Biological implications of the occurrence of 32 members of the XTH (xyloglucan endotransglucosylase/hydrolase) family of proteins in the bryophyte Physcomitrella patens

Ryusuke Yokoyama, Yohei Uwagaki, Hiroki Sasaki, Taro Harada, Yuji Hiwatashi, Mitsuyasu Hasebe, Kazuhiko Nishitani

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

This comprehensive overview of the xyloglucan endotransglucosylase/ hydrolase (XTH) family of genes and proteins in bryophytes, based on research using genomic resources that are newly available for the moss Physcomitrella patens, provides new insights into plant evolution. In angiosperms, the XTH genes are found in large multi-gene families, probably reflecting the diverse roles of individual XTHs in various cell types. As there are fewer cell types in P.patens than in angiosperms such as Arabidopsis and rice, it is tempting to deduce that there are fewer XTH family genes in bryophytes. However, the present study unexpectedly identified as many as 32 genes that potentially encode XTH family proteins in the genome of P.patens, constituting a fairly large multi-gene family that is comparable in size with those of Arabidopsis and rice. In situ localization of xyloglucan endotransglucosylase activity in this moss indicates that some P.patens XTH proteins exhibit biochemical functions similar to those found in angiosperms, and that their expression profiles are tissue-dependent. However, comparison of structural features of families of XTH genes between P.patens and angiosperms demonstrated the existence of several bryophyte-specific XTH genes with distinct structural and functional features that are not found in angiosperms. These bryophyte-specific XTH genes might have evolved to meet morphological and functional needs specific to the bryophyte. These findings raise interesting questions about the biological implications of the XTH family of proteins in non-seed plants.

Original languageEnglish
Pages (from-to)645-656
Number of pages12
JournalPlant Journal
Volume64
Issue number4
DOIs
Publication statusPublished - Nov 2010
Externally publishedYes

Fingerprint

xyloglucan - xyloglucosyltransferase
Bryopsida
xyloglucan:xyloglucosyl transferase
Bryophyta
Physcomitrella patens
hydrolases
Angiosperms
Angiospermae
Proteins
proteins
Genes
genes
multigene family
Arabidopsis
mosses and liverworts
rice

Keywords

  • bryophyte
  • cell wall
  • gene family
  • Physcomitrella patens
  • xyloglucan endotransglucosylase/hydrolase

ASJC Scopus subject areas

  • Plant Science
  • Cell Biology
  • Genetics

Cite this

Biological implications of the occurrence of 32 members of the XTH (xyloglucan endotransglucosylase/hydrolase) family of proteins in the bryophyte Physcomitrella patens. / Yokoyama, Ryusuke; Uwagaki, Yohei; Sasaki, Hiroki; Harada, Taro; Hiwatashi, Yuji; Hasebe, Mitsuyasu; Nishitani, Kazuhiko.

In: Plant Journal, Vol. 64, No. 4, 11.2010, p. 645-656.

Research output: Contribution to journalArticle

Yokoyama, Ryusuke ; Uwagaki, Yohei ; Sasaki, Hiroki ; Harada, Taro ; Hiwatashi, Yuji ; Hasebe, Mitsuyasu ; Nishitani, Kazuhiko. / Biological implications of the occurrence of 32 members of the XTH (xyloglucan endotransglucosylase/hydrolase) family of proteins in the bryophyte Physcomitrella patens. In: Plant Journal. 2010 ; Vol. 64, No. 4. pp. 645-656.
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