In vitro degradation of Ilex aquifolium leaf cutin by phylloplane fungi

Dickinson, Claire; Macnamara, O. C.

doi:10.1016/s0007-1536(83)80086-2

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Leaf and stem waxes on residues might be used as a source of carbon by some fungi in nature, since pure-culture evidence shows that such use, including use by leaf-inhabiting fungi, is possible (Dickinson and MacNamara, 1983;Martin and Juniper, 1970). Such decomposition could perhaps decrease water repellence at plant surfaces and thus facilitate movement of water from the environment into a previously dried leaf or stem and thereby favor microbial decomposition of underlying cells.…”

Section: Discussionmentioning

confidence: 99%

Fungal associations on field-weathered plants and their role in residue decomposition

1986

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Section: Discussionmentioning

confidence: 99%

Fungal associations on field-weathered plants and their role in residue decomposition

1986

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“…Phyllosphere fungi have been shown to have abilities to utilize various organic compounds as carbon sources, including simple sugars, oligosaccharides, polymer carbohydrates, such as cellulose and hemicellulose, lignin and derivatives, cutin, pectins, lipids, waxes, and proteins (Hogg 1966;McBride 1972;Carroll and Petrini 1983;Dickinson and Macnamara 1983;Petrini et al 1991Petrini et al , 1992Sieber-Canavesi et al 1991;White et al 1991;Kumaresan and Suryanarayanan 2002;Lumyong et al 2002;Tomita 2003;Urairuj et al 2003;Kudanga and Mwenje 2005). Carroll and Petrini (1983) tested the patterns of substrate utilization by some endophytes from coniferous foliages and divided these fungi into two groups.…”

Section: Substrate Utilization and Decomposing Abilitymentioning

confidence: 99%

Extracellular cellulase production by tropical isolates of Aureobasidium pullulans

Kudanga

Mwenje²

2005

Can. J. Microbiol.

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Cellulase production by Aureobasidium pullulans from the temperate regions has remained speculative, with most studies reporting no activity at all. In the current study, tropical isolates from diverse sources were screened for cellulase production. Isolates were grown on a synthetic medium containing cell walls of Msasa tree (Brachystegia sp.) as the sole carbon source, and their cellulolytic activities were measured using carboxymethyl cellulose and alpha-cellulose as substrates. All isolates studied produced carboxymethyl cellulase (endoglucanase) and alpha-cellulase (exoglucanase) activity. Endoglucanase-specific activities of ten selected isolates ranged from 2.375 to 12.884 micromol glucose.(mg protein)-1.h-1, while activities on alpha-cellulose (exoglucanase activity) ranged from 0.293 to 22.442 micromol glucose.(mg protein)-1.day-1. Carboxymethyl cellulose induced the highest cellulase activity in the selected isolates, while the isolates showed variable responses to nitrogen sources. The current study indicates that some isolates of A. pullulans of tropical origin produce significant extracellular cellulolytic activity and that crude cell walls may be good inducers of cellulolytic activity in A. pullulans.

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COMPARATIVE ULTRASTRUCTURAL STUDY OF THE DEGRADATION IN SOIL OF ISOLATED CUTIN FROM ILEX LEAVES AND MALUS FRUIT

1983

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Cutin was dewaxed and removed from leaves of Ilex aquifolium L. (holly) and fruits of Malus pumila Mill, (apple) by a combination of chemical and enzymic techniques. Discs of cutin were then buried in soil under field conditions, retrieved at intervals and examined using electron microscopy. The ultrastructure of cutin before and after burial was compared with that of cuticle of intact holly leaves and apple fruits, Apple cutin was extensively eroded after being buried for 12 months, but neither apple nor holljf cutin was completely degraded even after 2 years in soil. The significance of polysaccharide fibrils embedded in the cutin is discussed in relation to the patterns of cutin degradation which were observed and to the distribution of microorganistns in the decaying cutin.

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In vitro degradation of Ilex aquifolium leaf cutin by phylloplane fungi

Cited by 4 publications

References 14 publications

Fungal associations on field-weathered plants and their role in residue decomposition

Fungal associations on field-weathered plants and their role in residue decomposition

Extracellular cellulase production by tropical isolates of Aureobasidium pullulans

COMPARATIVE ULTRASTRUCTURAL STUDY OF THE DEGRADATION IN SOIL OF ISOLATED CUTIN FROM ILEX LEAVES AND MALUS FRUIT

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