Results 51 to 60 of about 1,993 (204)
Female sporogenesis in the native Antarctic grass Deschampsia antarctica Desv.
The development of megasporocytes and the functional megaspore formation in Deschampsia antarctica were analyzed with the use of microscopic methods. A single archesporial cell was formed directly under the epidermis in the micropylar region of the ovule
Domaciuk Marcin +5 more
doaj +1 more source
Transduction of Sporogenesis in Bacillus subtilis [PDF]
Takahashi , I. (McMaster University, Hamilton, Ontario, Canada). Transduction of sporogenesis in Bacillus subtilis . J. Bacteriol. 89: 294–298. 1965.—A number of asporogenous mutants of Bacillus subtilis were isolated and genetic analyses with these mutants
openaire +2 more sources
Ultrastructure, Morphology, and Sporogenesis of Pasteuria penetrans [PDF]
Pasteuria penetrans is a bacterial parasite of root-knot nematodes that shows great potential as a biocontrol agent. Scanning and transmission electron microscopy were used to study the ultrastructure, morphology, and sporogenesis of four isolates of P. penetrans. The effects of different Meloidogyne spp.
Z X, Chen +3 more
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Induction of sporogenesis in Gracilaria Spp (Gigartinales, Rhodophyta) by environmental manipulation. [PDF]
Gracilaria spp have been regarded as the most important agarophytes for cultivation due to their high regenerative capacity. Seaweed farming from spores of Gracilaria is considered as an alternative tool to protect the natural stock and to meet the ...
Saravanane, P
core
Abstract Climate change is restructuring ecological communities globally, yet the impacts are often underestimated or poorly resolved due to the lack of historical baselines. In temperate oceans, biologically diverse and socioeconomically important kelp forests are the marine ecosystem most threatened by climate change.
Brian Timmer +3 more
wiley +1 more source
Abstract Despite the importance of the seasonal timing of events in the life cycle for understanding population dynamics, we lack information on the phenology of most macroalgal species. The red macroalga Gracilaria vermiculophylla has become common in both hard‐ and soft‐bottom habitats following its invasion throughout the Northern Hemisphere.
Stacy A. Krueger‐Hadfield +3 more
wiley +1 more source
Antibiotics of the β-lactam class inhibit bacterial cell wall synthesis by targeting penicillin-binding proteins (PBPs). Here, Sacco et al. study the four PBPs present in the pathogen C.
Michael D. Sacco +18 more
doaj +1 more source
Transfer cells in Horneophyton lignieri illuminate the origin of vascular tissues in land plants
Summary Recent fossil discoveries and advances in plant phylogeny have renewed debate about the most recent common ancestor (MRCA) of land plants and the evolution of its fundamental organs and tissues. We re‐investigate the vascular system of Horneophyton lignieri, an exceptionally preserved Rhynie Chert fossil central to understanding early plant ...
Paul Kenrick, Emma J. Long
wiley +1 more source
Reprogramming of Histone H3 Lysine Methylation During Plant Sexual Reproduction
Plants undergo extensive reprogramming of chromatin status during sexual reproduction, a process vital to cell specification and pluri- or totipotency establishment.
Huihui Fang, Yuke Shao, Gang Wu
doaj +1 more source
Embryogeny and Sporogenesis in Reboulia Hemisphaerica [PDF]
1. The embryo of Reboulia develops without the formation of an octant stage characteristic of certain other Marchantiaceae. 2. The first transverse wall in the fertilized egg separates the cell which is to form the foot from that which is to form the seta and capsule.
openaire +1 more source

