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145 results for “trichomes”
FIGURE 1 in Evolution of trichome morphology in Mimosa (Leguminosae-Mimosoideae)
FIGURE 1. Possible scenario of trichome evolution in Mimosa as proposed by Barneby (1991). (A) simple. (B) glandular. (C) plumose. (D) verruciform. (E) sessile medusiform. (F) stalked medusiform. (G) stellate. (H) stellate-lepidote. (I) lepidote. Arrows indicate directions of putative morphological change.
FIGURE 2. A in Extension of the Cryptanthus range in Northeastern Brazil with new findings in the phenotypic variation including changes in the trichome's distribution, thus enhancing the understanding of the Cryptanthus zonatus complex (Bromeliaceae)
FIGURE 2. A. Two color morphs (maroon and green – indicated by the arrow) growing intermingled in the understory of Mata Estrela. B. Maroon color morph plant growing next to a banded individual that present a basal glabrous leaf (arrow) at Parque das Dunas. C. Signs of trichome loss on the older leaves (arrow), by a maroon banded individual from Parque das Dunas. D. Green individual showing dark red/maroon marks on the base of the leaves, Parque das Dunas. E. Two rosettes showing similar pigmentation (green along the center and dark red/maroon at the margins) but contrasting in the banded-lepidote versus glabrous adaxial surface. F. Individual displaying the colors green and wine-red spots (scale = 14 cm). G. Blooming individual of the banded form presenting a staminate flower. H. Bisexual flower of the maroon morph. I. Basal stolon (arrow), in the maroon morph. J. Basal stolon (arrow), in the banded morph.
FIGURE 1 in Extension of the Cryptanthus range in Northeastern Brazil with new findings in the phenotypic variation including changes in the trichome's distribution, thus enhancing the understanding of the Cryptanthus zonatus complex (Bromeliaceae)
FIGURE 1. Map of Rio Grande do Norte state indicating the two new occurrences of Cryptanthus zonatus.
FIGURE 2. A–K. Croton campanulatus. A. Flowering branch. B. acropetiolar gland. C. lepidote subentire trichomes. D. Pistillate flower. E. Gynoecium detail. F in Taxonomic revision of Croton section Cleodora (Euphorbiaceae)
FIGURE 2. A–K. Croton campanulatus. A. Flowering branch. B. acropetiolar gland. C. lepidote subentire trichomes. D. Pistillate flower. E. Gynoecium detail. F. Disk at the base of the gynoecium. G. Fruit. H. Seed. I. Staminate flower. J. Pistillate flower aestivation. K. Staminate flower aestivation. (Caruzo et al. 93; illustration from Caruzo et al. 2008).
FIGURE. Jamesonia congesta (Christ) Christenh., House et al., 4053 (EAP). A. 2-pinnate-pinnatifid laminae; B. Vein ending in a small marginal fold; C. Brownish rhizome trichomes. in Ferns and Lycophytes of Honduras: A new annotated checklist
FIGURE. Jamesonia congesta (Christ) Christenh., House et al., 4053 (EAP). A. 2-pinnate-pinnatifid laminae; B. Vein ending in a small marginal fold; C. Brownish rhizome trichomes.
FIGURE. General characters in Myrcia. A: Asymmetrical anther thecae; B: Symmetrical anther thecae; C: Simple trichome; D: Dibrachiate trichome; E: 2-locular ovary; F: 3-locular ovary; G: Hypanthium persistent in the fruit, hollow; H: Hypanthium persistent in the fruit, beaked and filled by tissue; I. Homogeneous gland dots; J: Heterogeneous gland dots; K: Tertiary veins densely reticulated; L: Tertiary veins sparsely reticulated. (A: Oliveira 841; B: Moreira 404; C: Lindeman 1640; D: Hatschbach 13407; E: Bonaldi 502; F: Hatschbach 8646; G: Silva 4334; H: Brotto 2434; I: Hatschbach 61476; J: Carrião s.n. UPCB 28305; K: Kuniyoshi 4844; L: Michelon 1327). in Myrcia (Myrtaceae) in the state of Paraná, Brazil
FIGURE. General characters in Myrcia. A: Asymmetrical anther thecae; B: Symmetrical anther thecae; C: Simple trichome; D: Dibrachiate trichome; E: 2-locular ovary; F: 3-locular ovary; G: Hypanthium persistent in the fruit, hollow; H: Hypanthium persistent in the fruit, beaked and filled by tissue; I. Homogeneous gland dots; J: Heterogeneous gland dots; K: Tertiary veins densely reticulated; L: Tertiary veins sparsely reticulated. (A: Oliveira 841; B: Moreira 404; C: Lindeman 1640; D: Hatschbach 13407; E: Bonaldi 502; F: Hatschbach 8646; G: Silva 4334; H: Brotto 2434; I: Hatschbach 61476; J: Carrião s.n. UPCB 28305; K: Kuniyoshi 4844; L: Michelon 1327).
