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Sensing, Regulation, and Signalling of Ascorbate in Plants

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (15 January 2023) | Viewed by 6427

Special Issue Editor


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Guest Editor
Plant & Food Research, 412 No. 1 Road, RD 2, Te Puke 3182, New Zealand
Interests: ascorbate; biotechnology; abiotic stress

Special Issue Information

Dear Colleagues,

A great deal of progress has been made in understanding plant ascorbate biosynthesis over the past two decades, and the importance of ascorbate in primary metabolism has been quite well established. The understanding of how ascorbate is regulated in planta has accelerated more recently, but there is still a great deal to be learnt. Key knowledge gaps are in the areas of how ascorbate is sensed and how changes in ascorbate can act in plant signaling and be integrated with other signaling networks, particularly calcium and phytohormone. Likewise, how changes in other signaling networks impact ascorbate is of interest. Therefore, the aim of the Special Issue is to summarize and broaden the knowledge in plant ascorbate regulation, sensing of changes in ascorbate levels, and integration with other signaling processes.

Authors are invited to submit original research and review articles which address the areas discussed above.

 Topics include but are not limited to:

  • Identification and new aspects of ascorbate regulation;
  • Identification and aspects of ascorbate sensing mechanisms;
  • Analysis of perturbation of signaling networks with respect to ascorbate or its transduction into physiological responses;
  • Techniques for the analysis and identification of mediating molecules, pathways, and networks.

Dr. Sean M. Bulley
Guest Editor

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Keywords

  • ascorbate
  • ascorbate sensing
  • redox sensing
  • signaling molecules
  • cellular communication
  • receptor molecules
  • signal transduction
  • signaling network
  • signaling via posttranslational modification

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Published Papers (2 papers)

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Research

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17 pages, 3129 KiB  
Article
Dynamic Changes in Ascorbic Acid Content during Fruit Development and Ripening of Actinidia latifolia (an Ascorbate-Rich Fruit Crop) and the Associated Molecular Mechanisms
by Honghong Deng, Hui Xia, Yuqi Guo, Xinling Liu, Lijin Lin, Jin Wang, Kunfu Xu, Xiulan Lv, Rongping Hu and Dong Liang
Int. J. Mol. Sci. 2022, 23(10), 5808; https://doi.org/10.3390/ijms23105808 - 22 May 2022
Cited by 14 | Viewed by 2597
Abstract
Actinidia latifolia is one of the very few kiwifruit genotypes with extremely high ascorbic acid (AsA) content. However, a transcriptome atlas of this species is lacking. The accumulation of AsA during fruit development and ripening and the associated molecular mechanisms are still poorly [...] Read more.
Actinidia latifolia is one of the very few kiwifruit genotypes with extremely high ascorbic acid (AsA) content. However, a transcriptome atlas of this species is lacking. The accumulation of AsA during fruit development and ripening and the associated molecular mechanisms are still poorly understood. Herein, dynamic changes in AsA content at six different stages of A. latifolia fruit development and ripening were determined. AsA content of A. latifolia fruit reached 1108.76 ± 35.26 mg 100 g−1 FW at full maturity. A high-quality, full-length (FL) transcriptome of A. latifolia was successfully constructed for the first time using third-generation sequencing technology. The transcriptome comprises 326,926 FL non-chimeric reads, 15,505 coding sequences, 2882 transcription factors, 18,797 simple sequence repeats, 3328 long noncoding RNAs, and 231 alternative splicing events. The genes involved in AsA biosynthesis and recycling pathways were identified and compared with those in different kiwifruit genotypes. The correlation between the AsA content and expression levels of key genes in AsA biosynthesis and recycling pathways was revealed. LncRNAs that participate in AsA-related gene expression regulation were also identified. Gene expression patterns in AsA biosynthesis and metabolism exhibited a trend similar to that of AsA accumulation. Overall, this study paves the way for genetic engineering to develop kiwifruits with super-high AsA content. Full article
(This article belongs to the Special Issue Sensing, Regulation, and Signalling of Ascorbate in Plants)
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Review

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17 pages, 868 KiB  
Review
The Functions of Chloroplastic Ascorbate in Vascular Plants and Algae
by Szilvia Z. Tóth
Int. J. Mol. Sci. 2023, 24(3), 2537; https://doi.org/10.3390/ijms24032537 - 28 Jan 2023
Cited by 10 | Viewed by 3033
Abstract
Ascorbate (Asc) is a multifunctional metabolite essential for various cellular processes in plants and animals. The best-known property of Asc is to scavenge reactive oxygen species (ROS), in a highly regulated manner. Besides being an effective antioxidant, Asc also acts as a chaperone [...] Read more.
Ascorbate (Asc) is a multifunctional metabolite essential for various cellular processes in plants and animals. The best-known property of Asc is to scavenge reactive oxygen species (ROS), in a highly regulated manner. Besides being an effective antioxidant, Asc also acts as a chaperone for 2-oxoglutarate-dependent dioxygenases that are involved in the hormone metabolism of plants and the synthesis of various secondary metabolites. Asc also essential for the epigenetic regulation of gene expression, signaling and iron transport. Thus, Asc affects plant growth, development, and stress resistance via various mechanisms. In this review, the intricate relationship between Asc and photosynthesis in plants and algae is summarized in the following major points: (i) regulation of Asc biosynthesis by light, (ii) interaction between photosynthetic and mitochondrial electron transport in relation to Asc biosynthesis, (iii) Asc acting as an alternative electron donor of photosystem II, (iv) Asc inactivating the oxygen-evolving complex, (v) the role of Asc in non-photochemical quenching, and (vi) the role of Asc in ROS management in the chloroplast. The review also discusses differences in the regulation of Asc biosynthesis and the effects of Asc on photosynthesis in algae and vascular plants. Full article
(This article belongs to the Special Issue Sensing, Regulation, and Signalling of Ascorbate in Plants)
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