Gibberellin Acts through Jasmonate to Control the Expression of MYB21, MYB24, and MYB57 to Promote Stamen Filament Growth in Arabidopsis

2011 ◽  
pp. 169-196
Keyword(s):  
Stamen Filament

scholarly journals Class-I TCP Transcription Factors Activate the SAUR63 Gene Subfamily in Gibberellin-Dependent Stamen Filament Elongation

2020 ◽  
Vol 182 (4) ◽  
pp. 2096-2110 ◽  
Author(s):  
Victoria Gastaldi ◽  
Leandro E. Lucero ◽  
Lucía V. Ferrero ◽  
Federico D. Ariel ◽  
Daniel H. Gonzalez
Keyword(s):  
Transcription Factors ◽  
Class I ◽  
Stamen Filament ◽  
Gene Subfamily

STAMEN FILAMENT STRUCTURE IN THE ASTERACEAE: THE ANTHER COLLAR

1986 ◽  
Vol 104 (4) ◽  
pp. 693-701 ◽  
Author(s):  
L. MEIRI ◽  
R. DULBERGER
Keyword(s):  
Filament Structure ◽  
Stamen Filament

Arabidopsis SMALL AUXIN UP RNA63 promotes hypocotyl and stamen filament elongation

2012 ◽  
Vol 71 (4) ◽  
pp. 684-697 ◽  
Author(s):  
Keun Chae ◽  
Cameron G. Isaacs ◽  
Paul H. Reeves ◽  
Gregory S. Maloney ◽  
Gloria K. Muday ◽  
...  
Keyword(s):  
Stamen Filament

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.

scholarly journals Gibberellin Acts through Jasmonate to Control the Expression of MYB21, MYB24, and MYB57 to Promote Stamen Filament Growth in Arabidopsis

PLoS Genetics ◽  
2009 ◽  
Vol 5 (3) ◽  
pp. e1000440 ◽  
Author(s):  
Hui Cheng ◽  
Susheng Song ◽  
Langtao Xiao ◽  
Hui Meng Soo ◽  
Zhiwei Cheng ◽  
...  
Keyword(s):  
Stamen Filament

scholarly journals Mutation in Arabidopsis MOR1 Gene Impairs Endocytosis in Stamen Filament Cells and Results in Anther Indehiscence

2021 ◽  
Author(s):  
Xiaolei Liu ◽  
Xiaoyun Tan
Keyword(s):  
Male Fertility ◽  
Cortical Microtubule ◽  
Growth Conditions ◽  
Pollen Grain ◽  
Anther Dehiscence ◽  
Microtubule Organization ◽  
Transmission Electron ◽  
Lower Temperature ◽  
Water Nutrients ◽  
Stamen Filament

Abstract Anther dehiscence is a crucial step for pollen grain release and male fertility. Filaments, which transport water, nutrients and hormones to the anthers, are important for anther dehiscence. In this study, we characterized the Arabidopsis microtubule organization 1 (MOR1) gene that involves in the filament functions and plays important roles in anther dehiscence. The Arabidopsis microtubule organization 1-1 (mor1-1) mutant exhibited an anther indehiscence phenotype at 24°C. Such the defect in anther dehiscence did not occur at a lower temperature (19°C). Further analysis indicated that both the cortical microtubule (CMT) organization and plasma membrane homeostasis were drastically impaired and disturbed in mor1-1 filament cells under the growth conditions of 24°C. Transmission electron microscopy (TEM) and FM4-64 up-take assays showed that endocytosis process in the mor1-1 filament cells were disrupted at 24°C. Furthermore, the cortical-associated RFP tagged clathrin light chain (CLC-RFP) foci were reduced in the mor1-1 filament cells. These results suggested that the MOR1-mediated CMT organization is important for clathrin-mediated endocytosis in the filament cells, and critical for anther dehiscence in thermosensitivity.

scholarly journals Developmental and molecular characterization of novel staminodes in Aquilegia

2020 ◽  
Vol 126 (2) ◽  
pp. 231-243 ◽  
Author(s):  
Clara Meaders ◽  
Ya Min ◽  
Katherine J Freedberg ◽  
Elena Kramer
Keyword(s):  
Developmental Stages ◽  
Floral Organ ◽  
Physical Interaction ◽  
Developmental Study ◽  
The Novel ◽  
Histological Techniques ◽  
Organ Identity ◽  
Molecular Divergence ◽  
Stamen Filament

Abstract Background and Aims The ranunculid model system Aquilegia is notable for the presence of a fifth type of floral organ, the staminode, which appears to be the result of sterilization and modification of the two innermost whorls of stamens. Previous studies have found that the genetic basis for the identity of this new organ is the result of sub- and neofunctionalization of floral organ identity gene paralogues; however, we do not know the extent of developmental and molecular divergence between stamens and staminodes. Methods We used histological techniques to describe the development of the Aquilegia coerulea ‘Origami’ staminode relative to the stamen filament. These results have been compared with four other Aquilegia species and the closely related genera Urophysa and Semiaquilegia. As a complement, RNA sequencing has been conducted at two developmental stages to investigate the molecular divergence of the stamen filaments and staminodes in A. coerulea ‘Origami’. Key Results Our developmental study has revealed novel features of staminode development, most notably a physical interaction along the lateral margin of adjacent organs that appears to mediate their adhesion. In addition, patterns of abaxial/adaxial differentiation are observed in staminodes but not stamen filaments, including asymmetric lignification of the adaxial epidermis in the staminodes. The comparative transcriptomics are consistent with the observed lignification of staminodes and indicate that stamen filaments are radialized due to overexpression of adaxial identity, while the staminodes are expanded due to the balanced presence of abaxial identity. Conclusions These findings suggest a model in which the novel staminode identity programme interacts with the abaxial/adaxial identity pathways to produce two whorls of laterally expanded organs that are highly differentiated along their abaxial/adaxial axis. While the ecological function of Aquilegia staminodes remains to be determined, these data are consistent with a role in protecting the early carpels from herbivory and/or pathogens.

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