scholarly journals Role of nitrate in nitrogen nutrition of the mangrove Avicennia marina

1985 ◽  
Vol 21 ◽  
pp. 259-265 ◽  
Author(s):  
K Boto ◽  
P Saffigna ◽  
B Clough
Keyword(s):  
Nitrogen Nutrition ◽  
Avicennia Marina

Possible Role of Rhizosphere Bacteria in the Nitrogen Nutrition of Ammophila Arenaria

Nature ◽  
1964 ◽  
Vol 202 (4931) ◽  
pp. 467-469 ◽  
Author(s):  
M. G. HASSOUNA ◽  
P. F. WAREING
Keyword(s):  
Nitrogen Nutrition ◽  
Rhizosphere Bacteria ◽  
Ammophila Arenaria

Role of protein phosphatases in the regulation of nitrogen nutrition in plants

2021 ◽  
Author(s):  
Lekshmy Sathee ◽  
G. K. Krishna ◽  
Sandeep B. Adavi ◽  
Shailendra K. Jha ◽  
Vanita Jain
Keyword(s):  
Nitrogen Nutrition ◽  
Protein Phosphatases

scholarly journals Dual Role of the Oligopeptide Permease Opp3 during Growth of Staphylococcus aureus in Milk

2009 ◽  
Vol 75 (10) ◽  
pp. 3355-3357 ◽  
Author(s):  
Elise Borez�e-Durant ◽  
Aurelia Hiron ◽  
Jean-Christophe Piard ◽  
Vincent Juillard
Keyword(s):  
Staphylococcus Aureus ◽  
Amino Acid ◽  
Nitrogen Nutrition ◽  
Dual Role ◽  
Diauxic Growth ◽  
Extracellular Proteases ◽  
Expression Levels ◽  
Oligopeptide Permease

ABSTRACT Staphylococcus aureus RN6390 presents a diauxic growth in milk, due to amino acid limitation. Inactivation of the oligopeptide permease Opp3 (dedicated to the nitrogen nutrition of the strain) not only affects the growth of the strain but also results in reduced expression levels of three major extracellular proteases.

Seed development in relation to desiccation tolerance: A comparison between desiccation-sensitive (recalcitrant) seeds of Avicennia marina and desiccation-tolerant types

1993 ◽  
Vol 3 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Jill M. Farrant ◽  
N. W. Pammenter ◽  
Patricia Berjak
Keyword(s):  
Seed Development ◽  
Seedling Establishment ◽  
Soluble Sugars ◽  
Avicennia Marina ◽  
Sensu Stricto ◽  
Starch Accumulation ◽  
Recalcitrant Seeds ◽  
Recalcitrant Seed ◽  
Orthodox Seeds

AbstractDevelopment of the highly desiccation-sensitive (recalcitrant) seeds of primarily one species, Avicennia marina, is reviewed and compared with the ontogeny of desiccation-tolerant (orthodox) seeds. A. marina seeds undergo no maturation drying and remain metabolically active throughout development, which grades almost imperceptibly into germination. While PGR control of histodifferentiation is essentially similar to that characterizing desiccation-tolerant seeds, the phase of growth and reserve deposition is characterized by exceedingly high cytokinin levels which, it is proposed, promote a sink for assimilate import. While some starch accumulation does occur, the predominant reserves are soluble sugars which are readily available for the immediate onset of seedling establishment upon shedding. ABA levels are negligible in the embryo tissues during seed maturation, but increase in the pericarp, which imposes a constraint upon germination until these outer coverings are sloughed or otherwise removed. The pattern of proteins synthesized remains qualitatively similar throughout seed development in A. marina, and no LEA proteins are produced. This suggests both that seedling establishment is independent of maturation proteins and that the absence of LEAs and desiccation sensitivity might be causally related. The study on A. marina reveals that for this recalcitrant seed-type, germination per se cannot be defined: rather, it is considered as the continuation of development temporarily constrained by the pericarp ABA levels. This leads to a reexamination of the role of rehydration as key event sensu stricto, in the germination processes in desiccation-tolerant (orthodox) seeds.

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