Fungitoxicity in pollen grains

Pandey, D. K.; Tripathi, R. N.; Tripathi, R. D.; Dixit, Shalini

doi:10.1080/00173138309429911

Cited by 19 publications

(9 citation statements)

References 4 publications

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“…Attempts to train honey bees to pollen ofseveral Gramineae have been unsuccessful (von Frisch, 1923), although there are a few species from which bees do collect pollen (Vansell, 1941;Bogdan, 1962;Soderstrom and Calderon, 1971;Terrell and Batra, 1984). Pollen of many species has been shown to display anti-fungal activity (Char and Bhat, 1975;Pandey et al, 1983;Tripathi, Dubey, and Dixit, 1985) and, in a few cases, pollen allelopathy (Kanchan and Jayachandra, 1980; Thomson, Andrews, and Plowright, 1982). Chemicals implicated in these protective functions might well reside in the pollenkitt and involve phenolics (Zucker, 1983), detected in several species both here and by others (Bernhardt, 1984;Knox, 1984), and heterocyclic nitrogen compounds, which in pollen may include toxic alkaloids (Stanley and Linskens, 1974;O'Neal and Waller, 1984).…”

Section: Discussion-ofspecial Interest In This Studymentioning

confidence: 99%

Survey of Pollen and Pollenkitt Lipids–chemical Cues to Flower Visitors?

Dobson

1988

American J of Botany

104

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A chemical survey of pollen lipids was carried out to examine the composition of pollenkitt in relation to that of whole pollen and to evaluate the possible role of pollenkitt as the principal carrier of chemical cues used by flower visitors. Investigated pollen was collected from 69 angiosperm species (28 families) in California. Lipid extracts of pollenkitt and of the internal portion of pollen were analyzed for each species using thin‐layer chromatography. Neutral lipids (energy storage and essential oil constituents) were most diverse in pollenkitt, while polar lipids (mostly membrane constituents) were found almost exclusively in the internal pollen fraction. Patterns in neutral lipid compositions suggest that pollenkitt may provide pollen with species‐specific odors. Yellow pigments were observed in pollen of most species, with carotenoids predominating in pollenkitt and flavonoids in the internal fraction. Phenolic and heterocyclic nitrogen compounds were found in the lipid extracts of several species.

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Section: Discussion-ofspecial Interest In This Studymentioning

confidence: 99%

Survey of Pollen and Pollenkitt Lipids–chemical Cues to Flower Visitors?

Dobson

1988

American J of Botany

104

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“…Controls consisted of 5% Tween 20 mixed with PDA and these were handled similarly, with the exception of the volatile treatment. The radial growth of the mycelium was recorded and the efficacy of the EO was evaluated by the percentage mycelial growth inhibition, using the formulae of Pandey et al: 21 Growth inhibition (%) = DC DT DC…”

Section: Test For Antifungal Activity: Agar Dilution Methodsmentioning

confidence: 99%

Cymbopogon citratus L. essential oil as a potential antifungal agent against key weed moulds of Pleurotus spp. spawns

Mahanta

Chutia

Bordoloi

et al. 2007

Flavour & Fragrance J

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“…Ihle et al (2014) found that workers lived longest on a diet high in carbohydrates and low in protein and lipids. Some studies have shown that high concentrations of ALA in bee pollen and in the bee gut can prevent bacterial (Manning, 2001) and fungal (Pandey et al, 1983) infections, enhance bee gut health, and prolong the life of bees. As shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Nutritional Effect of Alpha-Linolenic Acid on Honey Bee Colony Development (Apis Mellifera L.)

Wang

Hang

et al. 2015

Journal of Apicultural Science

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A b s t r a c t Alpha-linolenic acid (ALA), which is an n-3 polyunsaturated fatty acid (PUFA), influences honey bee feed intake and longevity. The objective of this study was to research the effect of six dietary ALA levels on the growth and development of Apis mellifera ligustica colonies. In the early spring, a total of 36 honey bee colonies of equal size and queen quality were randomly allocated into 6 groups. The six groups of honey bees were fed a basal diet with supplementation of ALA levels at 0 (group A), 2 (group B), 4 (group C), 6 (group D), 8 (group E), and 10% (group F). In this study, there were significant effects of pollen substitute ALA levels on the feeding amounts of the bee colony, colony population, sealed brood amount, and weight of newly emerged workers (P<0.05). The workers' midgut Lipase (LPS) activity of group C was significantly lower than that of the other groups (P<0.01). The worker bees in groups B, C, and D had significantly longer lifespans than those in the other groups (P<0.05). However, when the diets had ALA concentrations of more than 6%, the mortality of the honey bees increased (P<0.01). These results indicate that ALA levels of 2 ~ 4% of the pollen substitute were optimal for maintaining the highest reproductive performance and the digestion and absorption of fatty acids in honey bees during the period of spring multiplication. Additionally, ALA levels of 2 ~ 6% of the pollen substitute, improved worker bee longevity.

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Fungitoxicity in pollen grains

Cited by 19 publications

References 4 publications

Survey of Pollen and Pollenkitt Lipids–chemical Cues to Flower Visitors?

Survey of Pollen and Pollenkitt Lipids–chemical Cues to Flower Visitors?

Cymbopogon citratus L. essential oil as a potential antifungal agent against key weed moulds of Pleurotus spp. spawns

Nutritional Effect of Alpha-Linolenic Acid on Honey Bee Colony Development (Apis Mellifera L.)

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