The cytosolic thiol peroxidase PRXIIB is an intracellular sensor for H2O2 that regulates plant immunity through a redox relay

Bi, Guozhi; Hu, Man; Fu, Ling; Zhang, Xiaojuan; Zuo, Jianru; Li, Jiayang; Yang, Jing; Zhou, Jian‐Min

doi:10.1038/s41477-022-01252-5

Cited by 53 publications

(31 citation statements)

References 73 publications

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“…Different from SOD, POD was strongly induced in Tc3d, and POD-related DEGs were also highly expressed, indicating its crucial role in the resistance triggered by AMF. Bi et al (2022) also found that the cytosolic thiol peroxidase PRXIIB is an intracellular sensor for H 2 O 2 that can regulate plant immunity against Pseudomonas syringae in Arabidopsis thaliana, in which PRXIIB conjugates via Cys51 with the type 2C protein phosphatase ABA insensitive 2 (ABI2), subsequently transducing H 2 O 2 signal to ABI2. Moreover, the activity of CAT showed a similar pattern with that of POD.…”

Section: Figurementioning

confidence: 97%

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Chen

Ye²,

Sun³

et al. 2023

Front. Plant Sci.

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Tea has been gaining increasing popularity all over the world in recent years, and its yield and quality depend on the growth and development of tea plants [Camellia sinensis (L.) Kuntze] in various environments. Nowadays, biotic stress and extreme weather, such as high temperature, drought, waterlogging, pests, and diseases, bring about much pressure on the production of tea with high quality. Wherein anthracnose, which is the most common and serious disease of tea plants, has earned more and more attention, as its control mainly relies on chemical pesticides. Arbuscular mycorrhizal fungi (AMF), forming symbiosis with most terrestrial plants, participate in plant resistance against the anthracnose disease, which was found by previous studies in a few herbaceous plants. However, there are a few studies about arbuscular mycorrhizal (AM) fungal regulation of the resistance to the anthracnose pathogen in woody plants so far. In this paper, we investigated the effect of AMF on the development of anthracnose caused by Colletotrichum camelliae and tried to decipher the pertinent mechanism through transcriptome analysis. Results showed that inoculating AMF significantly reduced the damage of anthracnose on tea seedlings by reducing the lesion area by 35.29% compared to that of the control. The content of superoxide anion and activities of catalase and peroxidase significantly increased (P < 0.05) in mycorrhizal treatment in response to the pathogen with 1.23, 2.00, and 1.39 times higher, respectively, than those in the control. Pathways of plant hormone signal transduction, mitogen-activated protein kinase (MAPK) signaling, and phenylpropanoid biosynthesis might play roles in this regulation according to the transcriptomic results. Further redundancy analysis (RDA) and partial least squares structural equation modeling (PLS-SEM) analysis found that plant hormones, such as auxin and ethylene, and the antioxidant system (especially peroxidase) were of great importance in the AM fungal alleviation of anthracnose. Our results preliminarily indicated the mechanisms of enhanced resistance in mycorrhizal tea seedlings to the anthracnose pathogen and provided a theoretical foundation for the application of AMF as one of the biological control methods in tea plantations.

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Section: Figurementioning

confidence: 97%

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Chen

Ye²,

Sun³

et al. 2023

Front. Plant Sci.

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“…In contrast, S-nitrosation inhibits the kinase activity of SnRK2.6, which may desensitize ABA signaling in order to coordinate plant growth and stress response (Figure 4) [57]. Furthermore, the activity of protein phosphatases ABI1 and ABI2, negative regulators of SnRK2, is also dependent on its redox status, which is controlled by thiol peroxidases such as GPX3 and type II peroxiredoxin [71,72]. In addition, BIN2 is found to phosphorylate and stabilize ABI5 during ABA-mediated seed germination [73].…”

Section: Abscisic Acid Signaling: Abi4 Abi5 and Snrk26mentioning

confidence: 99%

“…As already mentioned, rice GPX1 was reported to sense H2O2 and oxidized the TF OsbZIP68 [78]. In addition, peroxiredoxin and quiescin sulfhydryl oxidase homolog (QSOX1) serve as redox sensors and transducers that regulate plant stress response [72,96]. Moreover, transnitrosation/transpersulfidation events were discovered recently [17,22], raising the possibility that some proteins might also be regulated in an enzyme-dependent manner via "transferase" reactions.…”

Section: Vnd7mentioning

confidence: 99%

Cysteine thiol-based post-translational modification: What do we know about transcription factors?

Zhou

Huang

Willems

et al. 2023

Trends in Plant Science

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“…This discrepancy may be because ARR2-regulated immunity-triggered ROS synthesis is mediated through peroxidases (PRX33 and PRX34) rather than drought-responsive Rbohs (Arnaud et al, 2017). H 2 O 2 directly inactivates the PP2C enzymes that function in ABA signaling (Bi et al, 2022;Meinhard et al, 2002;Meinhard & Grill, 2001) (Figure 6). On the other hand, Murata et al (2001) demonstrated that ABA-induced ROS production in guard cells was impaired in the clade-A PP2C mutant abi1-1, whereas abi2-1 impaired H 2 O 2 -induced stomatal closing, although both abi1-1 and abi2-1 function in ABA signaling in Arabidopsis (Pei et al, 1997;Strizhov et al, 1997).…”

Section: The Modulation Of Ros Homeostasis In Guard Cellsmentioning

confidence: 99%

Jasmonic acid enhances osmotic stress responses by MYC2‐mediated inhibition of protein phosphatase 2C1 and response regulators 26 transcription factor in tomato

et al. 2022

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SUMMARY The jasmonic acid (JA) signaling pathway is involved in the plant response to drought stress. JA and other hormones synergistically regulate the drought response in plants. However, the molecular mechanism underlying this synergism remains poorly defined. In the present study, transcriptome analyses of guard cells and quantitative PCR experiments revealed that MYC2 negatively regulated the negative regulator of ABA signaling, SlPP2C1, and the type‐B response regulator in the cytokinin pathway, SlRR26, and this negative regulation was direct. SlRR26 overexpression reduced drought tolerance in transgenic tomatoes, whereas slrr26cr lines were more tolerant to drought. SlRR26 negatively modulated reactive oxygen species levels in stomata and stomatal closure through RobhB. Moreover, SlRR26 overexpression counteracted JA‐mediated stomatal closure, suggesting that SlRR26 played a negative role in the JA‐mediated drought response. These findings suggest that MYC2 plays a key role in JA‐regulated stomatal closure under drought stress by inhibiting SlPP2C1 and SlRR26.

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The cytosolic thiol peroxidase PRXIIB is an intracellular sensor for H2O2 that regulates plant immunity through a redox relay

Cited by 53 publications

References 73 publications

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Arbuscular mycorrhizal fungus alleviates anthracnose disease in tea seedlings

Cysteine thiol-based post-translational modification: What do we know about transcription factors?

Jasmonic acid enhances osmotic stress responses by MYC2‐mediated inhibition of protein phosphatase 2C1 and response regulators 26 transcription factor in tomato

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