The pollen grain is the carrier of the male gametes or their progenitor cell, in higher plants. In a single unit, each grain contains all the genetic information required to specify an entire haploid plant organism (for example, pollen embryoids in tissue culture), or to unite with the ...
In angiosperms, the pollen grain is the male gametophyte and consists of two sperm cells within a larger vegetative cell, which produces a pollen tube1. The tip-growing pollen tube transports the cytoplasm and sperm cells to the apical region through the periodical production of thick callose plu...
Volume changes in the pollen 7 grain of Corylus avellana L. (Corylaceae) during development. Grana 1997;36(5):289- 8 92.Frenguelli, G., Ferranti, F., Tedeschini, E., Andreutti, R. (1997) Volume changes in the pollen grain of Corylus avellana L. (Corylaceae) during development....
Our model proposes that pollen tube growth is a form of cell movement where the tube tip can be considered analogous to a migrating cell which leaves a trail of extracellular matrix (the spent pollen tube) behind. We demonstrate that the tube cell can convey the sperm cells to the ovule an...
Random walks crop up across statistical physics. For instance, consider a grain of pollen dropped onto a thin film of water. The water molecules buffet the grain, which random-walks across the film. Robert Brown observed this walk in 1827, so we call itBrownian motion. Or consider a magnet...
Large-scale climate variability is driven by the Intertropical Convergence Zone (ITCZ), characterised by a north/southwards migration which produces a distinct seasonality in precipitation. The dry season generally falls between January and April, with the wet season most pronounced between May and ...
Sweet potatoIpomoea batatas(L.) Lam. is an important root and tuber crop worldwide, which produces a large amount of starch, carbohydrates, and other nutrients. It is well established as a crucial staple crop and industrial resource in many regions with high population density, such as Africa...
Cell Research(2024) OsSRF8 interacts with OsINP1 and OsDAF1 to regulate pollen aperture formation in rice Keyi Chen Qiming Wang Jianmin Wan Nature Communications(2024) An Improved Chromosome-Level Genome Assembly and Annotation of Belted Beard Grunt (Hapalogenys analis) ...
MutS HOMOLOG1 is a nucleoid protein that alters mitochondrial and plastid properties and plant response to high light. Plant Cell 2011; 23:3428–3441. Article CAS Google Scholar Virdi KS, Laurie JD, Xu YZ, et al. Arabidopsis MSH1 mutation alters the epigenome and produces heritable changes ...
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