Plant grafting: Molecular mechanisms and applications

Feng, Ming; Augstein, Frauke; Kareem, Abdul; Melnyk, Charles W.

doi:10.1016/j.molp.2023.12.006

Cited by 12 publications

(5 citation statements)

References 146 publications

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“…Graft healing is a complex process that is affected by environmental factors, with temperature being one of the most important influencing factors. Previous work has described the stages of graft union formation, including the production of a necrotic layer, the proliferation of callus cells at the graft interface, and vascular redifferentiation across the graft interface [ 7 , 19 , 21 ]. The connection of the graft union between rootstock and scion is influenced by plant growth conditions, age, species, and so on.…”

Section: Discussionmentioning

confidence: 99%

“…It is widely recognized that the successful healing of rootstocks and scions is a crucial prerequisite for the cultivation of grafted seedlings. Successful grafting, involving the initial adhesion of scion and rootstock, callus tissue formation, and vascular reconnection, depends on internal factors, including hormones, sugars, and the developmental stage, but also on external factors, such as temperature, humidity, light, and culture methods [ 5 , 6 , 7 ]. Optimizing environmental factors during the healing and acclimatization stages is essential to produce high-quality grafted seedlings.…”

Section: Introductionmentioning

confidence: 99%

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An Integrated Analysis of Anatomical and Sugar Contents Identifies How Night Temperatures Regulate the Healing Process of Oriental Melon Grafted onto Pumpkin

Liang,

Liu,

Shi

et al. 2024

Plants

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Graft healing is a complex process affected by environmental factors, with temperature being one of the most important influencing factors. Here, oriental melon grafted onto pumpkin was used to study changes in graft union formation and sugar contents at the graft interface under night temperatures of 18 °C and 28 °C. Histological analysis suggested that callus formation occurred 3 days after grafting with a night temperature of 28 °C, which was one day earlier than with a night temperature of 18 °C. Vascular reconnection with a night temperature of 28 °C was established 2 days earlier than with a night temperature of 18 °C. Additionally, nine sugars were significantly enriched in the graft union, with the contents of sucrose, trehalose, raffinose, D–glucose, D–fructose, D–galactose, and inositol initially increasing but then decreasing. Furthermore, we also found that exogenous glucose and fructose application promotes vascular reconnection. However, exogenous sucrose application did not promote vascular reconnection. Taken together, our results reveal that elevated temperatures improve the process of graft union formation through increasing the contents of sugars. This study provides information to develop strategies for improving grafting efficiency under low temperatures.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Integrated Analysis of Anatomical and Sugar Contents Identifies How Night Temperatures Regulate the Healing Process of Oriental Melon Grafted onto Pumpkin

Liang,

Liu,

Shi

et al. 2024

Plants

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“…Although the nature of these signals is still undefined, they could be a combination of the genes that are expressed in a gradient pattern along the meristem (Wendrich et al, 2017). As another example, suboptimal high temperatures increase ERF115 expression in intact roots (Heyman et al, 2013), and grafting is known to be aided by temperature (Feng et al, 2023). Modeling would be useful to integrate the role of environmental signals in regeneration, for example, by determining whether known effects of the root temperature-response pathways on auxin (Ai et al, 2023) and SHR expression (Perez-Garcia et al, 2023) could explain these observations.…”

Section: Toward a Multi-scale Understanding Of Root Regenerationmentioning

confidence: 99%

Multi‐scale mechanisms driving root regeneration: From regeneration competence to tissue repatterning

García‐Gómez,

ten Tusscher

2024

The Plant Journal

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SUMMARYPlants possess an outstanding capacity to regenerate enabling them to repair damages caused by suboptimal environmental conditions, biotic attacks, or mechanical damages impacting the survival of these sessile organisms. Although the extent of regeneration varies greatly between localized cell damage and whole organ recovery, the process of regeneration can be subdivided into a similar sequence of interlinked regulatory processes. That is, competence to regenerate, cell fate reprogramming, and the repatterning of the tissue. Here, using root tip regeneration as a paradigm system to study plant regeneration, we provide a synthesis of the molecular responses that underlie both regeneration competence and the repatterning of the root stump. Regarding regeneration competence, we discuss the role of wound signaling, hormone responses and synthesis, and rapid changes in gene expression observed in the cells close to the cut. Then, we consider how this rapid response is followed by the tissue repatterning phase, where cells experience cell fate changes in a spatial and temporal order to recreate the lost stem cell niche and columella. Lastly, we argue that a multi‐scale modeling approach is fundamental to uncovering the mechanisms underlying root regeneration, as it allows to integrate knowledge of cell‐level gene expression, cell‐to‐cell transport of hormones and transcription factors, and tissue‐level growth dynamics to reveal how the bi‐directional feedbacks between these processes enable self‐organized repatterning of the root apex.

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“…The genus Citrus encompasses a broad range of cultivated fruit crops of high global value [ 1 ]. Grafting, a commonly employed technique, involves merging a desired citrus scion with a compatible rootstock to propagate desired traits [ 2 , 3 ]. Rootstocks play a pivotal role in determining graft compatibility and scion vigor by influencing nutrient uptake, water absorption, disease resistance, and stress tolerance [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of a New Citrus Rootstock Citrus junos cv. Shuzhen No. 1 on Performances of Ten Hybrid Citrus Cultivars

He,

Chai,

Xie

et al. 2024

Plants

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The importance of rootstock in citrus production lies in its crucial role in determining tree growth, environmental stress tolerance, and fruit quality. Citrus junos Siebold ex Tanaka cv. Shuzhen No. 1, a recently developed rootstock, demonstrates excellent graft compatibility and abiotic stress tolerance. The objective of this study was to assess ten hybrid citrus cultivars grafted onto two C. junos rootstock selections, with the aim of determining the potential for industrial utilization of the new citrus rootstock. All graft junctions are mature and well established. Vigorous growth characterized all ten citrus cultivars on Shuzhen No. 1, with the largest tree’s height reaching 280.33 cm (Wogan scion) and the widest scion’s diameter being 67.52 cm (Chunjian scion). However, the scion-to-rootstock diameter ratio was the lowest at 0.62 (Chunxiang scion). C. junos rootstock selections significantly affected fruit weight (five of ten scions) and fruit color (seven of ten scions) but had negligible impact on peel thickness (nine of ten scions). Furthermore, rootstock type had a significant influence on fruit quality. In conclusion, our findings indicate strong graft compatibility between all scions and C. junos rootstocks, which can impact overall size and fruit quality. Based on these results, Shuzhen No. 1 is recommended as a valuable citrus rootstock.

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Plant grafting: Molecular mechanisms and applications

Cited by 12 publications

References 146 publications

An Integrated Analysis of Anatomical and Sugar Contents Identifies How Night Temperatures Regulate the Healing Process of Oriental Melon Grafted onto Pumpkin

An Integrated Analysis of Anatomical and Sugar Contents Identifies How Night Temperatures Regulate the Healing Process of Oriental Melon Grafted onto Pumpkin

Multi‐scale mechanisms driving root regeneration: From regeneration competence to tissue repatterning

The Effects of a New Citrus Rootstock Citrus junos cv. Shuzhen No. 1 on Performances of Ten Hybrid Citrus Cultivars

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