The starch content in Fraxinus ornus L. during the yearly cycle. Histological observations

Boscagli, Aldemaro

doi:10.1080/11263508209428035

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…This explanation is largely based on species artificially selected for high fruit or wood yield, which is necessarily linked to important seasonal fluctuations in C‐ (e.g. Boscagli ; Mataa & Tominaga ; Mataa, Tominaga & Kozaki ; Miller et al . ) and N‐storage (Tromp ).…”

Section: Introductionmentioning

confidence: 99%

Foliar habit, tolerance to defoliation and their link to carbon and nitrogen storage

2014

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Summary1. An innovative hypothesis to explain the higher carbon (C) and nitrogen (N) storage in woody tissues of winter deciduous species as compared to evergreen species is that these storages reflect an adaptation to tolerate herbivory. Support for this hypothesis has been little when manipulative defoliations were partial and/or applied in a single season. Given that repeated defoliations throughout a single season are common in temperate forests and tend to be more severe in deciduous than in evergreen species, we tested this hypothesis considering complete and recurrent defoliation in two sympatric Nothofagus species with contrasting foliar habit. 2. In the field, we applied three defoliation intensities for 3 years in naturally coexisting juvenile trees of Nothofagus betuloides (evergreen) and Nothofagus pumilio (deciduous). Defoliation intensities included complete defoliation (100%) twice during the growing season, partial defoliation (50%) twice during the whole experiment and no defoliation. We evaluated survival, regrowth and C-and N-storage in the leaves, stems and roots of each tree. 3. Complete defoliation caused 100% mortality in N. betuloides after the first year and no mortality in N. pumilio after 3 years; it induced higher C reductions in N. pumilio roots, supported by greater C-storage. Partial defoliation caused no interspecific differences in survival, though it produced a stronger decrease in C-storage in N. betuloides than in N. pumilio. N concentrations in woody tissues were significantly higher in N. pumilio than in N. betuloides, and only in the former did they decrease with the defoliation intensity. 4. Synthesis. We found a potential functional link between leaf habit, defoliation tolerance and Cand N-storage. The deciduous species tolerated complete and recurrent defoliations better than the evergreen species, which was associated with higher C-and N-storage in stems and roots of the former. This link was not detected under partial defoliation. We suggest that the higher C-and N-storage in the woody tissues of deciduous species as compared to evergreen species is an adaptation to tolerate complete and recurrent defoliations under which temperate winter deciduous species may have evolved.

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Section: Introductionmentioning

confidence: 99%

Foliar habit, tolerance to defoliation and their link to carbon and nitrogen storage

2014

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“…A similar correlation, although less significant (P = 0.06) was found at North Platte between soil moisture and annual height growth ( Figure 3B). Ash completes a great majority of shoot growth by June, relying heavily on stored carbohydrates produced in the previous summer and fall (Boscagli, 1982). Low soil moisture in August, therefore, may limit shoot growth the following spring.…”

Section: Soil Moisture-augustmentioning

confidence: 99%

Assessment of Microenvironmental Conditions Related to the Use of Synthetic Sheet Mulches for Protecting Newly Planted Trees in Semi-Arid Environments

Stepanek¹,

Brandle²,

Harrell³

2002

Journal of Sustainable Agriculture

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Microenvironmental conditions created by six weed control methods and the resulting survival and height growth of two species of windbreak trees were measured in three separate plantings in Nebraska. The treatments included three synthetic sheet mulches commonly used in tree plantings. Climagro, a black polyethylene mulch, and Sunbelt, a black woven polypropylene mulch, improved the growth of green ash (Fraxinus pennsylvanica Marsh.) in two of the three plantings. Survival of green ash and survival and growth of Scotch pine (Pinus sylvestris L.) were not significantly different among the treatments. Positive correlations were found between August soil moisture and ash height growth. No relationship was found between soil temperature and ash growth, although significant differences in soil temperature among treatments were detected. Weed control treatment did not affect air tem-

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Carbohydrate sources and sinks in woody plants

1992

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The starch content in Fraxinus ornus L. during the yearly cycle. Histological observations

Cited by 5 publications

References 9 publications

Foliar habit, tolerance to defoliation and their link to carbon and nitrogen storage

Foliar habit, tolerance to defoliation and their link to carbon and nitrogen storage

Assessment of Microenvironmental Conditions Related to the Use of Synthetic Sheet Mulches for Protecting Newly Planted Trees in Semi-Arid Environments

Carbohydrate sources and sinks in woody plants

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