Root Osmotic Adjustment and Stomatal Control of Leaf Gas Exchange are Dependent on Citrus Rootstocks Under Water Deficit

Miranda, Marcela T.; Silva, Simone F. da; Silveira, Neidiquele M.; Pereira, Luciano; Machado, Eduardo Caruso; Ribeiro, Rafael V.

doi:10.1007/s00344-020-10069-5

Cited by 44 publications

(36 citation statements)

References 38 publications

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Section: Effect Of Drought Stress On Plantsmentioning

confidence: 99%

“…When drought conditions are severe, respiration can also decrease, although increments in respiration were observed under mild stress [61]. To cope against the water deficit, the osmotic adjustment of stressed plants is maintained through an increase in sugar content of roots and leaves, and relatively greater growth in roots compared to shoots has been observed in plants subjected to drought stress in the past [62]. Environmental factors including drought duration, intensity and frequency, soil characteristics, growth conditions and stages, and plant species strongly influence the extent and duration of drought-related symptoms in plants [64].…”

Section: Effect Of Drought Stress On Plantsmentioning

confidence: 99%

See 1 more Smart Citation

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Seleiman

Al-Suhaibani

Ali

et al. 2021

Plants

855

383

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Drought stress, being the inevitable factor that exists in various environments without recognizing borders and no clear warning thereby hampering plant biomass production, quality, and energy. It is the key important environmental stress that occurs due to temperature dynamics, light intensity, and low rainfall. Despite this, its cumulative, not obvious impact and multidimensional nature severely affects the plant morphological, physiological, biochemical and molecular attributes with adverse impact on photosynthetic capacity. Coping with water scarcity, plants evolve various complex resistance and adaptation mechanisms including physiological and biochemical responses, which differ with species level. The sophisticated adaptation mechanisms and regularity network that improves the water stress tolerance and adaptation in plants are briefly discussed. Growth pattern and structural dynamics, reduction in transpiration loss through altering stomatal conductance and distribution, leaf rolling, root to shoot ratio dynamics, root length increment, accumulation of compatible solutes, enhancement in transpiration efficiency, osmotic and hormonal regulation, and delayed senescence are the strategies that are adopted by plants under water deficit. Approaches for drought stress alleviations are breeding strategies, molecular and genomics perspectives with special emphasis on the omics technology alteration i.e., metabolomics, proteomics, genomics, transcriptomics, glyomics and phenomics that improve the stress tolerance in plants. For drought stress induction, seed priming, growth hormones, osmoprotectants, silicon (Si), selenium (Se) and potassium application are worth using under drought stress conditions in plants. In addition, drought adaptation through microbes, hydrogel, nanoparticles applications and metabolic engineering techniques that regulate the antioxidant enzymes activity for adaptation to drought stress in plants, enhancing plant tolerance through maintenance in cell homeostasis and ameliorates the adverse effects of water stress are of great potential in agriculture.

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Section: Effect Of Drought Stress On Plantsmentioning

confidence: 99%

Section: Effect Of Drought Stress On Plantsmentioning

confidence: 99%

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Seleiman

Al-Suhaibani

Ali

et al. 2021

Plants

855

383

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“…The risk of irreversible injuries in cells may increase under severe water deficit (Gallé et al, 2007). To prevent damage, plant cells have evolved various drought acclimation and adaptation processes such as antioxidant defenses which could enhance their adaptability to survive during drought stress (Blum, 2017;Wei et al, 2019;Miranda et al, 2020). The antioxidant system is a complex mechanism composed of enzymes (e.g., superoxide dismutase, catalase, ascorbate peroxidase, and dehydroascorbate reductase) and various molecules (ascorbate, glutathione, and proline).…”

