Parkia pendula

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Parkia pendula
Visgueiro (Parkia pendula).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Parkia
Species:
P. pendula
Binomial name
Parkia pendula
(Willd.) Benth. ex Walp.

Parkia pendula is a species of neotropical evergreen tree found throughout Central and South America. [2] It is part of the Parkia genus, a group of flowering plants that are part of the legume family, Fabaceae. [3]

Contents

Habitat

Parkia pendula can be found in primary and secondary forests, from altitudes of 20 to 500 meters above sea level. It prefers well-drained, subtropical environments, ideally thriving on hills or slopes with a 30% incline that experience more than 4000 mm of precipitation annually. [4] They commonly grow alongside Peltogyne purpurea , Caryocar costaricense , and Qualea paraensis .

An adult tree is very flood tolerant, capable of withstanding long-term submersion. Despite this, early seedlings can only survive a few weeks in flooded conditions, limiting the range of environments Parkia pendula can thrive in. [5] [6]

Range & distribution

Parkia pendula can be found in a variety of countries, mainly Bolivia, Brazil, Colombia, Costa Rica, French Guiana, Guyana, Honduras, Nicaragua, Peru, Suriname, and Venezuela. [3] It grows in many lowland forests, with a large reserve found in a national park in Espirito Santo, Brazil [7]

Threats

Insects, specifically certain species of beetles, deposit eggs inside the bud of Parkia pendula, acting as a parasite on the seeds [7] . Despite this, there is no considerable impact on the persistence of the species and the IUCN lists it as a species of Least Concern. [3]

Description

Parkia pendula trees range from 15 to 50 meters in height and can be up to 1.2 meters in diameter. [4] The bark is either whitish-grey or reddish-brown and plated, with many lenticels. [4] The strong, fruity aroma of a blooming Parkia pendula can be attributed to monoterpenes in the flower, specifically the stereoisomers (Z) 𝛽-ocimene and (E) 𝛽-ocimene. [8]

Unlike other Parkia species, Parkia pendula has a flattened and layered crown of leaves. [2] The horizontal branches support alternating bipinnate leaves that come in about 15 to 27 pairs, [4] narrowing to a maximum of 3 leaves whorled about a node. [2] The leaves themselves are dark green and oblong, with curved distal ends. [2]

Parkia platycephala flower.jpg

Flowers

The flowers produced by Parkia pendula grow as inflorescences, particularly pseudanthiums. [9] They have yellowish-pink petals arranged radially. [4] The heads are about to 3.4 cm in length and have a diameter of 4.5 to 4.9 cm. [9] Each pseudanthium contains ~1300 small flowers densely packed around a spherical receptacle. [8] The flowers themselves hang off of thin, woody stems known as peduncles approximately one meter below the crown of the tree. [7] [8] Flowers typically bloom from December to January in Costa Rica, and from January to August in Venezuela. [4]

Fertile flowers have a gamosepalous calyx beneath their corolla [4] and display five distinctive lobes. [9] Each fertile flower has ten androgynous stamen evenly joined at their base, with a single style and several minuscule stigma. [4] [9] Though typically hermaphroditic and containing a single ovary, some flowers are functionally male and lack both ovaries and styles. [8] [9]

Some flowers can produce nectar in large quantities that adheres to the styles. Nectariferous flowers open less fully, despite having a larger diameter than fertile flowers. [9] Nectar is typically produced at dusk after blooming and contains sugar (mainly fructose) concentrations of 20%. [8] The nectar produced contains 14 amino acids, though by quantity proline constitutes 85%,. [8]

Fruit

The fruit/seed pods of Parkia pendula are considered legumes. They are 8 to 30 cm long and 1.9 to 3.2 cm wide. [4] Only a few flowers ever fertilize and develop into seed pods. [10]

Seed pods have a variety of exteriors, whether they are shiny, smooth, dull, hairy, sticky, or some combination of those. [2] The fruit pods are also colorful, ranging from olive or deep greens to reddish brown hues. [10]

Parkia pendula typically fruits in February and July in Costa Rica, from January to November in Venezuela, and in May in Bolivia. Locals are known to harvest the fruits, typically picking them from trees throughout March and April. The collected fruit pods are left outside until they burst and the seeds can be scooped out. [4]

The seeds of Parkia pendula. Parkia pendula, visgueiro - Flickr - Tarciso Leao.jpg
The seeds of Parkia pendula.

Seeds

The pods of Parkia pendula contain anywhere from 15 to 34 seeds. [2] They have an elliptical shape and are 0.9 to 1 cm in length and 0.4 to 0.5 cm in width. [4] Seeds weigh between 0.06 and 0.11 grams and there are said to be 9848 to 10100 seeds per kilogram of fruit pods. [2] [4]

The seed pod gum of Parkia pendula is extremely sticky due to a high concentration of sugars such as galactose and arabinose. [11] In fact, there are recorded instances of small vertebrates getting caught in the gum and being fatally trapped due to their exposure to the elements and potential predators. [11]

Seeds typically germinate 6 to 19 days after sowing, and anywhere from 36% to 58.5% of seeds actually germinate. Experiments conducted in Brazil showed that by cutting opposite the radicle emergence, scarring the seeds with an abrasive stone, or immersing in sulfuric acid for less than 30 minutes, germination rates would increase. [4]

Reproduction

The Parkia pendula tree exhibits mass flowering, typically with 150 to 200 capitula blooming in one night. [9] The flowers open sequentially from the base to the tip. The capitula appear bright red due to the color of the anthers and filaments, then become yellow-red at dusk when nectar and pollen are produced. When the styles elongate, the plant takes on a purple-red hue, finishing the dramatic color shift all within one night. Flowers are usually shed afterwards within a span of 3 to 4 days. [10]

Pollination

Like other members of the Mimosoideae subfamily, Parkia pendula exhibits pollen aggregation, specifically polyads. It further differentiates itself from other members of Mimosoideae by having globose polyads rather than flattened polyads from pollen grain layering. Parkia pendula polyads are about 100 mm in diameter and composed of 32 pollen grains, with an outer exine that is grooved. The stigma for each fertile flower only contains a cavity for one polyad, but since the number of pollen grains matches the number of ovules, one polyad can fertilize all the ovules of a flower. [12]

Phyllostomus discolor, a common pollinator of Parkia pendula. Phyllostomus discolor b.jpg
Phyllostomus discolor, a common pollinator of Parkia pendula.

Parkia pendula is chiropterophilous, meaning it is largely pollinated by bats. [9] While a dozen different species have been observed pollinating Parkia pendula, the most common is Phyllastomus discolor . [7] [8] [10] Bats are attracted to the large quantity of nectar produced by nectariferous flowers. When bats land upside-down on the flowers, large quantities of pollen accumulate on the underside of their feet and spread to other flowers. [9] However, some species, like Glossophaga soricina , do not land on the flower and do not facilitate pollination. [8]

The corolla is a key part of pollination, as its round shape and exposed arrangement allows it to be found by bats via echolocation. [13] Typically bat-pollinated plants emit a sulfur scent, but Parkia pendula has no sulfur compounds in its flowers, further substantiating that bats find it by echolocation [7]

Other pollinators include opossums, kinkajous, porcupines, ring-tailed coati, certain primates, and occasionally bees. [7] [9]

Seed dispersal

Parkia pendula has a unique seed dispersal mechanism. The seed pods secrete an amber-colored gum, and after bursting, the seeds within get stuck on the gum. It then dries and washes away during precipitation. [10]

Besides dehiscence, Parkia pendula also disperses seeds utilizing animals. Many primates and parrots feed on the gum due to the high concentration of proteins, carbohydrates, and magnesium. These animals will consume and defecate the seeds later on. [11] [14] Additionally, members of the ant species Pachycondyla crassinoda have also participated in seed dispersal. [7]

Taxonomy

The genus Parkia was established by Robert Brown in 1826, notably different from other members of their subfamily Mimosideae due to their fertile flowers having a calyx with five lobes and ten stamen. [2] The genus contains three subsections: Parkia , Platyparkia, and Sphaeroparkia; Parkia pendula is a part of Platyparkia, along with Parkia paraenesis and Parkia platycephala. [2] [9]

Uses

The wood from Parkia pendula is moderately heavy, with a density of 0.57 g/cm3. [4] Processed wood typically has a white or yellow color, with a thick textured grain. It is resistant to fungal infections, but porous enough for preservatives, so it is commonly used in furniture and carpentry. [4]

