Autotetraploid trifoliate orange (Poncirus trifoliata) rootstocks do not impact clementine quality but reduce fruit yields and highly modify rootstock/scion physiology

Hussain, Sajjad; Curk, Franck; Dhuique-Mayer, Claudie; Urban, Laurent; Ollitrault, Patrick; Luro, François; Morillón, Raphaël

doi:10.1016/j.scienta.2011.11.008

Cited by 42 publications

(37 citation statements)

References 43 publications

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“…Citrus rootstocks should confer good characteristics to cultivate canopy, such as tolerance to drought and salinity, good quality and productivity of fruit (Allario et al, 2011;Hussain et al, 2012;Saleh et al, 2008), besides inducing reduction of the plant size (Pompeu Junior and Blumer, 2009), therefore facilitating orchard management. In this study, differences in morphological characteristics between diploid and tetraploid plants were observed, such as differences in growth, whereas tetraploid plants were always smaller and more compact.…”

Section: Resultsmentioning

confidence: 99%

“…Most citrus species are diploid (2n=2x=18), however polyploid plants, like triploid (2n=3x=27) and tetraploid (2n=4x=36), can be found in diploid populations (Aleza et al, 2011;Cameron and Frost, 1968;Hussain et al, 2012;Lee, 1988), being originated sexually through the fusion of nonreduced gametes or somatically, by chromosome duplication in nuclear cells and the non-division of these cells in two during mitoses (Cameron and Frost, 1968;Lee, 1988).…”

Section: Introductionmentioning

confidence: 99%

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Comparison between diploid and tetraploid citrus rootstocks: morphological characterization and growth evaluation

et al. 2014

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Tetraploid citrus rootstocks may present different morphological characteristics and growth when compared to diploid ones. This worked aimed at comparing morphological characteristics and height growth of diploid and tetraploid plants from the rootstocks 'Swingle' citrumelo [C. paradise Macf. x Poncirus trifoliate (L.) Raf], citrange 'Troyer' (C. sinensis (L.) Osb. x P. trifoliata) and citranges 'Fepagro C 13' and 'Fepagro C 37' [C. sinensis cv. Pêra x P. trifoliata] during twelve months. Diploid (2n=18) and tetraploid (2n=36) plants originated from the same seed were identified, cultivated and evaluated every 45 days regarding color, height, petiole length, leaf length and central leaflet width. Significant differences were observed for the evaluated characteristics: the average of petiole length was 1.78 cm in the diploid and 0.99 cm in the tetraploid plants; the average of leaf length was 2.32 cm in the diploid and 2.95 cm in the tetraploid plants; the average of central leaflet width was 1.33 cm in the diploid and 1.69 cm in the tetraploid plants. Moreover, tetraploid plants had darker and thicker leaves than the diploid ones. Variation regarding height was observed and the diploid plants presented higher growth than the tetraploid ones. As tetraploid plants are smaller, have a slow height growth and wider and longer leaves.Key words: Citrus, morphology, leaf color, height, dwarfing.Comparação entre porta-enxertos cítricos diploides e tetraploides: Caracterização morfológica e avaliação do crescimento Resumo Porta-enxertos cítricos tetraploides podem apresentar características morfológicas e desenvolvimento diferenciados comparados a plantas diploides. Este trabalho teve como objetivo avaliar características morfológicas e o crescimento em altura de plantas diploides e tetraploides dos porta-enxertos citrumelo Swingle [C. paradisi Macf. x Poncirus trifoliata (L.) Raf], citrange Troyer [C. sinensis (L.) Osb. x P. trifoliata] e dos citranges Fepagro C 13 e Fepagro C 37 (C. sinensis cv. Pêra x P. trifoliata) por um período de 12 meses. Plantas diploides (2n=18) e tetraploides (2n=36) oriundas da mesma semente foram identificadas, estabelecidas e avaliadas a cada 45 dias quanto a cor, altura, comprimento do pecíolo, da folha e largura do limbo do folíolo central. Diferenças significativas foram observadas nos caracteres avaliados: a média do comprimento do pecíolo nas plantas diploides foi de 1,78 cm e, nas tetraploides, de 0,99 cm; a média do comprimento das folhas nas diploides foi de 2,32cm e nas tetraploides de 2,95 cm; a média de largura dos folíolos centrais das folhas das plantas diploides foi de 1,33 cm e, nas tetraploides, de 1,69 cm; além disso, as plantas tetraploides apresentaram folhas com coloração mais escura e mais espessas do que as das diploides. Variações foram observadas na altura, com as plantas diploides apresentando maior crescimento que as tetraploides. Portanto, plantas tetraploides apresentam menor tamanho, crescimento em altura mais lento e folhas mais largas e compridas.Palavr...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison between diploid and tetraploid citrus rootstocks: morphological characterization and growth evaluation

et al. 2014

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“…Tetraploid citrus have lower rates of whole plant transpiration, which is associated with lower growth rates, than their respective 2x parents (Syvertsen, Lee & Grosser 2000;Allario et al 2011). The recent work we performed demonstrated that the use of 4x rootstocks dramatically changes both tree physiology and fruit yield, without promoting large changes in fruit quality criteria (Hussain et al 2012). Furthermore, based on seedling growth and chloride accumulation in leaves exposed to salinity stress, 4x citrus seedlings were shown to be more stress tolerant than their respective 2x parents (Saleh et al 2008).…”

