image: on the left is ros distribution in spruce pollen tubes (confocal fluorescence microscopy). on the right are spruce male cones and the process of pollen collection in the lab (photos... view more credit: maria breyginaplant physiologists from msu proved for the first time that dangerous reactive oxygen species that are often considered as by-products of energy generation in cells, are required by the conifers to fertilize the egg cell. experiments with pollen of blue spruce (picea pungens) helped to find a protein that makes the whole system work. the scientists believe that the obtained data will lead to the optimization of conifer forests restoration. the results of the study were published in the plant reproduction journal.`the study of sexual reproduction in conifers is on its early stage, and many of it`s aspects are practically unknown,` - says the co-author of the article maria breygina, a senior scientific researcher at the department of plant physiology, faculty of biology, msu, and a scientific fellow of the electrophysiology lab at pirogov russian national research medical university. - `these studies are of high fundamental importance, as the pollen of conifers is a more ancient object with directional growth compared to that of flowering plants.`flowering plants have flowers with stamens distributing the pollen and pistils where it has to get for fertilizing. cross pollination is usually more advantageous for a plant, as it helps to increase genet...