Sterols in decomposing Spartina alterniflora and the use of ergosterol in estimating the contribution of fungi to detrital nitrogen1

Lee, Cindy; Howarth, Robert W.; Howes, Brian L.

doi:10.4319/lo.1980.25.2.0290

Cited by 112 publications

(55 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Probably the increasing fungal biomass had an inhibitory effect on bacterial growth. Some previous studies on microbial colonization of plant detritus in aquatic environments have shown that fungi are primary colonizers whereas bacteria are secondary colonizers (Suberkropp et al 1976;Lee et al 1980), although in other studies, bacteria were the first colonizers, as in the present study (Newell 1981;Szabó et al 2003;Ágoston-Szabó & Dinka 2005).…”

Section: Microbiological Parameterscontrasting

confidence: 51%

Decomposition of Typha angustifolia and Phragmites australis in the littoral zone of a shallow lake

Ágoston-Szabó

Dinka

2008

Biologia

View full text Add to dashboard Cite

Decomposition of air-dried live Typha angustifolia (L) stems and leaves and Phragmites australis (Cav. Trin ex Steud.) leaves and culms were studied in a shallow freshwater lake (Lake Fehér, Fertő-Hanság National Park, Hungary) using the litter bag technique. Samples were analyzed for dry mass, fiber (cellulose, hemicelluloses, lignin) and nutrient (C, N, P, S) contents, litter-associated fungal biomass (ergosterol concentration), potential microbial respiration (electron transport activity: ETS) and cellulolytic bacteria. In terms of mesh size, there were no significant differences in the examined parameters of P. australis leaves and culms and T. angustifolia stems with leaves. P. australis leaves had the highest rate of decomposition and P. australis culms the lowest. Hemicellulose degraded more rapidly than the other fibers, while the lignin had the slowest rate of decomposition. The ETS activity of the examined plant litter types increased from day 91 st to 237 th while decomposition processes were most active, ergosterol contents were high, and there were few cellulolytic bacteria. The counts of cellulolytic bacteria fluctuated during the decomposition period, they were high at the beginning then they decreased. In each case bacteria were found to be the first colonizers of plant detritus, and were followed by fungal growth.

show abstract

Section: Microbiological Parameterscontrasting

confidence: 51%

Decomposition of Typha angustifolia and Phragmites australis in the littoral zone of a shallow lake

Ágoston-Szabó

Dinka

2008

Biologia

View full text Add to dashboard Cite

show abstract

“…The accumulation of nitrogen in litter has been observed frequently during decay (Odum et al 1973, Rice & Tenore 1981, Melillo et al 1982 litter (Suberkropp et al 1976, Odum et al 1979) and have suggested that microbial and fungal biomass account for less than 20 % of the nitrogen present in decaying litter of Spartina alterniflora (Rublee et al 1978, Lee et al 1980, Marinucci 1982, Hicks 1983). Fungi contributed the major portion of microbial nitrogen in Spartina litter (Lee et al 1980, Newel1 & Hicks 1982, Marinucci et al 1983).…”

Section: Relation Of Nitrogen and Lignin Contents To Decay Ratementioning

confidence: 99%

“…l), during which 20 to 40 % of the original amount of material was removed. This initial stage presumably involved leaching of soluble organic materials (Nykvist 1959, Odum & Heywood 1978, Haines & Hanson 1979, Lee et al 1980, Montagna & Ruber 1980.…”

Section: Total Weight Lossmentioning

confidence: 99%

Decomposition in salt marsh ecosystems: phenolic dynamics during decay of litter of Spartina alterniflora

Wilson¹,

Buchsbaum²,

Valiela³

et al. 1986

Mar. Ecol. Prog. Ser.

100

View full text Add to dashboard Cite

Loss of weight and change in concentration of soluble phenolics, bound phenolics, lignins, and cell wall material were followed over 2 yr of decay in 4 types of litter of Spartina alterniflora. The pattern of weight loss showed rapid leaching during the first month, temperaturedependent decay during the first year, and little further loss during the second year. Soluble phenolics were lost throughout decomposition. Initially some soluble phenolics may become attached to cell walls; absolute increases in bound phenolics were observed in low marsh litters during the first 2 wk of decay. Lignins were lost at the slowest rate from litter material and increased in relative concentration during decay. Intraspecific differences in litter quality were small, and did not alter the pattern of decomposition among the 4 types of litter. Changes in chemical composition of litter during decay, however, were major controls of decay rates during the second and third phases of decomposition. Decreasing weight loss correlated with increasing lignin and nitrogen content. The increase in nitrogen presumably reflected synthesis of refractory nitrogen-enriched complexes. As decay continued, the litter became progressively enriched in recalcitrant lignin and nitrogen-enriched complexes and little further loss of organic matter occurred.

show abstract

“…The first phase is leaching of soluble organic matter within days, followed by the second stage of months with the biopolymers degraded and soluble organic substances released by the action of microorganisms. The third phase can take longer (years) than the first two phases, during which cellulose and lignin and other refractory organic compounds are remained [34][35][36][37]. Chen and Jiang have reported that bacteria activities played the most important roles in the late stage of plant degradation [38].…”

Section: Leaching Of Doc and Dnmentioning

confidence: 99%

Release and Microbial Degradation of Dissolved Organic Carbon and Nitrogen from Phragmites australis and Suaeda salsa in the Wetland of the Yellow River Estuary

Qi¹,

Xue²,

Wang³

2017

J Oceanogr Mar Res

View full text Add to dashboard Cite

Sterols in decomposing Spartina alterniflora and the use of ergosterol in estimating the contribution of fungi to detrital nitrogen1

Cited by 112 publications

References 21 publications

Decomposition of Typha angustifolia and Phragmites australis in the littoral zone of a shallow lake

Decomposition of Typha angustifolia and Phragmites australis in the littoral zone of a shallow lake

Decomposition in salt marsh ecosystems: phenolic dynamics during decay of litter of Spartina alterniflora

Release and Microbial Degradation of Dissolved Organic Carbon and Nitrogen from Phragmites australis and Suaeda salsa in the Wetland of the Yellow River Estuary

Contact Info

Product

Resources

About