Thalli

Yeast Fungus whose thallus consists of single cells that multiply by budding or fission. 

Fragments of C. foliacea thalli were stored dry. Before use, these were abundantly rinsed in tap water and rapidly surface sterilized (10 seconds) in 1% sodium hypochloride. They were then inoculated in the in ratio of 0.5 g Cladonia thallus to each Petri dish containing 20 ml medium (water or Mohr) with 200 pi spore suspension (see above) or 20 shoot fragments. 

Table 1 Experiment 2. Guided isolation and identification of potential allelochemicals from Cladonia foliacea. O, fraction O P, fraction P UA, usnic acid ca, caulonema ch, chloronema sb, side branches. Protonemal system from shoots after 21 days in culture tested against three fractions from C. foliacea thallus and in control Mohr medium. The observations represent means calculated from about 300 protonemata for each species. P. squarrosa is the species least affected, while 7. flavovirens is the most affected by lichen fractions. 

Giordano, S., Alfano, F., Basile, A. and Castaldo Cobianchi, R. (1999). Toxic effect of the thallus of the lichen Cladonia foliacea on the growth and morphogenesis of bryophytes. Cryptogamie Bryology 20(1) 35-41. 

The microspore was divided after 1-2 days moistening and one of two cells lost chloroplasts, forming rhizoid. Other cell formed multicellular protallium and then thallus in 4 -7 day. The images are well seen in LSCM. 

In a more focused examination of eight of the more common macroalgal species at Anvers Island, Huang et al. (2006) were able to show that fresh thallus of the red... 

Fairhead et al. (2005b) examined small-scale within-thallus variations in the phlorotannin contents of D. anceps and D. menziesii and also compared individuals collected from different sites at Anvers Island as well as from the upper and lower limits of their depth distributions at those sites. Thirteen defined thallus parts within each individual were sampled, and although there was considerable variation within individuals at that spatial scale, there were no consistent patterns. When fine scale parts within the individuals were grouped, the main axis of D. anceps had significantly lower phlorotannin levels than did lateral branches. In D. menziesii, the distal-most tips of the lateral branches had significantly higher phlorotannin levels... 

Collen J, Roeder V, Rousvoal S, Collin O, Kloareg B, Boyen C (2006a) An expressed sequence tag analysis of thallus and regenerating protoplasts of Chondrus crispus (Gigartinales, Rhodophyceae). J Phycol 42 104-112... 

Schoenwaelder MEA (2002) Physode distribution and the effect of thallus sunburn in Flormosira banksii (Fucales, Phaeophyceae). Bot Mar 45 262-266 Schoenwaelder MEA, Clayton MN (2000) Physode formation in embryos of Phyllospora comosa and Flormosira banksii (Phaeophyceae). Phycologia 39 1-9 Schwender J, Gemunden C, Lichtenthaler HK (2001) Chlorophyta exclusively use the 1-deoxyxylulose 5-phosphate/2-C-methylerythritol 4-phosphate pathway for the biosynthesis of isoprenoids. Planta 212 416 123... 

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