Chlorophyll Chlorosis can also be caused by pathogens including viruses, bacteria and fungal infections, or sap-sucking insects. Anthocyanins are other plant pigments. The absorbance pattern responsible for the red color of anthocyanins may be complementary to that of green chlorophyll in photosynthetically active tissues such as young "Quercus coccifera" leaves. It may protect the leaves from attacks by plant eaters that may be attracted by green color. The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll amounts were very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations were
Peronospora sparsa watermolds therefore cool, wet, humid conditions are what they prefer. "Peronospora sparsa is also an obligate biotroph. This means they require a living host to survive and reproduce. Obligate biotrophs are also commonly called obligate parasites because their existence is detrimental to the host." Downy mildew spread mostly by conidia, which are asexual spores. Conidia are often carried by wind or rain onto the leaves, stem, or berries. From there, they develop secondary infections which means this pathogen has a polycyclic life cycle. After the secondary infection the disease will continue to spread very fast if uninterrupted. The best control