Acetic Acid Treatment Enhances Drought Avoidance in Cassava ( Manihot esculenta  Crantz)

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Abstract

The external application of acetic acid has recently been reported to enhance survival of drought in plants such as Arabidopsis, rapeseed, maize, rice, and wheat, but the effects of acetic acid application on increased drought tolerance in woody plants such as a tropical crop “cassava” remain elusive. A molecular understanding of acetic acid-induced drought avoidance in cassava will contribute to the development of technology that can be used to enhance drought tolerance, without resorting to transgenic technology or advancements in cassava cultivation. In the present study, morphological, physiological, and molecular responses to drought were analyzed in cassava after treatment with acetic acid. Results indicated that the acetic acid-treated cassava plants had a higher level of drought avoidance than water-treated, control plants. Specifically, higher leaf relative water content, and chlorophyll and carotenoid levels were observed as soils dried out during the drought treatment. Leaf temperatures in acetic acid-treated cassava plants were higher relative to leaves on plants pretreated with water and an increase of ABA content was observed in leaves of acetic acid-treated plants, suggesting that stomatal conductance and the transpiration rate in leaves of acetic acid-treated plants decreased to maintain relative water contents and to avoid drought. Transcriptome analysis revealed that acetic acid treatment increased the expression of ABA signaling-related genes, such as OPEN STOMATA 1 (OST1) and protein phosphatase 2C; as well as the drought response and tolerance-related genes, such as the outer membrane tryptophan-rich sensory protein (TSPO), and the heat shock proteins. Collectively, the external application of acetic acid enhances drought avoidance in cassava through the upregulation of ABA signaling pathway genes and several stress responses- and tolerance-related genes. These data support the idea that adjustments of the acetic acid application to plants is useful to enhance drought tolerance, to minimize the growth inhibition in the agricultural field.

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Most cited references 45

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Crop Production under Drought and Heat Stress: Plant Responses and Management Options

Shah Fahad, Ali A. Bajwa, Usman Nazir … (2017)

Abiotic stresses are one of the major constraints to crop production and food security worldwide. The situation has aggravated due to the drastic and rapid changes in global climate. Heat and drought are undoubtedly the two most important stresses having huge impact on growth and productivity of the crops. It is very important to understand the physiological, biochemical, and ecological interventions related to these stresses for better management. A wide range of plant responses to these stresses could be generalized into morphological, physiological, and biochemical responses. Interestingly, this review provides a detailed account of plant responses to heat and drought stresses with special focus on highlighting the commonalities and differences. Crop growth and yields are negatively affected by sub-optimal water supply and abnormal temperatures due to physical damages, physiological disruptions, and biochemical changes. Both these stresses have multi-lateral impacts and therefore, complex in mechanistic action. A better understanding of plant responses to these stresses has pragmatic implication for remedies and management. A comprehensive account of conventional as well as modern approaches to deal with heat and drought stresses have also been presented here. A side-by-side critical discussion on salient responses and management strategies for these two important abiotic stresses provides a unique insight into the phenomena. A holistic approach taking into account the different management options to deal with heat and drought stress simultaneously could be a win-win approach in future.

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Salicylic acid-induced abiotic stress tolerance and underlying mechanisms in plants

M Khan, Mehar Fatma, Tasir Per … (2015)

Abiotic stresses (such as metals/metalloids, salinity, ozone, UV-B radiation, extreme temperatures, and drought) are among the most challenging threats to agricultural system and economic yield of crop plants. These stresses (in isolation and/or combination) induce numerous adverse effects in plants, impair biochemical/physiological and molecular processes, and eventually cause severe reductions in plant growth, development and overall productivity. Phytohormones have been recognized as a strong tool for sustainably alleviating adverse effects of abiotic stresses in crop plants. In particular, the significance of salicylic acid (SA) has been increasingly recognized in improved plant abiotic stress-tolerance via SA-mediated control of major plant-metabolic processes. However, the basic biochemical/physiological and molecular mechanisms that potentially underpin SA-induced plant-tolerance to major abiotic stresses remain least discussed. Based on recent reports, this paper: (a) overviews historical background and biosynthesis of SA under both optimal and stressful environments in plants; (b) critically appraises the role of SA in plants exposed to major abiotic stresses; (c) cross-talks potential mechanisms potentially governing SA-induced plant abiotic stress-tolerance; and finally (d) briefly highlights major aspects so far unexplored in the current context.

