Mitrastemon | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Ericales |
Family: | Mitrastemonaceae Makino [1] |
Genus: | Mitrastemon Makino |
Species | |
M. matudae |
Mitrastemon is a genus of two widely disjunct species of parasitic plants. [2] It is the only genus within the family Mitrastemonaceae. Mitrastemon species are root endoparasites, which grow on Fagaceae. It is also a non-photosynthetic plant that parasitizes other plants such as Castanopsis sieboldii .
The parasitic species, Mitrastemon yamamotoi(Makino) Makino was found in Japan in 1909. It was originally named Mitrastemma yamamotoiMakino by botanist Tomitaro Makino (1862 – 1957), [3] but was later renamed as Mitrastemon yamamotoi in 1911. [4]
Then species Mitrastemon matudae was discovered by botanist Eizi Matuda during an expedition to Mt. Ovando (near the town of Escuintla, Chiapas) in the state of Chiapas, Mexico (Matuda, 1947). [5] [6] The species was originally named by a botanist friend of Matuda, Yoshimatsu Yamamoto (1893-1947), [7] in 1925–1926, but then published in 1936. [8] Mitrastemon yamamotoi is a protandrous plant. Its flowers go through a male phase before transforming into their final female form. The flowers of M. yamamotoi attract a variety of insects ranging from wasps to flies and beetles. Among these, beetles are the best pollinators for this plant since their visit to the flower would pick up a large amount of pollen and they would pollinate from each of the flowers that they had already visited. [5] The plant is endemic to tropical and subtropical forest regions such as southeast Asia and Japan.
Originally Mitrastemon was placed within the order Rafflesiales, together with other parasitic plants, but this order was long suspected to be actually polyphyletic. In 2004, the genus was found to be related to Ericales by comparing their mitochondrial DNA. [9]
Several orthographic variants of the name Mitrastemon exist, including Mitrastema and Mitrastemma. The correct taxonomic name is Mitrastemon, the use of which was proposed and justified in an article by Reveal [10] and approved by the Nomenclature Committee for Vascular Plants of the International Association for Plant Taxonomy in a subsequent article. [11]
The species has a cylindrical body ranging from 3 cm to 7 cm in height with a tuberous base. During an early developmental stage it appears an off-white color; however, once it is dried it becomes a dark brown color (Mir et al., 2016).
The plant is observed only during the winter season and it completes its visible life cycle from November to April (Mir et al., 2016). Mitrastemon is completely embedded within the tissues of its host, except during the reproduction stage when above-ground parts emerge from host tissues.
Unlike other plants, the flowers of this organism change sex from male to female. Various insects are involved in pollination. Mitrastemon yamamotol is mainly pollinated by social wasps, but previously unnoticed pollination are also important, based on visitation frequency and pollen loads. There have been studies of the pollination that suggest that nocturnal visitors, such as crickets and cockroaches, contribute to geitonogamous pollination. Diurnal visitors like social wasps facilitate outcrossing. [12]
There are two known species; [12] [13]
Mitrastemon yamamotoi is distributed in tropical and subtropical forests of Southeast Asia and Japan. Mitrastemon matudae is distributed from southern Mexico to Colombia. [13]
Cuscuta, commonly known as dodder or amarbel, is a genus of over 201 species of yellow, orange, or red parasitic plants. Formerly treated as the only genus in the family Cuscutaceae, it now is accepted as belonging in the morning glory family, Convolvulaceae, on the basis of the work of the Angiosperm Phylogeny Group. The genus is found throughout the temperate and tropical regions of the world, with the greatest species diversity in subtropical and tropical regions; the genus becomes rare in cool temperate climates, with only four species native to northern Europe.
