Transcription Factors Associated with Plant Growth and Senescence

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Genetics, Genomics and Biotechnology".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 3273

Special Issue Editors


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Guest Editor
Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
Interests: plant development; plant-environment interaction; transcription factors; regulation of transcription; phytohormones; hormones signaling/crosstalk/downstream pathways

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Guest Editor
Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Santa Fe, Argentina
Interests: plant biotechnology; plant molecular biology

Special Issue Information

Dear Colleagues,

The control of gene expression is essential for the regulation of growth and developmental processes that shape plants as well as their adaptation to the environment. Transcription factors are key components of transcriptional control that consist of modular domains, which specifically interact with DNA target sequences and recruit proteins to influence transcription events. Their activity is modulated at different levels, for example, by interaction with co-regulators, chromatin regulators or proteins that drive the posttranslational modification of the transcription factor, by redox interconversions, proteolytic processing, or intra- or intercellular movement. Therefore, transcription factors are the center of intricate molecular networks, controlling cell differentiation and growth, tissue and organ development, responses to hormones, environmental factors, and disease resistance. Senescence, the final stage of plant growth and development, is a tightly regulated developmental program affected not only by age but also environmental signals and is also coordinated by transcription factors.

The aim of this Special Issue of Plants is to include articles that illustrate and discuss the structural and functional aspects of plant transcription factors involved in the regulation of plant growth and senescence programs, as well as the molecular mechanisms through which they act. Research papers, short communications, reviews, and perspective papers are all welcome.

Dr. Ivana Viola
Dr. Daniel H. Gonzalez
Guest Editors

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Keywords

  • transcription factor
  • DNA binding specificity
  • chromatin
  • transcriptome/genome analysis
  • gene expression
  • plant development
  • plant growth
  • senescence
  • plant–environment interaction
  • protein turnover/degradation
  • protein–protein interactions
  • hormone signaling/crosstalk/downstream pathways
  • crop improvement

Published Papers (2 papers)

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Research

18 pages, 4416 KiB  
Article
Unraveling the Guardians of Growth: A Comprehensive Analysis of the Aux/IAA and ARF Gene Families in Populus simonii
by Kewei Cai, Qiushuang Zhao, Jinwang Zhang, Hongtao Yuan, Hanxi Li, Lu Han, Xuebo Li, Kailong Li, Tingbo Jiang and Xiyang Zhao
Plants 2023, 12(20), 3566; https://doi.org/10.3390/plants12203566 - 13 Oct 2023
Cited by 4 | Viewed by 1124
Abstract
The auxin/indole-3-acetic acid (Aux/IAA) and auxin response factor (ARF) genes are two crucial gene families in the plant auxin signaling pathway. Nonetheless, there is limited knowledge regarding the Aux/IAA and ARF gene families in Populus simonii. In this [...] Read more.
The auxin/indole-3-acetic acid (Aux/IAA) and auxin response factor (ARF) genes are two crucial gene families in the plant auxin signaling pathway. Nonetheless, there is limited knowledge regarding the Aux/IAA and ARF gene families in Populus simonii. In this study, we first identified 33 putative PsIAAs and 35 PsARFs in the Populus simonii genome. Analysis of chromosomal location showed that the PsIAAs and PsARFs were distributed unevenly across 17 chromosomes, with the greatest abundance observed on chromosomes 2. Furthermore, based on the homology of PsIAAs and PsARFs, two phylogenetic trees were constructed, classifying 33 PsIAAs and 35 PsARFs into three subgroups each. Five pairs of PsIAA genes were identified as the outcome of tandem duplication, but no tandem repeat gene pairs were found in the PsARF family. The expression profiling of PsIAAs and PsARFs revealed that several genes exhibited upregulation in different tissues and under various stress conditions, indicating their potential key roles in plant development and stress responses. The variance in expression patterns of specific PsIAAs and PsARFs was corroborated through RT-qPCR analysis. Most importantly, we instituted that the PsIAA7 gene, functioning as a central hub, exhibits interactions with numerous Aux/IAA and ARF proteins. Furthermore, subcellular localization findings indicate that PsIAA7 functions as a protein localized within the nucleus. To conclude, the in-depth analysis provided in this study will contribute significantly to advancing our knowledge of the roles played by PsIAA and PsARF families in both the development of P. simonii tissue and its responses to stress. The insights gained will serve as a valuable asset for further inquiries into the biological functions of these gene families. Full article
(This article belongs to the Special Issue Transcription Factors Associated with Plant Growth and Senescence)
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16 pages, 7727 KiB  
Article
Comprehensive Genomic Survey, Structural Classification, and Expression Analysis of WRKY Transcription Factor  Family in Rhododendron simsii
by Ziyun Wan, Xueqin Li, Hefeng Cheng, Jing Zhang, Yujia Chen, Yanxia Xu and Songheng Jin
Plants 2022, 11(21), 2967; https://doi.org/10.3390/plants11212967 - 3 Nov 2022
Cited by 3 | Viewed by 1799
Abstract
(1) Rhododendron is one of the top ten traditional flowers in China, with both high ornamental and economic values. However, with the change of the environment, Rhododendron suffers from various biological stresses. The WRKY transcription factor is a member of the most crucial [...] Read more.
(1) Rhododendron is one of the top ten traditional flowers in China, with both high ornamental and economic values. However, with the change of the environment, Rhododendron suffers from various biological stresses. The WRKY transcription factor is a member of the most crucial transcription factor families, which plays an essential regulatory role in a variety of physiological processes and developmental stresses. (2) In this study, 57 RsWRKYs were identified using genome data and found to be randomly distributed on 13 chromosomes. Based on gene structure and phylogenetic relationships, 57 proteins were divided into three groups: I, II, and III. Multiple alignments of RsWRKYs with Arabidopsis thaliana homologous genes revealed that WRKY domains in different groups had different conserved sites. RsWRKYs have a highly conserved domain, WRKYGQK, with three variants, WRKYGKK, WRKYGEK, and WRKYGRK. Furthermore, cis-acting elements analysis revealed that all of the RsWRKYs had stress and plant hormone cis-elements, with figures varying by group. Finally, the expression patterns of nine WRKY genes treated with gibberellin acid (GA), methyl jasmonate (MeJA), heat, and drought in Rhododendron were also measured using quantitative real-time PCR (qRT-PCR). The results showed that the expression levels of the majority of RsWRKY genes changed in response to multiple phytohormones and abiotic stressors. (3) This current study establishes a theoretical basis for future studies on the response of RsWRKY transcription factors to various hormone and abiotic stresses as well as a significant foundation for the breeding of new stress-tolerant Rhododendron varieties. Full article
(This article belongs to the Special Issue Transcription Factors Associated with Plant Growth and Senescence)
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