The effectiveness of grafting to improve drought tolerance in tomato

Zhang, Zhihuan; Liu, Yu; Cao, Bangwei; Chen, Zijing; Xu, Kun

doi:10.1007/s10725-020-00596-2

Cited by 26 publications

(18 citation statements)

References 51 publications

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“…Note that the increasing allele (the allele increasing the trait mean) at those QTLs (except for FlN_WD_4.2 within cluster V) was from S. lycopersicum , however, due to the epistatic interactions detected for ShDW and ShWC under water deficit, the best (increasing) genotype is conditioned to the presence of a S. pimpinellifolium allele at a second locus ( Figure S2 ). In the case of ShDW_WD_3 (cluster III), this locus at SNP 1495 corresponds to a previously reported QTL for iron concentrations in leaf and fruit under low iron availability (Fe_F/L_12 in [ 50 ]), in agreement with the known effect of drought on plant nutrient acquisition [ 27 , 38 ]. These results suggest the importance of considering epistatic interactions regarding marker-assisted selection when using wild germplasm.…”

Section: Discussionsupporting

confidence: 84%

“…Since roots regulate water uptake, grafting tomato varieties on improved rootstocks for water acquisition and translocation might increase water use efficiency without decreasing tomato yields and increasing nutrient fruit content [ 36 , 37 , 38 ]. Besides, grafting can delay leaf senescence, extending the harvesting period [ 39 , 40 ] in what could be considered as a stay-green trait.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Analysis of Root-to-Shoot Signaling and Rootstock-Mediated Tolerance to Water Deficit in Tomato

Asíns

Albacete

Martínez‐Andújar

et al. 2020

Genes

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Developing drought-tolerant crops is an important strategy to mitigate climate change impacts. Modulating root system function provides opportunities to improve crop yield under biotic and abiotic stresses. With this aim, a commercial hybrid tomato variety was grafted on a genotyped population of 123 recombinant inbred lines (RILs) derived from Solanum pimpinellifolium, and compared with self- and non-grafted controls, under contrasting watering treatments (100% vs. 70% of crop evapotranspiration). Drought tolerance was genetically analyzed for vegetative and flowering traits, and root xylem sap phytohormone and nutrient composition. Under water deficit, around 25% of RILs conferred larger total shoot dry weight than controls. Reproductive and vegetative traits under water deficit were highly and positively correlated to the shoot water content. This association was genetically supported by linkage of quantitative trait loci (QTL) controlling these traits within four genomic regions. From a total of 83 significant QTLs, most were irrigation-regime specific. The gene contents of 8 out of 12 genomic regions containing 46 QTLs were found significantly enriched at certain GO terms and some candidate genes from diverse gene families were identified. Thus, grafting commercial varieties onto selected rootstocks derived from S. pimpinellifolium provides a viable strategy to enhance drought tolerance in tomato.

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Genetic Analysis of Root-to-Shoot Signaling and Rootstock-Mediated Tolerance to Water Deficit in Tomato

Asíns

Albacete

Martínez‐Andújar

et al. 2020

Genes

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show abstract

“…nutrients toward the shoots (Zhang et al, 2020). Similarly, plants grafted with drought-tolerant tomato rootstocks (Zarina) showed higher macronutrient (N, P and K) and micronutrient (Fe and Cu) concentrations under water stressed conditions (Sańchez-Rodrıǵuez et al, 2013;Sańchez-Rodrıǵuez et al, 2014).…”

Section: Shen Et Al 2022mentioning

confidence: 95%

Grafting enhances plants drought resistance: Current understanding, mechanisms, and future perspectives

Yang

Xia²,

Zeng³

et al. 2022

Front. Plant Sci.

