Inhibition of Arabidopsis stomatal development by plastoquinone oxidation

Zoulias, Nicholas; Rowe, James; Thomson, Emma; Dabrowska, Magdalena; Sutherland, Holly; Degen, Gustaf E; Johnson, Matthew P.; Sedelnikova, Svetlana E.; Hulmes, Georgia E.; Hettema, Ewald H.; Casson, Stuart A.

doi:10.1016/j.cub.2021.10.018

Cited by 13 publications

(8 citation statements)

References 64 publications

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“…AIB is a bHLH TF that was controlled by MYC2, which is the key factors to control JA catabolism ( Zhang et al, 2020 ). AIB was predicted to repress regulate the photosynthetic electron transport chain genes PETC at 3 weeks cold ( Zoulias et al, 2021 ). Negative correlation of expression levels was measured PETC ( Supplementary Figures 9C,D ).…”

Section: Resultsmentioning

confidence: 99%

Dynamic changes in the transcriptome landscape of Arabidopsis thaliana in response to cold stress

Liu

Cai

et al. 2022

Front. Plant Sci.

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Plants must reprogram gene expression to adapt constantly changing environmental temperatures. With the increased occurrence of extremely low temperatures, the negative effects on plants, especially on growth and development, from cold stress are becoming more and more serious. In this research, strand-specific RNA sequencing (ssRNA-seq) was used to explore the dynamic changes in the transcriptome landscape of Arabidopsis thaliana exposed to cold temperatures (4°C) at different times. In total, 7,623 differentially expressed genes (DEGs) exhibited dynamic temporal changes during the cold treatments. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis showed that the DEGs were enriched in cold response, secondary metabolic processes, photosynthesis, glucosinolate biosynthesis, and plant hormone signal transduction pathways. Meanwhile, long non-coding RNAs (lncRNAs) were identified after the assembly of the transcripts, from which 247 differentially expressed lncRNAs (DElncRNAs) and their potential target genes were predicted. 3,621 differentially alternatively spliced (DAS) genes related to RNA splicing and spliceosome were identified, indicating enhanced transcriptome complexity due to the alternative splicing (AS) in the cold. In addition, 739 cold-regulated transcription factors (TFs) belonging to 52 gene families were identified as well. This research analyzed the dynamic changes of the transcriptome landscape in response to cold stress, which reveals more complete transcriptional patterns during short- and long-term cold treatment and provides new insights into functional studies of that how plants are affected by cold stress.

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Section: Resultsmentioning

confidence: 99%

Dynamic changes in the transcriptome landscape of Arabidopsis thaliana in response to cold stress

Liu

Cai

et al. 2022

Front. Plant Sci.

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“…Cotreatment of KI and DCMU counteracted the promoting effects of DCMU on KIN10 nuclear localization, suggesting H 2 O 2 is required for DCMU-induced nuclear localization of KIN10. However, DCMU also has been reported to have no significant effects on H 2 O 2 accumulation 46 – 48 . One possibility for this inconsistency among different studies maybe the different inhibitory effects of DCMU on photosynthesis in different studies.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study reported that plastoquinone oxidation inhibits stomatal development by negatively regulating SPCH and MUTE expression 46 . DCMU is a photosynthesis inhibitor, and can induce the oxidation of plastoquinone.…”

Section: Discussionmentioning

confidence: 99%

Spatially patterned hydrogen peroxide orchestrates stomatal development in Arabidopsis

Wang

Yao

et al. 2022

Nat Commun

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Stomatal pores allow gas exchange between plant and atmosphere. Stomatal development is regulated by multiple intrinsic developmental and environmental signals. Here, we show that spatially patterned hydrogen peroxide (H2O2) plays an essential role in stomatal development. H2O2 is remarkably enriched in meristemoids, which is established by spatial expression patterns of H2O2-scavenging enzyme CAT2 and APX1. SPEECHLESS (SPCH), a master regulator of stomatal development, directly binds to the promoters of CAT2 and APX1 to repress their expression in meristemoid cells. Mutations in CAT2 or APX1 result in an increased stomatal index. Ectopic expression of CAT2 driven by SPCH promoter significantly inhibits the stomatal development. Furthermore, H2O2 activates the energy sensor SnRK1 by inducing the nuclear localization of the catalytic α-subunit KIN10, which stabilizes SPCH to promote stomatal development. Overall, these results demonstrate that the spatial pattern of H2O2 in epidermal leaves is critical for the optimal stomatal development in Arabidopsis.

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“…In addition to the photoreceptor‐mediated mechanisms described, LL also regulates stomata development through a photoreceptor‐independent pathway that involves changes in the photosynthetic electron transport (Zoulias et al ., 2021).…”

Section: Stomata Developmentmentioning

confidence: 99%

Light and temperature regulation of leaf morphogenesis in Arabidopsis

Legris

2023

New Phytologist

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SummaryLeaves are the main photosynthetic organs in plants, and their anatomy is optimized for light interception and gas exchange. Although each species has a characteristic leaf anatomy, which depends on the genotype, leaves also show a large degree of developmental plasticity. Light and temperature regulate leaf development from primordia differentiation to late stages of blade expansion. While the molecular mechanisms of light and temperature signaling have been mostly studied in seedlings, in the latest years, research has focused on leaf development. Here, I will describe the latest work carried out in the environmental regulation of Arabidopsis leaf development, comparing signaling mechanisms between leaves and seedlings, highlighting the new discoveries, and pointing out the most exciting open questions.

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Inhibition of Arabidopsis stomatal development by plastoquinone oxidation

Cited by 13 publications

References 64 publications

Dynamic changes in the transcriptome landscape of Arabidopsis thaliana in response to cold stress

Dynamic changes in the transcriptome landscape of Arabidopsis thaliana in response to cold stress

Spatially patterned hydrogen peroxide orchestrates stomatal development in Arabidopsis

Light and temperature regulation of leaf morphogenesis in Arabidopsis

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