Plant Development: PXY and Polar Cell Division in the Procambium
نویسنده
چکیده
The vascular stem-cell tissue known as procambium generates phloem cells on one side and xylem cells on the other. The Arabidopsis PXY gene encodes a leucine-rich repeat receptor-like kinase that is required for polar divisions of procambial cells.
منابع مشابه
Plant Vascular Cell Division Is Maintained by an Interaction between PXY and Ethylene Signalling
The procambium and cambium are meristematic tissues from which vascular tissue is derived. Vascular initials differentiate into phloem towards the outside of the stem and xylem towards the inside. A small peptide derived from CLV-3/ESR1-LIKE 41 (CLE41) is thought to promote cell divisions in vascular meristems by signalling through the PHLOEM INTERCALLATED WITH XYLEM (PXY) receptor kinase. pxy ...
متن کاملThe PXY-CLE41 receptor ligand pair defines a multifunctional pathway that controls the rate and orientation of vascular cell division.
Controlling the orientation of cell division is fundamental to the development of complex body plans. This is particularly apparent in plants, where development is determined by differential growth that results solely from changes in cell expansion and orientation of the cell division plane. Despite the fundamental importance of cell division orientation to plant development, the mechanisms reg...
متن کاملPlan B for Stimulating Stem Cell Division
Plant development relies on two kinds of coordinated regulatory inputs to generate an optimal plant body. First are inputs regulating the spatial organization of cells in the plant. These ‘‘hardwired’’ inputs are invariant between individuals and their actions are buffered from the environment. Second are variable inputs that modify the development of tissues to optimize growth for given condit...
متن کاملWOX4 and WOX14 act downstream of the PXY receptor kinase to regulate plant vascular proliferation independently of any role in vascular organisation
In plants, the cambium and procambium are meristems from which vascular tissue is derived. In contrast to most plant cells, stem cells within these tissues are thin and extremely long. They are particularly unusual as they divide down their long axis in a highly ordered manner, parallel to the tangential axis of the stem. CLAVATA3-LIKE/ESR-RELATED 41 (CLE41) and PHLOEM INTERCALATED WITH XYLEM (...
متن کاملPXY, a Receptor-like Kinase Essential for Maintaining Polarity during Plant Vascular-Tissue Development
All plant tissue is ultimately derived from the meristems, and the molecular mechanisms that control growth of apical meristems have been widely studied (reviewed in). In contrast, much less attention has been paid to vascular meristems, such as the cambium and procambium, even though these meristems are the source of woody tissue and therefore generate the majority of plant biomass. Although b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Current Biology
دوره 17 شماره
صفحات -
تاریخ انتشار 2007