Protein Synthesis in Seeds The Plant Seed: Development, Preservation, and Germination Irwin Rubenstein Ronald L. Phillips Charles E. Green B. G. Gengenbach

BioScience ◽  
1981 ◽  
Vol 31 (1) ◽  
pp. 76-76
Author(s):  
G. R. Chandra
2014 ◽  
Vol 53 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Adam Woźny ◽  
Fortunat Młodzianowski ◽  
Barbara Stefaniak

The ultrastructure of cotyledon cells is described at five stages of lupin seed development, distinguished on the basis of their morphological features. It was found that the endoplasmic reticulum nad dictyosomes participate in the synthesis and transport of storage protein, and that protein is deposited in the central vacuole or in newly forming ones. In the investigated zone of lupin cotyledon cells two forms of protein bodies were observed differing in the contrast and compactness. Both were the simple protein, bodies. Parallelly to storage protein synthesis, thickening of the cell walls was observed which may indicate synthesis and deposition of hemicellulose in them. Storage lipids surrounding the protein bodies form in the end stages of seed development.


2010 ◽  
Vol 38 (2) ◽  
pp. 604-612 ◽  
Author(s):  
Moritz K. Nowack ◽  
Alexander Ungru ◽  
Katrine N. Bjerkan ◽  
Paul E. Grini ◽  
Arp Schnittger

Flowering plants have evolved to be a predominant life form on earth. A common principle of flowering plants and probably one of the main reasons for their evolutionary success is the rapid development of an embryo next to a supporting tissue called the endosperm. The embryo and the endosperm are protected by surrounding maternal tissues, the integuments, and the trinity of integuments, embryo and endosperm comprise the plant seed. For proper seed development, these three structures have to develop in a highly controlled and co-ordinated manner, representing a paradigm for cell–cell communication during development. Communication pathways between the endosperm and the seed coat are now beginning to be unravelled. Moreover, recently isolated mutants affecting plant reproduction have allowed a genetic dissection of seed development, and revealed that the embryo plays a previously unrecognized yet important role in co-ordinating seed development.


2001 ◽  
Vol 155 (6) ◽  
pp. 991-1002 ◽  
Author(s):  
Liwen Jiang ◽  
Thomas E. Phillips ◽  
Christopher A. Hamm ◽  
Yolanda M. Drozdowicz ◽  
Philip A. Rea ◽  
...  

Storage proteins are deposited into protein storage vacuoles (PSVs) during plant seed development and maturation and stably accumulate to high levels; subsequently, during germination the storage proteins are rapidly degraded to provide nutrients for use by the embryo. Here, we show that a PSV has within it a membrane-bound compartment containing crystals of phytic acid and proteins that are characteristic of a lytic vacuole. This compound organization, a vacuole within a vacuole whereby storage functions are separated from lytic functions, has not been described previously for organelles within the secretory pathway of eukaryotic cells. The partitioning of storage and lytic functions within the same vacuole may reflect the need to keep the functions separate during seed development and maturation and yet provide a ready source of digestive enzymes to initiate degradative processes early in germination.


Weed Science ◽  
1969 ◽  
Vol 17 (1) ◽  
pp. 91-93 ◽  
Author(s):  
James M. Chandler ◽  
P. W. Santelmann

Texas panicum (Panicum texanum Buckl.) seed were collected and treatments applied in an effort to increase germination. Also, plants were grown in the field and growth characteristics studied. Poor seed germination was obtained with all treatments, but wide variation in storage temperature produced the best germination. Seedlings emerged from seed planted as deep as 3 inches. An average of 118 heads per plant and 195 seed per head were produced, or 23,010 seeds per plant. Plant, seed head, and seed development followed sigmoid growth patterns. The species was resistant to most preplant and preemergence herbicides used in screening experiments.


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