Results 91 to 100 of about 15,023,284 (301)

Female gametophyte and pollen tube of Epilobium palustre L.

Acta Societatis Botanicorum Poloniae, 2015
The monosporic, tetranucleate embryo sac of Epilobium palustre (Onagraceae) develops from the micropylar megaspore in a linear tetrad. In mononucleate embryo sacs a peculiar chromatic structure associated with a nucleolus appears in the nucleus.
Józef Bednara
doaj   +1 more source

Megasporogenesis and Development of Embryo Sac inCrocus SativusL. [PDF]

Caryologia, 1987
SUMMARYCytological observations during megasporogenesis and embryo sac development of Crocus sativus L. are reported. During meiotic divisions irregular assortment of chromosomes was observed; consequently, megaspores resulted numerically variable (4–6) and they were genetically unbalanced.
openaire   +3 more sources

TAB2 Causes Neuronal Damage by Aggravating Microglia‐Mediated Neuroinflammation in Parkinson's Disease

Advanced Science, EarlyView.
In microglia, STAT3 upregulates TAB2, which promotes NF‐κB activation through its NZF domain‐mediated recognition of K63‐linked ubiquitin chains, leading to inflammatory cytokine release and subsequent neuronal injury. Lumacaftor suppresses TAB2 expression and directly binds the TAB2‐NZF domain to interrupt K63 ubiquitin recognition, thereby blocking ...
Yanhao Zhao, Zimeng Huang, Jianing Gao, Aolan Li, Huizhi Wang, Yingchuan Chen, Guanyu Zhu, Xin Zhang, Yin Jiang, Moxuan Zhang, Fangang Meng, Jianguo Zhang, Tingting Du   +12 more
wiley   +1 more source

Development of Ovule and Embryo Sac in Blotched Tree Peony (Paeonia rockii)

, 1999
This paper dealt with the ovule ontogenesis and development, the megasporogenesis and the embryo sac development in Paeonia rockii cvs. The ovule, originated from the tri-zonate primordium, was anatropous, bitegmic and crassinucellate.
Fang-yun Cheng, Aoki, Noriaki
core   +1 more source

Development of Embryo Sac and Embryo in Euphorbia preslii and E. splendens [PDF]

Botanical Gazette, 1917
1. The cyathium of both species studied begins as a papilla which arises between two bracts. The order of appearance of the parts of the cyathium is as follows: staminate flowers, involucre, ovules, carpels, and secondary staminate flowers which arise as branches of the first set. 2. The megaspore mother cell is subepidermal in origin in E.
openaire   +2 more sources

NICE: A Two‐Step Non‐Invasive Framework for Embryo cfDNA Read Enrichment and Quality Assessment

Advanced Science, EarlyView.
The non‐invasive NICE framework, built on an ensemble stacking machine learning model, prioritizes embryos by analyzing cell‐free DNA from spent culture medium. By integrating multimodal signals, including genomic and epigenetic profiles, this automated approach standardizes morphological assessment without human bias, paving the way for more precise ...
Xueya Zhou, Shu Ding, Zhenyi Zhang, Qiaoling Shangguan, Jie Qiao, Peijie Zhou, Yidong Chen   +6 more
wiley   +1 more source

Engineered Transformer Base Editor with Enhanced Editing Efficiency

Advanced Science, EarlyView.
A highly efficient transformer base editor system achieves robust genomic editing in a humanized mouse model. This work establishes a versatile and translatable platform, opening new avenues for precision gene therapy. ABSTRACT Canonical cytosine base editors (CBEs) achieve precise C‐to‐T conversions without inducing DNA double‐strand breaks (DSBs ...
Bowen Chen, Letong Liang, Rui Xu, Tianyi Wang, Hongyan Chen, Daru Lu   +5 more
wiley   +1 more source

The Origin and Development of the Embryo Sac and Embryo of Dendrophthora opuntioides and D. gracile. II [PDF]

Botanical Gazette, 1913
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Palmitoyl Acyltransferase Zdhhc17 Promotes Functional Recovery After Spinal Cord Injury by Targeting the Nuclear Transport Factors Kpna2 and Ipo9

Advanced Science, EarlyView.
In this study, we demonstrate that Zdhhc17, acting as a PAT, suppresses neuronal apoptosis and promotes axon regeneration after injury, thereby enhancing functional recovery following SCI. In this context, Kpna2 and Ipo9 serve as novel palmitoylation substrates of Zdhhc17, whose palmitoylation prevents the injury‐induced degradation of their proteins ...
Meixuan Chen, Huan Chen, Sining Ding, Fan Liu, Xiaofei Zheng, Yuan Wang, Ruitu Tian, Huan Li, Peilin Liu, Le Hu, Bin Liu, Limin Rong, Mangmang Li   +12 more
wiley   +1 more source

Floral morphology and embryo sac development in Burretiodendron kydiifolium Y. C. Hsu et R. Zhuge (Tiliaceae) and their systematic significance

, 1998
Floral morphology and development of megaspore and megagametophyte in Burretiodendron kydiifolium are described. The ovule is anatropous, crassinucellate and bitegmic. The archesporium is multicellular and usually two cells develop to megasporocytes. The
Tang, YA, Int Ctr Integrated Mt Dev, GPO Box 3226, Kathmandu, Nepal., Tang, YA   +1 more
core