Results 61 to 70 of about 6,538,014 (290)

Phospho-Regulation of Meiotic Prophase

open access: yesFrontiers in Cell and Developmental Biology, 2021
Germ cells undergoing meiosis rely on an intricate network of surveillance mechanisms that govern the production of euploid gametes for successful sexual reproduction.
Funda M. Kar, Andreas Hochwagen
doaj   +1 more source

Karyotype of Zea luxurians and Z. mays subsp. mays using FISH/DAPI, and analysis of meiotic behavior of hybrids.

open access: yesGenome, 2011
The karyotypes of Zea luxurians and a race of maize from northwestern Argentina are described and compared using 4′,6-diamidino-2-phenylindole (DAPI) banding and fluorescent in situ hybridization (FISH) to localize the 180 bp knobs.
G. González, L. Poggio
semanticscholar   +1 more source

Meiotic chromosome behavior of Haworthia limifolia

open access: yesInternational Journal of Bioassays, 2016
Haworthia limifolia is a xerophytic plant belonging to the family Liliaceae and is indigenous to Africa. It is use extensively for its medicinal properties like antibacterial, antifungal properties and used for the treatment of sores, superficial burns, as a blood purifier and to promote pregnancy in women and cattles.
Afrin Nazli, Kamini Kumar*
openaire   +1 more source

SDF‐1 Attenuates Oocyte Quality Decline During Reproductive Aging Through Autophagy‐Enhanced Stress Granule Scavenging

open access: yesAdvanced Science, EarlyView.
SDF‐1 levels decline significantly with maternal aging. Exogenous supplementation restores meiotic spindle morphology, chromosomal alignment, and mitochondrial function while reducing oxidative stress in aged oocytes. Mechanistically, SDF‐1 enhances autophagic activity to clear accumulated stress granules, thereby rescuing fertilization competence and ...
Rui Long   +12 more
wiley   +1 more source

Cytogenetic characterization of Tropaeolum pentaphyllum Lam

open access: yesCrop Breeding and Applied Biotechnology, 2018
The species Tropaeolum pentaphyllum Lam. (batata-crem or crem) is of great economic and medicinal importance. For being an endangered species, the knowledge of its genetic variability is necessary.
Kellen Regina Boldrini Tolomeotti   +2 more
doaj  

The classification of tetraploid wheat by phylogenetic and cytogenetic analyses

open access: yesBiologia Plantarum, 2020
Tetraploid wheat (Triticum turgidum L.) is an important species within the genus Triticum and harbors many desirable agronomic traits. The classification, origin, and evolution of tetraploid wheat remain confused and controversial, resulting in useless ...
S.-Y. LI   +13 more
doaj   +1 more source

Functional Sex Reversal in Adult Gonochoristic Teleosts is Mediated by Ovarian Germline Stem Cell Plasticity and Somatic Cell Transdifferentiation

open access: yesAdvanced Science, EarlyView.
Oocytes play crucial roles in maintaining ovarian fate in adult gonochoristic fish. Targeted oocyte ablation with aromatase inhibition triggers the activation of surviving germline stem cells and the transdifferentiation of somatic cells from granoulosa/theca to Sertoli/Leydig lineages, inducing a complete and functional female‐to‐male sex reversal ...
Yang Yang   +6 more
wiley   +1 more source

BOULE is Essential for the Dynamic Disassembly of Heat Shock Granules in Male Germ Cells

open access: yesAdvanced Science, EarlyView.
BOULE orchestrates stress granule disassembly in germ cells via a two‐pronged mechanism: it promotes G3BP1 ubiquitination by upregulating TRIM27, generating a signal for VCP/FAF2 recruitment, and it maintains G3BP1 and FAF2 protein levels. BOULE deficiency disrupts disassembly complex formation, leading to impaired heat shock granule clearance ...
Xin Li   +8 more
wiley   +1 more source

Chromosome numbers and meiotic behavior of some Paspalum accessions

open access: yesGenetics and Molecular Biology, 2005
Chromosome number and meiotic behavior were evaluated in 36 Brazilian accessions of the grass Paspalum (which had never previously been analyzed) to determinate which accessions might be useful in interspecific hybridizations.
Eleniza de Victor Adamowski   +4 more
doaj   +1 more source

Cytogenetic study of two Solenanthus Ledeb. species (Boraginaceae) in Iran [PDF]

open access: yesJournal of Cell and Molecular Research, 2013
Chromosome number, meiotic behavior, and pollen viability were analyzed in 2 species of genus Solenanthus, S. stamineus (Desf.) Wettst. and S. circinnatus Ledeb, from Iran. This report is the first cytogenetic analysis of these species.
Massoud Ranjbar   +2 more
doaj   +1 more source

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