Biometric, physiological and anatomical responses of Passiflora spp. to controlled water deficit

Souza, Plácido Ulisses; Lima, Lucas Kennedy Silva; Soares, Taliane Leila; Jesus, O. N. de; Filho, M. A. Coelho; Girardi, Eduardo Augusto

doi:10.1016/j.scienta.2017.10.019

Cited by 49 publications

(32 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Functions of calcium oxalate include calcium regulation/sequestration, ion balance regulation, detoxification of high levels of heavy metals and oxalic acid, enhancement of absorption/reflection of incident radiation, protection from herbivory, and release of carbon when stomatal conductance is low (Li et al, 2019). When stomatal conductance is low, the number of druses was found to increase in the phloem of Passiflora edulis, Passiflora setacea, Passiflora gibertii and Passiflora cincinatta (Souza et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Morphology of yellow passion fruit seedlings submitted to triazole induced growth inhibition

et al. 2019

View full text Add to dashboard Cite

Inhibiting seedling vegetative growth may be a strategy for improving modulation against biotic and abiotic stresses after transplanting. The objective of this study was to evaluate morphological responses of yellow passion fruit (Passiflora edulis) seedlings to growth inhibition resulted from the application of an inhibitor of gibberellin biosynthesis. The experiment was carried out in a greenhouse using seedlings grown in 290 cm3 polyethylene tubes. At 40 days after emergence, trays containing the seedlings were immersed in solutions at concentrations of 0, 40, 80, 120 and 160 mg (Paclobutrazol) PBZ L-1 up to substrate saturation. These five treatments were laid out in a randomized block design with four replicates. At 15, 30 and 45 days after PBZ application (DAA), basal stem diameter was measured; at 45 DAA, stem diameter, individual leaf area, specific leaf area, root diameter and root volume were measured, lignin content and the anatomy of leaves, stems, and roots were analyzed. Triazole-induced anatomical alterations in stems, leaves and roots cause morphological traits and intensify the specific reagent staining of phenolic compounds and lignin in yellow passion fruit (Passiflora edulis) seedlings.

show abstract

Section: Resultsmentioning

confidence: 99%

Morphology of yellow passion fruit seedlings submitted to triazole induced growth inhibition

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Our focus on the ultrastructure of the spongy parenchyma cells was motivated by their important function in photosynthesis, during both light and dark phases. Such cells provide uniformity in light absorption by the leaves [107]. Due to their organization, with spaces on the top of the lower epidermis (wherein more stomata are usually located), spongy parenchyma cells are more efficient in performing dark phase photosynthesis-CO 2 fixation [108].…”

Section: Discussionmentioning

confidence: 99%

Effects of Foliar Treatment with a Trichoderma Plant Biostimulant Consortium on Passiflora caerulea L. Yield and Quality

et al. 2020

View full text Add to dashboard Cite

The influence of spore concentration on the ability of a Trichoderma consortium to colonize the Passiflora caerulea phyllosphere was evaluated by determining the effects of foliar treatments with two spore concentrations, in two repeated treatments, on the morphological, physiological, and ultrastructural characteristics, and on the yield and quality of P. caerulea. The studied crop quality features were related to its nutraceutical use: the accumulation of polyphenols and flavonoids, antioxidant activity, and effects on mouse fibroblast L929 cells. The Trichoderma consortium consisted of two strains, T. asperellum T36b and T. harzianum Td50b, and the concentrations used were 106 colony forming units (cfu)/mL and 108 cfu/mL. As a reference treatment, a commercial product that was based on herbs and algal extracts was used. As compared to the negative control, the treatment with the Trichoderma consortium at 108 cfu/mL concentration determines the accumulation of higher level of polyphenols and flavonoids and increased antioxidant activity. This enhancement of P. caerulea quality characteristics after treatment with the higher concentration of Trichoderma consortium was associated with larger leaves, increased number and size of chloroplasts, improved plant physiology characteristics, and an increased yield. The treatment with high concentration of Trichoderma consortium spores promotes phyllosphere colonization and benefits both crop yield and quality.

