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Cited by 265

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

F-Actin-Dependent Endocytosis of Cell Wall Pectins in Meristematic Root Cells. Insights from Brefeldin A-Induced Compartments

Open access
Baluška, František, Hlavacka, Andrej, Šamaj, Jozef, Palme, Klaus, Robinson, David G., Matoh, Toru, McCurdy, David W., Menzel, Diedrik, Volkmann, Dieter·2002·Plant Physiology
DOI 10.1104/pp.007526
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Abstract

Brefeldin A (BFA) inhibits exocytosis but allows endocytosis, making it a valuable agent to identify molecules that recycle at cell peripheries. In plants, formation of large intracellular compartments in response to BFA treatment is a unique feature of some, but not all, cells. Here, we have analyzed assembly and distribution of BFA compartments in development- and tissue-specific contexts of growing maize (Zea mays) root apices. Surprisingly, these unique compartments formed only in meristematic cells of the root body. On the other hand, BFA compartments were absent from secretory cells of root cap periphery, metaxylem cells, and most elongating cells, all of which are active in exocytosis. We report that cell wall pectin epitopes counting rhamnogalacturonan II dimers cross-linked by borate diol diester, partially esterified (up to 40%) homogalacturonan pectins, and (1→4)-β-d-galactan side chains of rhamnogalacturonan I were internalized into BFA compartments. In contrast, Golgi-derived secretory (esterified up to 80%) homogalacturonan pectins localized to the cytoplasm in control cells and did not accumulate within characteristic BFA compartments. Latrunculin B-mediated depolymerization of F-actin inhibited internalization and accumulation of cell wall pectins within intracellular BFA compartments. Importantly, cold treatment and protoplasting prevented internalization of wall pectins into root cells upon BFA treatment. These observations suggest that cell wall pectins of meristematic maize root cells undergo rapid endocytosis in an F-actin-dependent manner.

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Metadata

Authors
Baluška, F., Hlavacka, A., Šamaj, J., Palme, K., Robinson, D. G., Matoh, T., McCurdy, D. W., Menzel, D., & Volkmann, D.
Venue
Plant Physiology
Publisher
Oxford University Press (OUP)
Published
2002-09-01
Volume
130
Issue
1
Pages
422-431
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
DOI
10.1104/pp.007526
OpenAlex
W2170524248
Cited by
265
References
47
FWCI
20.45
Type
journal article
Language
en
Open access
bronze

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