Results 191 to 200 of about 24,573 (227)

Pollen grain wall structure ofCaytonanthus arberi (Caytoniales)

Plant Systematics and Evolution, 1986
The pollen grain wall structure ofCaytonanthus arberi was studied with SEM and TEM. The monosulcate, bisaccate pollen grain of this taxon has an alveolar wall structure that is more like that found in saccate Conifers than primitive Angiosperms. Pollen grain morphology does not support a Caytonialean ancestry for the Angiosperms.
Michael S. Zavada, William L. Crepet
openaire   +1 more source

Boron deficiency alters cytosolic Ca2+ concentration and affects the cell wall components of pollen tubes in Malus domestica.

Plant biology, 2019
Boron (B) is essential for normal plant growth, including pollen tube growth. B deficiency influences various physiological and metabolic processes in plants.
Kefeng Fang, B. Du, Qing Zhang, Y. Xing, Q. Cao, Ling Qin   +5 more
semanticscholar   +1 more source

Molecular Cell Biology of Pollen Walls

2013
The pollen wall comprises the outer exine and the inner intine layers. It plays important roles in protecting pollen from various environmental stresses including microbial attack and in cell-cell recognition during pollination. The exine is further divided into a sexine and a nexine layer. The material for the exine is provided directly by the tapetal
Yue Lou, Jun Zhu, Zhongnan Yang
openaire   +1 more source

Vitis vinifera - a chemotaxonomic approach: Pollen wall proteins

1990
VITIS - Journal of Grapevine Research, Vol. 29 (1990): Vitis (Special Issue)
TEDESCO G., CARGNELLO G., ZANARDINI, ELISABETTA, VILLA P., MANNINI F., GIANAZZA E.   +5 more
openaire   +3 more sources

Mechanisms of pollen wall development in Lysimachia vulgaris

Protoplasma
Exine, this complex sporopollenin-containing and highly variable among taxa envelope of the male gametophyte, consists of two layers, ectexine and endexine. We traced in detail the pollen wall development in Lysimachia vulgaris (Primulaceae), with emphasis on driving forces and critical ontogenetic time.
Nina I. Gabarayeva, Valentina V. Grigorjeva, Dmitri A. Britski   +2 more
openaire   +2 more sources

The Bacterial Cell Wall: From Lipid II Flipping to Polymerization

Chemical Reviews, 2022
Sujeet Kumar, Aurelio Mollo, Daniel E Kahne   +2 more
exaly  

Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment

Chemical Reviews, 2023
Stephen J Eichhorn
exaly  

Pollen PCP-B peptides unlock a stigma peptide–receptor kinase gating mechanism for pollination

Science, 2021
Chen Liu, Lian-ping Shen, Yu Xiao
exaly  

OsPKS2 is required for rice male fertility by participating in pollen wall formation

Plant Cell Reports, 2018
T. Zou, Mingxing Liu, Qiao Xiao, Tao Wang, Dan Chen, Tao Luo, Guoqiang Yuan, Qiao Li, Jun Zhu, Yueyang Liang, Q. Deng, Shiquan Wang, A. Zheng, Lingxia Wang, Ping Li, Shuangcheng Li   +15 more
semanticscholar   +1 more source

Current-driven magnetic domain-wall logic

Nature, 2020
Zhaochu Luo, Aleš Hrabec, Trong Phuong Dao   +2 more
exaly