In its interaction with the environment, an organism is coordinated on the cytoplasmic, cellular, tissular, organic, and organismic levels so as to act as a unified system. The formation of a complete organism in phylogeny consists in the differentiation and integration of cells, tissues, organs,...
以这个管理例子和产生结果多数雇员在这些组织成为安全主张自己。 成功的组织产生使角色主要安全提倡者更加容易责任和介入的文化。 [translate] aNitrogen in the form of soil compounds enters plants, which then are consumed by other organisms 氮气以土壤化合物的形式进入植物,由其他有机体然后消耗 [translate] ...
N2-fixation was detectable throughout the upper 200 m at most stations, with rates ranging from 0.001 to 0.19 nM N hÀ1. N2-fixation in the SPG may account for the production of 8–20% of global oceanic new nitrogen. Interestingly, comparable 15N2-fixation rates were measured under light...
- The growth of non-leguminous plants is increased by means of a mixed culture containing organisms obtained from the root tubercles of leguminous plants and aerobic organisms, present in soil, capable of fixing atmospheric nitrogen. A drop from cultures of each of the organisms is mixed with...
Modern biology textbooks assert that only bacteria can take nitrogen from the atmosphere and convert it into a form that is usable for life. Plants that fix nitrogen, such as legumes, do so by harboring symbiotic bacteria ... Cell & Microbiology ...
But these legumes also enriched the soil--by converting nitrogen in the atmosphere into nitrates--a form of nitrogen the crops like wheat or corn could use as a nutrient. And, these and other "cover crops," planted to hold the soil after the wheat or corn was harvested--they stored much...
Although nitrogen gas is abundant in the air, plants are unable to use nitrogen in this form, but they can readily use the ammonia formed by these bacteria and thus benefit from this symbiosis. As with mycorrhizal associations, the host plant benefits its symbiont by providing a carbohydrate ...
But these legumes also enriched the soil—by converting nitrogen in the atmosphere into nitrates—a form of nitrogen the crops like wheat or corn could use as a nutrient.And, these and other “cover crops,” planted to hold the soil after the wheat or corn was harvested—they stored much ...
Gryndler M, Vosatka M (1996) The response of Glomus fistulosum-maize mycorrhiza to treat-ments with culture fractions from Pseudomonas putida. Mycorrhiza 6:207-211 Google Scholar Haahtela K, Laakso T, Korhonen TK (1986) Associative nitrogen fixation by Klebsiella spp.: adhesion sites and inocu...
Environmental Science Could you dig a hole all the way to the Earth's mantle? Life Science What Are the Nitrogen Cycle Steps? Environmental Science Why is water vital to life? Life Science Intricate Ice Caves in Antarctica May Harbor Unique Life Space Exploring Mars: Insights Into the Red ...