Biology of callose (β-1,3-glucan) turnover at plasmodesmata

Raul Zavaliev, Shoko Ueki, Bernard L. Epel, Vitaly Citovsky

研究成果査読

222 被引用数 (Scopus)

抄録

The turnover of callose (β-1,3-glucan) within cell walls is an essential process affecting many developmental, physiological and stress related processes in plants. The deposition and degradation of callose at the neck region of plasmodesmata (Pd) is one of the cellular control mechanisms regulating Pd permeability during both abiotic and biotic stresses. Callose accumulation at Pd is controlled by callose synthases (CalS; EC 2.4.1.34), endogenous enzymes mediating callose synthesis, and by β-1,3-glucanases (BG; EC 3.2.1.39), hydrolytic enzymes which specifically degrade callose. Transcriptional and posttranslational regulation of some CalSs and BGs are strongly controlled by stress signaling, such as that resulting from pathogen invasion. We review the role of Pd-associated callose in the regulation of intercellular communication during developmental, physiological, and stress response processes. Special emphasis is placed on the involvement of Pd-callose in viral pathogenicity. Callose accumulation at Pd restricts virus movement in both compatible and incompatible interactions, while its degradation promotes pathogen spread. Hence, studies on mechanisms of callose turnover at Pd during viral cell-to-cell spread are of importance for our understanding of host mechanisms exploited by viruses in order to successfully spread within the infected plant.

本文言語English
ページ(範囲)117-130
ページ数14
ジャーナルProtoplasma
248
1
DOI
出版ステータスPublished - 1月 2011
外部発表はい

ASJC Scopus subject areas

  • 植物科学
  • 細胞生物学

フィンガープリント

「Biology of callose (β-1,3-glucan) turnover at plasmodesmata」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル