When pieces of the plant get broken off they develop into new plants. Extracts of C. racemosa are already tested to reduce different types of cancer [3] but also to fight against multi-drug resistant uropathogens (as K. Pneumoniae and P. aeruginosa). [2][1], A plant of C. racemosa consists of a number of branches linked to stolons which are anchored to the sandy substrate by rhizoids. They are rich in fiber, proteins, minerals (calcium and magnesium), folic acid, ascorbic acid, vitamin A, and vitamin B1 while also being low in fat. They are shiny green, grape like plants mainly used as vegetables. Nothing surprising, therefore, that this is considered as an invasive species. mucronata L.N.de Senerpont Domis, 2003; Caulerpa racemosa var. killer algae. Like the Caulerpa taxifolia that while breaking releases a venomous latex containing caleurpin, also the Caulerpa racemosa utilizes, though in minor extent, this venom that seems harmless for the man but is harmful for many marine herbivorous invertebrates such as the Motted Sea Hare (Aplysia fasciata). Many of them exhibit polymorphism, showing different growth forms in different habitats which makes them difficult to identify. The genus Caulerpa comes from the Greek (καυλόϛ) “caulós” = stalk, stem and from (ἕρπω) “herpo” = to creep, whilst the name of the species racemosa comes from the Latin “racemósus, a, um” = in clusters, due to the curious look of the laminae as is highlighted by the English name of “Sea Grapes” or the French one of “Caulerpe raisin”. [3] Like other members of the order Bryopsidales, each C. racemosa plant consists of a single enormous cell with a large number of nuclei. If in laboratory the alga is turned upside down, in short time gets out a stolon under and the growth resumes. They are the sister group to Microthmaniales. Morphological characters, such as distance between modules, number of modules, stolon branches and rhizoid clusters per centimeter of stolon, indicated a uniformity among species within a specific habitat. uvifera (C.Agardh) J.Agardh, 1873; Caulerpa uvifera C.Agardh, 1817; Chauvinia clavifera (Turner) Bory de Saint-Vincent, 1829; Chauvinia clavifera var. Physiological and Structural Characteristics of Three Varieties of Caulerpa racemosa (Försskal) J. Agardh. It is an edible species with known medicinal virtues, but carried by the keel of the ships, has invaded many temperate seas among which, from 1990, the Mediterranean where it reproduces also sexually unlike an earlier invader, the Caulerpia taxifolia, coming from the aquaria market and accidentally escaped from a pool © Giuseppe Mazza. This is the species we offer. It utilizes, emptying, all the cytoplasm to create male and female gametes that merge at sea creating swimming spherical zygotes, a “green cloud”, that reduces the visibility to less one metre when, as often occurs, the reproduction takes place in mass. Dark green to light green. Underwater visibility can be reduced to less than one metre by the green cloud produced in the process. cylindracea has a slender thallus, fixed to the substratum by means of thin rootlike rhizoids 1-10 (to 20) mm long and 0.3-0.8 (to 1.0) mm in diameter, that are closely arranged along the stolon. C. racemosa var. Caulerpa racemosa var. These deter animals from consuming the plants. There were 39 such mass spawnings during a period of 125 days and the days on which they took place showed no relation to the tidal or lunar cycles. Two sites of P. oceanica covered with the densest canopy of the C. racemosa were chosen: the dead mats of Moreover, this monoecious species, as well as vegetatively, can also reproduce sexually. The sea breams Boops boops and Sarpa salpa were found to feed on the algae, as did the sea urchins Paracentrotus lividus and Sphaerechinus granularis. tomentosoides, Caulerpa taxifolia, Undaria pinnatifida, Asparagopsis armata and Grateloupia doryphora, while Sargassum muticum ranked eight and Caulerpa racemosa ten. These protective characteristics of C. racemosa might be attributed to its remarkable antioxidant (total phenolics, total flavonoids, DPPH and ABTS radical scavenging, and reducing power) and Fe-chelation properties. Photosynthetic assimilators (branches) assume many different forms, often with rows or whorls of leaf-like pinnules. Caulerpa racemosa (Forsskal) J. 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