Biochemical and Molecular Effects Induced by Triacontanol in Acquired Tolerance of Rice to Drought Stress

Alharbi, Basmah M.; Abdulmajeed, Awatif M.; Hassan, Hazem

doi:10.3390/genes12081119

Cited by 19 publications

(9 citation statements)

References 83 publications

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“…The spraying of plants with a concentration of 40 mg L -1 achieved the highest average of 38.71 SPAD for the studied trait, and it did not differ significantly from the plants sprayed with a concentration of 50 mg L -1 , which achieved an average of 37.84 SPAD, while these averages decreased when the plants were treated with distilled water (control treatment) with the lowest mean of 33.64 SPAD. The results were in line with what was found [14,15]. The results showed a significant interaction study factor, the results showed that spraying the plants of Se-220 cultivar with the growth regulator TRIA at a concentration of 40 mg L -1 gave the highest average for this trait amounted to 40.87 SPAD, while the plants of the same cultivar when sprayed with distilled water only recorded the lowest average of 32.33 SPAD.…”

Section: Chlorophyll Index (Spad)supporting

confidence: 88%

Response of Vegetative Growth Traits of Several Soybean Cultivars to Spraying with the Growth Regulator Triacontanol (TRIA)

Ahmed

Abdulkafoor

2023

IOP Conf. Ser.: Earth Environ. Sci.

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A field experiment was carried out in the fields of a farmer in the (Al-Boouda) area of Al-Karmah district - Al-Anbar Governorate during the summer season of 2022, to study the effect of spraying with several concentrations of the growth regulator (triacontanol) on the vegetative growth characters of soybean cultivars. The experiment was carried out in split plots arrangement, according to the RCBD design, with three replications. Four concentrations of growth regulator TRIA (0, 40, 50, 60) mg L−1 were allocated to the main plots, while three cultivars of soybean (Lee, Shama, Se-220) were allocated to the sub-plots. The result indicates that the Lee cultivar outperformed in most of the vegetative growth characters over the rest of the other cultivars such as the number of branches (6.91 branches Plant−1), plant height (98.08 cm), leaf area (38.62 cm2 Plant−1) and leaf area index (2.05). While the cultivar Shama was earlier to reached the stage of beginning flowering, and it took the least number of 57.00 days, compared to other cultivars. Whereas the cultivar Se-220 outperformed with highest mean of chlorophyll index in the leaves, reaching 37.43 spad. The results showed that the treatments sprayed with a growth regulator at a high concentration (60 mg L−1) were superior in most of the studied growth characteristics, and their average number of branches was (7.40 branches Plant−1), plant height (110.0 cm), and leaf area and leaf area index (44.87 cm2 Plant−1 and 2.38) respectively, and it needed the least number of days to reach the stage of the beginning of flowering at 58.33 days compared to the other concentrations. The results also indicated that the interaction between the study factors had a significant effect on most of the vegetative growth characters, where the Lee cultivar plant sprayed with a concentration of (60 mg L−1) of the growth regulator achieved the highest averages for several characters, including number of branches, plant height, and leaf area, while the two-way interaction did not affect significantly the number of days from planting to the beginning of flowering and the leaf area index.

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Section: Chlorophyll Index (Spad)supporting

confidence: 88%

Response of Vegetative Growth Traits of Several Soybean Cultivars to Spraying with the Growth Regulator Triacontanol (TRIA)

Ahmed

Abdulkafoor

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…In a previous study [ 26 ] and our study ( Figure 7 I,J), TR foliar application led to markedly increased free proline under a severe water regime. Priming seed treatment with triacontanol has been found to enhance free proline in canola grown under saline conditions [ 61 ].…”

Section: Discussionsupporting

confidence: 72%

“…Our results showed that foliar application of TR at both levels (0.5 and 1 ppm) significantly improved plant growth of strawberry plants under drought stress condition. The improvement in the plant growth could be due to the role of TR in enhancing the photosynthesis process by enhancing chlorophyll synthesis and increasing the number and size of chloroplasts [ 26 , 49 ]. This result is in agreement with previous works in some crops such as mung bean [ 50 ] and sunflower [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

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Unravelling the Effect of Triacontanol in Combating Drought Stress by Improving Growth, Productivity, and Physiological Performance in Strawberry Plants

