased expression levels. Interestingly, MODD, a reported suppressor of ABA signaling and drought resistance by mediating OsbZIP46 deactivation and degradation, could reduce the H2Bub1 levels in the target genes of OsbZIP46 by recruiting a putative deubiquitinase OsOTLD1. Suppression of OsOTLD1 in vivo resulted in increased H2Bub1 levels and expression of OsbZIP46 target genes. Collectively, these findings established an elaborate mechanism of histone monoubiquitination in the fine-turning of ABA signaling and drought response by balancing H2Bub1 deposition and removal.

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Molecular character of a phosphatase 2C (PP2C) gene relation to stress tolerance in Arabidopsis thaliana

Cited by 45 publications

References 57 publications

Genes and Co-Expression Modules Common to Drought and Bacterial Stress Responses in Arabidopsis and Rice

Genes and Co-Expression Modules Common to Drought and Bacterial Stress Responses in Arabidopsis and Rice

Adaptive sequence evolution is driven by biotic stress in a pair of orchid species (Dactylorhiza) with distinct ecological optima

Reversible Histone H2B Monoubiquitination Fine-Tunes Abscisic Acid Signaling and Drought Response in Rice

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