Fungus commonly known as sac fungi or ascomycetes, constitute the largest taxonomic group within the Eumycota. These fungi form meiotic spores called ascospores, which are enclosed in a special sac-like structure called an ascus. This phylum includes morels, a few mushrooms and truffles, unicellular yeasts (e.g., of the genera "Saccharomyces", "Kluyveromyces", "Pichia", and "Candida"), and many filamentous fungi living as saprotrophs, parasites, and mutualistic symbionts (e.g. lichens). Prominent and important genera of filamentous ascomycetes include "Aspergillus", "Penicillium", "Fusarium", and "Claviceps". Many ascomycete species have only been observed undergoing asexual reproduction (called anamorphic species), but analysis of molecular data has often been
Chlorophyll linear relationship of chlorophyll content when compared to chemical testing. The ratio "F"/"F" provided a correlation value of "r" 0.96 compared to chemical testing in the range from 41 mg m up to 675 mg m. Gitelson also developed a formula for direct readout of chlorophyll content in mg m. The formula provided a reliable method of measuring chlorophyll content from 41 mg m up to 675 mg m with a correlation "r" value of 0.95. In plants, chlorophyll may be synthesized from succinyl-CoA and glycine, although the immediate precursor to chlorophyll "a" and "b" is protochlorophyllide. In Angiosperm plants,