期刊
PLANT SIGNALING & BEHAVIOR
卷 8, 期 2, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.23143
关键词
(1,3; 1,4)-beta-(D)-glucan; grass cell walls; secondary cell wall; hemicelluloses; mixed linkage glucan antibody
资金
- Office of Science, Office of Biological and Environmental Research, of the U.S. Department of Energy [DE-AC02-05CH11231]
(1,3; 1,4)-beta-(D)-glucan, also known as mixed linkage glucan (MLG), is a polysaccharide that in flowering plants is unique to the cell walls of grasses and other related members of Poales. MLG is highly abundant in endosperm cell walls, where it is considered a storage carbohydrate. In vegetative tissues, MLG transiently accumulates in the primary cell walls of young, elongating organs. In evolutionary distant species such as Equisetum, MLG accumulates predominantly in old tissues in the stems. Similarly, we have recently shown that rice accumulates a large amount of MLG in mature stems, which prompted us to re-evaluate the hypothesis that MLG is solely related to growth in grass vegetative tissues. Here, we summarize data that confirms the presence of MLG in secondary cell walls and mature tissues in rice and other grasses. Along with these results, we discuss additional evidence indicating a broader role for MLG than previously considered.
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