Dynamic function and regulation of apoplast in the plant body

Apoplast is the internal environment of plant. Our body posses the internal environment that consists of blood, lympha, and tissue fluid. Plant cells are also cultivated and surrounded by a liquid medium in the apoplast. As well as various important functions of the internal environment in our body,...

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Bibliographic Details
Published inJournal of Plant Research Vol. 111; no. 1101; pp. 133 - 148
Main Author Sakurai, N. (Hiroshima Univ. (Japan). Faculty of Integrated Arts and Sciences)
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Botanical Society of Japan 01.03.1998
Springer Nature B.V
Subjects
CELL MEMBRANES
CELL WALLS
Cellular biology
Cellulose
Desiccation
Environmental factors
Enzymes
FONCTION PHYSIOLOGIQUE
FUNCION FISIOLOGICA
Gas exchange
Hormones
MEMBRANAS CELULARES
MEMBRANE CELLULAIRE
PARED CELULAR
PAROI CELLULAIRE
Photosynthesis
PHYSIOLOGICAL FUNCTIONS
PHYSIOLOGICAL REGULATION
Plant biology
Plant pathology
PLANTAS
PLANTE
PLANTS
REGULACION FISIOLOGICA
REGULATION PHYSIOLOGIQUE
Saccharides
Sulfur
Sulfur dioxide
Water content
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Summary:Apoplast is the internal environment of plant. Our body posses the internal environment that consists of blood, lympha, and tissue fluid. Plant cells are also cultivated and surrounded by a liquid medium in the apoplast. As well as various important functions of the internal environment in our body, apoplast function is also prerequisite for the plant life. There are so far seven distinct functions of apoplast. (1) Growth regulation with apoplastic enzymes by altering cell-wall properties through degradation, synthesis, orientation and cross-linking of supra-molecules of cell walls, such as cellulose, non-cellulosic polysaccharides, proteins, and lignin; (2) Skeleton sustained by cellulose microfibrils, lignin and various types of structural proteins with distinctively high content of hydroxyproline, proline or glycine; (3) Skin to defend symplast from desiccation, pathogens' attack and harmful environmental factors, such as ozone and sulfur dioxide; (4) Transportation route for not only well-known molecules of water, inorganic ions, and sugar, but also plant hormones, oligosaccharides and proteins; (5) Homeostasis of the internal environment by controlling ionic balance, pH and water content; (6) Adhesion of cell to cell; (7) Gas exchange space of leaf for photosynthesis. The present article reviews the recent advances in studies of several aspects of the dynamic function and regulation of apoplast.
Bibliography:F60
1998005563
ISSN:0918-9440
1618-0860
DOI:10.1007/bf02507160