FIGURE 16. Opuntia hyptiacantha. A. Elliptical cladode. B. Elliptical areola, short black trichomes. C. Erect and diffuse white spines with yellowish apex. D in Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae)
FIGURE 16. Opuntia hyptiacantha. A. Elliptical cladode. B. Elliptical areola, short black trichomes. C. Erect and diffuse white spines with yellowish apex. D. Acute flower buds, reddish segments of perianth with auminate apex. E. Flower button, side view, elliptical pericarpel. F. Flower in anthesis.
FIGURE 12. Opuntia streptacantha. A. Oval cladode. B. Elliptical areola, short black trichomes. C in Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae)
FIGURE 12. Opuntia streptacantha. A. Oval cladode. B. Elliptical areola, short black trichomes. C. Adpressed and diffuse white spines with gray and black tones. D. Acute floral buttons, green segments of perianth with reddish acuminate apex. E. Flower button, side view, elliptical pericarpel. F. Flower in anthesis.
FIGURE 8. Opuntia lasiacantha. A. Obovate cladode. B. Elliptical areola, short black trichomes. C. Erect and diffuse yellowish white spines. D in Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae)
FIGURE 8. Opuntia lasiacantha. A. Obovate cladode. B. Elliptical areola, short black trichomes. C. Erect and diffuse yellowish white spines. D. Acute flower buds, red segments of perianth with acuminate apex. E. Flower button, side view, slightly cylindrical pericarpel. F. Flower in anthesis.
FIGURE 4. Opuntia megacantha. A. Elliptical cladode. B. Elliptical areola, short black trichomes. C in Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae)
FIGURE 4. Opuntia megacantha. A. Elliptical cladode. B. Elliptical areola, short black trichomes. C. White, radial, and diffuse spines with yellowish apex. D. Acute flower buds, green perianth segments with reddish acuminate apex, obovate pericarpel. E. Flower button, top view. F. Flower in anthesis.
Fig. 1 in Antifeedant, cytotoxic, and anti-inflammatory neo-clerodane diterpenoids in the peltate glandular trichomes and fresh leaves of Ajuga forrestii
Fig. 1. Morphology and laser microdissection of the peltate glandular trichomes (GTs) of A. forrestii. (A) An A. forrestii plant growing in its natural habitat. (B) An A. forrestii plant blooming. (C) Peltate GTs on the leaf surface. (D) Intact peltate GTs before dissection. (E) The remaining leaf tissue after dissection of a peltate GT. (F) Peltate GTs collected in the cap of a centrifuge tube. (G) Other leaf tissues (LTs) without glandular trichomes before dissection. (H) The remaining leaf tissue after dissection of the LTs. (I) LTs collected in the cap of a centrifuge tube. Panels (C-I) are micrographs.
Fig. 2 in Antifeedant, cytotoxic, and anti-inflammatory neo-clerodane diterpenoids in the peltate glandular trichomes and fresh leaves of Ajuga forrestii
Fig. 2. Chemical structures of compounds 1–14 identified in the peltate GTs and whole leaves of A. forrestii.
Fig. 4 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior
Fig. 4. Effect of pure β-caryophyllene and α-humulene on M. euphorbiae feeding performance (A–C) and choice behavior (D). Different amounts of a mix of pure β-caryophyllene and α-humulene (3:1 ratio) were added to the feeding diet. The data in (A), (B), and (C) show the comparison of Kaplan-Meier survival curves (logrank test, α =0.05), gel saliva density (Tukey's HSD, α =0.05), and number of honeydew drops (ANOVA, α = 0.05), respectively, upon addition of different amounts of pure sesquiterpenes to the artificial diet. The data in (D) represent the behavioral responses of aphid alatae to odors from leaves of c.v. M82 alone (right bars) or from leaves of c.v. M82 leaves in combination with different amounts of a mix of pure β-caryophyllene and α-humulene (left bars) (Chi-square goodness of fit; *, P <0.05; **, P <0.01).
