Effects of Polyamines on Vegetative Characteristics, Growth, Flowering and Yield of Strawberry ('Paros' and 'Selva')

Movahed, Nooshin; Eshghi, Saeid; Tafazoli, E.; Jamali, Babak

doi:10.17660/actahortic.2012.926.39

Cited by 9 publications

(6 citation statements)

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“…2). The result is in agreement with the finding of Movahed et al (2012) in strawberry applied by 0.5, 1, and 1.5 mM Put. The growth improvement might be due to the fact that Put acts as a hormonal secondmessenger of cell proliferation and differentiation in many processes (Steiner et al, 2007).…”

Section: Variable Measurementssupporting

confidence: 93%

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Effects of Exogenous Putrescine on Mycorrhiza, Root System Architecture, and Physiological Traits of Glomus mosseae-Colonized Trifoliate Orange Seedlings

Zou

Liu

et al. 2012

Not Bot Hort Agrobot Cluj

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Putresince (Put) as one of the important polyamines (PAs) has been identified to regulate mycorrhizal development of citrus plants. The present study was to screen an efficient concentration of Put application at the range of 0.05-1 mM on the trifoliate orange (Poncirus trifoliata) seedlings colonized by Glomus mosseae, in terms of growth, root system architecture, and chlorophyll and carbohydrate contents. Compared to the non-Put treatment, all the Put treatments, especially 0.05 mM Put, significantly increased mycorrhizal colonization of tap root in addition to first, second, and third order lateral roots. The mycorrhizal seedlings treated by 0.05, 0.1, and 1 mM Put showed greater growth (stem diameter, height, leaf number, and fresh mass) and root morphological properties ( tap root length, projected and surface areas, and volume) and higher numbers of first, second, and third order lateral roots. Bio-molecules like chlorophyll a, total chlorophyll, and carotenoid contents of the seedlings were significantly increased by the Put treatments at 0.05-1 mM. All exogenous Put application at the range of 0.05-1 mM significantly decreased sucrose contents but increased glucose contents of leaves and roots. This study suggests that exogenous Put can significantly improve growth performance and root system architecture, besides changes in physiological traits of AMF seedlings. The 0.05 mM concentration of Put showed the best effects.

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Section: Variable Measurementssupporting

confidence: 93%

“…Note: Means ± SE (n=3) followed by the same letter within a column are not significant difference between various treatments at 5% level and development (Movahed et al, 2012;Scholten, 1998). Significant effect of Put on the growth traits of trifoliate orange ranked in the order of Put-0.05 > Put-1.0 > Put-0.1 > Put-0.5 (Tab.…”

Section: Variable Measurementsmentioning

confidence: 99%

Effects of Exogenous Putrescine on Mycorrhiza, Root System Architecture, and Physiological Traits of Glomus mosseae-Colonized Trifoliate Orange Seedlings

Zou

Liu

et al. 2012

Not Bot Hort Agrobot Cluj

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“…Additionally, the GhSAMDC1 overexpression in tobacco significantly increased leaf area by 25.9–36.6% and plant height by 15.0–27.0% compared to the WT (Zhu et al, 2020). Similarly, exogenous Spd spraying was reported to increase flower number per truss and yield per plant in strawberries (Movahed et al, 2011); it also improved style length, long‐styled flowers, fruit count, yield in eggplant (Rezaeian et al, 2022). These results collectively suggest that Spd positively regulates various plant phenotypes.…”

Section: Discussionmentioning

confidence: 98%

Chinese cherry CpMYB44‐CpSPDS2 module regulates spermidine content and florescence in tobacco

Deng,

Hou,

Wen

et al. 2024

Physiologia Plantarum

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The flower bud differentiation plays a crucial role in cherry yield and quality. In a preliminary study, we revealed the promotion of spermidine (Spd) in bud differentiation and quality. However, the molecular mechanism underlying Spd regulating cherry bud differentiation remains unclear. To address this research gap, we cloned CpSPDS2, a gene that encodes Spd synthase and is highly expressed in whole flowers and pistils of the Chinese cherry (cv. ‘Manaohong’). Furthermore, an overexpression vector with this gene was constructed to transform tobacco plants. The findings demonstrated that transgenic lines exhibited higher Spd content, an earlier flowering time by 6 d, and more lateral buds and flowers than wild‐type lines. Additionally, yeast one‐hybrid assays and two‐luciferase experiments confirmed that the R2R3‐MYB transcription factor (CpMYB44) directly binds to and activates the CpSPDS2 promoter transcription. It is indicated that CpMYB44 promotes Spd accumulation via regulating CpSPDS2 expression, thus accelerating the flower growth. This research provides a basis for resolving the molecular mechanism of CpSPDS2 involved in cherry bud differentiation.

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“…In addition to auxins and cytokinins, there is accumulating evidence that PAs also play an important regulatory role in plant growth and shoot system architecture, as they do in other horticultural crops [132,133]. PAs and/or PA-conjugates have been analyzed with respect to plant growth and shoot system architecture in intact plants and in in vitro systems.…”

Section: Role Of Pas In the Plant Growth And Shoot System Architecturmentioning

confidence: 99%

Citrus Polyamines: Structure, Biosynthesis, and Physiological Functions

Killiny

Nehela

2020

Plants

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Polyamines (PAs) are ubiquitous biogenic amines found in all living organisms from bacteria to Archaea, and Eukaryotes including plants and animals. Since the first description of putrescine conjugate, feruloyl-putrescine (originally called subaphylline), from grapefruit leaves and juice, many research studies have highlighted the importance of PAs in growth, development, and other physiological processes in citrus plants. PAs appear to be involved in a wide range of physiological processes in citrus plants; however, their exact roles are not fully understood. Accordingly, in the present review, we discuss the biosynthesis of PAs in citrus plants, with an emphasis on the recent advances in identifying and characterizing PAs-biosynthetic genes and other upstream regulatory genes involved in transcriptional regulation of PAs metabolism. In addition, we will discuss the recent metabolic, genetic, and molecular evidence illustrating the roles of PAs metabolism in citrus physiology including somatic embryogenesis; root system formation, morphology, and architecture; plant growth and shoot system architecture; inflorescence, flowering, and flowering-associated events; fruit set, development, and quality; stomatal closure and gas-exchange; and chlorophyll fluorescence and photosynthesis. We believe that the molecular and biochemical understanding of PAs metabolism and their physiological roles in citrus plants will help citrus breeding programs to enhance tolerance to biotic and abiotic stresses and provide bases for further research into potential applications.

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Effects of Polyamines on Vegetative Characteristics, Growth, Flowering and Yield of Strawberry ('Paros' and 'Selva')

Cited by 9 publications

References 0 publications

Effects of Exogenous Putrescine on Mycorrhiza, Root System Architecture, and Physiological Traits of Glomus mosseae-Colonized Trifoliate Orange Seedlings

Effects of Exogenous Putrescine on Mycorrhiza, Root System Architecture, and Physiological Traits of Glomus mosseae-Colonized Trifoliate Orange Seedlings

Chinese cherry CpMYB44‐CpSPDS2 module regulates spermidine content and florescence in tobacco

Citrus Polyamines: Structure, Biosynthesis, and Physiological Functions

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