In vitro organogenesis, one of the most common pathways leading to in vitro plant regeneration, is widely used in biotechnology and the fundamental study of plant biology. Although previous studies have constructed a complex regulatory network model for Arabidopsis in vitro organogenesis, no related study has been reported in ramie. To generate more complete observations of transcriptome conten...

1 Department of Molecular Plant Genetics, Centro Nacional de Biotecnologı́a CSIC, Madrid, Spain and 2 Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Genetics, Ghent University, Gent, Belgium * Corresponding author. Department of Plant Systems Biology, VIB, Technologiepark 927, Gent 9052, Belgium. Tel.: þ 32 9331 3914; Fax: þ 32 9331 3809 E-mail: [email protected]...

Montreal Protocol set world-wide goals in January 1996 to reduce the use of chlorofluorocarbons (CFCs) and ultimately eliminate all CFC use. This restriction has advanced the urgent development of alternative chemicals. Recently, in a Korean electronic factory, male and female workers exposed to 2-bromopropane (2-BP), which does not seem to affect the stratospheric ozone and is therefore used a...

* In this study, we tested whether the organogenesis of symbiotic root nodules, lateral roots and root galls induced by parasitic root knot nematodes (Meloidogyne javanica) was regulated by the presence of flavonoids in the roots of Medicago truncatula. Flavonoids accumulate in all three types of root organ, and have been hypothesized previously to be required for secondary root organogenesis b...

The molecular basis of lymphoid organogenesis has recently been elucidated using gene-targeted mice. Mice deficient in lymphotoxin-alpha (LT alpha) lack lymph nodes and Peyer's patches. The action of LT alpha in lymphoid organogenesis is mediated mostly by the membrane form of LT by a mechanism independent of TNF receptor I (TNFR-I) or II (TNFR-II). Additionally, follicular dendritic cell (FDC)...

Growth of the aerial part of the plant is dependent upon the maintenance of the shoot apical meristem (SAM). A balance between the self-renewing stem cells in the central zone (CZ) and organogenesis in the peripheral zone (PZ) is essential for the integrity, function, and maintenance of the SAM. Understanding how the SAM maintains a balance between stem cell perpetuation and organogenesis is a ...

Unavailability of performant planting material pineapple constitutes a major problem its cultivation in Africa. For this purpose, indirect organogenesis technique is used to evaluate the vitro responses two cultivars during explant’s regeneration. Calli were induced from crown leaf and plantlets “Smooth Cayenne” “Sugarloaf cultivars”. Murashige Skoog medium with vitamins B5 supplemented differe...

Pax6 is a highly conserved gene that controls eye development in all species where it has been tested. In spite of this common 'master control regulator', the eyes of different animals are morphologically very different and it is believed that they have evolved independently multiple times through evolution. Recent works looking at eye development in 'primitive' species offer some explanation a...

Gonad morphogenesis in Caenorhabditis elegans requires two secreted proteases. Recent studies show that alterations of the extracellular matrix component fibulin-1 rescue gonadogenesis in the absence of these proteases. This finding is a critical step toward understanding the role of extracellular matrix in organogenesis.

Plant lateral roots have a defined developmental pattern and shape, but a key question is whether strict regulation underlies observed regularity. A new study uses long-term in toto live imaging and simulations to show that organogenesis rather follows self-organizing principles.