Changes in the Autolytic Activities of Maize Coleoptile Cell Walls during Coleoptile Growth
スポンサーリンク
概要
- 論文の詳細を見る
Autolytic activities of coleoptile cell walls were measured in developing maize seedlings. The major neutral sugar components of the cell wall polysaccharides were arabinose, xylose and glucose. The quantities of all these components per coleoptile increased for 5 d after germination, suggesting that levels are augmented by biosynthetic processes during coleoptile growth. However, cell wall preparations isolated from the coleoptiles also revealed increasing rates of autolytic activity directed toward each of the sugar components. This result suggests that the constitutive hydrolytic activities expressed by cell walls also increase as a function of coleoptile age. The proportion of glucose in autolysis products relative to that present in the cell walls specifically increased with coleoptile age, while the ratios for arabinose and xylose decreased. Kinetic analyses of autolysis demonstrated that the reactions specific for pentoses at the early growth stage are transient events and that initial low rates of glucan autolysis increased sharply and persisted longer. In these experiments the products of glucan autolysis were largely monomeric while those of the pentose-specific reactions consisted of both monomeric and polymeric sugars. Based on these results, we concluded that two distinct phases of autolytic activities are expressed in the mediation of cell wall polysaccharide metabolism in situ.
- 日本植物生理学会の論文
著者
-
Nevins Donald
Department of Vegetable Crops, University of California
-
Nevins Donald
Department Of Vegetable Crops University Of California
-
Nevins Donald
Department Of Botany And Plant Pathology Iowa State Uiversity
-
Inouhe Masahiro
Department of Biology, Faculty of Science, Ehime University
-
Inouhe Masahiro
Department Of Biology Faculty Of Science Ehime University
-
Inouhe Masahiro
Department Of Biology And Earth Sciences Faculty Of Science Ehime University
関連論文
- キウイフルーツの細胞壁多糖類の変化とレーザードップラー法により検出した粘弾性特性について
- Auxin- and hydrogen ion-induced cell wall loosening and cell extension in Avena coleoptile segments
- Changes in the Activities and Polypeptide Levels of Exo- and Endoglucanases in Cell Walls during Developmental Growth of Zea mays Coleoptiles
- Changes in the Autolytic Activities of Maize Coleoptile Cell Walls during Coleoptile Growth
- Relationship between Fruit Softening and Wall Polysaccharides in Avocado (Persea americana Mill) Mesocarp Tissues
- Al Binding in the Epidermis Cell Wall Inhibits Cell Elongation of Okra Hypocotyl
- Different Characteristics of Roots in the Cadmium-Tolerance and Cd-Binding Complex Formation between Mono- and Dicotyledonous Plants
- Native Cadmium-Metallothionein from the Yeast Saccharomyces cerevisiae: Its Primary Structure and Function in Heavy-Metal Resistance
- Relief of Arsenate Toxicity by Cd-Stimulated Phytochelatin Synthesis in the Green Alga Chlamydomonas reinhardtii
- Auxin-Induced Changes in the Molecular Weight Distribution of Cell Wall Xyloglucans in A vena Coleoptiles
- Changes in the levels of phytochelatins and related metal-binding peptides in chickpea seedlings exposed to arsenic and different heavy metal ions
- Possible roles of phytochelatins and glutathione metabolism in cadmium tolerance in chickpea roots
- Resistance to Cadmium Ions and Formation of a Cadmium-Binding Complex in Various Wild-Type Yeasts
- Effects of monosaccharides on the neutral sugar compositions in the UDP-sugar and cell-wall polysaccharide fractions of suspension-cultured plant cells
- Growth and Stress-Relaxation Parameters for the Cell Wall of Normal and 10 Dwarf Barley Strains
- Growth Regulation in Dwarf Barley Coleoptiles by the Minor Cell Wall Components, Galactose and Mannose
- Growth Regulation of Dark-grown Dwarf Barley Coleoptile by the Endogenous IAA Content
- Impacts of fly-ash on soil and plant responses
- Effects of 2-Deoxygalactose on Auxin-Induced Growth and Levels of UDP-Sugars in Higher Plants
- Changes in the water status and osmotic solute contents in response to drought and salicylic acid treatments in four different cultivars of wheat (Triticum aestivum)