Localization and responsiveness of a cowpea apyrase VsNTPase1 to phytopathogenic microorganisms

Hirotaka Takahashi, Kazuhiro Toyoda, Yuzo Hirakawa, Kunihiko Morishita, Toshiaki Kato, Yoshishige Inagaki, Yuki Ichinose, Tomonori Shiraishi


10 被引用数 (Scopus)


Apyrases (NTPases) are associated with both compatible and incompatible interactions between plants and microorganisms. Previously we reported that the ATPase activities of cell-wall-bound apyrases of several leguminous plants, such as pea, cowpea, soybean, and kidney bean, were enhanced by a glycoprotein elicitor and were inhibited in a species-specific manner by mucin-type glycopeptide suppressors secreted from a pea pathogenic fungus, Mycosphaerella pinodes. In this study, we isolated two apyrase genes, VsNTPase1 and VsNTPase2, from a cDNA library of Vigna sinensis Endl. cv. Sanjakusasage. Based on phylogenetic analysis, VsNTPase1 may belong to a group that responds to environmental stimuli. In a transient assay using DNA bombardment, a fusion protein of green fluorescent protein (GFP) and the N-terminal putative signal sequence of VsNTPase1 was distributed in the nucleus, cytoplasm (cytoskeletal structure), and cell wall. On the other hand, a fusion protein of GFP and the N-terminal putative VsNTPase2-signal sequence was localized in the cytoplasm, especially in small particles (perhaps mitochondria). A recombinant VsNTPase1 expressed in Spodoptera frugiperda 21 cells responded directly to signal molecules from several phytopathogenic microorganisms. Here, we discuss the role of apyrases in recognizing and responding to exogenous signals.

ジャーナルJournal of General Plant Pathology
出版ステータスPublished - 6月 2006

ASJC Scopus subject areas

  • 農業および作物学
  • 植物科学


「Localization and responsiveness of a cowpea apyrase VsNTPase1 to phytopathogenic microorganisms」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。