Megachilidae is a cosmopolitan family of mostly solitary bees. Characteristic traits of this family are the restriction of their pollen-carrying structure to the ventral surface of the abdomen, and their typically elongated labrum. Megachilid genera are most commonly known as mason bees and leafcutter bees, reflecting the materials from which they build their nest cells ; a few collect plant or animal hairs and fibers, and are called carder bees, while others use plant resins in nest construction and are correspondingly called resin bees. All species feed on nectar and pollen, but a few are kleptoparasites, feeding on pollen collected by other megachilid bees. Parasitic species do not possess scopae. The motion of Megachilidae in the reproductive structures of flowers is energetic and swimming-like; this agitation releases large amounts of pollen.
Dactylanthus taylorii, commonly known in English as wood rose and in Māori as te pua o te rēinga, is a fully parasitic flowering plant, the only one endemic to New Zealand. The host tree responds to the presence of Dactylanthus by forming a burl-like structure that resembles a fluted wooden rose. When the flowers emerge on the forest floor, they are pollinated by a ground-foraging species of native bat.
The Asian giant hornet or northern giant hornet, including the color form referred to as the Japanese giant hornet, is the world's largest hornet. It is native to temperate and tropical East Asia, South Asia, Mainland Southeast Asia, and parts of the Russian Far East. It was also found in the Pacific Northwest of North America in late 2019 with a few more additional sightings in 2020, and nests found in 2021, prompting concern that it could become an invasive species. However, by the end of the season in November 2022, there were no confirmed sightings in North America at all, suggesting they may have been eradicated in that region.
Ficus citrifolia, also known as the shortleaf fig, giant bearded fig, Jagüey, wild banyantree and Wimba tree, is a species of banyan native to southern Florida, the Caribbean, Mexico, Central America, and northern South America south to Paraguay. It is distinguished from the closely related Florida strangler fig mainly by the finer veining in the leaves.
Orobanchaceae, the broomrapes, is a family of mostly parasitic plants of the order Lamiales, with about 90 genera and more than 2000 species. Many of these genera were formerly included in the family Scrophulariaceae sensu lato. With its new circumscription, Orobanchaceae forms a distinct, monophyletic family. From a phylogenetic perspective, it is defined as the largest crown clade containing Orobanche major and relatives, but neither Paulownia tomentosa nor Phryma leptostachya nor Mazus japonicus.
The Rafflesiaceae are a family of rare parasitic plants comprising 36 species in 3 genera found in the tropical forests of east and southeast Asia, including Rafflesia arnoldii, which has the largest flowers of all plants. The plants are endoparasites of vines in the genus Tetrastigma (Vitaceae) and lack stems, leaves, roots, and any photosynthetic tissue. They rely entirely on their host plants for both water and nutrients, and only then emerge as flowers from the roots or lower stems of the host plants.
A parasitic plant is a plant that derives some or all of its nutritional requirements from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All parasitic plants develop a specialized organ called the haustorium, which penetrates the host plant, connecting them to the host vasculature – either the xylem, phloem, or both. For example, plants like Striga or Rhinanthus connect only to the xylem, via xylem bridges (xylem-feeding). Alternately, plants like Cuscuta and some members of Orobanche connect to both the xylem and phloem of the host. This provides them with the ability to extract resources from the host. These resources can include water, nitrogen, carbon and/or sugars. Parasitic plants are classified depending on the location where the parasitic plant latches onto the host, the amount of nutrients it requires, and their photosynthetic capability. Some parasitic plants can locate their host plants by detecting volatile chemicals in the air or soil given off by host shoots or roots, respectively. About 4,500 species of parasitic plants in approximately 20 families of flowering plants are known.
Bdallophytum is a genus of parasitic flowering plants with five described species. It parasitizes on the roots of plants of the genus Bursera, such as Bursera simaruba. The genus is endemic to the Neotropics.
