Unravelling mitochondrial retrograde regulation in the abiotic stress induction of rice <i>ALTERNATIVE OXIDASE 1</i> genes

Li, Chunrong; Liang, Dandan; Juan, Li; Duan, Yongbo; Li, Hao; Yang, Ya-Chun; Qin, Ruiying; Li, Li; Wei, Pengcheng; Yang, Jian‐Bo

doi:10.1111/pce.12013

Cited by 72 publications

(47 citation statements)

References 71 publications

(167 reference statements)

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“…AOX1d even exhibited decreased expression under this stress [35]. In the roots and leaves of rice seedlings, the AOX1a and AOX1b genes were induced by chilling, drought, and high salt, whereas the AOX1c gene was not responsive to these stresses [36,37]. Studies in rice seedlings further showed that the AOX1b gene exhibited a similar expression profile to AOX1a under chilling, drought, and high salt, but the transcript abundance of AOX1b was relatively lower [36,38].…”

Section: Expression Of Aox Genes Under Abiotic Stressesmentioning

confidence: 99%

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Hong¹,

Guan²,

Sun³

et al. 2013

ABBS

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Plants in their natural environment frequently face various abiotic stresses, such as drought, high salinity, and chilling. Plant mitochondria contain an alternative oxidase (AOX), which is encoded by a small family of nuclear genes. AOX genes have been shown to be highly responsive to abiotic stresses. Using transgenic plants with varying levels of AOX expression, it has been confirmed that AOX genes are important for abiotic stress tolerance. Although the roles of AOX under abiotic stresses have been extensively studied and there are several excellent reviews on this topic, the differential expression patterns of the AOX gene family members and the signal regulation of AOX gene(s) under abiotic stresses have not been extensively summarized. Here, we review and discuss the current progress of these two important issues.

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Section: Expression Of Aox Genes Under Abiotic Stressesmentioning

confidence: 99%

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Hong¹,

Guan²,

Sun³

et al. 2013

ABBS

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“…due to progressing failure of NADPH-dependent ROS detoxification systems or as a result of other metabolic changes, such as the drop in adenylate energy charge and acidification of the cytosol (Blokhina et al, 2003), have rarely been considered. Li et al (2013) proposed that superoxide in rice triggers a mitochondrial retrograde response. They induced superoxide production through MV treatment and found that the induction of OsAOX1a as a retrograde marker was much more pronounced than following H 2 O 2 treatment.…”

Section: Which Molecules Qualify As Upstream Mitochondrial Signals? Rmentioning

confidence: 99%

“…Treatment of tobacco cells with Ca 2+ channel blockers (ruthenium red and LaCl 3 ) suppressed the induction of AOX capacity at AA treatment, suggesting a contribution of Ca 2+ to mitochondrial stress signaling (Vanlerberghe et al, 2002). Ruthenium red also partially suppressed AOX1 induction in rice and Arabidopsis at more general stress such as cold, drought, salinity, and hypoxia (Tsuji et al, 2000;Vanderauwera et al, 2012;Li et al, 2013). Conversely, addition of cyclopiazonic acid (an ER calcium channel inhibitor that results in increased cytosolic Ca 2+ concentration in animal cells) intensified AOX1a gene expression induction by salt (Vanderauwera et al, 2012).…”

Section: Camentioning

confidence: 99%

Mitochondrial Energy Signaling and Its Role in the Low-Oxygen Stress Response of Plants

et al. 2018

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ORCID IDs: 0000-0001-5369-7911 (S.W.); 0000-0003-4024-968X (O.V.A.); 0000-0003-0796-8308 (M.S.).Cells of complex organisms typically rely on mitochondria for energy provision. The amount of energy required to sustain cellular activity can vary strongly depending on external conditions. Vice versa, constraints on respiratory activity due to metabolic status or stress insult require mitochondrial signaling to coordinate cellular physiology with the function of the organelle. In this update, we review recent insights into plant mitochondrial energy signaling in the light of their significance to stress acclimation. First, we focus on the characteristic adjustments of the nuclear transcriptome that occur after pharmacological inhibition of the mitochondrial electron transport chain as the output of mitochondrial retrograde signaling. Second, we discuss the proteins that have recently been identified as regulators of the transcript responses and the emerging picture of their action as a signaling network. We then pose the question of how well our current models of inducing mitochondrial dysfunction relate to conditions that plants face naturally. We reason that low-oxygen stress shows striking similarities with electron transport inhibitors with respect to their impact on mitochondrial energy physiology upstream, as well as the cellular transcriptomic response. Finally, we highlight and discuss changes in mitochondrial physiology that are common to both stimuli as candidates for upstream signals. The aim of this update is to better define the physiological context in which mitochondrial signaling operates to provide new directions for future research. RESPONSES TO MITOCHONDRIAL ENERGY SIGNALING AT THE TRANSCRIPT LEVEL

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“…The dissociation curves were analyzed in all amplifications, and each analysis was performed with three biological replicates. The expression of OsAOX1a was determined by qRT-PCR with gene-specific primers (Li et al, 2013) and with Western blot analysis using the anti-FLAG antibody (Cell Signaling).…”

Section: Rna Extraction Quantitative Reverse Transcription-polymerasmentioning

confidence: 99%

“…We previously identified two rice AOX1 genes, OsAOX1a and OsAOX1b, that were strongly responsive to various environmental stresses (Li et al, 2013). Here, we cloned one cold-inducible gene, OsAOX1a, and overexpressed it in Oryza sativa.…”

Section: Introductionmentioning

confidence: 99%

Overexpression of an alternative oxidase gene, OsAOX1a, improves cold tolerance in Oryza sativa L.

Li¹,

Liang²,

Xu³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Low temperature is a major environmental stress in rice cultivating and production. The alternative oxidase 1 (AOX1) gene is potentially important for genetic engineering to increase cold adaptation. However, previous studies related to this effect have mostly focused on the dicot plants Arabidopsis and tobacco, whereas functional research on rice is limited. In this study, we cloned a rice predominant cold-response AOX1 gene, OsAOX1a. Transgenic rice plants with overexpression of OsAOX1a were obtained. We found that OsAOX1a overexpression could strongly enhance the cold growth of seedlings, especially with respect to root extension. However, growth between transgenic and control plants did not differ under normal conditions. Furthermore, the lipid peroxidation and ion leakage rate were determined after cold treatment in transgenic plants. Both factors were reduced by OsAOX1a OsAOX1a overexpression enhanced cold tolerance overexpression, which revealed that OsAOX1a could reduce oxidative damage under cold stress. Taken together, our results suggested that overexpressing OsAOX1a could improve growth performance of rice under cold stress, which might be closely related to the reduction of reactive oxygen species generation and oxidative damage.

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Unravelling mitochondrial retrograde regulation in the abiotic stress induction of rice ALTERNATIVE OXIDASE 1 genes

Cited by 72 publications

References 71 publications

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Mitochondrial Energy Signaling and Its Role in the Low-Oxygen Stress Response of Plants

Overexpression of an alternative oxidase gene, OsAOX1a, improves cold tolerance in Oryza sativa L.

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