Halymeniales | |
---|---|
Halymenia fijiensis | |
Scientific classification | |
(unranked): | Archaeplastida |
Division: | Rhodophyta |
Class: | Florideophyceae |
Subclass: | Rhodymeniophycidae |
Order: | Halymeniales G.W. Saunders & Kraft, 1996 [1] |
Synonyms | |
CryptonemialesG.Murray, Introd. Stud. Seaweeds: 206, 238. 1895 (“Cryptonemiaceae”) Contents |
Halymeniales is an order of red algae belonging to the class Florideophyceae and the subclass Rhodymeniophycidae. [2]
The type species is Halymenia C.Agardh. [3]
The red algae colour comes from photosynthetic pigments (phycoerythrin, phycocyanin, allophycocyanin). Then the various blends of relative amounts of these 3 and chlorophyll, influences the plant colour, which can vary from dark red to blue, brown, or greenish. [4]
In 1996, Saunders and Kraft recognized a new name, the Halymeniales, for the red algal order that was previously known as the CryptonemialesKylin, [5] based on small-subunit rRNA phylogenetic analyses. The adapted order of Halymeniales originally held the families of HalymeniaceaeBory and SebdeniaceaeKylin, and it was characterized by taxa with a multi-axial thallus, non-procarpic female reproductive development, outwardly directed carpogonial branches and intercalary auxiliary cells (Saunders and Kraft, 1996). Later Saunders and Kraft in 2002, transferred the genus TsengiaK. C. Fan and Y. C. Fan from the Nemastomatales order into the Halymeniales with the establishment of the new mono-generic family Tsengiaceae. The Sebdeniaceae family was later removed from the Halymeniales and elevated to a new order, Sebdeniales Withall and Saunders (by Withall and Saunders, 2006) as suggested by Gavio et al. (2005). [6] Later, Papenfuss (1955) synonymized the Grateloupiaceae with the Cryptonemiaceae; however, Guiry (1978) reinstated the HalymeniaceaeBory based on nomenclatural priority. As a consequence, the Grateloupiaceae and Cryptonemiaceae are now considered synonyms of the Halymeniaceae. After using a taxon-rich rbcL data set, the family Grateloupiaceae was reinstated into the Halymeniales order in 2021. [7] The ArchaeolithophyllaceaeChuvashov family was created in 1987, and placed within the Corallinales (Order), [8] before being placed within the Halymeniales.
As accepted by AlgaeBase (with number of species per family); [9]
WoRMS only accepts Halymeniaceae and Tsengiaceae and not the other 2 families [10]
The order has cosmopolitan distribution. [11] They are found in places such as Tasmania (Australia), [12] Brazil, [13] within the Mediterranean, [14] near the island of Madagascar (within the Indian Ocean), [15] the Philippines, [16] Vietnam, [17] the South Korean coast (East and South) and near Japan. [18]
Polyopes affinis is a red alga from the order Halymeniales. The species is abundantly found along the South Korean coast (East and South) and also in Japan, and it is widely used as a food in South Korea, Japan, and China because of its nutritional properties and health benefits (Ha et al. 2022). [18]
Also, Halymenia durvillei is a red seaweed with a great potential as sulphated galactan producer. [15]
Galactan (galactosan) is a polysaccharide consisting of polymerized galactose. In general, galactans in natural sources contain a core of galactose units connected by α(1→3) or α(1→6), with structures containing other monosaccharides as side-chains.
Codium is a genus of edible green macroalgae under the order Bryopsidales. The genus name is derived from a Greek word that pertains to the soft texture of its thallus. One of the foremost experts on Codium taxonomy was Paul Claude Silva at the University of California, Berkeley. P.C. Silva was able to describe 36 species for the genus and in honor of his work on Codium, the species C. silvae was named after the late professor.
The Delesseriaceae is a family of about 100 genera of marine red alga.
Halymenia a genus of a macroscopic red algae that grows in oceans worldwide.
Isabella Aiona Abbott was an educator, phycologist, and ethnobotanist from Hawaii. The first native Hawaiian woman to receive a PhD in science, she became a leading expert on Pacific marine algae.
Rhodomelaceae is estimated to be the largest red algae family, with about 125 genera and over 700 species.
Hildenbrandia is a genus of thalloid red alga comprising about 26 species. The slow-growing, non-mineralized thalli take a crustose form. Hildenbrandia reproduces by means of conceptacles and produces tetraspores.
Laurencia is a genus of red algae that grow in temperate and tropical shore areas, in littoral to sublittoral habitats, at depths up to 65 m (213 ft).
Solieriaceae is a family of red algae in the order Gigartinales.
Gavino Trono Jr. is a Filipino marine biologist dubbed as the "Father of Kappaphycus farming". He was conferred the rank of National Scientist of the Philippines for contributions to the study of tropical marine phycology, focusing on seaweed biodiversity. He is currently a professor emeritus of the University of the Philippines Marine Science Institute.
Hypnea is a genus of red algae, and a well known carrageenophyte.
Sirodotia Kylin (1912) is a genus of freshwater red alga which was described by Kylin in 1912, and placed in the Batrachospermaceae family.
Wendy Alison Nelson is a New Zealand marine scientist and world expert in phycology. She is New Zealand's leading authority on seaweeds. Nelson is particularly interested in the biosystematics of seaweeds/macroalgae of New Zealand, with research on floristics, evolution and phylogeny, as well as ecology, and life history studies of marine algae. Recently she has worked on the systematics and biology of red algae including coralline algae, distribution and diversity of seaweeds in harbours and soft sediment habitats, and seaweeds of the Ross Sea and Balleny Islands.
Callithamniaceae is a family of red algae (Rhodophyta) in the order Ceramiales. The family was first described by Friedrich Traugott Kützing in 1843.
Balliales is an order of red algae belonging to the class Florideophyceae. The order consists only one family, Balliaceae. with only one genus - BalliaHarvey.
Titanophora is a genus of seaweeds belonging to family Schizymeniaceae of the order Nemastomatales.
Scinaiaceae is a family of red algae (Rhodophyta) in the order Nemaliales.
Liagoraceae is a family of red algae (Rhodophyta) in the order Nemaliales. The type genus is LiagoraJ.V.Lamouroux.
Peyssonneliales is a monotypic order of red algae belonging to the class Florideophyceae and the subclass Rhodymeniophycidae. It contains only 1 known family, PeyssonneliaceaeDenizot, M., 1968.