Suaeda


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Suaeda

 

(seablite), a genus of halophilic plants of the family Chenopodiaceae. The plants are annual or perennial herbs, subshrubs, or shrubs. The leaves are usually alternate, narrow, and fleshy; the small, most often bisexual flowers are borne singly or in groups in the axils of the bracts. The perianth consists of five fleshy segments, which often have outgrowths when fruits are present. The fruit has a membranous carpel and contains vertical or horizontal seeds. Some species form two types of seeds: glossy black-brown seeds in the summer and early autumn and dull light-colored seeds in late autumn. The latter type of seed is the larger of the two.

There are approximately 100 species of seablite, distributed throughout the world except in the arctic zone. The plants grow along seacoasts and the shores of salt lakes and in various other salt-bearing places. The USSR has about 25 species, which grow mainly in southern regions. Most common are 5. pro-strata, an annual whose stems turn red, and S. microphylla, a strongly branched shrublet. Both species are usually found in clusters in wet solonchaks and solonchak lowlands. In late autumn and winter these and other species of seablite are eaten by camels and, to a lesser extent, sheep and goats. S. altissima is a weed and a ruderal plant. The ashes of seablite contain potash and sodium carbonate.

T. V. EGOROVA

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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A number of species have been found to be valuable feed for livestock in arid area like Suaeda pruinosa Lange, S.
Effects of nitric oxide and nitrogen on seedling emergence, ion accumulation, and seedling growth under salinity in the euhalophyte Suaeda salsa.
Suaeda fruticosa and Ziziphus nummularia also belonged to the same group I but were classified as outliers since they didn't form community with other species of the group.
On the other hand, infrequent tide flushing and hypersalinity formed mangrovesalt marsh ecotones where salt-tolerant species like Halocnemum strobilaceum, Suaeda aegyptiaca, Suaeda maritima, Halopeplis perfoliata, Arthrocnemum macrostachyum, and Salicornia herbacea (Table 4) were zoned beyond the dense mangrove areas.
It was predicted that Suaeda australis and Atriplex semibaccata would have the highest germination success under saline conditions due to their tendency to persist in the most saline soils (in close proximity to the shoreline as well as further away in areas where mineral deposits have accumulated), whilst Rhagodia candolleana is generally less abundant in these areas.
Based on palatability Prosopis cineraria and Acacia nilotica were highly palatable, Calligonum polygonoides, Suaeda fruticosa, Salsola baryosma, Haloxylon recurvum, Capparis decidua, Calotropis procera and Tamarix aphylla were moderately palatable whereas Haloxylon salicornicum was less palatable.
The species of Amaranthaceae (conserved name according to Stevens, 2001 onwards) are very frequent in the supra-littoral vegetation of the European coasts and in saltpans (Anabasis, Arthrocnemum, Halocnemum, Salicornia, Salsola, Sarcocornia, Suaeda, etc.), together with other halophytes able to tolerate high saline concentration and with frequent adaptations to physiological dryness.
As a physical factor, light is especially important for betalain production, as seen in studies carried out on beetroot (Shin, Park, & Paek, 2013) and Suaeda salsa (Wang & Liu, 2006), as it acts in reprogramming plant metabolism.
cDNA Best homology Organism Identity of fragment to database aminoacid (%) Musa 07 putative Na+/H+ Arabidopsis thaliana 85 antiporter SOS1 Musa 10 cytosolic ascorbate Vigna unguiculata 81 peroxidase Musa 23 serine/threonine Arabidopsis thaliana 73 protein kinase SOS2 Musa 26 betaine aldehyde Suaeda liaotungensis 72 dehydrogenase (BADH) * Of the sequences obtained, four exhibited a high degree of similarity to amino acids sequence of genes whose functions are already known, nine displayed low similarity, and ten sequences were not similar
Effect of salinity on germination, seedling emergence, seedling growth and ion accumulation of a euhalophyte Suaeda salsa in an intertidal zone and on saline inland.