show abstract

“…Some studies indicated that slight variations in the leaf thickness determined significant modifications in gas exchange in some plant species, while others demonstrated large plasticity in terms of leaf thickness with little variation in photosynthetic capacity [70]. Studies on leaf anatomical characteristics of Passiflora species showed that P. setacea was the one, among the five species of the same genera investigated, with the highest survivability under water limitation due to its capacity to tolerate severe drought stress [71]. In our study, Viburnum plants subjected to drought conditions showed an increase in palisade parenchyma thickness; this is in accordance to Guerfel et al [72], who observed in two Tunisian olive cultivars subjected to water stress an increase in palisade parenchyma thickness during water stress in drought-tolerant plants.…”

Section: Discussionmentioning

confidence: 99%

Effects of Water Stress on Gas Exchange, Water Relations and Leaf Structure in Two Ornamental Shrubs in the Mediterranean Area

et al. 2019

View full text Add to dashboard Cite

One of the main problems in the Mediterranean area is the long dry season, and hence there is a need to individuate plants that are tolerant to low water availability. The mechanisms adopted by different plant species to overcome drought stress conditions and reduce water loss could allow the identification of tolerant species to drought stress, thereby increasing the sustainability of ornamental plant utilization in green areas. In this regard, the aim of this study was to investigate the morphological, physiological, and anatomical responses of Polygala myrtifolia L. and Viburnum tinus L. 'Lucidum' irrigated under different irrigation deficits. In pot plants, four water regimes were adopted (10%, 20%, 30% and 40% of water container capacity (WC)). Drought stress significantly reduced the biomass accumulation in both shrubs. In Viburnum, total dry biomass reduction was observed only in 10% WC with a reduction by 33%, while in Polygala, this was observed both in 20% WC and 10% WC (~48%). The higher deficit irrigation conditions improve the root-to-shoot ratio, which was increased in Polygala 20% WC (by 20%) but not in Viburnum ones. The latter species shows higher drought tolerance, as demonstrated by the gas exchange values, chlorophyll fluorescence, leaf structure, and water relationship.Mediterranean native shrub species to water stress [5], also allowing the identification of new ornamentals suitable for sustainable landscaping. The ability of Mediterranean shrubs to tolerate severe drought conditions, one of the main factors affecting plant survival and species distribution, increases their use in the revegetation of semiarid areas [6].Different species growing in Mediterranean areas could provide good candidates for ornamental plants regarding their tolerance to water shortages. Drought stress harms aesthetic aspects and consequently affects ornamental plant quality. The latter in fact mainly depends on visual appearance, identified as leaf size and color, flower characteristics, number and longevity [7]. Drought stress can also dramatically reduce plant survival after transplantation with high economic losses and impacts on the aesthetic quality of green areas [8].The successful establishment of ornamental green areas in Mediterranean regions can be achieved through the adequate selection of plant species characterized by a high tolerance to water stress [9]. Tolerant plants are those plants that have the ability to modify their metabolism to guarantee vital and essential physiological processes with a limited amount of water [10]; most of them are Mediterranean-native species.Drought-tolerant plants are able to modify, during water stress conditions, their morphology and to activate physiological and biochemical processes able to cope with water deficit [11,12]. The morphological modifications linked to drought stress reduce shoot and leaf growth, although the modality and the intensity of these phenomena depend on the genotypes, even within the same species [12]. Previous results showed that in Lantana c...

show abstract

Biometric, physiological and anatomical responses of Passiflora spp. to controlled water deficit

Cited by 49 publications

References 42 publications

Morphology of yellow passion fruit seedlings submitted to triazole induced growth inhibition

Morphology of yellow passion fruit seedlings submitted to triazole induced growth inhibition

Effects of Foliar Treatment with a Trichoderma Plant Biostimulant Consortium on Passiflora caerulea L. Yield and Quality

Effects of Water Stress on Gas Exchange, Water Relations and Leaf Structure in Two Ornamental Shrubs in the Mediterranean Area

Contact Info

Product

Resources

About