Longitudinal strand of vascular tissue in the roots, stems and leaves of higher plants
You can help expand this article with text translated from the corresponding article in French. (February 2019) Click [show] for important translation instructions.
View a machine-translated version of the French article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Consider adding a topic to this template: there are already 1,484 articles in the main category, and specifying|topic= will aid in categorization.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at [[:fr:Faisceau cribro-vasculaire]]; see its history for attribution.
You may also add the template {{Translated|fr|Faisceau cribro-vasculaire}} to the talk page.
For more guidance, see Wikipedia:Translation.
Types of Vascular bundles (black: Xylem, green: Phloem, white: Cambium) A concentric, periphloematic B concentric, perixylematic C radial with inner xylem, here with four xylem-poles, left closed, right open D collateral closed E collateral open F bicollateral openCross section of celery stalk, showing vascular bundles, which include both phloem and xylemDetail of vascular bundle: closed, collateral vascular bundles of the stem axis of Zea maysVascular bundle in the leaf of Metasequoia glyptostroboidesThe vascular bundle of pine leaf showing xylem and phloem
A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. In addition, there is also a tissue between xylem and phloem which is the cambium.
The xylem typically lies towards the axis (adaxial) with phloem positioned away from the axis (abaxial). In a stem or root this means that the xylem is closer to the centre of the stem or root while the phloem is closer to the exterior. In a leaf, the adaxial surface of the leaf will usually be the upper side, with the abaxial surface the lower side.
The sugars synthesized by the plant with sun light are transported by the phloem, which is closer to the lower surface. Aphids and leaf hoppers feed off of these sugars by tapping into the phloem. This is why aphids and leaf hoppers are typically found on the underside of a leaf rather than on the top.
The position of vascular bundles relative to each other may vary considerably: see stele.
Cross section of a leaf showing parts of a vascular bundle
A vascularbundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and...
throughout the plant. The vascular tissue in plants is arranged in long, discrete strands called vascularbundles. These bundles include both xylem and phloem...
outwards, towards the bark. In herbaceous plants, it occurs in the vascularbundles which are often arranged like beads on a necklace forming an interrupted...
A pteridophyte is a vascular plant (with xylem and phloem) that reproduces by means of spores. Because pteridophytes produce neither flowers nor seeds...
other is known as a vascularbundle. The evolution of vascular tissue in plants allowed them to evolve to larger sizes than non-vascular plants, which lack...
first two categories are not mutually exclusive, although usually a vascularbundle will contain primary xylem only. The branching pattern exhibited by...
They considered the monocotyledons to be a group of vascular plants (Vasculares) whose vascularbundles were thought to arise from within (Endogènes or endogenous)...
layer of mesophyll cells surrounding a tightly packed cholorophyllous vascularbundle sheath cells. This type of anatomy was termed Kranz anatomy in the...
formed in a stress tensor field. A vein is made up of a vascularbundle. At the core of each bundle are clusters of two distinct types of conducting cells:...
arrangement of the vascular tissues varies widely among plant species. Dicot stems with primary growth have pith in the center, with vascularbundles forming a...
Campanula rotundifolia. They are connected to the plant vascular system by a vascularbundle. Hydathodes are commonly seen in water lettuce, water hyacinth...
transportation of water and inorganic salts between the cortex and the vascularbundle, preventing water and inorganic salts from being transported to the...
central scar marks where the main vascularbundle of the leaf connected to the vascular system of the stem. This xylem bundle was composed only of primary...
subspecies and form. vascular Referring to the conducting tissues (xylem and phloem) of vascular plants. vascularbundle A bundle of vascular tissue in the primary...
The anatomical study showed the plant is a typical monocotyledonous vascularbundle arrangement. However, this added more confusion, as monocots have adventitious...
sometimes be found. The central and always present pit results from a vascularbundle that extended into the leaf from the stem, known as “parichnos,” a...
of botanical terms Walters, Dirk R.; Keil, David J. (1 January 1996). Vascular Plant Taxonomy (4th ed.). United States: Kendall/Hunt Publishing Company...
a compound vascularbundle. This bi- or tripolar vascularbundle has two or three distinct conduction strands encased by a common bundle sheath. At the...
leaves that are attached to the pseudostele by an outgrowth of the vascularbundle, leaving no leaf gap. Horsetails (Equisetum) bear only a single vein...
nodes. Stems are mostly hairless and green to purplish in color. The vascularbundle provides nutrients throughout the plant, with the xylem transporting...
reaching over a meter in length, but almost all just bear the one vascularbundle. An exception is the rare branching in some Selaginella species. The...
cells. Though vascularbundles in leaves are bilaterally symmetrical including the appendages of Stigmaria and the monarch vascularbundle, present rhizomes...
algae. They are similar in structure and function to the root hairs of vascular land plants. Similar structures are formed by some fungi. Rhizoids may...
fungal mycelium then destroys the plant ovary and connects with the vascularbundle originally intended for seed nutrition. The first stage of ergot infection...
Orchid leaves often have siliceous bodies called stegmata in the vascularbundle sheaths (not present in the Orchidoideae) and are fibrous. The structure...
early-diverging dicot groups have monocot characteristics such as scattered vascularbundles, trimerous flowers, and non-tricolpate pollen. In addition, some monocots...
diameter at the top, and around 15 to 30 cm (6 to 12 in) long. A woody vascularbundle runs along the root's axis. The flesh can be chalk-white or yellowish...
Global Information
