Results 121 to 130 of about 67,099 (264)

Viabilidad de polen e irregularidades meióticas en una colección de stevia rebaudiana (Bertoni) Bertoni cultivada en Tucumán, Argentina [PDF]

, 2018
Stevia rebaudiana (Bertoni) Bertoni (2n=2x=22) (Asteraceae family) is a species of economic value due to the presence of steviol glycosides in leaves -mainly stevioside and rebaudioside A- which are non-caloric sugars.
Budeguer, Carlos Jorge, Camadro, Elsa Lucila, Erazzo, L. E.   +2 more
core  

Testicular SIRT1 Loss Reveals an Aging‐Like Proteomic Landscape and Precipitates Reproductive Deterioration

Andrology, EarlyView.
ABSTRACT Background Advanced paternal age is associated with reduced male fertility and testicular dysfunction. Among the molecular regulators involved in aging, SIRT1, a NAD+‐dependent deacetylase, plays a pivotal role in maintaining oxidative balance and cellular homeostasis.
María Iniesta‐Cuerda, Jiřina Havránková, Hedvika Řimnáčová, Jiří Moravec, František Liška, Martin Knytl, Milena Králíčková, Jan Nevoral   +7 more
wiley   +1 more source

Heat shock protein 101 safeguards meiotic thermotolerance of male germlines in rice and Arabidopsis

Crop Journal
Heat stress induces severe meiotic defects in plants, leading to significant male sterility and substantial yield losses in crops. However, few genes involved in meiotic thermotolerance have been characterized.
Yunfei Li, Junwen Yang, Jiale Zhang, Zhiqi Xin, Rui Xu, Keli Qiu, Fujian Wang, Fengkun Sun, Haiyang Jiang, Weiwei Jin, Pengfei Jiang   +10 more
doaj   +1 more source

Nonreduction via meiotic restitution and pollen heterogeneity may explain residual male fertility in triploid marine halophyte Limonium algarvense (Plumbaginaceae)

Caryologia, 2019
The cosmopolitan halophylic genus Limonium (Plumbaginaceae) presents high cytogenetic interest because of the natural occurrence of diploid and polyploid variants.
Sofia I. R. Conceição, Ana Sofia Róis, Ana D. Caperta   +2 more
doaj   +1 more source

Chromosomal and histological evidences of infertility in F2 and F2 backcross. Hybrid generations of Clarias anguillaris and Heterobranchus longifilis [PDF]

, 2001
Male meiosis was studied in 9 different mating combinations in parental, first, second and backcross generation hybrids of Clarias anguillaris and Heterobranchus longifilis. 27 bivalents were recorded in metaphase I for seven mating combinations.
Aluko, P.O.
core  

Testis‐Enriched F‐Box Protein FBXO39 Is Important for Spermiogenesis and Male Fertility in Mice

Andrology, EarlyView.
ABSTRACT Background The SCF (Skp–Cullin–F‐box) complex is a major class of E3 ubiquitin ligases. F‐box proteins constitute the SCF complex and play a critical role in recognizing substrates for ubiquitination. In mice, several F‐box proteins, including FBXO36 and FBXO39, are predominantly expressed in testes.
Yuki Kaneda, Haruhiko Miyata, Masahito Ikawa   +2 more
wiley   +1 more source

Chromodomain Helicase DNA–Binding Proteins and Spermatogenesis: Current Advances

Andrology, EarlyView.
ABSTRACT Background Male infertility is a prevalent clinical condition, with approximately one‐third of cases classified as idiopathic, frequently stemming from impaired spermatogenesis because of dysregulated gene expression. Chromodomain helicase DNA‐binding (CHD) proteins are central chromatin remodelers that orchestrate this epigenetic regulation ...
Mingrui Zhang, Di Liu, Guoqiang Liu, Minggang Zhu, Feng Pan   +4 more
wiley   +1 more source

Mesenchymal Stem Cells From a Klinefelter Syndrome Patient: Functional Characterization and Therapeutic Implications

Andrology, EarlyView.
ABSTRACT Background Cell therapy, particularly those utilizing mesenchymal stem/stromal cells (MSCs), is gaining traction as a therapeutic option for regenerative treatment in patients with limited therapeutic options. Although the safety of MSC‐based interventions is well established, uncertainties remain regarding how genetic abnormalities and ...
Marzena Zychowicz, Wioletta Lech, Anna Figiel‐Dabrowska, Marta Kot, Magdalena Murzyn, Natalia Malawska, Barbara Pienkowska‐Grela, Zuzanna Sandowska‐Markiewicz, Iwona Ziolkowska‐Suchanek, Agnieszka Zimna, Tomasz Oldak, Natalia Rozwadowska, Anna Sarnowska   +12 more
wiley   +1 more source

MAX controls meiotic entry in sexually undifferentiated germ cells

Scientific Reports
Meiosis is a specialized type of cell division that occurs physiologically only in germ cells. We previously demonstrated that MYC-associated factor X (MAX) blocks the ectopic onset of meiosis in embryonic and germline stem cells in culture systems. Here,
Ayumu Suzuki, Kousuke Uranishi, Masazumi Nishimoto, Yosuke Mizuno, Seiya Mizuno, Satoru Takahashi, Robert N. Eisenman, Akihiko Okuda   +7 more
doaj   +1 more source

Assessing a Model for a Complex Systemic Disorder—The Value of Male Mice With a Supernumerary X Chromosome for Klinefelter Syndrome Research

Andrology, EarlyView.
ABSTRACT Introduction Direct experimental investigation of Klinefelter syndrome (KS) in patients is limited because the syndrome manifests heterogeneously and affects multiple organ systems. Studying KS therefore requires a model that captures this complexity as accurately as possible while still permitting controlled experimental manipulation ...
Fariba Saadati, Joachim Wistuba
wiley   +1 more source