Fig. 5 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior
Fig. 5. α-Santalene and α-bergamotene producing tomato introgression line affects performance, feeding and choice behavior of M. euphorbiae. (A) Performance of M. euphorbiae apterae arrested on the leaf surface of S. lycopersicum LA4024, S. habrochaites LA1777, and the introgression lines LA3935, LA3934, LA3936, and LA3937. Values for longevity and fecundity are presented as mean ± SE and compared by Tukey's HSD test (α =0.05). (B) Kaplan-Meier estimates of survivorship of M. euphorbiae apterae feeding on artificial diets containing leaf dip extracts of S. lycopersicum LA4024, S. habrochaites LA1777, and the introgression line LA3935 (logrank test, α = 0.05). (C) and (D) Box plots represent means ± SE of gel saliva density (cm 2) and number of honeydew drops, respectively. Tukey's HSD tests (α = 0.05) are used for post-hoc analysis. (E) Choice of M. euphorbiae alatae between odors from LA4024 leaves alone (left bars) and from LA4024 leaves with added leaf dip extracts (100 and 300 μL) from the introgression line LA3935 or S. habrochaites LA1777 (right bars) (Chi-square goodness of fit; *, P <0.05; **, P <0.01).
Fig. 3 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior
Fig. 3. Choice behavior of M. euphorbiae alatae in an open Y-track olfactometer. (A) Choice of aphids between air and odors from leaves of different S. lycopersicum cultivars or S. habrochaites accessions. (B) Choice of aphids between odors from leaves of c.v. M82 and different S. habrochaites accessions. (C) Choice of aphids between odors from leaves of c.v. M82 leaves alone (left bars) and from leaves of c.v. M82 leaves with added S. habrochaites leaf dip extracts (right bars). Asterisks following each pair of bars indicates significant differences according to Chi-square goodness of fit (⋅, P <0.07; *, P <0.05; **, P <0.01).
Fig. 2 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior
Fig. 2. Feeding performance of M. euphorbiae apterae on artificial diets containing leaf dip extracts of S. lycopersicum c.v. M82 and different S. habrochaites accessions (MTBE solvent control). (A) Kaplan-Meier estimates of survivorship and analysis of log-rank test (α =0.05). (B) Box and violin plots represent mean ± SE of gel saliva density (cm 2) and the probability density, respectively. (C) Number of honeydew drops accumulated in the feeding chambers. Asterisks in (B) and (C) represent significant differences between diets with leaf dip extracts and control based on Dunnett's test (⋅, P <0.08; *, P <0.05; **, P <0.01; ***, P <0.001).
Fig. 1 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior
Fig. 1. Longevity (A) and fecundity (B) of M. euphorbiae apterae arrested on the leaf surface of two S. lycopersicum cultivars and different S. habrochaites accessions. Solanum habrochaites accessions represent five chemotypes characterized by the production of different sesquiterpenes in their glandular trichomes. Values for longevity and fecundity are presented as mean ± SE. Different letters indicate that logarithmic values were significantly different (Tukey's HSD test, α = 0.05).
Fig. 4 in Peltate glandular trichomes of Colquhounia vestita harbor diterpenoid acids that contribute to plant adaptation to UV radiation and cold stresses
Fig. 4. Polyalthic acid improved photosynthetic efficiency (A–F) and expression of peroxidative enzyme genes (G) of A. thaliana seedlings upon UV radiation. The different letters a, b and c represent significant differences according to one-way ANOVA (p <0.05). Error bars indicate the standard error of the mean (n = 5).
Fig. 3 in Peltate glandular trichomes of Colquhounia vestita harbor diterpenoid acids that contribute to plant adaptation to UV radiation and cold stresses
Fig. 3. Polyalthic acid improved the resistance of A. thaliana to UV radiation and cold stresses. (A and D) A. thaliana seedlings grown in medium containing DMSO (A) and polyalthic acid (D) under normal growth conditions. (B and E) A. thaliana seedlings grown in medium containing DMSO (B) and polyalthic acid (E) after UV radiation stress. (C and F) A. thaliana seedlings grown in medium containing DMSO (C) and polyalthic acid (F) after cold stress. (G) The biomass of A. thaliana seedlings treated with polyalthic acid upon UV radiation and cold stresses. (H) MDA content of A. thaliana seedlings treated with polyalthic acid upon UV radiation and cold stresses. The different letters a, b, c and d represent significant differences according to one-way ANOVA (p <0.05). Error bars indicate the standard error of the mean (n = 5).
Fig. 6. A in Peltate glandular trichomes of Colquhounia vestita harbor diterpenoid acids that contribute to plant adaptation to UV radiation and cold stresses
Fig. 6. A hypothetical working model for the roles of polyalthic acid in peltate GTs of C. vestita in enhancing the plant adaptation to abiotic stresses. Dashed arrows indicate the possible pathway in this work, and solid arrows represent the pathways that have already been verified in this work.
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