Role of phytohormones in the formation of dwarf and tall Siberian crabapple (Malus bаccata L. Borkh.)

Rudikovskii, A. V.; Stolbicova, Alexandra V.; Rudikovskaya, E. G.; Дударева, Л. В.

doi:10.13080/z-a.2019.106.022

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…The interactions between and cross-effects of plant hormones can significantly affect plant growth processes (Zhang et al, 2015), and it has been suggested that the ratio of the endogenous content of IAA to ABA in plants is closely related to plant dwarfing (Tworkoski and Fazio, 2016). Previous investigators found that crabapple dwarfing was due to a decrease in the endogenous IAA content and changes in the IAA:ABA ratio under both growth conditions (Rudikovskii et al, 2019). Our experimental results showed that after external application of IAA, GA3 and BR, at 20 d, the IAA:ABA ratio in the treated plants were significantly higher than those in D-CK plants, and the IAA:ABA ratio was significantly and positively correlated with mutant plant height, which further confirmed that exogenous hormones affected endogenous hormones in dwarfing mutants and regulated plant height.…”

Section: Relationship Between Relative Content Of Endogenous Hormones...mentioning

confidence: 99%

Exogenous hormone application regulates dwarf mutant plant height in Sophora davidii (Franch.) Skeels by changing endogenous hormone levels

Xie

Sun

Zhao

et al. 2023

Chil. j. agric. res.

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Dwarf mutants are valuable materials for investigating plant gene function and developing new crop varieties. In the present study, dwarf mutant (D-CK) and wild-type (W-CK) Sophora davidii (Franch.) Skeels plants foliarly sprayed with distilled water were used as controls, and dwarf mutants were treated with different concentrations of gibberellin A3 (GA3; 20, 40 and 60 mg L -1 ), brassinosteroid (BR; 12.5, 25 and 50 mg L -1 ); and auxin indole-3-acetic acid (IAA; 12.5, 25 and 50 mg L -1 ) to study the changes in plant height at 20, 40 and 60 d after exogenous hormone spraying. The changes in endogenous contents of IAA, GA3, BR, abscisic acid (ABA), jasmonic acid (JA), and salicylic acid (SA) and IAA:ABA ratio in the dwarf mutant plants were also measured at 20, 40 and 60 d after exogenous hormone application. The dwarf mutants reverted to the W-CK height phenotype after 60 d of exogenous spraying with different concentrations of GA3 and BR (except 50 mg•L -1 ), but after exogenous spraying with IAA, dwarf mutants did not revert to the W-CK height phenotype. Compared with D-CK plants, endogenous GA3, BR and IAA contents in dwarf mutant plants increased to some extent with exogenous spraying of GA3, BR and IAA. The results indicated that exogenous spraying of different concentrations of GA3 and BR regulated S. davidii plant height by promoting the secretion of endogenous GA3, BR, IAA and SA and inhibiting endogenous ABA secretion in dwarf mutant. The height of mutants was sensitive to exogenous GA3 and BR but not to exogenous IAA.

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Section: Relationship Between Relative Content Of Endogenous Hormones...mentioning

confidence: 99%

Exogenous hormone application regulates dwarf mutant plant height in Sophora davidii (Franch.) Skeels by changing endogenous hormone levels

Xie

Sun

Zhao

et al. 2023

Chil. j. agric. res.

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“…Phytohormones play pivotal roles in plant growth and architecture [133]. Among these, gibberellins (GAs) are recognized for their ability to stimulate plant elongation [2].…”

Section: Tree Growth and Developmentmentioning

confidence: 99%

CRISPR/Cas as a Genome-Editing Technique in Fruit Tree Breeding

Martín-Valmaseda,

Devin,

Ortuño-Hernández

et al. 2023

IJMS

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CRISPR (short for “Clustered Regularly Interspaced Short Palindromic Repeats”) is a technology that research scientists use to selectively modify the DNA of living organisms. CRISPR was adapted for use in the laboratory from the naturally occurring genome-editing systems found in bacteria. In this work, we reviewed the methods used to introduce CRISPR/Cas-mediated genome editing into fruit species, as well as the impacts of the application of this technology to activate and knock out target genes in different fruit tree species, including on tree development, yield, fruit quality, and tolerance to biotic and abiotic stresses. The application of this gene-editing technology could allow the development of new generations of fruit crops with improved traits by targeting different genetic segments or even could facilitate the introduction of traits into elite cultivars without changing other traits. However, currently, the scarcity of efficient regeneration and transformation protocols in some species, the fact that many of those procedures are genotype-dependent, and the convenience of segregating the transgenic parts of the CRISPR system represent the main handicaps limiting the potential of genetic editing techniques for fruit trees. Finally, the latest news on the legislation and regulations about the use of plants modified using CRISPR/Cas systems has been also discussed.

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“…W hen compared to MM 106 trees, root-and shootspecific abscisic acid (ABA) deliveries in M 9 composite trees were considerably greater and the increased ABA import corresponded briefly with earlier shoot growth cessation in M 9 composite trees (Else et al, 2018). Dwarfism in crabapple plants is induced by a decrease in indole-acetic acid (IAA) concentration and variations in the IAA:ABA (abscisic acid) content ratio (Rudikovskii et al, 2019). The 'Nantong-xiaofangshi' interstock influences water conductance and gene expression in the grafted scion associated to IAA and Gibberellic acid (GA) metabolism and transduction, hence regulating phytohormone levels and causing dwarfing (Shen et al, 2019).…”

Section: Phytohormonesmentioning

confidence: 99%

Dwarfism in Fruit Plants: A Review

Warang¹,

Gawas²

2023

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In this modern era, farmers are adopting high density planting (HDP) for most of the fruit crops. Dwarfing is based on the principle of making the optimal use of vertical and horizontal space per unit time and harnessing the highest potential returns per unit of inputs and natural resources. Dwarfing in fruit crops can be accomplished through a variety of methods, including the use of dwarfing rootstock, the selection of spur type scion cultivars, use of interstock, pruning, root pruning, various training systems, girdling, scoring, bark invasion and the application of growth retardants. One strategy for promoting early fruiting, less vigour and increasing production is to utilize dwarf root stocks. The mechanism underlying dwarfing involves anatomical, physiological and biochemical changes. It has been proposed that dwarfing rootstock or interstock control tree size by regulating the auxin that passes through the rootstock or interstock’s bark. Paclobutrazol retards growth, shoot elongation and reduced internodal length by inhibiting gibberellins synthesis. Dwarfness can be imparted by the using incompatible rootstock. Dwarfing can be induced by inducing viral infection, although, it is not commercially adopted. Recombinant DNA technology has recently expanded the gene pool that can be managed to cause dwarfism and maximize benefits in horticulture crops.

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Role of phytohormones in the formation of dwarf and tall Siberian crabapple (Malus bаccata L. Borkh.)

Cited by 7 publications

References 25 publications

Exogenous hormone application regulates dwarf mutant plant height in Sophora davidii (Franch.) Skeels by changing endogenous hormone levels

Exogenous hormone application regulates dwarf mutant plant height in Sophora davidii (Franch.) Skeels by changing endogenous hormone levels

CRISPR/Cas as a Genome-Editing Technique in Fruit Tree Breeding

Dwarfism in Fruit Plants: A Review

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