Hydnora africana is an achlorophyllous plant in the subfamily Hydnoroideae, native to southern Africa that is parasitic on the roots of members of the family Euphorbiaceae. It is also called jakkalskos or jackal food. The specific epithet africana means to be from Africa. Molecular data has suggested that Hydnoroideae is a "basal angiosperm" solidifying its place among the more primitive flowering plants. Hydnoraceae are the only angiosperms known to have no leaves or scales and are considered obligate parasites, completely dependent on their hosts to survive. The plant grows underground, except for a fleshy flower that emerges above ground and emits an odour of faeces to attract its natural pollinators, dung beetles and carrion beetles. The vegetative body of the plants has been reduced to consisting only of roots and flowers. The flowers act as temporary traps, retaining the beetles that enter long enough for them to pick up pollen.
The family Apodanthaceae comprises about 10 species of endoparasitic herbs. They live in the branches or stems of their hosts, emerging only to flower and fruit. The plants produce no green parts and do not carry out any photosynthesis. There are two genera: Pilostyles and Apodanthes. A third genus, Berlinianche, was never validly published. Mitochondrial and nuclear DNA sequences confidently place the Apodanthaceae in the Cucurbitales, where they also fit well in terms of their flower morphology. The native range of Apodanthes is restricted to Central and tropical South America, while Pilostyles has a much wider though disjointed native range, encompassing many countries in tropical and subtropical America, a section of Africa from Gabon to Tanzania and down to Zimbabwe, as well as Turkey, Iran, Iraq, and Western Australia.
Vespula austriaca is an obligate parasitic wasp, parasitizing the nests of other species in the genus Vespula in the Old World. Its common host species include V. rufa in Europe, Japan, and East Siberia.V. austriaca wasps pollinate orchids.
Eiji Matsuda (1894–1978) was a Mexican botanist of Japanese origin. In scholarly works, his name is generally romanised as "Eizi Matuda" following the "Kunrei" system.
Balanophora is a genus of parasitic flowering plants in the family Balanophoraceae found in parts of tropical and temperate Asia, including the Eastern Himalayas, Malesia region, Pacific Islands, Madagascar, and tropical Africa. There are about 20 accepted species, including the newly discovered B. coralliformis. Many species emit an odour which possibly attracts pollinators in the same way that pollinators are attracted to Rafflesia.
Cytinus visseri, commonly known as the Northern vampire cup, is a holoparasitic flowering plant in the family Cytinaceae. This flower favorably interacts with another plant, Helichrysum reflexum, that is a woody shrub in South Africa.
Balanophora fungosa, sometimes known as fungus root is a flowering plant in the family Balanophoraceae and occurs in South Asia, Southeast Asia, Australia and some Pacific Islands. It is an obligate parasite growing on the roots of rainforest trees. The flowering structure is shaped like a puffball but in fact consists of a globe covered with thousands of tiny female flowers. The globe is surrounded at its base by a much smaller number of male flowers. In flower, the plant emits an odour resembling that of mice.
Thismia kobensis is a species of flowering plant from the Thismia genus in the myco-heterotrophic family Burmanniaceae.
Thereuopoda clunifera is a species of centipede in the genus Thereuopoda and the family Scutigeridae. It was described by Charles Thorold Wood in 1862. It has been seen visiting Mitrastemon yamamotoi flowers.
Relictithismia kimotsukiensis is a species of fairy lanterns, in the family Thismiaceae. It is the only species in the genus Relictithismia. This mycoheterotrophic plant is known only from the Kimotsuki Mountains, in the Ōsumi Peninsula, Kagoshima Prefecture, Kyushu Island, in the southern Japan. The species is assessed as Critically Endangered based on IUCN Guidelines. The genus is characterized from the closely related Haplothismia by its solitary flowers, having an annulus, and anther thecae largely separated, whereas in Haplothismia the 2-6 flowers are borne on pseudoracemes, without annulus, and the anther thecae are connate.
Scybalium fungiforme is a species of parasitic plant in the family Balanophoraceae. It is commonly known as Cogumelo-de-caboclo in Brazil, where it is found. It was first described in 1832 by Heinrich Wilhelm Schott and Stephan Endlicher.