Section: Introductionmentioning

confidence: 99%

Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit

et al. 2021

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The triploidy has proved to be a powerful approach breeding programs, especially in Citrus since seedlessness is one of the main consumer expectations. Citrus plants face numerous abiotic stresses including water deficit, which negatively impact growth and crop yield. In this study, we evaluated the physiological and biochemical responses to water deficit and recovery capacity of new triploid hybrids, in comparison with diploid hybrids, their parents (“Fortune” mandarin and “Ellendale” tangor) and one clementine tree used as reference. The water deficit significantly decreased the relative water content (RWC) and leaf gas exchange (Pnet and gs) and it increased the levels of oxidative markers (H2O2 and MDA) and antioxidants. Compared to diploid varieties, triploid hybrids limited water loss by osmotic adjustment as reflected by higher RWC, intrinsic water use efficiency (iWUE Pnet/gs) iWUE and leaf proline levels. These had been associated with an effective thermal dissipation of excess energy (NPQ) and lower oxidative damage. Our results showed that triploidy in citrus enhances the recovery capacity after a water deficit in comparison with diploids due to better carboxylation efficiency, restored water-related parameters and efficient antioxidant system.

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“…× Poncirus trifoliata (L.) Raf. ], are currently, the most important rootstock in the Brazilian citrus industry ( Carvalho S. A. et al, 2019 ; Miranda et al, 2020 ). These rootstocks are between the 21 major world rootstocks in current use, along with “Cleopatra” ( C. reshni Hort.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, “Rangpur” lime is compatible with most commercial citrus scions and is tolerant to the citrus Tristeza virus (CTV) ( Pompeu Junior, 2005 ). Further, “Rangpur” lime is drought tolerant ( Pedroso et al, 2014 ; Miranda et al, 2020 ). This last trait has gained more attention due to climate changes and the need for plants to adapt to a wide range of environmental conditions ( Alfaro et al, 2021 ; Aparicio-Durán et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

Cruz

Neves²,

Carvalho³

et al. 2021

Front. Plant Sci.

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Rootstocks modulate several characteristics of citrus trees, including vegetative growth, fruit yield and quality, and resistance or tolerance to pests, diseases, soil drought, and salinity, among other factors. There is a shortage of scion and rootstock cultivars among the combinations planted in Brazil. “Ponkan” mandarin and “Murcott” tangor grafted on “Rangpur” lime comprise the majority of the commercial mandarin orchards in Brazil. This low genetic diversity of citrus orchards can favor pest and disease outbreaks. This study aimed to evaluate the agronomic performance, Huanglongbing (HLB) tolerance, and fruit quality of “Emperor” mandarin on five different rootstocks for nine cropping seasons under the subtropical soil-climate conditions of the North region of the state of Paraná, Brazil. The experimental design was a randomized block, with six replications, two trees per block, and five rootstocks, including “Rangpur” lime, “Cleopatra,” and “Sunki” mandarins, “Swingle” citrumelo, and “Fepagro C-13” citrange. The evaluations included tree growth, yield performance, fruit quality, and HLB disease incidence. “Emperor” mandarin trees grafted on “Rangpur” lime and “Swingle” citrumelo had early fruiting and high yield efficiency. “Rangpur” lime also induced the lowest tree growth, but low fruit quality. Trees on “Swingle” citrumelo and “Fepagro C-13” citrange showed low scion and rootstock affinity and produced fruits with high total soluble solids (TSS), with a lower number of seeds for those from trees on “Fepagro C-13” citrange. “Cleopatra” and “Sunki” mandarins induced higher juice content, while fruits from trees on “Cleopatra” also had higher TSS/titratable acidity (TA) ratio. “Emperor” mandarin trees were susceptible to HLB regardless of the rootstocks. Overall, “Cleopatra” and “Sunki” mandarins, “Swingle” citrumelo, and “Fepagro C-13” are more suitable rootstocks for “Emperor” mandarin under Brazilian subtropical conditions than “Rangpur” lime.

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Root Osmotic Adjustment and Stomatal Control of Leaf Gas Exchange are Dependent on Citrus Rootstocks Under Water Deficit

Cited by 44 publications

References 38 publications

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit

Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

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