Lateral Branch Induction at Nursery With Growth Regulators in ‘Maxi Gala’ Apple Trees Grafted on Four Rootstocks

Rufato, Léo; Marchioretto, Lucas De Ross; Orlandi, J. C.; Michelon, M. F.; Rossi, Andrea De; Sander, G.F.; Macedo, Tiago Afonso de

doi:10.1016/j.scienta.2019.04.045

Cited by 14 publications

(8 citation statements)

References 11 publications

(22 reference statements)

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“…Grafting experiments (in grapevine) revealed hormonal regulation (auxins, CKs, ET, JA) of graft formation [177] indicating that all these phytohormones crosstalk to control graft development. Additionally, recent studies on apple grafting concluded that interaction of exogenously applied CKs and GAs regulates the branching pattern in grafted plants [178]. Scion growth gets triggered due to enhancement and reduction in the supply of CKs and auxins respectively, into shoot part [179].…”

Section: Hormonal Crosstalk At Grafting Sitementioning

confidence: 99%

Molecular Responses during Plant Grafting and Its Regulation by Auxins, Cytokinins, and Gibberellins

Sharma

Zheng

2019

Biomolecules

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Plant grafting is an important horticulture technique used to produce a new plant after joining rootstock and scion. This is one of the most used techniques by horticulturists to enhance the quality and production of various crops. Grafting helps in improving the health of plants, their yield, and the quality of plant products, along with the enhancement of their postharvest life. The main process responsible for successful production of grafted plants is the connection of vascular tissues. This step determines the success rate of grafts and hence needs to be studied in detail. There are many factors that regulate the connection of scion and stock, and plant hormones are of special interest for researchers in the recent times. These phytohormones act as signaling molecules and have the capability of translocation across the graft union. Plant hormones, mainly auxins, cytokinins, and gibberellins, play a major role in the regulation of various key physiological processes occurring at the grafting site. In the current review, we discuss the molecular mechanisms of graft development and the phytohormone-mediated regulation of the growth and development of graft union.

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Section: Hormonal Crosstalk At Grafting Sitementioning

confidence: 99%

Molecular Responses during Plant Grafting and Its Regulation by Auxins, Cytokinins, and Gibberellins

Sharma

Zheng

2019

Biomolecules

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“…CYC used alone can decrease apical dominance to induce lateral branching in apple [ 2 , 22 , 23 ] and in sweet cherry trees [ 24 ]. In this study, CYC could promote current-season’s bud branching, with the effect varying with the buds’ mature state ( Figure 1 ), considering that the bud structure, position, and fate generate various branching patterns [ 25 ].…”

Section: Discussionmentioning

confidence: 99%

Cyclanilide Induces Lateral Bud Outgrowth by Modulating Cytokinin Biosynthesis and Signalling Pathways in Apple Identified via Transcriptome Analysis

Xie

Zhao

et al. 2022

IJMS

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Cyclanilide (CYC), a plant growth regulator, is a potent shoot branching agent in apple. However, its mechanism remains unclear. The current study revealed that CYC treatment resulted in massive reprogramming of the axillary bud transcriptome, implicating several hormones in the response. We observed a marked increase (approximately 2-fold) in the level of zeatin riboside and a significant decrease (approximately 2-fold) in the level of abscisic acid (ABA). Zeatin metabolism gene cytokinin (CTK) oxidase 1 (CKX 1) was down-regulated at 168 h after CYC treatment compared with the control. Weighted gene co-expression network analysis of differentially expressed genes demonstrated the turquoise module clusters exhibited the highest positive correlation with zeatin riboside (r = 0.92) and the highest negative correlation with ABA (r = −0.8). A total of 37 genes were significantly enriched in the plant hormone signal transduction pathway in the turquoise module. Among them, the expressions of CTK receptor genes WOODEN LEG and the CTK type-A response regulators genes ARR3 and ARR9 were up-regulated. ABA signal response genes protein phosphatase 2C genes ABI2 and ABI5 were down-regulated in lateral buds after CYC treatment at 168 h. In addition, exogenous application of 6-benzylaminopurine (6-BA, a synthetic type of CTK) and CYC enhanced the inducing effect of CYC, whereas exogenous application of lovastatin (a synthetic type of inhibitor of CTK biosynthesis) or ABA and CYC weakened the promoting effect of CYC. These results collectively revealed that the stimulation of bud growth by CYC might involve CTK biosynthesis and signalling, including genes CKX1 and ARR3/9, which provided a direction for further study of the branching promoting mechanism of CYC.

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“…2). The suppression of apical dominance acts on the cytokinin: auxin ratio [17], which by increasing promotes the release of new buds [18]. The fertilization is also kwon to limits apical dominance [19].…”

Section: Discussionmentioning

confidence: 99%

Response of Cashew (Anacardium occidentale L.) to Pruning Systems for Yield Attributes and Nut Quality in Tchamba District, Togo

Amen

Assih²

2022

IJPSS

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The effect of different pruning systems combined with the application or not of chemical fertilizers was studied in Tchamba (Togo) during the 2020-2021 agricultural season (May to October). A randomized complete block design with five replications was adopted. There were six treatments in the experiment, F0T0 (N0P0K0 + no pruning), F0T1 (N0P0K0 + central opening pruning), F0T2 (N0P0K0 + modified leader pruning), F1T0 (N15P15K25 + no pruning), F1T1 (N15P15K25 + central opening pruning), F1T2 (N15P15K25 + modified leader pruning). The results revealed that the pruning systems associated or not with fertilization had a positive effect on cashew nut productivity and their quality. Modified leader pruning system associated to N15P15K25 gave significantly higher value of growth, and cashew nut yield attributes as compared to other treatments except for the value of kernel output ratio which is statistically identical to the control. Economic analysis showed that modified leader pruning system without fertilizer had a highest acceptability indice as compared to other treatments and can be recommended to producers under the conditions of our study.

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Lateral Branch Induction at Nursery With Growth Regulators in ‘Maxi Gala’ Apple Trees Grafted on Four Rootstocks

Cited by 14 publications

References 11 publications

Molecular Responses during Plant Grafting and Its Regulation by Auxins, Cytokinins, and Gibberellins

Molecular Responses during Plant Grafting and Its Regulation by Auxins, Cytokinins, and Gibberellins

Cyclanilide Induces Lateral Bud Outgrowth by Modulating Cytokinin Biosynthesis and Signalling Pathways in Apple Identified via Transcriptome Analysis

Response of Cashew (Anacardium occidentale L.) to Pruning Systems for Yield Attributes and Nut Quality in Tchamba District, Togo

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