Some phonemes, such as *y, *w, *ʾ, and *H̥, appear to serve both as consonants (called "weak radicals" when they form part of a root) and as vowels (in which case they become *i, *u, and *a), depending on their distribution in the root or word.
Rhizobacteria can influence plants in various ways, depending on their ability to excrete metabolites, incorporate root exudates or compete with other soil microorganisms.
The success of beneficial microbes to colonize plant roots depends on their ability to manipulate immune responses of the host.
For example, it has been documented that a variety of zucchini plant (Cucurbita pepo L). accumulated various dioxin congeners and that their accumulation in roots depended on their hydrophobicity [ 15].
Other investigations suggested that the AM fungi, which depend on their host for carbon, increase root sink strength and enhance leaf photosynthetic activity to compensate for the 'cost' imposed upon the plant C economy by the fungus [ 97, 98].
The density of the WCS strains in the rhizosphere depends on their capacity to efficiently colonize the roots and effectively compete with other microbes in the rhizosphere for nutrients and space.
There are three different cases to be considered, depending on whether the roots of this quadratic equation (2.5) are distinct real roots, equal real roots (repeated real roots), or complex roots (roots appear as a conjugate pair).
where has the following possible forms, depending on the roots of the characteristic equation (1.6), that is, on the roots of (22).
Its value and range depend on root biomass, root texture and distribution of related species, plant growth, and environmental condition.
The effect varies with increasing depth and age of plant depending on the root length density.
