منابع مشابه
Xylem
What is xylem required for? The xylem has evolved as a tissue to transport water and minerals from the roots to the tips of leaves using tubes of dead tracheary elements arranged end-toend. In addition, the xylem is required for supporting the plant body vertically on land. Thick secondary cell walls on xylem cells give the cells physical strength to help support the plant body and resist water...
متن کاملXylem Structure and Function
The earliest land plants were short, herbaceous plants that evolved from primitive, water-living ancestors. For these plants, the change from a predominantly aquatic to a terrestrial environment was accompanied by the need for additional structural support to keep the plants upright and the need for more efficient transport of water to the aboveground parts of the plants. Larger plant sizes als...
متن کاملXylem: The Code of Plants
This paper describes the impetus behind and design of a quasi-casual math puzzle game with the goal of crowdsourcing formal software verification through the analysis of loop invariants. This game, Xylem: The Code of Plants, presents players with puzzles derived from data produced by loops in a particular piece of software. Solving these puzzles involves finding and expressing a loop invariant ...
متن کاملVascular Patterning: Xylem or Phloem?
Xylem and phloem are the major conduits for the transport of water and solutes through the plant. Recent work has helped to elucidate the mechanisms that determine the identity and arrangement of these two tissues.
متن کاملRegulation of xylem cell fate
The vascular system is organized throughout the plant body for transporting water, nutrients, and signaling molecules. During vascular development, xylem, phloem, and procambial/cambial cells are produced in a spatiotemporally organized manner. Several key regulators for xylem cell patterning and differentiation have been discovered, including auxin, cytokinin, CLE peptides, microRNAs, HD-ZIPII...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2014
ISSN: 0960-9822
DOI: 10.1016/j.cub.2014.10.010