New potential roles of StDREB1 and VvWRKY2 transcription factors in potato dormancy and sprouting patterns

Chiab, Nour; Kammoun, Mariem; Nouri-Ellouz, Oumèma; Gargouri-Bouzid, Radhia

doi:10.1016/j.jplph.2023.154077

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…After centrifugation at 10,000 rpm for 10 min at 4°C, the supernatant was collected, and the pellet was re-extracted with the same solvent. The two supernatants were pooled, and the total carotenoid concentration was determined by measuring the absorbance at 450 nm and expressed as µg/g FW (Chiab et al 2023)…”

Section: Carotenoids Content Of Tubersmentioning

confidence: 99%

Effect of the plant growth-promoting bacteria strain Bacillus mojavensis I4 on potato growth, physiology, tuber yield and quality under salt stress conditions

Ghidawi,

Ghazala,

Haddar

et al. 2024

Preprint

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Salinity is one of the major threats to potato. As the first vegetable crop, improving its production under salinity stress is with great interest. In a previous work, Bacillus mojavensis I4 (BmI4) plant growth-promoting (PGP) bacterial strain was isolated from the soil. Since BmI4 showed a growth capacity under salt conditions (10% NaCl) we decided here to evaluate its PGP capacity on potato plants (Spunta and Claustar varieties) grown in the greenhouse in the presence of 100 mM NaCl. Stem elongation and diameter, leaf number, area and organ fresh weights were monitored during 40 days of culture as well as tuber yield, caliber and composition. Our results showed that the inoculation of plantlet roots with BmI4 enhanced plant growth under salinity, particularly for Spunta variety. These beneficial effects were associated with an increase of auxin levels in plants from both varieties. The assessment of H2O2 and malondialdehyde contents revealed that BmI4 inoculation led to reduced oxidation in plants submitted to salinity, via the increase of superoxide dismutase, catalase and peroxidase activities. Moreover, the BmI4 treatment enhanced proline accumulation especially in leaves of Spunta variety. BmI4 inoculated plants from Spunta variety exhibited an early induction of tuberization associated with an increase of tuber yield and caliber under both culture conditions. These findings suggest that inoculation of potato with BmI4 can be promising strategy to improve plant culture in saline areas. Moreover, inoculation improved tuber composition.

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Section: Carotenoids Content Of Tubersmentioning

confidence: 99%

Effect of the plant growth-promoting bacteria strain Bacillus mojavensis I4 on potato growth, physiology, tuber yield and quality under salt stress conditions

Ghidawi,

Ghazala,

Haddar

et al. 2024

Preprint

Self Cite

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Relationship between sprouting, glucoside alkaloids and chlorophyll production in potato tubers (Solanum tuberosum)

Chen,

Guan,

et al. 2024

Journal of Food Composition and Analysis

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Physiological and molecular mechanisms associated with potato tuber dormancy

Dogramaci,

Dobry,

Fortini

et al. 2024

Journal of Experimental Botany

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Tuber dormancy is an important physiological trait that impacts postharvest storage and end use qualities of potatoes. Overall, dormancy regulation of potato tuber is a complex process driven by genetic as well as environmental factors. Elucidation of the molecular and physiological mechanisms that influence different dormancy stages of tuber has wider potato breeding and industry relevant implications. Therefore, the primary objective of this review is to present the current knowledge on the diversity in tuber dormancy traits among wild relatives of potatoes and discuss how genetic and epigenetic factors contribute to the tuber dormancy. Advancements in understanding of key physiological mechanisms involved in tuber dormancy regulations, such as apical dominance, phytohormone metabolism, and oxidative stress responses were also discussed. This review highlights the impacts of common sprout suppressors on the molecular and physiological mechanisms associated with tuber dormancy and other storage qualities. Collectively, the literature suggests that significant changes in expressions of genes associated with cell cycle, phytohormone metabolism, and oxidative stress response influence initiation, maintenance, and termination of dormancy in potato tubers. Commercial sprout suppressors mainly alter the expressions of genes associated with cell cycle and stress responses and suppress sprout growth rather than prolonging the tuber dormancy.

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New potential roles of StDREB1 and VvWRKY2 transcription factors in potato dormancy and sprouting patterns

Cited by 3 publications

References 51 publications

Effect of the plant growth-promoting bacteria strain Bacillus mojavensis I4 on potato growth, physiology, tuber yield and quality under salt stress conditions

Effect of the plant growth-promoting bacteria strain Bacillus mojavensis I4 on potato growth, physiology, tuber yield and quality under salt stress conditions

Relationship between sprouting, glucoside alkaloids and chlorophyll production in potato tubers (Solanum tuberosum)

Physiological and molecular mechanisms associated with potato tuber dormancy

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