Functional analysis of a beta-1,3-glucanase gene (Tag1) with anther-specific RNA and protein accumulation using antisense RNA inhibition.

A critical stage in pollen development is the dissolution of tetrads into free microspores. Tetrads are surrounded by a wall composed primarily of beta-1,3-glucan. At the completion of meiosis, tetrads are released into the anther locule after hydrolysis of the callose by a beta-1,3-glucanase complex.

Evidence that the phytochrome gene family in black cottonwood has one PHYA locus and two PHYB loci but lacks members of the PHYC/F and PHYE subfamilies.

The phytochrome photoreceptors play important roles in the photoperiodic control of vegetative bud set, growth cessation, dormancy induction, and cold-hardiness in trees. Interestingly, ecotypic differences in photoperiodic responses are observed in many temperate-zone tree species. Northern and southern ecotypes of black cottonwood (Populus trichocarpa Torr.

Cloning and characterization of Tag 1, a tobacco anther beta-1,3-glucanase expressed during tetrad dissolution.

A critical stage in pollen development is the dissolution of the four products of meiosis, the tetrads, into free microspores. The tetrads are surrounded by a thick callose wall composed of beta-1,3-glucan. At the completion of meiosis, the tetrads are released into the anther locule after hydrolysis of the callose by a beta-1,3-glucanase.