Salt tolerance traits revealed in mandarins (Citrus reticulata Blanco) are mainly related to root-to-shoot Cl− translocation limitation and leaf detoxification processes

Yahmed, Jihène Ben; Novillo, Pedro; García-Lor, Andrés; Salvador, A.; Mimoun, M. Ben; Luro, François; Talón, Manuel; Ollitrault, Patrick; Morillón, Raphaël

doi:10.1016/j.scienta.2015.05.005

Cited by 13 publications

(7 citation statements)

References 57 publications

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“…Moreover, the Citrus macrophylla (grapefruit) rootstock lacked Cl − and Na + under salinity conditions, in accordance with [60] and with the salt tolerance rankings of the rootstocks reported by other authors [61,62]. Low Na + and Cl − levels in the grapefruit trees irrigated with saline RW as compared to the control did not affect the vegetative growth (similar canopy volumes in all trees as were described in [42] and [63]) or yield [7], suggesting that this crop is a salt-stress-tolerant citrus [64].…”

Section: Water Relations Of the Grapefruit And Mandarin Crops Under Saline And Water Stressessupporting

confidence: 90%

Isohydricity of Two Different Citrus Species under Deficit Irrigation and Reclaimed Water Conditions

Trigueros

Gambín

Tortosa

et al. 2021

Plants

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Citrus species are frequently subjected to water and saline stresses worldwide. We evaluated the effects of diurnal changes in the evaporative demands and soil water contents on the plant physiology of grapefruit and mandarin crops under saline reclaimed (RW) and transfer (TW) water conditions, combined with two irrigation strategies, fully irrigated (fI) and non-irrigated (nI). The physiological responses were different depending on the species. Grapefruit showed an isohydric pattern, which restricted the use of the leaf water potential (Ψl) as a plant water status indicator. Its water status was affected by salinity (RW) and water stress (nI), mainly as the combination of both stresses (RW-nI); however, mandarin turned out to be relatively more tolerant to salinity and more sensitive to water stress, mainly because of its low hydraulic conductance (K) levels, showing a critical drop in Ψl that led to severe losses of root–stem (Kroot–stem) and canopy (Kcanopy) hydraulic conductance in TW-nI. This behavior was not observed in RW-nI because a reduction in canopy volume as an adaptive characteristic was observed; thus, mandarin exhibited more anisohydric behavior compared to grapefruit, but isohydrodynamic since its hydrodynamic water potential gradient from roots to shoots (ΔΨplant) was relatively constant across variations in stomatal conductance (gs) and soil water potential. The gs was considered a good plant water status indicator for irrigation scheduling purposes in both species, and its responses to diurnal VPD rise and soil drought were strongly correlated with Kroot–stem. ABA did not show any effect on stomatal regulation, highlighting the fundamental role of plant hydraulics in driving stomatal closure.

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Section: Water Relations Of the Grapefruit And Mandarin Crops Under Saline And Water Stressessupporting

confidence: 90%

Isohydricity of Two Different Citrus Species under Deficit Irrigation and Reclaimed Water Conditions

Trigueros

Gambín

Tortosa

et al. 2021

Plants

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“…The genetic and cytogenetic diversity of this group, revealed by molecular markers [ 5 – 10 ] and chromosomal banding patterns [ 11 ], is large. It also displays a wide phenotypic diversity for fruit pomology, peel and leaf oils contents [ 12 – 13 ], and tolerance to biotic and abiotic stresses [ 14 ].This phenotypic and genetic variability reflects a long history of cultivation, in which many mutations and natural hybridizations, including introgression of C . maxima (Burm.)…”

Section: Introductionmentioning

confidence: 99%

Genotyping by sequencing reveals the interspecific C. maxima / C. reticulata admixture along the genomes of modern citrus varieties of mandarins, tangors, tangelos, orangelos and grapefruits

Oueslati

Salhi-Hannachi

Luro³

et al. 2017

PLoS ONE

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The mandarin horticultural group is an important component of world citrus production for the fresh fruit market. This group formerly classified as C. reticulata is highly polymorphic and recent molecular studies have suggested that numerous cultivated mandarins were introgressed by C. maxima (the pummelos). C. maxima and C. reticulata are also the ancestors of sweet and sour oranges, grapefruit, and therefore of all the “small citrus” modern varieties (mandarins, tangors, tangelos) derived from sexual hybridization between these horticultural groups. Recently, NGS technologies have greatly modified how plant evolution and genomic structure are analyzed, moving from phylogenetics to phylogenomics. The objective of this work was to develop a workflow for phylogenomic inference from Genotyping By Sequencing (GBS) data and to analyze the interspecific admixture along the nine citrus chromosomes for horticultural groups and recent varieties resulting from the combination of the C. reticulata and C. maxima gene pools. A GBS library was established from 55 citrus varieties, using the ApekI restriction enzyme and selective PCR to improve the read depth. Diagnostic polymorphisms (DPs) of C. reticulata/C. maxima differentiation were identified and used to decipher the phylogenomic structure of the 55 varieties. The GBS approach was powerful and revealed 30,289 SNPs and 8,794 Indels with 12.6% of missing data. 11,133 DPs were selected covering the nine chromosomes with a higher density in genic regions. GBS combined with the detection of DPs was powerful for deciphering the “phylogenomic karyotypes” of cultivars derived from admixture of the two ancestral species after a limited number of interspecific recombinations. All the mandarins, mandarin hybrids, tangelos and tangors analyzed displayed introgression of C. maxima in different parts of the genome. C. reticulata/C. maxima admixture should be a major component of the high phenotypic variability of this germplasm opening up the way for association studies based on phylogenomics.

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“…Based on these results, A. heterophylla conserved higher PSII performance and Chlorophyll content in its leaves then the other species. With the observed leaf curling and other osmotic adjustment mechanisms as response to salinity stress we suggests that it may constitute an adaptation strategy to avoid high salt stress disadvantages in photosynthetic metabolism [28].…”

Section: Discussionmentioning

confidence: 84%

Study of effects of seawater salt spray on growth, chlorophyll fluorescence and chlorophyll content in three coastal species of Morocco

Kouali¹

2017

JMES

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Salt tolerance traits revealed in mandarins (Citrus reticulata Blanco) are mainly related to root-to-shoot Cl− translocation limitation and leaf detoxification processes

Cited by 13 publications

References 57 publications

Isohydricity of Two Different Citrus Species under Deficit Irrigation and Reclaimed Water Conditions

Isohydricity of Two Different Citrus Species under Deficit Irrigation and Reclaimed Water Conditions

Genotyping by sequencing reveals the interspecific C. maxima / C. reticulata admixture along the genomes of modern citrus varieties of mandarins, tangors, tangelos, orangelos and grapefruits

Study of effects of seawater salt spray on growth, chlorophyll fluorescence and chlorophyll content in three coastal species of Morocco

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