Results 1 to 10 of about 26,188 (195)

Rice GA3ox1 modulates pollen starch granule accumulation and pollen wall development. [PDF]

open access: yesPLoS ONE, 2023
The rice GA biosynthetic gene OsGA3ox1 has been proposed to regulate pollen development through the gametophytic manner, but cellular characterization of its mutant pollen is lacking.
Kun-Ting Hsieh   +11 more
doaj   +8 more sources

Sequential Deposition and Remodeling of Cell Wall Polymers During Tomato Pollen Development [PDF]

open access: yesFrontiers in Plant Science, 2021
The cell wall of a mature pollen grain is a highly specialized, multilayered structure. The outer, sporopollenin-based exine provides protection and support to the pollen grain, while the inner intine, composed primarily of cellulose, is important for ...
Syeda Roop Fatima Jaffri   +1 more
doaj   +4 more sources

Cell Wall Composition, Biosynthesis and Remodeling during Pollen Tube Growth

open access: yesPlants, 2013
The pollen tube is a fast tip-growing cell carrying the two sperm cells to the ovule allowing the double fertilization process and seed setting. To succeed in this process, the spatial and temporal controls of pollen tube growth within the female organ ...
Jean-Claude Mollet   +3 more
doaj   +4 more sources

Microsporogenesis in vivo and in vitro. Autofluorescence of pollen wall of Lilium and changes in pollen wall of Gasteria in Lilium anther

open access: yesActa Societatis Botanicorum Poloniae, 2014
Autafluarescence of the pollen wall of Lilium shows a correlative change with its development. When the pollen of Gasteria is injected into the anther of Lilium, it exhibits almost the same characteristics of wall autofluorescence as those of Lilium ...
M. T. Willemse
doaj   +8 more sources

Less and shrunken pollen 1 (LSP1) encodes a member of the ABC transporter family required for pollen wall development in rice (Oryza sativa L.)

open access: yesCrop Journal, 2020
Pollen fertility is an agronomic trait that strongly influences rice yield. Recent studies have revealed that the development of the pollen wall is required for pollen fertility and is regulated by several genes. However, the mechanisms underlying pollen
Tao Luo   +17 more
doaj   +3 more sources

Comparative transcriptome analysis and ChIP-sequencing reveals stage-specific gene expression and regulation profiles associated with pollen wall formation in Brassica rapa [PDF]

open access: yesBMC Genomics, 2019
Background Genic male sterility (GMS) line is an important approach to utilize heterosis in Brassica rapa, one of the most widely cultivated vegetable crops in Northeast Asia. However, the molecular genetic mechanisms of GMS remain to be largely unknown.
Xiuping Shen   +8 more
doaj   +2 more sources

A Complex Journey: Cell Wall Remodeling, Interactions, and Integrity During Pollen Tube Growth

open access: yesFrontiers in Plant Science, 2020
In flowering plants, pollen tubes undergo a journey that starts in the stigma and ends in the ovule with the delivery of the sperm cells to achieve double fertilization.
Milagros Cascallares   +7 more
doaj   +3 more sources

Analysis of the Spatiotemporal Digestion Characteristics of Pine Pollen Processed by Different Methods in Middle-Aged Adults Using an In Vitro Digestion Model System [PDF]

open access: yesFoods
This study utilized a proprietary dynamic biomimetic digestion reactor to compare the differential behaviors of broken-wall pine pollen (PB), whole-wall pine pollen (WPB), and pine pollen wall extract (T) during simulated gastrointestinal digestion and ...
Kexin Yu   +8 more
doaj   +2 more sources

CaZAT5 delays the flowering time in tomato and affects pollen viability and anther dehiscence. [PDF]

open access: yesPLoS Genetics
Male sterility (MS) plays a crucial role in plant reproduction and hybrid breeding as it is associated with pollen viability and release. However, the regulatory mechanisms governing anther dehiscence in peppers remain poorly characterized.
Jiachang Xiao   +9 more
doaj   +2 more sources

Hidden Xyloglucan Architecture of the Pollen Intine in Gagea lutea Revealed by Sequential Enzymatic Unmasking [PDF]

open access: yesBiology
The organisation of hemicelluloses within the pollen intine of many monocots remains inadequately characterised, partly due to the masking of epitopes within complex wall matrices. In this study, mature pollen grains of Gagea lutea (L.) Ker-Gawl.
Małgorzata Kapusta   +2 more
doaj   +2 more sources

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