People are being de-rooted.
Indeed, intact seedlings, de-rooted older plants and cuttings show significant differences, not only in root founding tissues, but also in auxin requirements, sensitivity, and rooting mutant phenotypes [ 25].
The efficacy of different auxins (indoleacetic acid (IAA), indolebutyric acid and naphthaleneacetic acid) for induction of de novo root organogenesis from root explant and the biomass accumulation were evaluated.
Upon an intricate chemical dialog and cross-recognition between bacterium and roots, S. meliloti colonizes the interior of de novo root organs, the nodules, in which it differentiates into bacteroids committed to biological fixation of atmospheric nitrogen [ 18].
Chen et al. [ 11] provided a method suitable to study de novo root organogenesis.
Expression of GA2OX1 increased about 1.5 times in pat81 roots after the M. cannonballus attack, whereas it decreased in "Piel de sapo" roots after fungal infection (compare Figs. 4B and 4C).
Based on the published data and authors' ongoing studies, current knowledge of rice phytochrome functions in regulating seedling de-etiolation, root gravitropic response and elongation, plant architecture, flowering time and fertility is summarized.
Transfer of intact plant from soil to hydroponics and subsequent estimation of nitrogenase activity in de-topped roots with attached nodules did not result in appreciable change in all the legumes studied except cluster bean (Table 1).
However, the GS polypeptide abundance does not always correlate with GS activity levels, for example in de-nodulated roots, GS activity was comparable to that observed in cotyledons but the GS polypeptide content is greatly reduced.
Zwang Y, Jonas O, Chen C, Rinne ML, Doench JG, Piccioni F, Tan L, Huang HT, Wang J, Ham YJ, O'Connell J, Bhola P, Doshi M, Whitman M, Cima M, Letai A, Root DE, Langer RS, Gray N, Hahn WC.
