scholarly journals Antisense-inhibition of ADP-glucose pyrophosphorylase in developing seeds of Vicia narbonensis moderately decreases starch but increases protein content and affects seed maturation

2000 ◽  
Vol 24 (1) ◽  
pp. 33-43 ◽  
Author(s):  
Hans Weber ◽  
Hardy Rolletschek ◽  
Ute Heim ◽  
Sabine Golombek ◽  
Sabine Gubatz ◽  
...  
Keyword(s):  
Protein Content ◽  
Seed Maturation ◽  
Antisense Inhibition ◽  
Developing Seeds ◽  
Vicia Narbonensis ◽  
Adp Glucose Pyrophosphorylase

Changes of Antioxidant Enzyme and Phenylalanine Ammonia-Lyase Activities during Chimonanthus praecox Seed Maturation

2008 ◽  
Vol 63 (7-8) ◽  
pp. 569-573 ◽  
Author(s):  
Xiaojia He ◽  
Shun Gao
Keyword(s):  
Superoxide Dismutase ◽  
Protein Content ◽  
Antioxidant Enzyme ◽  
Gel Electrophoresis ◽  
Growth And Development ◽  
Phenylalanine Ammonia Lyase ◽  
Polyacrylamide Gel Electrophoresis ◽  
Seed Maturation ◽  
Pal Activity ◽  
Chimonanthus Praecox

Changes in peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) and phenylalanine ammonia-lyase (PAL) activities were studied during Chimonanthus praecox seed maturation. According to our findings the protein content increased steadily from 8 to 12 weeks after flowering, and thereafter decreased significantly. Similarly, SOD and POD activities increased gradually up to 12 weeks after flowering and then declined. PAL activity declined gradually during seed maturation. CAT activity, however, showed no changes during seed maturation. By means of polyacrylamide gel electrophoresis (PAGE), SOD and POD isoenzymes were observed during seed maturation. The staining intensities of SOD and POD isoenzymes correlated well with SOD and POD activities as obtained by an assay in solution. These findings suggest that POD, SOD and PAL may be involved in the growth and development during Chimonanthus praecox seed maturation.

Cryptic seed abortion and the estimation of ovule fertilization

1987 ◽  
Vol 65 (11) ◽  
pp. 2463-2465 ◽  
Author(s):  
Robert R. Nakamura ◽  
Maureen L. Stanton
Keyword(s):  
Natural Population ◽  
Raphanus Sativus ◽  
Early Time ◽  
Plant Reproduction ◽  
Seed Maturation ◽  
Seed Abortion ◽  
Ecological Studies ◽  
Developing Seeds ◽  
Raphanus Sativus L

In a natural population of Raphanus sativus L. 41% of all fertilized ovules aborted before seed maturation. However, in mature fruits over 75% of the abortion was undetected. The cryptic abortion of developing seeds was likely due to the early time of abortion and the corky nature of the pericarp. The results are important for the accurate measurement of ovule fertilization and seed abortion in ecological studies of plant reproduction.

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