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Advances in Plant Auxin Biology
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Advances in Plant Auxin Biology

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 2076

Special Issue Editors

Dr. Dong-Wei Di

E-Mail Website
Guest Editor
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No.71 East Beijing Road, Nanjing 210008, China
Interests: auxins; gene expression; molecular cloning; gene regulation; transcription factors; protein–protein interaction
Special Issues, Collections and Topics in MDPI journals
Dr. Verena Kriechbaumer

E-Mail Website
Guest Editor
Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
Interests: auxin biosynthesis; plant endomembrane system; protein biochemistry

Special Issue Information

Dear Colleagues,

Auxin is an important plant hormone that regulates plant growth and development in several ways, such as through cell differentiation, division, elongation, polarization and stress response. The biosynthesis, conjugation, degradation, transport and signaling of auxin in the regulation of plant growth and development and in response to environmental stress has been a hot topic of research in botany. This Special Issue will focus on, but is not limited to, the following topics:

1) The identification and functional validation of key genes for auxin biosynthesis, conjugation, degradation, transport and signaling in different species;
2) Transcriptional regulation, post-transcriptional regulation and protein modification of key genes for auxin biosynthesis, conjugation, degradation, transport and signaling;
3) The interaction of different small molecules and other plant hormones with auxins;
4) The mechanisms by which different environmental stresses (biotic and abiotic) regulate auxin homeostasis, especially local auxin homeostasis;
5) Possible new inhibitors of auxin biosynthesis, conjugation, degradation, transport and signaling pathways, or studies on the mechanisms of known auxin inhibitors.

Dr. Dong-Wei Di
Dr. Verena Kriechbaumer
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • auxin biosynthesis
  • auxin conjugation
  • auxin degradation
  • auxin transport
  • auxin signaling
  • auxin inhibitors
  • response to environmental stress
  • hormone interaction

Published Papers (2 papers)

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Research

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15 pages, 3721 KiB  
Article
All-Year High IAA and ABA Contents in Rhizome Buds May Contribute to Natural Four-Season Shooting in Woody Bamboo Cephalostachyum pingbianense
by Wei Mao, Changyan Bao, Qian Cheng, Ning Liang, Lianchun Wang and Hanqi Yang
Plants 2024, 13(3), 410; https://doi.org/10.3390/plants13030410 - 30 Jan 2024
Viewed by 616
Abstract
To explore the regulation mechanism of endogenous phytohormones on rhizome bud germination in Cephalostachyum pingbianense, the contents of IAA, ABA, GA, and CTK in seven above- and under-ground bamboo structure components were determined using enzyme-linked immunosorbent assays (ELISA). The results showed that [...] Read more.
To explore the regulation mechanism of endogenous phytohormones on rhizome bud germination in Cephalostachyum pingbianense, the contents of IAA, ABA, GA, and CTK in seven above- and under-ground bamboo structure components were determined using enzyme-linked immunosorbent assays (ELISA). The results showed that a higher content of IAA, GA, and CTK all year was found in above-ground components and dormant rhizome buds. Meanwhile, a higher ABA content in young shoots and a lower ABA content in the culm base and dormant rhizome buds were detected during the peak period of shooting. The amounts of emerging shoots and the grown bamboo culms were positively correlated with the content of IAA and the ratio of IAA/ABA and (IAA + CTK + GA)/ABA, while they were negatively correlated with the ratio of CTK/IAA in dormant rhizome buds. The all-year high contents of IAA (19–31 ng/g) and ABA (114–144 ng/g) in rhizome buds, as well as interactions among four hormones, may be the key physiological mechanisms to maintain rhizome bud germination throughout the year in C. pingbianense. As C. pingbianense is a special bamboo species of multi-season shoot sprouting, the above results may supplement scientific data for a comprehensive understanding of physiological mechanisms within the bamboo subfamily. Full article
(This article belongs to the Special Issue Advances in Plant Auxin Biology)
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Review

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14 pages, 1160 KiB  
Review
The Roles of GRETCHEN HAGEN3 (GH3)-Dependent Auxin Conjugation in the Regulation of Plant Development and Stress Adaptation
by Pan Luo, Ting-Ting Li, Wei-Ming Shi, Qi Ma and Dong-Wei Di
Plants 2023, 12(24), 4111; https://doi.org/10.3390/plants12244111 - 8 Dec 2023
Viewed by 1016
Abstract
The precise control of free auxin (indole-3-acetic acid, IAA) gradient, which is orchestrated by biosynthesis, conjugation, degradation, hydrolyzation, and transport, is critical for all aspects of plant growth and development. Of these, the GRETCHEN HAGEN 3 (GH3) acyl acid amido synthetase family, pivotal [...] Read more.
The precise control of free auxin (indole-3-acetic acid, IAA) gradient, which is orchestrated by biosynthesis, conjugation, degradation, hydrolyzation, and transport, is critical for all aspects of plant growth and development. Of these, the GRETCHEN HAGEN 3 (GH3) acyl acid amido synthetase family, pivotal in conjugating IAA with amino acids, has garnered significant interest. Recent advances in understanding GH3-dependent IAA conjugation have positioned GH3 functional elucidation as a hot topic of research. This review aims to consolidate and discuss recent findings on (i) the enzymatic mechanisms driving GH3 activity, (ii) the influence of chemical inhibitor on GH3 function, and (iii) the transcriptional regulation of GH3 and its impact on plant development and stress response. Additionally, we explore the distinct biological functions attributed to IAA-amino acid conjugates. Full article
(This article belongs to the Special Issue Advances in Plant Auxin Biology)
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