amiRRALF4/19-1 pollens were deposited on the pistils of A. thaliana Col-0 at stages 14 (TT loose) and 12 (TT tight) and on mature T. salsuginea pistils (TT tight), respectively. GUS staining of pollen tubes was performed at 16 HAP. Arrows indicate the growing front of pollen ...
Plant鈥揳nimal interactions may be affected by factors beyond the scale of the restoration. For example, surrounding landscape context may influence pollinator abundance and consequently the amount of pollen deposited. Decreased pollen receipt might then limit seed set. We hypothesized that in ...
The genotype of the deposited pollen may depend on the pollinator species, particularly, when movement patterns are species specific. Hence, pollinator identity can influence fruit quality, as the source of the pollen (i.e., the pollen parentage) is well known to affect this trait, a ...
Once it's deposited at its destination, grains of pollen settle on a flower's stigma -- the entrance to the ovary. Like with the gymnosperms, germination and pollen-tube formation follow fertilization, but this time both sperm are used. While one fertilizes the egg cell, the other is ...
What is Pollen Tube? The pollen tube is a hollow tube that develops from the pollens after pollination. The development of a pollen tube takes place once pollens are implanted on the stigma of a flower. Therefore, it develops through the stigma into the style and finally into the ovary of...
Pollen is a crucial source of nutrients and energy for pollinators. It also provides a unique habitat and resource for microbiota. Previous research on the microbiome of pollen has largely focused on angiosperm systems, with limited research into coniferous gymnosperms. This study characterises the ...
Once in the hive, that water gets trophallactically passed between bees, and deposited inside cells surrounding the brood nest, as well as on the top bars of Langstroth hives [[9], [10]] (Figure 1).Fig. 1 A photo of the top bars in one of my hives on a hot day. It’s easy...
The fossiliferous oil shale of the Fossillagerstätte Enspel was deposited in a deep crater lake (Schindler and Wuttke 2015) and yielded an exceptionally preserved biota (see below). The interval of deposition of the fossiliferous black pelites is well-constrained by both biostratigraphical data...
The inner wall of the pollen grain is called the intine. Most, if not all, of the components of the exine derive from the sporophytic part of the anther (i.e., from the tapetum, a cell layer lining the anther) and are deposited on the pollen surface, while most components of the ...
Non-pollen palynomorphs (NPPs) are the “extra” microfossils that can be found in palynological samples during microscopy. NPPs include all types of remains of different organisms which have a size that is similar to that of the pollen grains (i.e. 10–250 μm), and can survive the ...