Actinobacteria produce diverse and huge amounts of enzymes that are widely used in different industrial purposes. Specific properties of enzymes allow to run the re‐ actions under milder conditions with improved yield and reduced wastes. Further redesign for natural enzymes is very essential because they are often not suitable for biocatalytic processes. Recently, new microbial natural and crea...

In plants, growth in length by cell elongation is conditioned by certain substances elaborated in the plant and effective in minute amounts, thus having the nature of hormones. A number of simple tests have been worked out which allow of a qualitative and quantitative determination of the growth-promoting properties of various substances. With the aid of these biological tests the native growth...

Hormonal heterophylly, the response of tissues in one phylum to hormones that occur naturally in others, is of current general interest not only to the invertebrate endocrinologist but also to the oncologist. The fact that certain mammalian tissues respond metabolically to hormones elaborated in invertebrates and plants was substantiated during the course of a conference, entitled "Conference W...

3.1. Development, growth and differentiation 3.1.1. Development Development is an umbrella term, referring to the sum of all of the changes that an organism goes through in its life cycle – from germination of the seed through growth, maturation, flowering, and senescence. Development is most readily manifest in changes in from of the organism or organ, such as the transition from the vegetativ...