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Drought, one of the most severe and complex abiotic stresses, is increasingly occurring due to global climate change and adversely affects plant growth and yield. Grafting is a proven and effective tool to enhance plant drought resistance ability by regulating their physiological and molecular processes. In this review, we have summarized the current understanding, mechanisms, and perspectives of the drought stress resistance of grafted plants. Plants resist drought through adaptive changes in their root, stem, and leaf morphology and structure, stomatal closure modulation to reduce transpiration, activating osmoregulation, enhancing antioxidant systems, and regulating phytohormones and gene expression changes. Additionally, the mRNAs, miRNAs and peptides crossing the grafted healing sites also confer drought resistance. However, the interaction between phytohormones, establishment of the scion-rootstock communication through genetic materials to enhance drought resistance is becoming a hot research topic. Therefore, our review provides not only physiological evidences for selecting drought-resistant rootstocks or scions, but also a clear understanding of the potential molecular effects to enhance drought resistance using grafted plants.

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“…Use of resistant rootstocks that are intra-specific (within the same species) selections and have resistance genes or inter-specific (different species) and inter-generic (different genera) with non-host resistance mechanisms or have a resistance that lies on multiple genes, seem to be an important weapon in the fight against stresses ( Louws et al, 2010 ). Furthermore, grafted plants are used against a variety of abiotic unfavorable soil conditions such as low water availability and drought ( Rouphael et al, 2008 ; Sánchez-Rodríguez et al, 2012 ; Liu et al, 2016b ; Zhang et al, 2020 ), flooding ( Yetisir et al, 2006 ; Bhatt et al, 2015 ), nutrients deficiency ( Zhang et al, 2012 ; Huang et al, 2016 ; Martínez-Andújar et al, 2017 ), high salt concentrations ( He et al, 2009 ; Huang et al, 2011 ; Colla et al, 2012 ), heavy metals toxicity ( Arao et al, 2008 ), and low or high temperatures ( Rivero et al, 2003 ; Zhou et al, 2007 ; Venema et al, 2008 ). Finally, grafting has been used extensively in plant biology and physiology to identify mobile molecules, such as proteins, mRNAs, and small RNAs, that control important aspects of plant development and performance.…”

Section: Introductionmentioning

confidence: 99%

Vegetable Grafting From a Molecular Point of View: The Involvement of Epigenetics in Rootstock-Scion Interactions

Tsaballa¹,

Xanthopoulou²,

Madesis

et al. 2021

Front. Plant Sci.

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Vegetable grafting is extensively used today in agricultural production to control soil-borne pathogens, abiotic and biotic stresses and to improve phenotypic characteristics of the scion. Commercial vegetable grafting is currently practiced in tomato, watermelon, melon, eggplant, cucumber, and pepper. It is also regarded as a rapid alternative to the relatively slow approach of breeding for increased environmental-stress tolerance of fruit vegetables. However, even though grafting has been used for centuries, until today, there are still many issues that have not been elucidated. This review will emphasize on the important mechanisms taking place during grafting, especially the genomic interactions between grafting partners and the impact of rootstocks in scion’s performance. Special emphasis will be drawn on the relation between vegetable grafting, epigenetics, and the changes in morphology and quality of the products. Recent advances in plant science such as next-generation sequencing provide new information regarding the molecular interactions between rootstock and scion. It is now evidenced that genetic exchange is happening across grafting junctions between rootstock and scion, potentially affecting grafting-mediated effects already recorded in grafted plants. Furthermore, significant changes in DNA methylation are recorded in grafted scions, suggesting that these epigenetic mechanisms could be implicated in grafting effects. In this aspect, we also discuss the process and the molecular aspects of rootstock scion communication. Finally, we provide with an extensive overview of gene expression changes recorded in grafted plants and how these are related to the phenotypic changes observed. Τhis review finally seeks to elucidate the dynamics of rootstock-scion interactions and thus stimulate more research on grafting in the future. In a future where sustainable agricultural production is the way forward, grafting could play an important role to develop products of higher yield and quality in a safe and “green” way.

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The effectiveness of grafting to improve drought tolerance in tomato

Cited by 26 publications

References 51 publications

Genetic Analysis of Root-to-Shoot Signaling and Rootstock-Mediated Tolerance to Water Deficit in Tomato

Genetic Analysis of Root-to-Shoot Signaling and Rootstock-Mediated Tolerance to Water Deficit in Tomato

Grafting enhances plants drought resistance: Current understanding, mechanisms, and future perspectives

Vegetable Grafting From a Molecular Point of View: The Involvement of Epigenetics in Rootstock-Scion Interactions

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