Ethanol treatment enhances drought stress avoidance in cassava (Manihot esculenta Crantz)
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ABSTRACT:
PROVIDER: PRJNA801047 | ENA |
REPOSITORIES: ENA
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Project description:Acetic Acid Treatment Enhances the Drought Avoidance in Cassava (Manihot esculenta Crantz)
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Project description:The external application of ethanol has been reported to enhance salinity, drought and heat stress tolerance in various plant species (Nguyen et al. 2017 ; Bashir et al. in prep.; Matsui et al. in prep). However, the effects of ethanol application on increased drought tolerance in cassava, an important tropical starch crop used for food security and industrial application by a billion people world-wide, remain unknown. In the present study, morphological, physiological, and molecular responses to drought were analyzed in cassava after the treatment with ethanol. The present study showed that the ethanol treatment increased drought avoidance in cassava than the water treatment. Ethanol treatment induced stomatal closure, resulting in the increase of leaf temperature. The decrease in water content of the leaves during drought stress treatment was reduced in ethanol-treated plants compared with control plants. Transcriptome analysis revealed that the expression of drought stress response-related genes and ABA response-related genes was lower in ethanol-treated plants compared with control plants on 12 days after drought treatment.
2025-01-26 | GSE195521 | GEO
Project description:External application of acetic acid has been recently reported to enhance the survival to 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 the 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 the 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 avoid drought. Transcriptome analysis revealed that the acetic acid treatment increased the expression of ABA signaling-related genes, such as OPEN STOMATA 1 (OST1) and protein phosphatase 2C; as well as drought response and tolerance-related genes, such as outer membrane tryptophan-rich sensory protein (TSPO), and 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 response- and tolerance-related genes. These data support the idea that adjustments of the acetic acid application to plants is useful to enhance drought tolerance in order to minimize the growth inhibition in the agricultural field.
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