Cell fusion and nuclear fusion in plants

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• 作者：Daisuke Maruyama^a ; ^{dmaru@yokohama-cu.ac.jp} ; Mina Ohtsu^b ; Tetsuya Higashiyama^b ; ^c ; ^d
• 关键词：ER ; endoplasmic reticulum ; GEX ; GAMETE EXPRESSED ; GCS1 ; GENERATIVE CELL SPECIFIC 1 ; HAP2 ; HAPLESS 2 ; EC1 ; EGG CELL 1 ; MSI1 ; MULTICOPY SUPRESSOR OF IRA1 ; EDA ; EMBRYO SAC DEVELOPMENT ARREST ; MEE ; MATERNAL EFFECT EMBRYO ARREST ; NFD ; NUCLEAR FUSION DEFECTIVE ; GFA ; GAMETOPHYTIC FACTOR ; CDKA ; 1 ; CYCLIN DEPENDENT KINASE A1 ; HSP ; heat shock protein ; BiP ; luminal binding protein ; GFP ; green fluorescent protein ; YFP ; yellow fluorescent protein ; SE ; fusion synergid-endosperm fusion
• 刊名：Seminars in Cell & Developmental Biology
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：60
• 期：Complete
• 页码：127-135
• 全文大小：1077 K
• 卷排序：60

文摘

Eukaryotic cells are surrounded by a plasma membrane and have a large nucleus containing the genomic DNA, which is enclosed by a nuclear envelope consisting of the outer and inner nuclear membranes. Although these membranes maintain the identity of cells, they sometimes fuse to each other, such as to produce a zygote during sexual reproduction or to give rise to other characteristically polyploid tissues. Recent studies have demonstrated that the mechanisms of plasma membrane or nuclear membrane fusion in plants are shared to some extent with those of yeasts and animals, despite the unique features of plant cells including thick cell walls and intercellular connections. Here, we summarize the key factors in the fusion of these membranes during plant reproduction, and also focus on “non-gametic cell fusion,” which was thought to be rare in plant tissue, in which each cell is separated by a cell wall.