Due to its high growth rate and capability to attract wild animals while fixing copious amounts of nitrogen, Parkia pendula is perfectly suited to afforestation. It can be planted in degraded, barren environments and serve as a dependable foundation for establishing a forest. [15]

The seed pod gum is also notably used to catch birds. [11]

Medicinal use

Parkia pendula has been known to treat dysentery, headaches, inflammation, itching, and fevers. The bark has commonly been used by locals to treat stomach aches. [4] Research has been conducted examining the use of lectin as a histochemistry marker to distinguish meningothelial tumors and as treatment for cutaneous wounds in normal and immunocompromised mice. [16] [17] PPeL, the lectin produced when Parkia pendula seeds are purified, binds to cell surface carbohydrates in oligosaccharides and glycoconjugates, expressing cytoplasmic staining which can be used to characterize tumor cell types. [16]

Related Research Articles

<span class="mw-page-title-main">Fabaceae</span> Family of legume flowering plants

The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, are a large and agriculturally important family of flowering plants. It includes trees, shrubs, and perennial or annual herbaceous plants, which are easily recognized by their fruit (legume) and their compound, stipulate leaves. The family is widely distributed, and is the third-largest land plant family in number of species, behind only the Orchidaceae and Asteraceae, with about 765 genera and nearly 20,000 known species.

<span class="mw-page-title-main">Pollinator</span> Animal that moves pollen from the male anther of a flower to the female stigma

A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.

<span class="mw-page-title-main">Pollination</span> Biological process occurring in plants

Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, for example beetles; birds, butterflies, and bats; water; wind; and even plants themselves. Pollinating animals travel from plant to plant carrying pollen on their bodies in a vital interaction that allows the transfer of genetic material critical to the reproductive system of most flowering plants. When self-pollination occurs within a closed flower. Pollination often occurs within a species. When pollination occurs between species, it can produce hybrid offspring in nature and in plant breeding work.

<i>Philodendron</i> Genus of flowering plants

Philodendron is a large genus of flowering plants in the family Araceae. As of September 2015, the World Checklist of Selected Plant Families accepted 489 species; other sources accept different numbers. Regardless of number of species, the genus is the second-largest member of the family Araceae, after genus Anthurium. Taxonomically, the genus Philodendron is still poorly known, with many undescribed species. Many are grown as ornamental and indoor plants. The name derives from the Greek words philo- 'love, affection' and dendron 'tree'. The generic name, Philodendron, is often used as the English name.

<i>Couroupita guianensis</i> Species of flowering plant

Couroupita guianensis, known by a variety of common names including cannonball tree, is a deciduous tree in the flowering plant family Lecythidaceae. It is native to the tropical forests of Central and South America, and it is cultivated in many other tropical areas throughout the world because of its beautiful, fragrant flowers and large, interesting fruits. Fruits are brownish grey. There are potential medicinal uses for many parts of Couroupita guianensis, and the tree has cultural and religious significance in India. In Sri Lanka, the cannonball tree has been widely misidentified as Sal, after its introduction to the island by the British in 1881, and has been included as a common item in Buddhist temples as a result.

<span class="mw-page-title-main">Entomophily</span> Form of pollination by insects

Entomophily or insect pollination is a form of pollination whereby pollen of plants, especially but not only of flowering plants, is distributed by insects. Flowers pollinated by insects typically advertise themselves with bright colours, sometimes with conspicuous patterns leading to rewards of pollen and nectar; they may also have an attractive scent which in some cases mimics insect pheromones. Insect pollinators such as bees have adaptations for their role, such as lapping or sucking mouthparts to take in nectar, and in some species also pollen baskets on their hind legs. This required the coevolution of insects and flowering plants in the development of pollination behaviour by the insects and pollination mechanisms by the flowers, benefiting both groups. Both the size and the density of a population are known to affect pollination and subsequent reproductive performance.

<span class="mw-page-title-main">Zoophily</span> Pollination by animals

Zoophily, or zoogamy, is a form of pollination whereby pollen is transferred by animals, usually by invertebrates but in some cases vertebrates, particularly birds and bats, but also by other animals. Zoophilous species frequently have evolved mechanisms to make themselves more appealing to the particular type of pollinator, e.g. brightly colored or scented flowers, nectar, and appealing shapes and patterns. These plant-animal relationships are often mutually beneficial because of the food source provided in exchange for pollination.

