• Publications
  • Influence
DNA endoreduplication and polyteny understood as evolutionary strategies
  • W. Nagl
  • Biology, Medicine
  • Nature
  • 1 June 1976
DNA endoreduplication and related phenomena (such as endomitosis, polyteny, nuclear restitution and somatic polyploidy in general) are widespread over the animal and plant kingdoms, although theyExpand
  • 214
  • 10
The Phaseolus suspensor and its polytene chromosomes
Summary The first division of the zygote of Phaseolus is an asymmetric one, thus establishing two cells with different developmental capacities. Whereas the apical cell gives rise to the embryoExpand
  • 148
  • 6
Polytene Chromosomes of Plants
Publisher Summary This chapter describes polytene chromosomes of plants. Polytene chromosome structures occur in highly endopolyploid interphase nuclei. They are cable-like bundles of sisterExpand
  • 65
  • 5
Biophoton emission. New evidence for coherence and DNA as source.
The phenomenon of ultraweak photon emission from living systems was further investigated in order to elucidate the physical properties of this radiation and its possible source. We obtained evidenceExpand
  • 70
  • 4
  • PDF
«Plastolysomes» — Plastids Involved in the Autolysis of the Embryo-Suspensor in Phaseolus
Summary Programmed autolysis of the giant suspensor cells of the late heart-like embryo of Phaseolus coccineus is characterized by the transformation of the filiform leukoplasts into cytosome-likeExpand
  • 46
  • 4
DNA content, heterochromatin, mitotic index, and growth in perennial and annualAnthemidea (Asteraceae)
Within 18 perennial and annualAnthemideae species from 7 genera nuclear volume, DNA content and karyogram length are positively correlated. Annuals develop much more rapidly than related perennials.Expand
  • 60
  • 4
Acid phosphatase activity in plastids (plastolysomes) of senescing embryo-suspensor cells
Autolysis of the suspensor, an embryonal haustorium, starts in the basal cells and proceeds in the direction of the embryo. InPhaseolus vulgaris, acid phosphatase activity is first found inExpand
  • 23
  • 3
Cdc2-kinases, cyclins, and the switch from proliferation to polyploidization
  • W. Nagl
  • Biology
  • Protoplasma
  • 1 September 1995
SummaryAlmost all organisms, from protists to humans, and from algae to orchids, display somatic polyploidy, including polyteny. In insects and higher plants, nearly all normal, differentiated cellsExpand
  • 19
  • 3
Inhibition of Polytene Chromosome Formation in Phaseolus by Polyploid Mitoses
The course of the cell cycles during the early development of the suspensor in Phaseolus coccineus and Ph. vulgaris is a factor influencing the occurrence of polytene chromosomes within the mature,Expand
  • 34
  • 2