Comparison Between the Physiological Role of Carrot Root Extract and β-carotene in Inducing Helianthus annuus L. Drought Tolerance

Daw, Mona Gergis; E, Mohamed El-Sayed; Shamoon, Mervat; El-Le, Safaa Reda

doi:10.3923/ajbs.2019.231.241

Cited by 17 publications

(3 citation statements)

References 39 publications

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“…Results obtained in our experiment, TB showed significantly decreased under drought stress in cultivars (Table 4). These results are the same those determined by Sadiq et al (2018) and Dawood et al (2019). The drought's adverse effects on fresh shoot biomass may be due to reduced photosynthesis rates under drought conditions (Haq et al, 2014).…”

Section: Resultssupporting

confidence: 79%

The Boron Application Effects on Germination and Seedling Parameters of Sorghum Cultivars [Sorghum bicolor (L.) Moench] in Drought

GÖKKAYA¹,

ARSLAN

2023

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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The aim of study was to investigate the effects of boron on germination and seedling parameters of sorghum [Sorghum bicolor (L.) Moench] under drought stress conditions. The experiment was conducted in a factorial trial in a randomized plot design with four replication in a growth chamber. In this study, three different sorghum cultivars were used. Drought conditions were performed at three different levels using PEG (0.-0.4 MPa and -0.8 MPa). Four boron doses (0-5-10-15 mM B) solutions are formed as boric acid (H3BO3). Parameters measured in Gözde 80 were superior to other cultivars under drought stress conditions. The maximum mean germination time, seedling viability index, shoot and root length, shoot and root fresh weight, and total biomass, were detected as 4 days, 74%, 10 cm, 13 cm, 63 mg, 21 mg, and 80 mg, respectively. Differences were noted in the response of different sorghum cultivars to drought stress, and significant decreases were observed as the drought level increased. Low boron applications generally increased germination and seedling parameters compared to control under drought conditions. The boron effects applied to alleviate the drought stress effects have been noticeably positive. Compared to control conditions, the best results were also generally observed in the application of 5 mM B at a drought stress dose of -0.4 MPa. It was concluded that high doses of boron applications caused double stress with drought and were even lower than drought applications alone. It was recorded that due to the reasons listed above, careful attention should be paid to the boron doses to be applied.

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Section: Resultssupporting

confidence: 79%

The Boron Application Effects on Germination and Seedling Parameters of Sorghum Cultivars [Sorghum bicolor (L.) Moench] in Drought

GÖKKAYA¹,

ARSLAN

2023

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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“…The restricted growth seen under drought stress is a morphological response of plants to prevent water loss by reducing the transpiration area [50]. Previous related studies [12,[51][52][53] demonstrated that drought stress reduced the desirable characteristics of mung bean, flax, sunflower, and M. oleifera plants and decreased their water-retaining ability; the authors attributed these alterations to drought-induced diseases and ROS formation [12,54]. Plant height reductions that were observed after exposure to drought conditions (Table 2) may be explained by the decrease in cell elongation, turgor, volume, and cell growth [55].…”

Section: Discussionmentioning

confidence: 99%

Exogenous Application of Melatonin Alleviates Drought Stress in Ranunculus asiaticus by Improving Its Morphophysiological and Biochemical Attributes

Eisa

Honfi²,

Tilly-Mándy³

et al. 2023

Horticulturae

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Melatonin (MT) controls various physiological functions and enhances plant drought tolerance. This study aimed to evaluate the effect of exogenous MT on the morpho-physiological and biochemical attributes of Ranunculus asiaticus under normal and drought conditions. A completely randomized design was used with two factors, drought stress and MT concentration (0, 50, 100, and 200 μM), to assess the effect of foliar application of MT on R. asiaticus seedlings. The experiment was conducted with a total of two groups: the drought stress group and the control group. The foliar application of MT was carried out four times during the study period. The drought stress group exhibited considerably decreased shoot length by 26.0%, leaf number by 31.03%, leaf area by 62.2%, fresh and dry vegetative weights by 34.5% and 52.9%, respectively, total chlorophyll and carotenoid contents by 68.29% and 51.72%, respectively, and relative water content by 7.1%; early emergence of flower stalks was observed within 29 days; increased relative electrolyte leakage by 20.5% compared to well-watered plants. Conversely, the foliar application of MT notably increased growth parameters compared with their no-treatment counterparts. Foliar treatment with 200 µM MT resulted in the most significant growth response in R. asiaticus under normal and drought stress conditions. Moreover, under stressful conditions compared with no treatment, exogenously applied MT induced the appearance of flower buds 21 days early and increased relative water content by 6.4%, proline contents by 32%, and peroxidase activity by 58% while reducing electrolyte leakage by 14.3%. Regarding tolerance index percentages, higher peroxidase and proline contents indicated their suitability for use as markers for drought tolerance, supporting the effective role of exogenous MT in enhancing the adaptability of Ranunculus to drought stress.

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“…(2019) reported that β-carotene priming signi cantly increased fresh weight and shoot height under drought stress in sun ower plants (Dawood et al 2019). Enhancing growth parameters utilizing β-carotene and gallic acid under salt stress is associated with the decline of Na + uptake.…”

Section: Discussionmentioning

confidence: 99%

Improving the Effects of Salt Stress by β -carotene and Gallic Acid Using Increasing Antioxidant Activity and Regulating Ion Uptake in Lepidium Sativum L.

Babaei

Shabani

shahraki

2021

Preprint

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Background: Plant growth, physiological and biochemical processes are severely affected by soil salinity. In the present study, toward investigating the interaction of antioxidants and salt stress in Lepidium sativum seedlings, two antioxidants (β-carotene and gallic acid) were sprayed on the plants. Results: The findings revealed that total dry and fresh weight were adversely affected by 25 mM NaCl salinity stress. Moreover, K+ content decreased while Na+ content increased significantly. The application of β-carotene and gallic acid significantly improved tolerance to salt stress by regulating ion uptake, reducing H2O2 and malondialdehyde (MDA) content, as well as increasing enzymatic antioxidant activity and phenolic, glutathione, and chlorophyll content. Conclusions: Our findings are indicative of β-carotene and gallic acid in the induction of salt tolerance in economically important crops.

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Comparison Between the Physiological Role of Carrot Root Extract and β-carotene in Inducing Helianthus annuus L. Drought Tolerance

Cited by 17 publications

References 39 publications

The Boron Application Effects on Germination and Seedling Parameters of Sorghum Cultivars [Sorghum bicolor (L.) Moench] in Drought

The Boron Application Effects on Germination and Seedling Parameters of Sorghum Cultivars [Sorghum bicolor (L.) Moench] in Drought

Exogenous Application of Melatonin Alleviates Drought Stress in Ranunculus asiaticus by Improving Its Morphophysiological and Biochemical Attributes

Improving the Effects of Salt Stress by β -carotene and Gallic Acid Using Increasing Antioxidant Activity and Regulating Ion Uptake in Lepidium Sativum L.

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