Modulation of Reserve Mobilization by Sucrose, Glutamine, and Abscisic Acid During Seedling Establishment in Sunflower

2016 ◽  
Vol 36 (1) ◽  
pp. 11-21 ◽  
Author(s):  
Thiago Barros-Galvão ◽  
Danilo Flademir Alves de Oliveira ◽  
Cristiane Elizabeth Costa de Macêdo ◽  
Eduardo Luiz Voigt
Keyword(s):  
Abscisic Acid ◽  
Seedling Establishment ◽  
Reserve Mobilization

Source–sink regulation of cotyledonary reserve mobilization during cashew (Anacardium occidentale) seedling establishment under NaCl salinity

2009 ◽  
Vol 166 (1) ◽  
pp. 80-89 ◽  
Author(s):  
Eduardo Luiz Voigt ◽  
Tânia Dias Almeida ◽  
Roberta Magalhães Chagas ◽  
Luiz Ferreira Aguiar Ponte ◽  
Ricardo Almeida Viégas ◽  
...  
Keyword(s):  
Seedling Establishment ◽  
Anacardium Occidentale ◽  
Nacl Salinity ◽  
Reserve Mobilization ◽  
Source Sink

scholarly journals Reserve Mobilization in the Arabidopsis Endosperm Fuels Hypocotyl Elongation in the Dark, Is Independent of Abscisic Acid, and Requires PHOSPHOENOLPYRUVATE CARBOXYKINASE1

2004 ◽  
Vol 16 (10) ◽  
pp. 2705-2718 ◽  
Author(s):  
Steven Penfield ◽  
Elizabeth L. Rylott ◽  
Alison D. Gilday ◽  
Stuart Graham ◽  
Tony R. Larson ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Hypocotyl Elongation ◽  
Reserve Mobilization

scholarly journals Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

2020 ◽  
Vol 42 ◽  
Author(s):  
Francival Cardoso Felix ◽  
Josenilda Aprígio Dantas de Medeiros ◽  
Cibele dos Santos Ferrari ◽  
Mauro Vasconcelos Pacheco ◽  
Salvador Barros Torres
Keyword(s):  
Thermal Stress ◽  
Seed Germination ◽  
Seedling Establishment ◽  
Incubation Temperature ◽  
Northeastern Brazil ◽  
Reserve Mobilization ◽  
Social Ecological ◽  
Different Temperatures ◽  
Molecular Aspects ◽  
Germination Vigor

ABSTRACT: Erythrina velutina Willd. (Fabaceae) is a tree species that bears social, ecological, and economic importance for northeastern Brazil, a region with frequent temperature variations. The objective of this work was to evaluate the mobilization of reserves during seed germination and seedling establishment of E. velutina at different temperatures, and how these mechanisms are affected in a thermal-stress situation. The seeds germinated at 5, 15, 25, 35, and 45 °C, and the physiological and biochemical aspects of reserve mobilization (starch, lipids, and total proteins) were assessed during seedling establishment. Germination, vigor, and the mobilization of reserves from the cotyledons to the embryonic axis are affected according to the incubation temperature. The temperature of 25 °C favors the mobilization of reserves during seed germination and seedling establishment in E. velutina. In a situation of thermal stress, high temperatures affect the establishment of the seedlings, whereas low temperatures compromise the mobilization of reserves.

Endo-β-mannanase activity and reserve mobilization in excised endosperms of fenugreek is affected by volume of incubation and abscisic acid

1991 ◽  
Vol 1 (1) ◽  
pp. 45-49 ◽  
Author(s):  
L. Malek ◽  
J. D. Bewley
Keyword(s):  
Abscisic Acid ◽  
Large Volume ◽  
Cell Walls ◽  
Small Volume ◽  
Enzymic Activity ◽  
Western Blots ◽  
Fenugreek Seeds ◽  
Reserve Mobilization ◽  
Mannanase Activity

AbstractGalactomannan hydrolysis in isolated endosperms of fenugreek seeds is promoted by the presence of the embryo. Incubation in a large volume in the absence of the axis also results in endosperm mobilization and an increase in endo-β-mannanase activity. This is prevented when endosperms are incubated in a small volume, or when abscisic acid is present in the large volume. Fenugreek endosperms contain abscisic acid which is present in greater concentrations when these tissues have been incubated in a small volume rather than in a large volume. Antibodies prepared against purified tomato endo-β-mannanase detect the fenugreek enzyme on Western blots. Endosperms contain equal amounts of this enzyme whether they are incubated in a large volume, or in a small volume, or in the presence of abscisic acid. Thus, increased enzymic activity may not be related to increased synthesis, but rather to activation or release from the cells into the galactomannan-containing cell walls.

scholarly journals Advances on Post-translational Modifications Involved in Seed Germination

2021 ◽  
Vol 12 ◽  
Author(s):  
Feng Yu ◽  
Ming Li ◽  
Dongli He ◽  
Pingfang Yang
Keyword(s):  
Transcription Factors ◽  
Abscisic Acid ◽  
Seed Germination ◽  
Seedling Establishment ◽  
Decisive Role ◽  
Physiological Status ◽  
Comprehensive Understanding ◽  
Post Translational Modifications ◽  
Physiological Functions ◽  
Highly Active

Seed germination and subsequent seedling establishment are important developmental processes that undergo extremely complex changes of physiological status and are precisely regulated at transcriptional and translational levels. Phytohormones including abscisic acid (ABA) and gibberellin (GA) are the critical signaling molecules that modulate the alteration from relative quiescent to a highly active state in seeds. Transcription factors such as ABA insensitive5 (ABI5) and DELLA domain-containing proteins play the central roles in response to ABA and GA, respectively, which antagonize each other during seed germination. Recent investigations have demonstrated that the regulations at translational and post-translational levels, especially post-translational modifications (PTMs), play a decisive role in seed germination. Specifically, phosphorylation and ubiquitination were shown to be involved in regulating the function of ABI5. In this review, we summarized the latest advancement on the function of PTMs involved in the regulation of seed germination, in which the PTMs for ABI5- and DELLA-containing proteins play the key roles. Meanwhile, the studies on PTM-based proteomics during seed germination and the crosstalk of different PTMs are also discussed. Hopefully, it will facilitate in obtaining a comprehensive understanding of the physiological functions of different PTMs in seed germination.

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