<i>Paeonia brownii</i> Species of flowering plant

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<span class="mw-page-title-main">Flower</span> Reproductive structure in flowering plants

A flower, also known as a bloom or blossom, is the reproductive structure found in flowering plants. Flowers consist of a combination of vegetative organs – sepals that enclose and protect the developing flower, petals that attract pollinators, and reproductive organs that produce gametophytes, which in flowering plants produce gametes. The male gametophytes, which produce sperm, are enclosed within pollen grains produced in the anthers. The female gametophytes are contained within the ovules produced in the carpels.

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<span class="mw-page-title-main">Pollination syndrome</span> Flower traits that attract pollinators

Pollination syndromes are suites of flower traits that have evolved in response to natural selection imposed by different pollen vectors, which can be abiotic or biotic, such as birds, bees, flies, and so forth through a process called pollinator-mediated selection. These traits include flower shape, size, colour, odour, reward type and amount, nectar composition, timing of flowering, etc. For example, tubular red flowers with copious nectar often attract birds; foul smelling flowers attract carrion flies or beetles, etc.

<i>Plathymenia</i> Genus of legumes

Plathymenia reticulata is a species of legume native to much of eastern South America. It is placed in its own genus, Platyhymenia, although other species have previously been recognised in that genus. It grows up to 30 m (98 ft) tall, and has distinctive flattened seed pods. Its wood is rot-resistant, and is widely used as a structural timber.

<i>Chamaecrista fasciculata</i> Species of plant

Chamaecrista fasciculata, the partridge pea, is a species of legume native to most of the eastern United States. It is an annual which grows to approximately 0.5 meters tall. It has bright yellow flowers from early summer until first frost, with flowers through the entire flowering season if rainfall is sufficient.

<i>Parkia biglobosa</i> Species of legume

Parkia biglobosa, known in English as the African locust bean, is a perennial deciduous tree in the family Fabaceae. It is found in a wide range of environments in Africa and is primarily grown for its pods that contain both a sweet pulp and valuable seeds. Where the tree is grown, the crushing and fermenting of these seeds constitutes an important economic activity. Various parts of the locust bean tree are used for medicinal and food purposes. As a standing tree, locust bean may have a positive effect on the yield of other nearby crops.

<span class="mw-page-title-main">Papilionaceous flower</span>

Papilionaceous flowers are flowers with the characteristic irregular and butterfly-like corolla found in many, though not all, plants of the species-rich Faboideae subfamily of legumes. Tournefort suggested that the term Flores papilionacei originated with Valerius Cordus, who applied it to the flowers of the bean.

<i>Parkia timoriana</i> Species of flowering plant

Parkia timoriana is a species of flowering plant in the legume family. English common names include tree bean. It is native to Thailand, Malaysia, Myanmar, Indonesia, and Assam and Manipur in India. It is widely cultivated for food and wood, and as an ornamental.

<i>Parkia filicoidea</i> Species of legume

Parkia filicoidea, or African locust bean, is a large, spreading flat-crowned tree to 30 metres tall, the bole of which may be narrowly buttressed to a height of about 3 metres, and up to 120 cm DBH. It occurs in wet evergreen or semi-deciduous forest, sometimes on forest fringes, riverbanks and lakes, termite mounds, at elevations up to 1000 metres from Côte d’Ivoire, east to Sudan and Somalia, Uganda, Kenya, Malawi and south to Angola, Zambia, Zimbabwe and Mozambique. Bark on trunk scaly or smooth, grey to yellow-brown, branchlets glabrous to puberulous.

<i>Acacia cana</i> Species of legume

Acacia cana, or commonly named as boree or the cabbage-tree wattle or broad-leaved nealie, is part of the family Fabaceae and sub-family Mimosoideae. It is a dense shrub- tree that can grow to 6 metres (20 ft) high and is a perennial plant meaning it has long life span and doesn’t necessary produce a high amount of seed. The cabbage-tree wattle heavily flowers from August till October and relies on animals and insects for pollination and dispersal of seeds. This least concern acacia species is found in the western plains of New South Wales and Central Queensland the habitats of these areas are found to be sandy soils and gibber plains.

