Cell division and differentiation of stem cells are controlled by non- cell-autonomous signals in higher organisms. The plant vascular meristem is a stem-cell tissue comprising procambial cells that produce xylem cell...Cell division and differentiation of stem cells are controlled by non- cell-autonomous signals in higher organisms. The plant vascular meristem is a stem-cell tissue comprising procambial cells that produce xylem cells on one side and phloem cells on the other side. Recent studies have revealed that TDIF （tracheary element differentiation inhibitory factor）/CLE41/CLE44 peptide signal controls the procambial cell fate in a non-cell-autonomous manner. TDIF produced in and secreted from phloem cells is perceived by TDR/PXY, a leucine-rich repeat receptor kinase located in the plasma membrane of procambial cells. This signal suppresses xylem cell differentiation of procambial cells and promotes their proliferation. In addition to TDIF, some other CLE peptides play roles in vascular development. Here, we summarize recent advances in CLE signaling governing vascular development.展开更多
The plant vascular system consists of two conductive tissues, phloem and xylem. The vascular meristem, namely the （pro-）cambium, is a stem- cell tissue that gives rise to both xylem and phloem. Recent studies have r...The plant vascular system consists of two conductive tissues, phloem and xylem. The vascular meristem, namely the （pro-）cambium, is a stem- cell tissue that gives rise to both xylem and phloem. Recent studies have revealed that CLAVATA3/Embryo Surrounding Region-related （CLE） pep- tides function in establishing the vascular system through interaction with phytohormones. In particular, TDIF/CLE41/CLE44, phloem-derived CLE peptides, promote the proliferation of vascular cambium cells and prevent them from differentiating into xylem by regulating WOX4 expres- sion through the TDR/PXY receptor. In this review article, we outline recent advances on how CLE peptides function in vascular developmentin concert with phytohormones through mediating cell-cell communication. The perspective of CLE peptide signaling in vascular development is also discussed.展开更多
基金supported in part by Grants-in-Aid from theMinistry of Education, Science, Sports and Culture of Japan(19060009) to HFsupported in part by Grants-in-Aid from the Japan Society for the Promotionof Science (20247003 to HF, JSPS Research Fellowships forYoung Scientists to YH)
文摘Cell division and differentiation of stem cells are controlled by non- cell-autonomous signals in higher organisms. The plant vascular meristem is a stem-cell tissue comprising procambial cells that produce xylem cells on one side and phloem cells on the other side. Recent studies have revealed that TDIF （tracheary element differentiation inhibitory factor）/CLE41/CLE44 peptide signal controls the procambial cell fate in a non-cell-autonomous manner. TDIF produced in and secreted from phloem cells is perceived by TDR/PXY, a leucine-rich repeat receptor kinase located in the plasma membrane of procambial cells. This signal suppresses xylem cell differentiation of procambial cells and promotes their proliferation. In addition to TDIF, some other CLE peptides play roles in vascular development. Here, we summarize recent advances in CLE signaling governing vascular development.
基金supported by the National Natural Science Foundation ofChina (31271575 31200902)+1 种基金the Fundamental ResearchFunds for the Central Universities (GK201103005)the Specialized Research Fund for the Doctoral Program of Higher Education from the Ministry of Education of China(20120202120009)
文摘The plant vascular system consists of two conductive tissues, phloem and xylem. The vascular meristem, namely the （pro-）cambium, is a stem- cell tissue that gives rise to both xylem and phloem. Recent studies have revealed that CLAVATA3/Embryo Surrounding Region-related （CLE） pep- tides function in establishing the vascular system through interaction with phytohormones. In particular, TDIF/CLE41/CLE44, phloem-derived CLE peptides, promote the proliferation of vascular cambium cells and prevent them from differentiating into xylem by regulating WOX4 expres- sion through the TDR/PXY receptor. In this review article, we outline recent advances on how CLE peptides function in vascular developmentin concert with phytohormones through mediating cell-cell communication. The perspective of CLE peptide signaling in vascular development is also discussed.
