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Otostegia persica (Burm.) Boiss. is the medicinal plant of Lamiaceae family that has long been used traditionally in treatment of severe diarrhea, common cold, flatulence, headache, sore, fever, skin allergies, and blood fat and sugar. This research was conducted in 2013 for one year to identify some ecological characteristics and potential allelopathicof O. persica in Hormozgan province. The c...

Mesophyll cells isolated mechanically from leaves of Zinnia elegans L. cv Canary bird differentiate into tracheary elements (TE) semisynchronously and at high frequency. Using this system, three cDNA clones, TED2 to TED4, whose corresponding mRNAs were expressed in a close association with tracheary element differentiation, were isolated by differential screening of a lambda gt11 cDNA library. ...

The effects of medium pH on cell expansion and tracheary element (TE) differentiation were investigated in differentiating mesophyll suspension cultures of Zinnia elegans L. In unbuffered cultures initially adjusted to pH 5.5, the medium pH fluctuated reproducibly, decreasing about 1 unit prior to the onset of TE differentiation and then increasing when the initiation of new Tes was complete. E...

Cell size and secondary cell wall patterning are crucial for the proper functioning of xylem vessel elements in the vascular tissues of plants. Through detailed anatomical characterization of Arabidopsis thaliana hypocotyls, we observed that mutations in the putative spermine biosynthetic gene ACL5 severely affected xylem specification: the xylem vessel elements of the acl5 mutant were small an...

A special form of a CuZn-superoxide dismutase with a high isoelectric point (hipI-SOD; EC 1.15.1.1) and hydrogen peroxide (H2O2) production were studied during the secondary cell wall formation of the inducible tracheary element cell-culture system of Zinnia elegans L. Confocal microscopy after labelling with 2',7'-dichlorofluorescin diacetate showed H2O2 to be located largely in the secondary ...