scholarly journals Arabinogalactan Proteins in Arabidopsis thaliana Pollen Development

10.5772/30833 ◽  
2012 ◽  
Author(s):  
Slvia Coimbra ◽  
Lus Gustavo
Keyword(s):  
Arabidopsis Thaliana ◽  
Pollen Development ◽  
Arabinogalactan Proteins

TETRASPORE is required for male meiotic cytokinesis in Arabidopsis thaliana

Development ◽  
1997 ◽  
Vol 124 (13) ◽  
pp. 2645-2657 ◽  
Author(s):  
M. Spielman ◽  
D. Preuss ◽  
F.L. Li ◽  
W.E. Browne ◽  
R.J. Scott ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pollen Development ◽  
Male Meiosis ◽  
Pollen Grain ◽  
Flowering Plants ◽  
External Wall ◽  
Normal Pollen ◽  
Wide Range ◽  
Asymmetric Divisions ◽  
And Function

In flowering plants, male meiosis occurs in the microsporocyte to produce four microspores, each of which develops into a pollen grain. Here we describe four mutant alleles of TETRASPORE (TES), a gene essential for microsporocyte cytokinesis in Arabidopsis thaliana. Following failure of male meiotic cytokinesis in tes mutants, all four microspore nuclei remain within the same cytoplasm, with some completing their developmental programmes to form functional pollen nuclei. Both of the mitotic divisions seen in normal pollen development take place in tes mutants, including the asymmetric division required for the differentiation of gametes; some tes grains perform multiple asymmetric divisions in the same cytoplasm. tes pollen shows a variety of abnormalities subsequent to the cytokinetic defect, including fusion of nuclei, formation of ectopic internal walls, and disruptions to external wall patterning. In addition, ovules fertilized by tes pollen often abort, possibly because of excess paternal genomes in the endosperm. Thus tes mutants not only reveal a gene specific to male meiosis, but aid investigation of a wide range of processes in pollen development and function.

scholarly journals The Arabidopsis thaliana F-Box Protein FBL17 Is Essential for Progression through the Second Mitosis during Pollen Development

PLoS ONE ◽  
2009 ◽  
Vol 4 (3) ◽  
pp. e4780 ◽  
Author(s):  
Andi Gusti ◽  
Nicolas Baumberger ◽  
Moritz Nowack ◽  
Stefan Pusch ◽  
Herfried Eisler ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pollen Development ◽  
F Box Protein

scholarly journals βVPE is involved in tapetal degradation and pollen development by activating proprotease maturation in Arabidopsis thaliana

2019 ◽  
Vol 71 (6) ◽  
pp. 1943-1955 ◽  
Author(s):  
Ziyi Cheng ◽  
Xiaorui Guo ◽  
Jiaxue Zhang ◽  
Yadi Liu ◽  
Bing Wang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pollen Development ◽  
Tapetal Cell ◽  
Cysteine Proteases ◽  
Anther Development ◽  
Mature Protein ◽  
Processing Enzyme ◽  
Mature Enzyme ◽  
Mature Protease

Abstract Vacuolar processing enzyme (VPE) is responsible for the maturation and activation of vacuolar proteins in plants. We found that βVPE was involved in tapetal degradation and pollen development by transforming proproteases into mature protease in Arabidopsis thaliana. βVPE was expressed specifically in the tapetum from stages 5 to 8 of anther development. The βVPE protein first appeared as a proenzyme and was transformed into the mature enzyme before stages 7–8. The recombinant βVPE protein self-cleaved and transformed into a 27 kDa mature protein at pH 5.2. The mature βVPE protein could induce the maturation of CEP1 in vitro. βvpe mutants exhibited delayed vacuolar degradation and decreased pollen fertility. The maturation of CEP1, RD19A, and RD19C was seriously inhibited in βvpe mutants. Our results indicate that βVPE is a crucial processing enzyme that directly participates in the maturation of cysteine proteases before vacuolar degradation, and is indirectly involved in pollen development and tapetal cell degradation.