Section: Introductionmentioning

confidence: 88%

Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

Allario

Brumós

Colmenero‐Flores

et al. 2012

Plant Cell & Environment

Self Cite

184

155

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Whole-genome duplication, or polyploidy, is common in many plant species and often leads to better adaptation to adverse environmental condition. However, little is known about the physiological and molecular determinants underlying adaptation. We examined the drought tolerance in diploid (2x) and autotetraploid (4x) clones of Rangpur lime (Citrus limonia) rootstocks grafted with 2x Valencia Delta sweet orange (Citrus sinensis) scions, named V/2xRL and V/4xRL, respectively. Physiological experiments to study root-shoot communication associated with gene expression studies in roots and leaves were performed. V/4xRL was much more tolerant to water deficit than V/2xRL. Gene expression analysis in leaves and roots showed that more genes related to the response to water stress were differentially expressed in V/2xRL than in V/4xRL. Prior to the stress, when comparing V/4xRL to V/2xRL, V/4xRL leaves had lower stomatal conductance and greater abscisic acid (ABA) content. In roots, ABA content was higher in V/4xRL and was associated to a greater expression of drought responsive genes, including CsNCED1, a pivotal regulatory gene of ABA biosynthesis. We conclude that tetraploidy modifies the expression of genes in Rangpur lime citrus roots to regulate long-distance ABA signalling and adaptation to stress.

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“…However, increasing attention has been invested to autopolyploids due to their profound effects on plant morphology and physiology relative to their diploid progenitors. Such alterations may include larger organ structure (Dudits et al ., ), slower growth (Allario et al ., ), improved fruit yield (Hussain et al ., ) and different anatomical features (Allario et al ., ). In addition, accumulating evidence demonstrate that autotetraploids exhibit dramatically enhanced tolerance to a variety of abiotic stresses, including cold (Oustric et al ., ), drought (Allario et al ., ), salt (Liu and Sun, ; Ruiz et al ., ; Tu et al ., ), heat (Zhang et al ., ), chromium toxicity (Balal et al ., ) and boron excess (Ruiz et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced ROS scavenging and sugar accumulation contribute to drought tolerance of naturally occurring autotetraploids in Poncirus trifoliata

Wei

Wang

Xie

et al. 2019

Plant Biotechnology Journal

116

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Summary Tetraploids have been reported to exhibit increased stress tolerance, but the underlying molecular and physiological mechanisms remain poorly understood. In this study, autotetraploid plants were identified by screening natural seedlings of trifoliate orange ( Poncirus trifoliata ). The tetraploids exhibited different morphology and displayed significantly enhanced drought and dehydration tolerance in comparison with the diploid progenitor. Transcriptome analysis indicated that a number of stress‐responsive genes and pathways were differentially influenced and enriched in the tetraploids, in particular those coding for enzymes related to antioxidant process and sugar metabolism. Transcript levels and activities of antioxidant enzymes (peroxidase and superoxide dismutase) and sucrose‐hydrolysing enzyme (vacuolar invertase) were increased in the tetraploids upon exposure to the drought, concomitant with greater levels of glucose but lower level of reactive oxygen species ( ROS ). These data indicate that the tetraploids might undergo extensive transcriptome reprogramming of genes involved in ROS scavenging and sugar metabolism, which contributes, synergistically or independently, to the enhanced stress tolerance of the tetraploid. Our results reveal that the tetraploids take priority over the diploid for stress tolerance by maintaining a more robust system of ROS detoxification and osmotic adjustment via elevating antioxidant capacity and sugar accumulation in comparison with the diploid counterpart.

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Autotetraploid trifoliate orange (Poncirus trifoliata) rootstocks do not impact clementine quality but reduce fruit yields and highly modify rootstock/scion physiology

Cited by 42 publications

References 43 publications

Comparison between diploid and tetraploid citrus rootstocks: morphological characterization and growth evaluation

Comparison between diploid and tetraploid citrus rootstocks: morphological characterization and growth evaluation

Tetraploid Rangpur lime rootstock increases drought tolerance via enhanced constitutive root abscisic acid production

Enhanced ROS scavenging and sugar accumulation contribute to drought tolerance of naturally occurring autotetraploids in Poncirus trifoliata

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