Gibberellic Acid-Induced Pollen Mortality and Abnormal Microsporogenesis in Safflower
نویسندگان
چکیده
منابع مشابه
Polyamines in Pollen: From Microsporogenesis to Fertilization
The entire pollen life span is driven by polyamine (PA) homeostasis, achieved through fine regulation of their biosynthesis, oxidation, conjugation, compartmentalization, uptake, and release. The critical role of PAs, from microsporogenesis to pollen-pistil interaction during fertilization, is suggested by high and dynamic transcript levels of PA biosynthetic genes, as well as by the activities...
متن کاملEffects of Gibberellic Acid Treatment for Pollen Sterility Induction on the Physiological Activity and Endogenous Hormone Levels of the Seed in Safflower
In this research, our aim was to determine the effects of gibberellic acid, which was applied to safflower plants (Carthamus tinctorius L. cv. Dinçer 5-118) for pollen sterility induction, on some physiological activity and endogenous hormone levels of the seeds. Exogenously applied gibberellic acid (GA3) strongly influenced the endogenous hormone levels of the seeds by decreasing the levels of...
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BACKGROUND AND AIMS Microsporogenesis leading to monosulcate pollen grains has already been described for a wide range of monocot species. However, a detailed study of additional callose deposition after the completion of the cleavage walls has been neglected so far. The study of additional callose deposition in monosulcate pollen grain has gained importance since a correlation between addition...
متن کاملInteractions affecting gibberellic acid
The production of GA3 in solid-state culture was studied using systems composed of maize cob particles soaked in an amylaceous efluent, as a function of three variablesparticle diameter, volume of liquid phase, and substrate concentration-with a determinant influence on the response. The empirical model obtained provides an explanation of the behavior of the system in terms of a series of inter...
متن کاملPurification of gibberellic acid-induced lysosomes from wheat aleurone cells.
Using isopycnic density gradient centrifugation, lysosomes were concentrated in a single region of a sucrose-Ficoll gradient (p = 1-10 g cm-3), well separated from most other cell organelles. Gibberellic acid-induced lysosomes were found to be rich in alpha-amylase and protease but not ribonuclease. The lysosomal band also contained a majority of the NADH2-cytochrome c reductase, a marker enzym...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 2009
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.74.171