Relationship of light intensity to leaf resin composition and yield in the tropical leguminous genera Hymenaea and Copaifera

Langenheim, Jean H.; Arrhenius, Susanne P.; Nascimento, José Carlos do

doi:10.1016/0305-1978(81)90056-9

Cited by 42 publications

(10 citation statements)

References 34 publications

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“…These data should be confirmed by further examination, during different seasons of the year, as this contrasts Langenhein's experiments that suggested circadian variations of the sesquiterpene composition (4). Leaf alcohols, such as (Z)-3-hexenol, were found in our analysis, showing that micro-hydro-distillation, for only 10 min of distillation time is a good method for obtaining essential oils since as more volatile molecules are readily trapped and analyzed before degradation.…”

Section: Resultscontrasting

confidence: 75%

The Essential Oil Composition ofCopaifera trapezifoliaHayne Leaves

Veiga

Pinto

Lima

2006

Journal of Essential Oil Research

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Section: Resultscontrasting

confidence: 75%

The Essential Oil Composition ofCopaifera trapezifoliaHayne Leaves

Veiga

Pinto

Lima

2006

Journal of Essential Oil Research

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“…Thus, high light should lead to elevated photosynthesis and carbohydrate accumulation, which would cause an increase in carbon-based defenses such as tannins and terpenes. Much evidence from the tropics supports this (41,65,76,126,154,162,179,180). Because the carbon/nitrogen ratio of tissue is high in the light, nitrogen-based defenses should decrease (33), though adequate tests of this prediction are lacking.…”

Section: Intraspecific Phenotypic Variation In Defensementioning

confidence: 58%

Herbivory and Plant Defenses in Tropical Forests

and

Barone

1996

Annu. Rev. Ecol. Syst.

1,730

1,811

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In this review, we discuss the ecological and evolutionary consequences of plantherbivore interactions in tropical forests. We note first that herbivory rates are higher in tropical forests than in temperate ones and that, in contrast to leaves in temperate forests, most of the damage to tropical leaves occurs when they are young and expanding. Leaves in dry tropical forests also suffer higher rates of damage than in wet forests, and damage is greater in the understory than in the canopy. Insect herbivores, which typically have a narrow host range in the tropics, cause most of the damage to leaves and have selected for a wide variety of chemical, developmental, and phenological defenses in plants. Pathogens are less studied but cause considerable damage and, along with insect herbivores, may contribute to the maintenance of tree diversity. Folivorous mammals do less damage than insects or pathogens but have evolved to cope with the high levels of plant defenses. Leaves in tropical forests are defended by having low nutritional quality, greater toughness, and a wide variety of secondary metabolites, many of which are more common in tropical than temperate forests. Tannins, toughness, and low nutritional quality lengthen insect developmental times, making them more vulnerable to predators and parasitoids. The widespread occurrence of these defenses suggests that natural enemies are key participants in plant defenses and may have influenced the evolution of these traits. To escape damage, leaves may expand rapidly, be flushed synchronously, or be produced during the dry season when herbivores are rare. One strategy virtually limited to tropical forests is for plants to flush leaves but delay "greening" them until the leaves are mature. Many of these defensive traits are correlated within species, due to physiological constraints and tradeoffs. In general, shade-tolerant species invest more in defenses than do gap-requiring ones, and species with long-lived leaves are better defended than those with short-lived leaves. 305

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“…(common name: Jatoba; family Caesalpinaceae) belongs to one of the major tropical resin-producing taxa and is found in dry-to-wet tropical to subtropical forest life zones (Langenheim, Arrhenius & Nascimento 1981). Hymenaea has amphi-Atlantic distribution with members which have radiated from equatorial rain forest into all major tropical lowland ecosystem types (Langenheim & Lee 1974).…”

Section: Sampling Sites and Periodsmentioning

confidence: 99%

Strong correlation between isoprene emission and gross photosynthetic capacity during leaf phenology of the tropical tree species Hymenaea courbaril with fundamental changes in volatile organic compounds emission composition during early leaf development

Kühn

Rottenberger

Biesenthal

et al. 2004

Plant Cell & Environment

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Changes of the volatile organic compounds (VOC) emission capacity and composition of different developmental stages of the tropical tree species Hymenaea courbaril were investigated under field conditions at a remote Amazonian rainforest site. The basal emission capacity of isoprene changed considerably over the course of leaf development, from young to mature and to senescent leaves, ultimately spanning a wide range of observed isoprene basal emission capacities from 0.7 to 111.5 m m m m g C g ---during the course of the year. By adjusting the standard emission factors for individual days, the diel courses of instantaneous isoprene emission rates could nevertheless adequately be modelled by a current isoprene algorithm. The results demonstrate the inadequacy of using one single standard emission factor to represent the VOC emission capacity of tropical vegetation for an entire seasonal cycle. A strong linear correlation between the isoprene emission capacity and the gross photosynthetic capacity (GP max ) covering all developmental stages and seasons was observed. The present results provide evidence that leaf photosynthetic properties may confer a valuable basis to model the seasonal variation of isoprenoid emission capacity; especially in tropical regions where the environmental conditions vary less than in temperate regions. In addition to induction and variability of isoprene emission during early leaf development, considerable amounts of monoterpenes were emitted in a light-dependent manner exclusively in the period between bud break and leaf maturity. The fundamental change in emission composition during this stage as a consequence of resource availability ( supply side control ) or as a plant's response to the higher defence demand of young emerging leaves ( demand-side control ) is discussed. The finding of a temporary emergence of monoterpene emission may be of general interest in understanding both the ecological functions of isoprenoid production and the regulatory processes involved.

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Relationship of light intensity to leaf resin composition and yield in the tropical leguminous genera Hymenaea and Copaifera

Cited by 42 publications

References 34 publications

The Essential Oil Composition ofCopaifera trapezifoliaHayne Leaves

The Essential Oil Composition ofCopaifera trapezifoliaHayne Leaves

Herbivory and Plant Defenses in Tropical Forests

Strong correlation between isoprene emission and gross photosynthetic capacity during leaf phenology of the tropical tree species Hymenaea courbaril with fundamental changes in volatile organic compounds emission composition during early leaf development

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