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Arabidopsis OST1 protein kinase mediates the regulation of stomatal aperture by abscisic acid and acts upstream of reactive oxygen species production.

Anna-Chiara Mustilli, Sylvain Merlot, Alain Vavasseur … (2002)

During drought, the plant hormone abscisic acid (ABA) triggers stomatal closure, thus reducing water loss. Using infrared thermography, we isolated two allelic Arabidopsis mutants (ost1-1 and ost1-2) impaired in the ability to limit their transpiration upon drought. These recessive ost1 mutations disrupted ABA induction of stomatal closure as well as ABA inhibition of light-induced stomatal opening. By contrast, the ost1 mutations did not affect stomatal regulation by light or CO(2), suggesting that OST1 is involved specifically in ABA signaling. The OST1 gene was isolated by positional cloning and was found to be expressed in stomatal guard cells and vascular tissue. In-gel assays indicated that OST1 is an ABA-activated protein kinase related to the Vicia faba ABA-activated protein kinase (AAPK). Reactive oxygen species (ROS) were shown recently to be an essential intermediate in guard cell ABA signaling. ABA-induced ROS production was disrupted in ost1 guard cells, whereas applied H(2)O(2) or calcium elicited the same degree of stomatal closure in ost1 as in the wild type. These results suggest that OST1 acts in the interval between ABA perception and ROS production. The relative positions of ost1 and the other ABA-insensitive mutations in the ABA signaling network (abi1-1, abi2-1, and gca2) are discussed.

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Author and article information

Contributors

Yoshinori Utsumi: URI : http://loop.frontiersin.org/people/503385/overview

Maho Tanaka: URI : http://loop.frontiersin.org/people/301387/overview

Chien Van Ha: URI : http://loop.frontiersin.org/people/441946/overview

Akihiro Matsui: URI : http://loop.frontiersin.org/people/301431/overview

Sachihiro Matsunaga: URI : http://loop.frontiersin.org/people/278028/overview

Motoaki Seki: URI : http://loop.frontiersin.org/people/166545/overview

Journal

Journal ID (nlm-ta): Front Plant Sci

Journal ID (iso-abbrev): Front Plant Sci

Journal ID (publisher-id): Front. Plant Sci.

Title: Frontiers in Plant Science

Publisher: Frontiers Media S.A.

ISSN (Electronic): 1664-462X

Publication date (Electronic): 24 April 2019

Publication date Collection: 2019

Volume: 10

Electronic Location Identifier: 521

Affiliations

[1] ¹RIKEN Center for Sustainable Resource Science , Yokohama, Japan

[2] ²Core Research for Evolutional Science and Technology, Japan Science and Technology , Kawaguchi, Japan

[3] ³RIKEN Cluster for Pioneering Research , Wako, Japan

[4] ⁴Research Institute for Science and Technology, Tokyo University of Science , Noda, Japan

[5] ⁵Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science , Noda, Japan

[6] ⁶Dormancy and Adaptation Research Unit, RIKEN Center for Sustainable Resource Science , Yokohama, Japan

[7] ⁷Kihara Institute for Biological Research, Yokohama City University , Yokohama, Japan

Author notes

Edited by: Vasileios Fotopoulos, Cyprus University of Technology, Cyprus

Reviewed by: Yasunari Fujita, Japan International Research Center for Agricultural Sciences, Japan; Jitendra Kumar, University of Allahabad, India; Fidele Tugizimana, University of Johannesburg, South Africa

*Correspondence: Motoaki Seki, motoaki.seki@ 123456riken.jp

This article was submitted to Plant Abiotic Stress, a section of the journal Frontiers in Plant Science

Article

DOI: 10.3389/fpls.2019.00521

PMC ID: 6492040

PubMed ID: 31105723

SO-VID: 8addfbc6-a120-4f70-9a7b-258528274145

License:

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

History

Date received : 30 November 2018

Date accepted : 04 April 2019

Page count

Figures: 6, Tables: 1, Equations: 0, References: 50, Pages: 12, Words: 0

Funding

Funded by: Core Research for Evolutional Science and Technology 10.13039/501100003382

Acetic Acid Treatment Enhances Drought Avoidance in Cassava ( Manihot esculenta Crantz)

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Most cited references 45

Crop Production under Drought and Heat Stress: Plant Responses and Management Options

Salicylic acid-induced abiotic stress tolerance and underlying mechanisms in plants

Arabidopsis OST1 protein kinase mediates the regulation of stomatal aperture by abscisic acid and acts upstream of reactive oxygen species production.

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