Results 31 to 40 of about 26,188 (195)

Dissecting the regulation of pollen tube growth by modelling the interplay of hydrodynamics, cell wall and ion dynamics

Frontiers in Plant Science, 2014
Hydrodynamics, cell wall and ion dynamics are all important properties that regulate pollen tube growth. Currently, the two main pollen tube growth models, the cell wall model and the hydrodynamic model do not appear to be reconcilable.
Junli eLiu, Patrick J. Hussey
doaj   +1 more source

The ATP-binding cassette (ABC) transporter OsABCG3 is essential for pollen development in rice

Rice, 2018
Background The pollen wall, which protects male gametophyte against various stresses and facilitates pollination, is essential for successful reproduction in flowering plants.
Zhenyi Chang, Mingna Jin, Wei Yan, Hui Chen, Shijun Qiu, Shan Fu, Jixing Xia, Yuchen Liu, Zhufeng Chen, Jianxin Wu, Xiaoyan Tang   +10 more
doaj   +1 more source

Tomato Pollen Wall Development, and the Role of FIN4 in the Formation of the Pollen Intine

, 2021
The cell wall of a mature pollen grain is a highly specialized, multilayered structure. The outer, sporopollenin-based exine protects and supports the pollen grain, while the inner intine, composed primarily of cellulose, is essential for pollen ...
Jaffri, Syeda Roop Fatima
core   +1 more source

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

Pollen Wall

, 2018
Abstracttectum/tectate: outer more or less continuous ektexine layer; tectum condition can be eutectate or ...
Halbritter, Heidemarie, Ulrich, Silvia, Grímsson, Friðgeir, Weber, Martina, Zetter, Reinhard, Hesse, Michael, Buchner, Ralf, Svojtka, Matthias, Frosch-Radivo, Andrea   +8 more
openaire   +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

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

An extracellular transglutaminase is required for apple pollen tube growth

, 2010
An extracellular form of the calcium-dependent protein-crosslinking enzyme TGase (transglutaminase) was demonstrated to be involved in the apical growth of Malus domestica pollen tube.
Coutts, IG, Griffin, Martin, Cresti M, SERAFINI FRACASSINI, DONATELLA, Hargreaves, AJ, Cai, G, Furutani, Yutaka, Bonner, Philip L.R., Hirose, Shigehisa, Griffin M, Griffin, M, Hargreaves, Alan Jeffrey, Cai, Giampiero, Serafini Fracassini, D., Verderio, Elisabetta Am, Furutani, Y., Serafini, Donatella, DI SANDRO, ALESSIA, Bonner PL, Cresti, M, Bonner, PL, Scarpellini, Alessandra, Hirose S, Iorio, RA, Di, Sandro, Scarpellini, A., Verderio, E., Furutani Y, Serafini-Fracassini, D, Bonner, P. L., Shigehisa, H., Del Duca, S., Iorio, R. A., Cresti, Mauro, Cai G, IORIO, ROSA ANNA, Hargreaves, A. J., Di Sandro, A., Scarpellini A, Verderio Edwards E, Scarpellini, A, Furutani, Y, Coutts IG, Coutts, Ian G.C., Faleri, C, Faleri, Claudia, Hargreaves AJ, DEL DUCA, STEFANO, Hirose, S, Coutts, I. G. C., Verderio, E, Griffin, M., Del, Duca, Faleri C   +53 more
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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