Results 31 to 40 of about 1,152,749 (234)

Cytological and Proteomic Analysis of Ginkgo biloba Pollen Intine

Horticultural Plant Journal, 2020
The pollen intine plays important roles in pollen germination and tube growth, but related information in Ginkgo biloba remains unclear. We isolated and obtained de-exined pollen from G. biloba.
Weixing Li, Yunling Ye, Fangmei Cheng, Yan Lu, Biao Jin, Li Wang   +5 more
doaj   +1 more source

Ultrastructure of the pollen grains of Withania somnifera (L.) Dunal (Solanaceae), A study from Saudi Arabia [PDF]

Taeckholmia, 2002
Light microscopy, scanning and transmission electron microscopy were used to study the morphology and theultrastructure of the pollen grains of Withania somnifera (L.) Dunal.
Hussien Alwadie
doaj   +1 more source

A biological nanofoam: The wall of coniferous bisaccate pollen. [PDF]

, 2022
International audienceThe outer layer of the pollen grain, the exine, plays a key role in the survival of terrestrial plant life. However, the exine structure in different groups of plants remains enigmatic.
Stukins, Stephen, Miller, C Giles, Gallet, Benoit, Miller, C.G., Giles Miller, C, Capron, Marie, Mannix, O., Mannix, Oonagh, Capron, M., Falconet, D., Jouneau, P.H., Jouneau, Pierre-Henri, Gallet, B., Cojocaru, Ruxandra, Stukins, S., Cojocaru, R., Pacureanu, A., Pacureanu, Alexandra, Falconet, Denis, Denis Falconet, Alexandra Pacureanu, Stephen Stukins, Ruxandra Cojocaru, Benoit Gallet, C. Giles Miller, Oonagh Mannix, Pierre-Henri Jouneau, Marie Capron   +27 more
core   +1 more source

Defective callose walls and cell plates during abnormal meiosis cause male-sterility in the oat mutant zbs1

Journal of Integrative Agriculture, 2016
: During meiosis in flowering plants, degradation of the callose wall in tetrads releases newly produced microspores, which develop into mature pollen grains.
Xiao SHI, Jin-xia WU, Hai-tao ZHOU, Xiao-hong YANG, Tian-liang LI, Xin-jun ZHANG, Cai YANG, Xiao HAN   +7 more
doaj   +1 more source

Chloride fluxes in lily pollen tubes: a critical reevaluation

, 2004
Microelectrodes, made from a Cl?-selective liquid ion exchanger previously used to measure putative Cl- fluxes in Lilium longiflorum pollen tubes, were characterized. The electrodes were poorly selective, possessing only about 10-fold selectivity for Cl?
Mark A. Messerli, Robert C. Lewis, Kenneth R. Robinson, Robinson, Kenneth R., Lewis, Robert C., Messerli, Mark A., Smith, Peter J.S., Peter J. S. Smith   +7 more
core   +1 more source

Pollen wall formation in Abies concolor and a discussion on wall layer homologies

, 1989
Development of the pollen wall in Abies concolor (Gord. & Glen.) Lindl. is documented using ultrastructural techniques. Pollen wall formation is initiated by the deposition of a microspore surface coat and the formation of callosic protrusions in ...
Marie H. Kurmann
core   +1 more source

Effect of wall-disruption on nutrient composition and in vitro digestion of camellia and lotus bee pollens

Food Science and Human Wellness
The nutrient digestion, absorption and biological activity of bee pollen may be limited due to the complex pollen wall. Here, the effect of superfine grinding technology on the release of nutrients from bee pollen were investigated, and their antioxidant
Yuan Yuan, Shun Zhong, Zeyuan Deng, Guangyan Li, Jinwu Zhang, Hongyan Li   +5 more
doaj   +1 more source

Pollen and microsporangium development in Ziziphus jujuba, Z. mucronata, Paliurus spina-christi and Gouania ulmifolia (Rhamnaceae) [PDF]

Anais da Academia Brasileira de Ciências, 2020
The aim of this paper is to investigate the ultrastructural events that occur during pollen grains development, with emphasis in pollen grain wall and tapetum ontogeny in Ziziphus jujuba, Z.
MARINA M. GOTELLI, ELSA C. LATTAR, GABRIELA ZARVLASKY, BEATRIZ G. GALATI   +3 more
doaj   +2 more sources

Pollen morphology of Curroria, Mondia, Socotranthus and Stomatostemma (Periplocaceae)

Bothalia: African Biodiversity & Conservation, 1993
The pollen morphology of I Planch., O Skeels, Socotranthus Kuntze and Stomatostemma N.E. Br. was studied.All the genera are characterized by pollen grains arranged in tetrads. The arrangement of the grains may be rhomboidal, tetrahedral or decussate. The
R. L. Verhoeven, H. J. T. Venter
doaj   +1 more source

Flexible Pressure Sensor With Co‐Optimized Sensitivity and Linearity Based on Gradient Toroidal Microstructures

Advanced Materials Technologies, EarlyView.
A flexible piezoresistive pressure sensor with gradient toroidal CNT/PDMS microstructures is reported. The hierarchical geometry enables sequential electrode contact, achieving a sensitivity of 256.20 kPa−1 and linear response (R2 = 0.99) over 0–1000 kPa.
Rongmei Wang, Ruolin Liu, Ming Lei, Yifan Liu, Fengming Hu, Bing Ji, Chao Peng, Jianyi Luo, Bingpu Zhou   +8 more
wiley   +1 more source