Mykologische untersuchungen an regenwurmexkrementen

Domsch, K. H.; Banse, Hildegard

doi:10.1016/0038-0717(72)90039-9

Cited by 29 publications

(6 citation statements)

References 18 publications

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“…These results indicated a disruption of filamentous fungi originating from leaf material during passage through the crop and gizzard of the earthworm, confirming previous reports of a major digestion of fungal hyphae in the anterior part of the gut [44]. Remaining hyphae in the foregut might then further be disrupted during passage through the earthworm gut resulting in the complete digestion of filamentous fungi during gut transit in earthworms [45]. Spores of fungi which were reported to survive gut passage [46, 47] were not detected in our studies.…”

Section: Resultssupporting

confidence: 87%

Origins and fate of fungi and bacteria in the gut of Lumbricus terrestris L. studied by image analysis

Schönholzer

Hahn

Zeyer

1999

FEMS Microbiology Ecology

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The effect of the passage through the gut of the earthworm Lumbricus terrestris L. on fungi and bacteria ingested with decomposing leaves of Taraxacum officinale and with soil was quantified using image analysis tools. Both leaf and soil material were labeled with fluorescent latex microbeads to allow a quantification of the food sources in the fore-, mid-, and hindgut of the earthworms. The content of leaf material in the gut varied in a range between 4 and 59% of the total gut content in different earthworms and the different parts of the intestine of individual animals. Filamentous fungi in the gut compartments were found to originate mainly from leaf material (7700 þ 1800 Wg (g leaf (dry wt.)) 3I ), however, the major part was disrupted before arriving in the intestine. Remaining hyphae in the foregut with a biomass of up to 900 þ 150 Wg (g gut content (dry wt.)) 3I were completely digested during passage through the earthworm gut. Spores of fungi were not detected in our studies. Bacterial cell numbers in the gut compartments ranged from 63 þ 5U10V to 327 þ 16U10 V (g gut content (dry wt.)) 3I and were significantly higher than the numbers found in the soil (50 þ 1U10V cells (g soil (dry wt.)) 3I ). Cell numbers usually increased from fore-to hindgut. This increase was not correlated to contents of organic material and only partially due to a multiplication of bacterial cells. Numbers of dividing cells accounted in total for approximately 12% of all bacteria, increasing significantly from fore-to hindgut, counts were from 10 þ 1U10V to 25 þ 2U10 V (g gut content (dry wt.)) 3I , respectively. Average cell volumes of bacteria calculated from cell size distributions in leaf and soil material differed significantly, being 0.197 and 0.063 Wm Q , respectively. In the gut compartments, average cell volumes ranged from 0.043 to 0.070 Wm Q , which may indicate the disruption of large cells originating from the leaves before arriving in the foregut. z

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Section: Resultssupporting

confidence: 87%

Origins and fate of fungi and bacteria in the gut of Lumbricus terrestris L. studied by image analysis

Schönholzer

Hahn

Zeyer

1999

FEMS Microbiology Ecology

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“…Furthermore, studies have also indicated that organic matter in the casts, once stabilized, can maintain this stabilization for many years [55] . Nevertheless, chemical mechanisms may also contribute to the stabilization since evidence shows that the casts are held together by strong interactions between mineral soil particles and SOM that is enriched in bacterial polysaccharides and fungal hyphae [56] . Earthworm casts are enriched in organic C and N, exceeding the C and N contents of the non-ingested soil by a factor of 1.5, and 1.3, respectively.…”

Section: Role Of Earthworms In Nutrient Availability To Soilmentioning

confidence: 99%

Role of earthworms in soil fertility and its impact on agriculture: A review

Akhila¹,

Entoori²

2022

Int. J. Fauna Biol. Stud.

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“…The identification was based essentially on morphology and biochemical reactions. Fungi genus were determined through morphological criteria using identification keys such as the description of mycelia and of asexual reproduction forms (Domsch et al, 1980).…”

Section: Identification Of Microbial Isolatesmentioning

confidence: 99%