Results 31 to 40 of about 1,547 (176)

The phase change in ferns

open access: yesActa Societatis Botanicorum Poloniae, 2014
It is argued that the phasic alternation of sporophyte and gametophyte in ferns involves changing gene activation during oogenesis and sporogenesis respectively.
P. R. Bell
doaj   +1 more source

An updated view on the long‐term survival and significance of marine protist resting stages

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 4, July 2026.
Abstract Resting stages of protists act as biological time capsules when buried in marine sediments, preserving viable cells that enable the study of ecological and evolutionary processes across timescales. Recent studies have extended the known viability in diatoms to several millennia and in dinoflagellates to over a century, while also identifying ...
Sanne Mariël Moedt, Sofia Ribeiro
wiley   +1 more source

Flowcytometric and Allozymic Studies on the Korean Dandelion (Taraxacum, Asteraceae), With Special Reference to the Hybrid Origin of Taraxacum coreanum Nakai

open access: yesPlant Species Biology, Volume 41, Issue 4, July 2026.
We found that the Korean tetraploid Taraxacum coreanum (Co) shows fixed heterozygosity at two dimeric enzyme loci, sod‐1 (aaab) and mdh‐1 (bddd). Allele‐specific comparisons indicate that sod‐1 ‘a’ and mdh‐1 ‘d’ are characteristic of the triploid T. mongolicum (Mo) whereas the ‘b’ alleles at both loci match Korean diploids (e.g., T. hallaisanense, Ha).
Tatsuyoshi Morita   +6 more
wiley   +1 more source

METABOLIC ENGINEERING OF SOLVENTOGENIC Clostridia [PDF]

open access: yesBiotechnologia Acta, 2019
Literary data on the organization of the genome, the connection of genes with the production and regulation of solvents, and the metabolic engineering of solventogenic clostridia are presented.
O. Tigunova   +3 more
doaj   +1 more source

Sporogenesis in Pallavicinia

open access: yesBotanical Gazette, 1906
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

The effect of trait choice on hybrid species distribution model projections under climate change

open access: yesEcography, Volume 2026, Issue 6, June 2026.
Species distribution models (SDMs) have been increasingly combined with thermal performance data to enhance their transferability and to provide a physiological explanation for the predicted geographic patterns. Yet, while it is widely acknowledged that thermal sensitivities may vary among biological traits, it remains largely unexplored to what extent
Soria Delva   +7 more
wiley   +1 more source

Female sporogenesis in the native Antarctic grass Deschampsia antarctica Desv.

open access: yesPolish Polar Research, 2016
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]

open access: yesJournal of Bacteriology, 1965
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

Deciphering the soybean root rot pathogen Phytophthora sojae: Signaling pathways, transcriptional regulation, and effector biology

open access: yesNew Plant Protection, Volume 3, Issue 2, June 2026.
This review highlights how Phytophthora sojae utilizes unconventional lineage‐specific signaling networks, including unique G protein‐coupled receptor fusions, expanded kinases, and rapidly evolving effectors, to infect soybeans. Understanding these divergent molecular paradigms reveals critical vulnerabilities in this destructive pathogen, offering ...
Min Qiu   +4 more
wiley   +1 more source

Ultrastructure, Morphology, and Sporogenesis of Pasteuria penetrans [PDF]

open access: yesPhytopathology®, 1997
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
openaire   +2 more sources

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