Plasmodesmata Formation: Poking Holes in Walls with ise
نویسندگان
چکیده
Secondary plasmodesmata are cytoplasmic channels connecting adjacent plant cells that arise after cell division. How membrane-delimited channels penetrate cell walls is unknown, but now two genes, ISE1 and ISE2, are shown to be required for pathways that limit their formation.
منابع مشابه
Loss of INCREASED SIZE EXCLUSION LIMIT (ISE)1 or ISE2 Increases the Formation of Secondary Plasmodesmata
Plasmodesmata (PD) transport developmentally important nucleic acids and proteins between plant cells. Primary PD form during cell division and are simple, linear channels. Secondary PD form in existing cell walls after cell division and are simple, twinned, or branched. PD function undergoes a marked reduction at the mid-torpedo stage of Arabidopsis embryogenesis. Two mutants, increased size e...
متن کاملPlasmodesmata
What are plasmodesmata? The word plasmodesma derives from the Latin ‘plasmo’ meaning fluid and the Greek ‘desma’ meaning bond. The origin of the word exactly exposes the function of plasmodesmata. Plant cells are encased in cell walls that form the plant skeleton, enabling and stabilizing three-dimensional growth. Just think what would celery be without plant cells walls? However, the presence ...
متن کاملIdentification of a developmental transition in plasmodesmatal function during embryogenesis in Arabidopsis thaliana.
Plasmodesmata provide routes for communication and nutrient transfer between plant cells by interconnecting the cytoplasm of adjacent cells. A simple fluorescent tracer loading assay was developed to monitor patterns of cell-to-cell transport via plasmodesmata specifically during embryogenesis. A developmental transition in plasmodesmatal size exclusion limit was found to occur at the torpedo s...
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Using a polyclonal antibody raised against calreticulin purified and sequenced from maize, we performed an immunocytological study to characterize putative domain-specific subcellular distributions of endoplasmic reticulum (ER)-resident calreticulin in meristematic cells of maize root tip. At the light microscopy level, calreticulin was immunolocalized preferentially at cellular peripheries, in...
متن کاملClass 1 reversibly glycosylated polypeptides are plasmodesmal-associated proteins delivered to plasmodesmata via the golgi apparatus.
SE-WAP41, a salt-extractable 41-kD wall-associated protein that is associated with walls of etiolated maize (Zea mays) seedlings and is recognized by an antiserum previously reported to label plasmodesmata and the Golgi, was cloned, sequenced, and found to be a class 1 reversibly glycosylated polypeptide ((C1)RGP). Protein gel blot analysis of cell fractions with an antiserum against recombinan...
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ورودعنوان ژورنال:
- Current Biology
دوره 20 شماره
صفحات -
تاریخ انتشار 2010