Results 71 to 80 of about 1,152,749 (234)

Vitis vinifera - a chemotaxonomic approach: Pollen wall proteins [PDF]

, 2015
The electrophoretic pattern of the pollen wall proteins from clones of cv. Nebbiolo grown in different areas show a geographical clustering.
Villa, P., Zanardini, E., Gianazza, E-., Manini, F., Cargnello, G., Tedesco, G., Gianazza, E.   +6 more
core   +1 more source

‘The most advanced outpost of cultivation’: palynological evidence for cereal agriculture and population resilience in a marginal upland environment

Journal of Quaternary Science, EarlyView.
ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley   +1 more source

Spermine Regulates Pollen Tube Growth by Modulating Ca2+-Dependent Actin Organization and Cell Wall Structure

Frontiers in Plant Science, 2017
Proper growth of the pollen tube depends on an elaborate mechanism that integrates several molecular and cytological sub-processes and ensures a cell shape adapted to the transport of gametes.
Iris Aloisi, Giampiero Cai, Claudia Faleri, Lorella Navazio, Donatella Serafini-Fracassini, Stefano Del Duca   +5 more
doaj   +1 more source

Studies on in vitro manipulation of male and female reproductive systems of flowering plants [PDF]

, 1993
The overall aim of this research project is to investigate the possibility of using pollen as a vector for transporting extracellular substances to the site of gamete fusion in the embryo sac.
Hussein, N, Hussein, Noureldaim
core  

Expression of a polygalacturonase enzyme in germinating pollen of Brassica napus

, 2001
Penetration of pollen tubes through stigmatic tissues in Brassica napus L. may involve the release of cell wall modifying enzymes from the pollen tube tip.
Daggard, Grant, Dearnaley, John
core   +1 more source

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

Journal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen, Zenobia Jacobs, Caitlyn Scobie, Sam Marx, William Reynolds, Matthew S. Forbes, Haidee Cadd, Xue Rui, Laura Mogensen, Alexandru Codilean, Réka H. Fülöp, Klaus M. Wilcken, Fabian Boesl, Alex F. Wall, Nicola Stromsoe   +14 more
wiley   +1 more source

Tapetal Expression of BnaC.MAGL8.a Causes Male Sterility in Arabidopsis

Frontiers in Plant Science, 2019
Monoacylglycerol lipase (MAGL) hydrolyzes monoacylglycerol, producing free fatty acid and glycerol. Although this enzyme has been shown to play important roles in mammal, its potential function in plants remains poorly understood. In a survey of the MAGL
Jie Gao, Qun Li, Nan Wang, Baolong Tao, Jing Wen, Bin Yi, Chaozhi Ma, Jinxing Tu, Tingdong Fu, Qiang Li, Jitao Zou, Jinxiong Shen   +11 more
doaj   +1 more source

MicroPoem: experimental investigation of birch pollen emissions [PDF]

, 2010
Diseases due to aeroallergens constantly increased over the last decades and affect more and more people. Adequate protective and pre-emptive measures require both reliable assessment of production and release of various pollen species, and the ...
Michel, Dominik, Gehrig, Regula, Rotach, Mathias   +2 more
core  

Climate‐modulated accumulation and erosion of sediments in the Rodderberg crater basin for the last 439 ka (East Eifel Volcanic Field, Germany)

Journal of Quaternary Science, EarlyView.
ABSTRACT Glacial/interglacial climate cycles since marine isotope stage (MIS) 12 influenced the discontinuous and 73 m‐long sediment record from the volcanic crater of Rodderberg in the East Eifel Volcanic Field, Germany. High‐resolution grain size and geochemical data have been valued by numerical dating techniques (radiocarbon and luminescence dating,
Bernd Zolitschka, Ines Hogrefe, An‐Sheng Lee, Maarit Kalliokoski, Manfred Frechen   +4 more
wiley   +1 more source

Visualization study on uptake and distribution of Pdots in Arabidopsis thaliana pollen

上海师范大学学报. 自然科学版
Pollen-mediated genetic transformation enables gene editing and trait improvement with stable inheritance to offspring, demonstrating significant application prospects in crop genetic breeding.
LIU Jiantao, CAO Tingting, LI Qingzhi, CHEN Nan   +3 more
doaj   +1 more source