Regulatory role of phytohormones in plant growth and development

Pal, Priti; Ansari, Shamim Akhtar; Jalil, Syed Uzma; Ansari, Mohammad Israil

doi:10.1016/b978-0-323-91886-2.00016-1

Cited by 5 publications

(12 citation statements)

References 55 publications

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“…16,19,24,26,27,41 However, the results of some studies show that these phytohormones are able to inhibit the ethylene negative deteriorative effects. 7,16,20,24 In addition, these phytohormones have been shown to decease the production and accumulation rate of ROS and free radicals via decreasing cell respiration and natural metabolism rate and enhancing the biosynthesis and accumulation of different antioxidants such as phenolics, anthocyanins and vitamin C, as seen in the present study. 6,22,42 Such a fruit tissue is able to better withstand the adverse postharvest conditions, water loss and ethylene effects.…”

Section: Discussionsupporting

confidence: 66%

“…[36][37][38] These phytohormones are able to enhance net photosynthesis rate by decreasing stomatal resistance and increasing stomatal conductance; enhancing chlorophyll and carotenoid biosynthesis, water and nutrient absorbance and velocity; and decreasing respiration rate. 7 Brassinosteroids have been demonstrated to enhance cell proliferation and expansion rate leading to an increase in crop size and yield. 7 Meanwhile, jasmonates are able to enhance cuticle formation and stomatal closure under water deficit conditions resulting in water retention, which is necessary for cell expansion and tissue growth.…”

Section: Discussionmentioning

confidence: 99%

“…7 Brassinosteroids have been demonstrated to enhance cell proliferation and expansion rate leading to an increase in crop size and yield. 7 Meanwhile, jasmonates are able to enhance cuticle formation and stomatal closure under water deficit conditions resulting in water retention, which is necessary for cell expansion and tissue growth. 5 On the other hand, both phytohormones are able to make a balance between the vegetative growth and reproductive events by activating a diverse range of secondary metabolism routes, including phenolics, and different antioxidant and antistress compound biosynthesis pathways.…”

Section: Discussionmentioning

confidence: 99%

“…40,41 Ethylene is the major factor enhancing the gene expression and enzyme activity of these enzymes. 7 The activity of these enzymes and the progress in natural cell metabolism and senescence also results in the production and accumulation of free radicals and ROS. Direct effects of BRs and JAs with respect to enhancing ethylene production in different plant tissues have been reported.…”

Section: Discussionmentioning

confidence: 99%

“…4 Recently, the use of phytohormones and some phytochemicals has been considered as a promising safe and environmental friendly technique for modulating the quality making processes in food crops. [5][6][7] Among these phytochemicals brassinosteroids (BRs) and jasmonates (JAs) have been shown to have many promising physiological effects on yield, different quality parameters and postharvest life of different horticultural crops such as strawberries, apples, sweet cherries, medlar fruit, kiwifruit, apricot and plum. 5,[8][9][10][11][12][13][14][15] BRs have multifarious roles crops during growth stages including cell enlargement and cell division, color formation, phenolics biosynthesis, antioxidant accumulation, photosynthesis, fruit maturation, development and ripening, and postharvest senescence and deterioration rate.…”

Section: Introductionmentioning

confidence: 99%

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Impact of 24‐epibrassinoliode and methyl jasmonate on quality of Red Delicious apples

Wang,

Asghari,

Zahedipour‐Sheshglani

et al. 2023

J Sci Food Agric

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BACKGROUNDChanges in apple fruit quality indices in response to foliar spray with 24‐epibrassinolide (EBL) at 0 and 1 μmol L−1 and methyl jasmonate (MeJA) at 0 and 0.5 μmol L−1, as well as the combination of these phytohormones, were investigated at harvest and during cold storage.RESULTSBoth phytohormones synergistically enhanced the fruit firmness, specific weight, size, fresh weight, water content, total antioxidant activity, total phenolics, ascorbic acid, total anthocyanins, total soluble solids/titratable acidity ratio and precocity. In addition, the fruit abscission pattern was changed in response to different treatments. Treated fruit exhibited lower weight loss and internal breakdown symptoms and higher total soluble solids index, firmness and phytochemicals during cold storage. A negative correlation was seen between fruit mass, firmness, specific weight, antioxidant activity, total phenolics and vitamin C content with internal breakdown occurrence and weight loss.CONCLUSIONFoliar spray with EBL and MeJA during the growth season is a good environmental friendly and safe method for enhancing the apple fruit different quality parameters, marketability and postharvest life. © 2023 Society of Chemical Industry.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of 24‐epibrassinoliode and methyl jasmonate on quality of Red Delicious apples

Wang,

Asghari,

Zahedipour‐Sheshglani

et al. 2023

J Sci Food Agric

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Role of cytokinins in the regulation the chilling stress response in Triticum aestivum and Triticum spelta

Voytenko,

Shcherbatiuk,

Vasyuk

et al. 2024

Dopov. Nac. akad. nauk Ukr.