El-Beltagi

Ismail

Ibrahim

et al. 2022

Plants

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To explore the effects of triacontanol (TR) on drought tolerance of strawberry plants (cv Fertona), two field experiments were carried out to study the effects of three supplementary foliar TR rates (0, 0.5, and 1 ppm) under the following three levels of water irrigation: 11 m3/hectare (40% of water holding capacity (WHC) severe as a drought treatment, 22 m3/hectare (80% of WHC) as moderate drought stress, and normal irrigation with 27 m3/hectare (100% of WHC) server as a control treatment. TR treatments were applied five times after 30 days from transplanting and with 15-day intervals. The results showed that drought stress (40% and 80%) markedly decreased the growth, fruit yield, and chlorophyll reading, as well as the gas exchange parameters (net photosynthetic rate, stomatal conductance, and transpiration rate). Meanwhile, drought stress at a high rate obviously increased antioxidant enzyme activities such as superoxide dismutase (SOD), peroxidase (POX), and catalase (CAT) contents in the leaves of the strawberry plants. The moderate and high drought stress rates enhanced some strawberry fruit quality parameters such as total soluble solids (TSS), vitamin C, and anthocyanin content compared to the control. Additionally, TR increased the activities of SOD, POX, and CAT. TR treatment significantly increased the chlorophyll contents, gas exchange parameters (photosynthetic rate and stomatal conductance), and water use efficiency (WUE). Plant height, fruit weight, and total biomass were increased also via TR application. Total yield per plant was increased 12.7% using 1 ppm of TR compared with the control. In conclusion, our results suggested that TR application could relieve the adverse effects of drought stress on the growth of strawberry plants by enhancing the antioxidant enzymes, photosynthesis rate, and WUE of the leaves.

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“…The process involves a controlled imbibition that allows seeds to progress to the pre-germinative phase [28,29]. In rice cultivation, various priming methods have been employed to alleviate the impact of drought; these include hydropriming [30], chemopriming with hormones [31], or the use of other plant growth regulators [32]. A recent study by Dueñas et al [33] demonstrated that seed treatments with γ-PGA, denatured PGA, and iron pulsing were able to enhance rice germination performance when exposed to polyethylene glycol (PEG)-induced osmotic stress.…”

Section: Introductionmentioning

confidence: 99%

Seed Priming with Poly-Gamma-Glutamic Acid (γ-PGA) Improves Rice Germination Performance under Drought Conditions

Dueñas,

Calvio,

Slamet-Loedin

et al. 2024

Agriculture

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Drought poses a significant threat to global food security, particularly impacting rice cultivation during the germination stage. In this study, a soil-based system that utilizes soil moisture content was used to simulate optimal and stress conditions to assess the effect of the specific seed priming protocols on germination. Eleven rice varieties, representative of indica and japonica subspecies, grown in different ecosystems and having diverse nutrient contents, were treated with water or solutions of either poly-gamma-glutamic acid (γ-PGA) or denatured γ-PGA. Collected data regarding germinability and stress indices revealed different drought sensitivity between japonica and indica subspecies and genotype-specific responses to priming. Particularly, γ-PGA improved germination of highly susceptible indica varieties whereas water soaking was more effective for the moderately sensitive japonica varieties. Integrative analyses evidenced differences between biofortified and non-biofortified rice under γ-PGA treatment, suggesting a possible correlation between γ-PGA efficacy and Zn/Fe seed content. These findings underline that priming strategies should be tailored based on genotype and therefore this factor should be always taken under consideration for future works. The current study provides relevant information for optimizing seed priming techniques to sustain the development of drought-resilient crops as a sustainable strategy to address agricultural resilience and safeguard food security amidst environmental challenges.

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Biochemical and Molecular Effects Induced by Triacontanol in Acquired Tolerance of Rice to Drought Stress

Cited by 19 publications

References 83 publications

Response of Vegetative Growth Traits of Several Soybean Cultivars to Spraying with the Growth Regulator Triacontanol (TRIA)

Response of Vegetative Growth Traits of Several Soybean Cultivars to Spraying with the Growth Regulator Triacontanol (TRIA)

Unravelling the Effect of Triacontanol in Combating Drought Stress by Improving Growth, Productivity, and Physiological Performance in Strawberry Plants

Seed Priming with Poly-Gamma-Glutamic Acid (γ-PGA) Improves Rice Germination Performance under Drought Conditions

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