Light and temperature induce variations in the density and ultrastructure of the secretory spaces in the diesel-tree (Copaifera langsdorffii Desf.—Leguminosae)

Rodrigues, Tatiane Maria; Buarque, Plácido Fabrício Silva Melo; Coneglian, Ademilson; Reis, Débora Costa

doi:10.1007/s00468-013-0976-8

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…With respect to organelle morphology, there are noticeable differences in terms of chloroplast and mitochondria between leaf and root cells of F. ferulaeoides seedlings cultivated under drought 7 conditions or normal water conditions. These changes confirm that drought is detrimental to the photosystem and energy supply system of F. ferulaeoides (Rodrigues et al 2014).…”

Section: Discussionsupporting

confidence: 59%

Effects of drought stress on seed germination and early seeding growth in Ferula ferulaeoides (Steud.) Korov.

Ma,

Liao,

Zhu

et al. 2024

Braz. J. Bot

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Ferula ferulaeoides (Steud.) Korov. is a well-known perennial herb whose growth and distribution are negatively affected by drought. However, the seed germination stage and early seedling growth stage, which may be more sensitive to drought, have not been studied in detail. To reveal the effects of drought on seeds and seedlings of F. ferulaeoides, five water stress conditions induced by PEG-6000 treatment at five different concentrations (0, 5%, 10%, 15%, and 20%) were developed, in a completely randomized order for seeds and seedlings. The results revealed that drought stress significantly reduced seed germination percentage, and that no seeds germinated at a PEG-6000 concentration of 20%. In histomorphology, it was noted that the chloroplast of seedling leaf cells was deformed and vacuolized.The mitochondria structure was damaged in the leaf and root cells. By further analyzing part of the physiological and biochemical parameters of seedlings under drought stress, we showed that antioxidant enzymes such as catalase, peroxidase, and superoxide dismutase responded rapidly under drought stress. The seedlings accumulated a large amount of malondialdehyde under high drought stress. Additionally, drought stress affected the accumulation of proline and photosynthetic pigments.To summarize, drought stress affects seed germination and seedling growth in F. ferulaeoides; heavy drought should be avoided during the germination stage; and seedlings should not be exposed to long-term drought or severe drought. Our results provide information that may be useful for future artificial cultivation.

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Section: Discussionsupporting

confidence: 59%

Effects of drought stress on seed germination and early seeding growth in Ferula ferulaeoides (Steud.) Korov.

Ma,

Liao,

Zhu

et al. 2024

Braz. J. Bot

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“…We observed that plants exposed to 100 g L À1 of PEG exhibited mitochondria with swollen cristae. Morphological changes in mitochondrial cristae appear to be a common feature in plants under different stresses (Ciamporova, 1976;Rodrigues et al, 2014). Morphological alterations in mitochondria may indicate changes in the mitochondrial energy status resulting from decreases in ATP levels (Kandasamy and Kristen, 1989;Pareek et al, 1997) and increases in the levels of ROS (Li et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

PEG-induced osmotic stress in Mentha x piperita L.: Structural features and metabolic responses

Búfalo

Rodrigues

Almeida

et al. 2016

Plant Physiology and Biochemistry

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The present study investigated whether osmotic stress induced by the exposure of peppermint (Mentha x piperita L.) to moderate and severe stress for short periods of time changes the plant's physiological parameters, leaf anatomy and ultrastructure and essential oil. Plants were exposed to two levels of polyethyleneglycol (50 g L(-1) and 100 g L(-1) of PEG) in a hydroponic experiment. The plants exposed to 50 g L(-1) maintained metabolic functions similar to those of the control group (0 g L(-1)) without changes in gas exchange or structural characteristics. The increase in antioxidant enzyme activity reduced the presence of free radicals and protected membranes, including chloroplasts and mitochondria. In contrast, the osmotic stress caused by 100 g L(-1) of PEG inhibited leaf gas exchange, reduced the essential oil content and changed the oil composition, including a decrease in menthone and an increase in menthofuran. These plants also showed an increase in peroxidase activity, but this increase was not sufficient to decrease the lipid peroxidation level responsible for damaging the membranes of organelles. Morphological changes were correlated with the evaluated physiological features: plants exposed to 100 g L(-1) of PEG showed areas with collapsed cells, increases in mesophyll thickness and the area of the intercellular space, cuticle shrinkage, morphological changes in plastids, and lysis of mitochondria. In summary, our results revealed that PEG-induced osmotic stress in M. x piperita depends on the intensity level of the osmotic stress applied; severe osmotic stress changed the structural characteristics, caused damage at the cellular level, and reduced the essential oil content and quality.

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“…Light intensity and temperature significantly influenced the cellular features of secretory canals in Copaifera langsdorffii seedlings. Seedlings grown at 25℃ had higher density of secretory canals than those grown at 15 and 35 ℃ (Rodrigues et al 2014). The anatomical features of secretory canals such as diameter and density of secretory canals may serve as reliable indicators for oleoresin production (Rosner and Hannrup 2004).…”

Section: Introductionmentioning

confidence: 97%

Variation in oleoresin yield and anatomical traits among Sindora glabra populations in Hainan, China

Yang

et al. 2020

Trees

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Key message Geography and tree diameter were the major factors in determining oleoresin yield in Sindora glabra. The tangential diameter and area of secretory canals are reliable indicators of the oleoresin amount. Abstract Sindora glabra is a native tropical plant of China that exudes copious amounts of oleoresin from wounds on the stem. Elucidation of the mechanism affecting the oleoresin yield is of particular importance for development and selection of superior germplasm. In this study, the variation in oleoresin yield and anatomical traits of the stem of S. glabra were investigated in four main natural populations in Hainan. The results showed that annual oleoresin yield varied considerably among populations. The oleoresin yield exhibited an increasing trend with the increment of tree stem diameter until the diameter was over 80 cm. Moreover, oleoresin production in the wet season was higher than in dry season. The analysis of oleoresin chemical composition indicated that the four populations belong to the same chemotype despite the amount of four types of sesquiterpenes varying greatly among areas. Anatomical analysis revealed that quantitative traits of secretory canals including tangential diameter, area, density and frequency were significantly different among populations and tree diameters. Furthermore, the tangential diameter and area of secretory canals were positively correlated with oleoresin yield. These results suggested that the tangential diameter and area of secretory canals are reliable indicators of the oleoresin amount and can be used for selection purposes in S. glabra.

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Light and temperature induce variations in the density and ultrastructure of the secretory spaces in the diesel-tree (Copaifera langsdorffii Desf.—Leguminosae)

Cited by 8 publications

References 44 publications

Effects of drought stress on seed germination and early seeding growth in Ferula ferulaeoides (Steud.) Korov.

Effects of drought stress on seed germination and early seeding growth in Ferula ferulaeoides (Steud.) Korov.

PEG-induced osmotic stress in Mentha x piperita L.: Structural features and metabolic responses

Variation in oleoresin yield and anatomical traits among Sindora glabra populations in Hainan, China

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