Results 21 to 30 of about 26,188 (195)

2, 6-Dichlorobenzonitrile causes multiple effects on pollen tube growth beyond altering cellulose synthesis in Pinus bungeana Zucc. [PDF]

open access: yesPLoS ONE, 2013
Cellulose is an important component of cell wall, yet its location and function in pollen tubes remain speculative. In this paper, we studied the role of cellulose synthesis in pollen tube elongation in Pinus bungeana Zucc.
Huaiqing Hao   +4 more
doaj   +1 more source

Maintenance of Methyl-Esterified Pectin Level in Pollen Mother-Cell Stages Is Required for Microspore Development

open access: yesPlants, 2023
Pectin modification and degradation are vital for plant development, although the underlying mechanisms are still not well understood. Furthermore, reports on the function of pectin in early pollen development are limited.
Kazuya Hasegawa   +4 more
doaj   +1 more source

Massively Parallelized Pollen Tube Guidance and Mechanical Measurements on a Lab-on-a-Chip Platform. [PDF]

open access: yesPLoS ONE, 2016
Pollen tubes are used as a model in the study of plant morphogenesis, cellular differentiation, cell wall biochemistry, biomechanics, and intra- and intercellular signaling. For a "systems-understanding" of the bio-chemo-mechanics of tip-polarized growth
Naveen Shamsudhin   +8 more
doaj   +1 more source

DCET1 Controls Male Sterility Through Callose Regulation, Exine Formation, and Tapetal Programmed Cell Death in Rice

open access: yesFrontiers in Genetics, 2021
In angiosperms, anther development comprises of various complex and interrelated biological processes, critically needed for pollen viability. The transitory callose layer serves to separate the meiocytes.
Riaz Muhammad Khan   +11 more
doaj   +1 more source

In vitro grown pollen tubes of Nicotiana alata actively synthesise a fucosylated xyloglucan. [PDF]

open access: yesPLoS ONE, 2013
Nicotiana alata pollen tubes are a widely used model for studies of polarized tip growth and cell wall synthesis in plants. To better understand these processes, RNA-Seq and de novo assembly methods were used to produce a transcriptome of N. alata pollen
Edwin R Lampugnani   +9 more
doaj   +1 more source

Pollen-wall Formation in Arum alpinum [PDF]

open access: yesAnnals of Botany, 2005
Arum alpinum has a quite uncommon pollen wall. A sporopolleninous ektexine is missing. The outermost pollen wall layer is formed by the endexine which is covered by polysaccharidic ornamentation elements. An ontogenetical investigation was accomplished to clarify pollen-wall development, with special reference to callose and pollen-wall development ...
Elisabeth M, Anger, Martina, Weber
openaire   +2 more sources

Transcriptome analysis provides insight into the regulatory mechanisms underlying pollen germination recovery at normal high ambient temperature in wild banana (Musa itinerans)

open access: yesFrontiers in Plant Science, 2023
IntroductionCultivated banana are polyploid, with low pollen fertility, and most cultivars are male sterile, which leads to difficulties in banana breeding research. The selection of male parent with excellent resistance and pollen fertility is therefore
Chunyu Zhang   +10 more
doaj   +1 more source

Observations and modelling of birch pollen emission and dispersion from an isolated source [PDF]

open access: yes, 2014
The occurrence of allergic diseases in western countries increased during the last decades due to greater awareness towards a hygienic lifestyle. The hygiene hypothesis relates the reduced expo- sure to microbial pollution to an underdevelopment of the
Michel, Dominik
core   +1 more source

Radioautographic visualization of incorporation of lipid precursors into anthers of Muscari comosum (L.) Mili.

open access: yesActa Societatis Botanicorum Poloniae, 2015
Incorporation of the following lipid precursors: DL-mevalonic acid-2 3H, 3H palmitic acid and acetic acid-3H sodium salt, into the anther cells of Muscari comosum (L.) Mili. has been investigated.
Barbara Gabara
doaj   +1 more source

Arabidopsis Novel Microgametophyte Defective Mutant 1 Is Required for Pollen Viability via Influencing Intine Development in Arabidopsis

open access: yesFrontiers in Plant Science, 2022
The pollen intine layer is necessary for male fertility in flowering plants. However, the mechanisms behind the developmental regulation of intine formation still remain largely unknown.
Limin Mi   +9 more
doaj   +1 more source

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