Results 71 to 80 of about 78,784 (260)
Callose (β-1,3 glucan) is essential for Arabidopsis pollen wall patterning, but not tube growth [PDF]
, 2005 Background: Callose (β-1,3 glucan) separates developing pollen grains, preventing their underlying walls (exine) from fusing. The pollen tubes that transport sperm to female gametes also contain callose, both in their walls as well as in the plugs that ...
Swanson, Rob
core +2 more sources
Biological Diversity, EarlyView.Paphiopedilum purpuratum Mediates Adaptation via a Dual‐Fungal Strategy: Confronting a physiological trade‐off (↑seed set vs. ↓photosynthesis), Paphiopedilum purpuratum restructures its root microbiome. Mycorrhizal fungi stabilize into a resilient core network, whereas non‐mycorrhizal fungi shift to a dynamic beneficial periphery.
Yong Tan +4 more
wiley +1 more source
Ornamental Horticulture, 2019 Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand ...
Zulkarnain Zulkarnain +2 more
doaj +1 more source
High-resolution palynological analysis in Lake Sapanca as a tool to detect recent earthquakes on the North Anatolian Fault [PDF]
, 2009 High-resolution palynological analysis of a 38-cm-long core collected from Lake Sapanca, northwest Turkey, reveals large earthquakes that occurred during the second half of the 20th century along the North Anatolian Fault Zone. Four events have disturbed
Boyraz, S, Gürbüz, A, Leroy, SAG
core +1 more source
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Interaction Between Actin and Microtubules During Plant Development
Cytoskeleton, EarlyView.ABSTRACT The dynamic interaction between actin filaments (AFs) and microtubules (MTs) plays a crucial role in regulating key developmental and physiological processes in plant cells, particularly in the formation of specialized cell types with distinct shapes and functions, such as pollen tubes, trichomes, and leaf epidermal cells.
Zining Wu +3 more
wiley +1 more source
PEK14: A Kinesin‐4 Necessary for Male‐Derived Fertility in Arabidopsis thaliana
Cytoskeleton, EarlyView.ABSTRACT Of the 61 kinesins annotated in Arabidopsis thaliana, many are still without assigned function. Here, we have screened an insertional mutant library of Arabidopsis pollen‐expressed kinesins for fertility defects. Insertional mutants for three kinesins showed a significant reduction in seed set.
Isabella N. Mendes +6 more
wiley +1 more source
Pollen morphology of 31 taxa of genus Iris(Iridaceae)and its taxonomic implications
Guangxi ZhiwuTo investigate the pollen morphology and its potential taxonomic implications for genus Iris L.(Iridaceae), the pollen grains from 31 taxa across three subgenera of Iris were used as materials.
ZHU Ying*, SONG Hua, LI Kai, ZHANG Lei, WANG Baibing
doaj +1 more source
Acta Botânica Brasílica, 2018 Heteranthery, the presence of different types of stamens in a flower, may reduce the conflict between pollinators and plants by ensuring the resource for the pollinator without drastically affecting the availability of viable male gametes for ...
Bruna Karen Pinheiro-Costa +3 more
doaj +1 more source
Toward in vitro fertilization in Brachiaria spp. [PDF]
, 2010 Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of non-dehiscent anthers on a solid medium near isolated ovaries.
Alves, E.R. +5 more
core +2 more sources