Protein-precipitating capacity of tannins inShorea (Dipterocarpaceae) seedling leaves

Becker, Peter; Martin, Joan Stadler

doi:10.1007/bf01403099

Cited by 21 publications

(10 citation statements)

References 28 publications

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“…However more recent work with maple and birch trees (Schultz et al 1982) and with oak trees (Faeth 1985) has shown more variable patterns of annual changes in tannins, and Coley (1983) (rainforest trees), Cork and Pahl (1984) (eucalypts), Prudhomme (1983) (subarctic shrubs), and Puttick (1986) (Californian oak trees) have also measured highest concentrations of tannins and phenolics in young leaves. Part of the reason for these differences may be the different assay methods used (Becker & Martin 1982), but the pattern apparent for E. blakelyi trees may also be more common than previously suspected.…”

Section: Discussionmentioning

confidence: 88%

Dieback of rural eucalypts: Does insect herbivory relate to dietary quality of tree foliage?

Landsberg

1990

Australian Journal of Ecology

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Foliar dietary quality, and the damage that insects caused to the foliage of dieback-affected and healthy Eucalyptus blakelyi trees, were monitored for 3 years, on pastoral properties in the Australian Capital Territory. Compared with healthy trees, the foliage of dieback trees was more heavily grazed by inseets. and its dietary quality was generally superior. Some oj the differences in dietary quality were related to the average age of the foliage of healthy and diebaek trees. But when statistical models were used to equalize the effects of differences in leaf ages, leaves on dieback trees nonetheless tended to have lower specific weights, and were sometimes rounder and contained more nitrogen. Regression analyses of herbivory against each of the dietary quality variables showed that the only significant relationship that was consistent for both of the years monitored was for foliar nitrogen and herbivory for both dieback and healthy trees. In the first year, regressions between herbivory and specific leaf weight, shape, or sugar content were also significant, but only amongst the dieback trees. This may indicate that these relationships were a response to. rather than a primary cause of the repeated high defoliation of the dieback trees. Multiple regression equations incorporating annual means of several quality variables explained a high proportion of the variance in annual herbivory. but were grossly different between years.

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Section: Discussionmentioning

confidence: 88%

Dieback of rural eucalypts: Does insect herbivory relate to dietary quality of tree foliage?

Landsberg

1990

Australian Journal of Ecology

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“…Other studies have also failed to obtain high correlations between protein precipitation and TP or CT content (Becker and Martin 1982). Extracts from C macrocarpum, C ternatea, E berteroana, E poepigiana, P montana and P phaseoloides species did not precipitate protein ; consequently, the TP in these samples are nontannin phenolics that do not precipitate protein (Hagerman 1987).…”

Section: Experiments 2 Precipitation Of Protein From Bsa and Aalp By mentioning

confidence: 95%

Comparison of the Precipitation of Alfalfa Leaf Protein and Bovine Serum Albumin by Tannins in the Radial Diffusion Method

Giner‐Chavez

Soest

Robertson

et al. 1997

J. Sci. Food Agric.

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“…Nitrogen and water content exhibit progressive seasonal decreases, while physical toughness increases (Rausher, 1981;Scriber & Slansky, 1981;Schultz et al, 1982). Tannins and other polyphenols, substances known to be toxic to some herbivores, are present in higher amounts in the mature foliage of some tree species (Feeny, 1970;Haukioja et al, 1978), and in the young foliage of others (Fox & Macauley, 1977;Gartlan et aL, 1980;Oates et al, 1980;Becker & Martin, 1982;Schultz et al, 1982). The higher nutritive quality of young Entomol.…”

Section: Introductionmentioning

confidence: 99%

The nutritional ecology of larvae of Alsophila pometaria and Anisota senatoria feeding on early‐ and late‐season oak foliage

Lawson

Merritt

Martin

et al. 1984

Entomologia Exp Applicata

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The larvae of Alsophila pometaria (Harr.), feeding on the young foliage of oak, has a higher relative growth rate (RGR) and relative nitrogen accumulation rate (RNAR) than the larvae of Anisota senatoria (J. E. Smith), feeding on the mature foliage of oak. Although the young oak foliage is more efficiently digested by A. pometaria (higher AD's), it is not more efficiently assimilated and used for growth (no difference in ECI's). Thus, the higher growth rate of A. pometaria is due entirely to a higher consumption rate (RCR and RNCR). Young foliage is significantly higher in nitrogen and water than mature foliage, but phenol and tannin levels are comparable in young and old foliage. A. pometaria consumes the foliage of different oak species at the same rate, independent of nitrogen content, while A. senatoria increases its consumption rate in response to decreased nitrogen levels. As a result, the growth rate of A. pometaria is directly related to leaf nitrogen content, while the growth rate of A. senatoria is independent of leaf nitrogen. The two species of insects have digestive systems that are very similar biochemically, and that are well‐designed for effective protein digestion. Tannins and phenols do not influence the nutritional indices of either species. We suggest that the major benefit of spring feeding is the availability of succulent, high‐nitrogen foliage, and not the avoidance of hightannin foliage. The spring feeder appears to have a feeding strategy that favors rapid growth at the expense of efficiency, while the late summer feeder has a strategy that favors efficiency over rate. RÉSUMÉ Ecologie alimentaire de chenilles d'Alsophila pometaria et d'Anosita senatoria consommant du feuillage précoce ou tardif de chěne Alimentées sur feuillage jeune de chěne, les chenilles d'Alsophila pometaria avaient un taux relatif de croissance (RGR) et un taux relatif d'accumulation d'azote (RNAR) plus élevés que les chenilles d'Anisota senatoria alimentées sur feuillage mǔr de chěne. Bien que le jeune feuillage soit plus efficacement digéré par A. pometaria (AD plus élevé), il n'est pas assimilé et utilisé pour la croissance avec de meilleurs rendements (les ECI ne sont pas différents). Ainsi le taux de croissance plus élevé d'A. pometaria est dǔ entièrement à un taux de consommation plus important (RCR et RNCR). Le feuillage jeune est significativement plus riche en azote et en eau que le feuillage mǔr, mais les niveaux de phénol et de tanins sont les měmes. A pometaria consomme les feuilles de différentes espèces de chěnes au měme taux, indépendamment de la teneur en azote, tandis que A. senatoria accroǐt sa consommation en réponse à une diminution de la teneur en azote. Il en résulte que le taux de croissance d'A. pometaria dépend directement de la teneur en azote des feuilles, tandis que celui d'A. senatoria en est indépendant. Les systèmes digestifs des deux insectes sont biochimiquement semblables et sont efficaces pour la digestion des protéines. Les tanins et les phé...

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Protein-precipitating capacity of tannins inShorea (Dipterocarpaceae) seedling leaves

Cited by 21 publications

References 28 publications

Dieback of rural eucalypts: Does insect herbivory relate to dietary quality of tree foliage?

Dieback of rural eucalypts: Does insect herbivory relate to dietary quality of tree foliage?

Comparison of the Precipitation of Alfalfa Leaf Protein and Bovine Serum Albumin by Tannins in the Radial Diffusion Method

The nutritional ecology of larvae of Alsophila pometaria and Anisota senatoria feeding on early‐ and late‐season oak foliage

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