Parkia bicolor, the African locust-bean, is a species of flowering plant, a tree in the family Fabaceae. It is native to tropical West and Central Africa. Its natural habitats are tropical moist lowland forests, swampland, woodland and savannah.

<span class="mw-page-title-main">Pollen theft</span> Net removal of pollen by an animal

Pollen theft, also known as pollen robbery or floral larceny, occurs when an animal actively eats or collects pollen from a plant species but provides little or no pollination in return. Pollen theft was named as a concept at least as early as the 1980, and examples have been documented well before that. For example, native honey bees were documented 'stealing' large amounts of pollen from the large, bat-pollinated flowers of Parkia clappertoniana in Ghana in the 1950s. Nevertheless, pollen theft has typically received far less research attention than nectar robbing, despite the more direct consequences on plant reproduction.

References

  1. Botanic Gardens Conservation International (BGCI); IUCN SSC Global Tree Specialist Group (2019). "Parkia pendula". IUCN Red List of Threatened Species . 2019: e.T62027047A149017891. doi: 10.2305/IUCN.UK.2019-2.RLTS.T62027047A149017891.en . Retrieved 14 December 2022.
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  3. 1 2 3 Group, B.G.C.I.B.I.S.G.T.S. Parkia Pendula. The IUCN Red List of Threatened Species 2019 2019.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Salazar, R. and C. Soihet, Manejo de semillas de 75 especies forestales de América Latina. 2001: CATIE.
  5. Scarano, F.R. and R.M. Crawford, Ontogeny and the concept of anoxia-tolerance: the case of the Amazonian leguminous tree Parkia pendula. Journal of Tropical Ecology, 1992. 8(3): p. 349-352.
  6. Oliveira, T.B., et al., Biometry and metabolism of carbon in young plants of Parkia pendula (Willd.) Benth. ex Walp. submitted to drought.
  7. 1 2 3 4 5 6 7 Piechowski, D., Reproductive ecology, seedling performance, and population structure of Parkia pendula in an Atlantic forest fragment in Northeastern Brazil. 2007, Universität Ulm.
  8. 1 2 3 4 5 6 7 8 Piechowski, D., S. Dötterl, and G. Gottsberger, Pollination biology and floral scent chemistry of the Neotropical chiropterophilous Parkia pendula. Plant Biology, 2010. 12(1): p. 172-182.
  9. 1 2 3 4 5 6 7 8 9 10 11 Hopkins, H., Floral biology and pollination ecology of the neotropical species of Parkia. The Journal of Ecology, 1984: p. 1-23.
  10. 1 2 3 4 5 Piechowski, D. and G. Gottsberger, Flower and fruit development of Parkia pendula (Fabaceae, Mimosoideae). Acta Botanica Brasilica, 2009. 23(4): p. 1162-1166.
  11. 1 2 3 4 Piechowski, D. and G. Gottsberger, The seedpod gum of Parkia pendula (Fabaceae) as a deadly trap for vertebrates. 2009.
  12. Capucho, L.C. and S.P. Teixeira, Morphology of the unusual polyad in Amazonian Parkia legume trees. Trees, 2014. 28(5): p. 1507-1514.
  13. Marinho, C., et al., Scent glands in legume flowers. Plant Biology, 2014. 16(1): p. 215-226.
  14. Peres, C.A., Identifying keystone plant resources in tropical forests: the case of gums from Parkia pods. Journal of Tropical Ecology, 2000. 16(2): p. 287-317.
  15. de Queiroz, A., et al. Trilha lúdico-pedagógica Iratama: um doce caminho para a divulgação das abelhas nativas. in Embrapa Amazônia Oriental-Artigo em anais de congresso (ALICE). 2016. In: SIMPÓSIO DE ESTUDOS E PESQUISAS EM CIÊNCIAS AMBIENTAIS NA AMAZÔNIA, 5 ….
  16. 1 2 Beltrão, E., et al., Parkia pendula lectin as histochemistry marker for meningothelial tumour. European journal of histochemistry, 2003: p. 139-142.
  17. Coriolano, M.C., et al., Parkia pendula seed lectin: potential use to treat cutaneous wounds in healthy and immunocompromised mice. Applied biochemistry and biotechnology, 2014. 172(5): p. 2682-2693.