scholarly journals AtMYB32 is required for normal pollen development in Arabidopsis thaliana

2004 ◽  
Vol 40 (6) ◽  
pp. 979-995 ◽  
Author(s):  
Jeremy Preston ◽  
Janet Wheeler ◽  
Joshua Heazlewood ◽  
Song Feng Li ◽  
Roger W. Parish
Keyword(s):  
Arabidopsis Thaliana ◽  
Pollen Development ◽  
Normal Pollen

Aspterric Acid and 6-Hydroxymellein, Inhibitors of Pollen Development in Arabidopsis thaliana, Produced by Aspergillus terreus

2002 ◽  
Vol 57 (5-6) ◽  
pp. 459-464 ◽  
Author(s):  
Atsumi Shimada ◽  
Miyako Kusano ◽  
Sumiyo Takeuchi ◽  
Shozo Fujioka ◽  
Tomohisa Inokuchi ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Microscopic Examination ◽  
Pollen Development ◽  
Aspergillus Terreus ◽  
Higher Plants ◽  
Molecular Investigation ◽  
Microspore Stage ◽  
Stage 1

Aspterric acid (1) and 6-hydroxymellein (2), inhibitors of pollen development in Arabidopsis thaliana, have been isolated fromthe fungus Aspergillus terreus. 1 and 2 inhibited the pollen development at concentrations of 38 and 52 μᴍ, respectively. The microscopic examination of pollen development suggested that the inhibition by the treatment with 1 caused at meiosis and the inhibition by the treatment with 2 caused at microspore stage. 1 and 2 could be useful agents for the molecular investigation of anther and pollen development in higher plants.

scholarly journals An Arabidopsis thaliana Plasma Membrane Proton Pump Is Essential for Pollen Development

Genetics ◽  
2004 ◽  
Vol 168 (3) ◽  
pp. 1677-1687 ◽  
Author(s):  
Whitney R. Robertson ◽  
Katherine Clark ◽  
Jeffery C. Young ◽  
Michael R. Sussman
Keyword(s):  
Arabidopsis Thaliana ◽  
Plasma Membrane ◽  
Proton Pump ◽  
Pollen Development ◽  
Plasma Membrane Proton Pump

Microspore and pollen development in six male-sterile mutants of Arabidopsis thaliana

1993 ◽  
Vol 71 (4) ◽  
pp. 629-638 ◽  
Author(s):  
J. Dawson ◽  
Z. A. Wilson ◽  
M. G. M. Aarts ◽  
A. F. Braithwaite ◽  
L. G. Briarty ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Key Words ◽  
Late Stage ◽  
Pollen Development ◽  
Ethyl Methanesulfonate ◽  
X Rays ◽  
Anther Dehiscence ◽  
Wild Type ◽  
Male Sterile ◽  
Stamen Filament

Five new recessive male-sterile mutants of Arabidopsis thaliana were isolated following seed mutagenesis by X-rays and ethyl methanesulfonate. The cytology of plants homozygous for the msY and msW mutations suggested that pollen development in these lines became abnormal at or before meiosis. The msK mutation caused faulty timing of synthesis or turnover and distribution of callose. In plants homozygous for the msZ mutation, pollen development failed at a late stage. In wild-type plants, the stamen filament elongated just prior to anther dehiscence. In contrast, in the msZ mutant stamen elongation did not occur. Pollen in msH homozygotes was fertile, but anthers failed to dehisce. The msI mutant of J.H. Van der Ween and P. Wirtz (1968. Euphytica 17: 371 – 377) was included in the present study. Pollen development in this mutant failed shortly after microspore release from tetrads. Complementation tests confirmed that the ms mutations were at different loci. Reduced transmission of certain ms genes was observed. Key words: Arabidopsis thaliana, male sterile mutants, anther dehiscence, callose, inheritance.

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