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The research is devoted to the study of the effect of chilling (+4 °C, 2 h) on cytokinin homeostasis in 14-day stressed and 21-day restored plants of winter wheat (Triticum aestivum L.) cv. “Podolyanka” and spelt wheat (Triticum spelta L.) cv. “Frankenkorn”. Our study revealed that chilling induces complex changes in the content and distribution of cytokinins in plants that are species- and organ-specifi c. After chilling, the total cytokinin content in the roots of winter wheat cv. “Podolyanka” increased threefold due to the accumulation of trans-zeatin-O-glucoside, trans-zeatin, isopentenyladenine and isopentenyladenosine. Stress did not aff ect trans-zeatin riboside accumulation in roots but induced a fourfold increase in its content in the shoots of winter wheat cv. “Podolyanka”. The total content of cytokinin in the roots of spelt wheat cv. “Frankenkorn” decreased by 1.4 times due to decline in trans-zeatin-O-glucoside and trans-zeatin riboside content, while in shoots, it decreased by 1.2 times owing to reduced trans-zeatin-O-glucoside and isopentenyladenine levels. Prolonged exposure to chilling was manifested by an increase in hormone levels in both 21-day-old species. Our data revealed common and distinct traits in cytokinin homeostasis between winter wheat cv. “Podolyanka” and spelt wheat cv. “Frankenkorn” during rapid adaptation and the recovery period, providing new insights into the response of these species to chilling.

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Foliar Application of Moringa Seed Extract Alone or in Combination with Salicylic Acid Enhanced Growth, Bioactive, and Phytohormone Compositions of Cancer Bush Plants under Heat Stress

Buthelezi,

Mugivhisa,

Gololo

2024

horts

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Cancer bush (Lessertia frutescens L.) is an important medicinal plant that is rich in health beneficial compounds. It is commonly used in traditional medicine and as an ornamental plant. Heat stress is the most threatening abiotic factor restricting plant growth, thus causing crop yield and economic losses worldwide. The application of plant-derived biostimulant is as an innovative and promising approach for improving plant growth and productivity. The study was aimed to investigate the effect of moringa (Moringa oleifera Lam.) seed extract (MSE; 5%) either alone or in combination with salicylic acid (SA; 40 mg/L) on the growth, bioactive, and phytohormone attributes of cancer plants subjected to heat stress (38 °C for 2 hours for 5 days). Plants that were not treated were used as control. Plant pots were arranged in a randomized complete block design (RCBD) for treatments (MSE, SA, and MSE + SA) at 7-day intervals during the experiment. Both MSE and MSE + SA foliar application effectively increased plant growth characteristics and total carotenoids contents, and reduced electrolyte leakage and had no symptoms of wilting compared with SA and control. Plants treated with MSE showed higher number of branches and concentrations of abscisic acid (ABA), jasmonic acid (JA), and indole-3-acetic acid (IAA), and lower superoxide and hydrogen peroxide compared with other treatments and control. Also, plants treated with MSE + SA showed higher total chlorophylls and glutathione concentrations compared with other treatments and control. Overall, the application of MSE either alone or in combination with SA enhanced plant growth and productivity of heat-stressed cancer bush plants.

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Regulatory role of phytohormones in plant growth and development

Cited by 5 publications

References 55 publications

Impact of 24‐epibrassinoliode and methyl jasmonate on quality of Red Delicious apples

Impact of 24‐epibrassinoliode and methyl jasmonate on quality of Red Delicious apples

Role of cytokinins in the regulation the chilling stress response in Triticum aestivum and Triticum spelta

Foliar Application of Moringa Seed Extract Alone or in Combination with Salicylic Acid Enhanced Growth, Bioactive, and Phytohormone Compositions of Cancer Bush Plants under Heat Stress

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