Claim · model-written summary
The four fungal species completely macerated alder leaf strips within 9 to 12 days at stream pH 7.
- Interactor
- four speciese0other
- Outcome
- macerated alder-leaf strips totallye0
- Value
- 9 to 12 de0
- Qualifier
- stream pH 7e0
AlnusNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The four species macerated alder-leaf strips totally within 9 to 12 d at stream pH 7, utilizing predominantly pectin lyases and pectin esterases.”
Title
Pectinases in Leaf Degradation by Aquatic Hyphomycetes: the Enzymes and Leaf Maceration
A.-C. Chamier; P. A. Dixon Microbiology 1982. doi:10.1099/00221287-128-10-2469
Other claims from this paper (13)
- Observation All seven tested aquatic hyphomycetes produced polygalacturonases and pectin lyases.
- Observation Aquatic hyphomycete polygalacturonases were constitutive.
- Intervention effect Pectic substrates at pH 6.5 and above induced pectin lyases in aquatic hyphomycetes.
- Observation Some aquatic hyphomycetes grew on pectic substrates at pH 5 and pH 7.
- Observation Other aquatic hyphomycetes grew on pectic substrates only at pH 7.
- Intervention effect Tricladium splendens grew equally well on polypectate and glucose.
- Observation Tricladium splendens produced three endo-polygalacturonase isoenzymes.
- Observation Articulospora tetracladia produced three endo-polygalacturonase isoenzymes.
- Observation Tetrachaetum elegans secreted a presumed exo-pectin lyase and a pectin esterase.
- Observation Mycocentrospora angulata secreted an endo-pectin lyase and a pectin esterase.
- Mechanism Pectin lyases and pectin esterases were the predominant enzymes used in alder leaf maceration.
- Mechanism Ca2+ stimulates these enzymes and may explain rapid plant decay in calcium-rich streams at pH 6.5 and above.
- Association Fungal occurrence on experimental stream leaf packs did not appear related to pectolytic capability.