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Implications of Abscisic Acid in the Drought Stress Tolerance
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Implications of Abscisic Acid in the Drought Stress Tolerance

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 8423

Special Issue Editors

Prof. Dr. Fulai Liu

E-Mail Website
Guest Editor
Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Højbakkegaard Allé 13, 2630 Taastrup, Denmark
Interests: crop water relations; water-saving irrigation; water and nutrients management in crop production
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xiangnan Li

E-Mail Website
Co-Guest Editor
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
Interests: crop eco-physiology; cereal grain quality; crop stress physiology; climate-resilient agriculture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The phytohormone abscisic acid (ABA) is one of the best-known stress signaling molecules in plants. ABA plays critical roles throughout a plant’s life cycle mediating the responses to most of the abiotic stress, especially drought. It has long been recognized that the production of abscisic acid (ABA) in drying roots and its transport to the leaves play a key role in regulating leaf gas exchange and plant water status. Recently, research has focused on the roles and functions of this molecule in drought responses and the possibility of improving plant drought tolerance via chemical manipulation and regulation of its synthesis and metabolism.

This Special Issue covers all aspects of ABA and its derivatives as related to their production and molecular actions in plant drought responses and induction of drought tolerance and other related abiotic stresses. Specific interests include regulation of ABA signaling, the use of ABA-based agrochemicals, and the modulation of ABA biosynthesis and perception via a genetic approach. Original research articles and review papers related to novel aspects of ABA synthesis, metabolism, and applications in a variety of fields will also be included. 

Prof. Dr. Fulai Liu
Guest Editor

Prof. Dr. Xiangnan Li
Co-Guest Editor

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

  • Abscisic acid synthesis
  • Abscisic acid metabolites
  • Drought tolerance
  • Plant water relations
  • ABA-based agrochemicals
  • Crops

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Published Papers (2 papers)

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Research

19 pages, 2922 KiB  
Article
Physiological and Growth Responses of Potato (Solanum Tuberosum L.) to Air Temperature and Relative Humidity under Soil Water Deficits
by Peng Zhang, Xin Yang, Kiril Manevski, Shenglan Li, Zhenhua Wei, Mathias Neumann Andersen and Fulai Liu
Plants 2022, 11(9), 1126; https://doi.org/10.3390/plants11091126 - 21 Apr 2022
Cited by 13 | Viewed by 3613
Abstract
Drought stress often occurs concurrently with heat stress, yet the interacting effect of high vapor pressure deficit (VPD) and soil drying on the physiology of potato plants remains poorly understood. This study aimed to investigate the physiological and growth responses of potatoes to [...] Read more.
Drought stress often occurs concurrently with heat stress, yet the interacting effect of high vapor pressure deficit (VPD) and soil drying on the physiology of potato plants remains poorly understood. This study aimed to investigate the physiological and growth responses of potatoes to progressive soil drying under varied VPDs. Potato plants were grown either in four separate climate-controlled greenhouse cells with different VPD levels (viz., 0.70, 1.06, 1.40, and 2.12 kPa, respectively) or under a rainout shelter in the field. The VPD of each greenhouse cell was caused by two air temperature levels (23 and 30 °C) combined with two relative humidity levels (50 and 70%), and the VPD of the field was natural conditions. Irrigation treatments were commenced three or four weeks after planting in greenhouse cells or fields, respectively. The results indicated that soil water deficits limited leaf gas exchange and shoot dry matter (DMshoot) of plants while increasing the concentration of abscisic acid (ABA) in the leaf and xylem, as well as water use efficiency (WUE) across all VPD levels. High VPD decreased stomatal conductance (gs) but increased transpiration rate (Tr). High VPD increased the threshold of soil water for Tr began to decrease, while the soil water threshold for gs depended on temperature due to the varied ABA response to temperature. High VPD decreased leaf water potential, leaf area, and DMshoot, which exacerbated the inhibition of soil drying to plant growth. Across the well-watered plants in both experiments, negative linear relationships of gs and WUE to VPD and positive linear relations between Tr and VPD were found. The results provide some novel information for developing mechanistic models simulating crop WUE and improving irrigation scheduling in future arid climates. Full article
(This article belongs to the Special Issue Implications of Abscisic Acid in the Drought Stress Tolerance)
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14 pages, 6337 KiB  
Article
Non-Expresser of PR-Genes 1 Positively Regulates Abscisic Acid Signaling in Arabidopsis thaliana
by Irfan Ullah Khan, Akhtar Ali, Shah Zareen, Haris Ali Khan, Chae Jin Lim, Junghoon Park, Jose M. Pardo and Dae-Jin Yun
Plants 2022, 11(6), 815; https://doi.org/10.3390/plants11060815 - 18 Mar 2022
Cited by 6 | Viewed by 3612
Abstract
The plant hormone, abscisic acid (ABA), is not only important for promoting abiotic stress responses but also plays a versatile and crucial role in plant immunity. The pathogen infection-induced dynamic accumulation of ABA mediates the degradation of non-expresser of PR genes 1 (NPR1) [...] Read more.
The plant hormone, abscisic acid (ABA), is not only important for promoting abiotic stress responses but also plays a versatile and crucial role in plant immunity. The pathogen infection-induced dynamic accumulation of ABA mediates the degradation of non-expresser of PR genes 1 (NPR1) through the CUL3NPR3NPR4 proteasome pathway. However, the functional significance of NPR1 degradation by other E3 ligases in response to ABA remains unclear. Here, we report that NPR1 is induced transcriptionally by ABA and that npr1-1 mutation results in ABA insensitivity during seed germination and seedling growth. Mutants lacking NPR1 downregulate the expression of ABA-responsive transcription factors ABA INSENSITIVE4 (ABI4) and ABA INSENSITIVE5 (ABI5), and that of their downstream targets EM6, RAB18, RD26, and RD29B. The npr1-1 mutation also affects the transcriptional activity of WRKY18, which activates WRKY60 in the presence of ABA. Furthermore, NPR1 directly interacts with and is degraded by HOS15, a substrate receptor for the DDB1-CUL4 ubiquitin E3 ligase complex. Collectively, our findings demonstrate that NPR1 acts as a positive regulator of ABA-responsive genes, whereas HOS15 promotes NPR1 degradation in a proteasome-dependent manner. Full article
(This article belongs to the Special Issue Implications of Abscisic Acid in the Drought Stress Tolerance)
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