The Development of the Shoot in Alstroemeria and the Unit of Shoot Growth in Monocotyledons1

Priestley, J. H.; Scott, Lorna; Gillett, Edward.

doi:10.1093/oxfordjournals.aob.a090494

Cited by 55 publications

(24 citation statements)

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“…Those studied by Zimmermann and Tomlinson (1972) (Rhapis, Prionium, and Dracena) are like A. gerardii in features 1, 2 and 4 as is another palm, Ptychosperma, studied by Uhl (1976). A lstroemeria (Priestley, Scott, and Gillett, 1935) A lstroemeria (Priestley, Scott, and Gillett, 1935) …”

Section: Development Of the Vascular System-mentioning

confidence: 87%

The Vascular System of the Inflorescence Axis of Andropogon Gerardii (Gramineae) and Its Bearing on Concepts of Monocotyledon Vascular Tissue

Maze

1977

American J of Botany

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The vascular bundles in the inflorescence axis of Andropogon gerardii occur in inner and outer systems. The inner system is made up of large, early developing strands that, at earliest stages of development, are precocious (= the appendage they are to serve has not yet been initiated). The outer system consists of later developing smaller strands that are open ended in a proximal direction (= strands differentiate basipetally in the cortex below the appendage they serve). Bundles of both the inner and outer systems are not connected to other procambium early in their development but exist as isolated strands. The veins of the inner system of the inflorescence axis occur as sympodia. The presence of inner and outer systems in the vascular tissue is common to most monocotyledons. However, amongst monocotyledons, only certain grasses have been shown to have strands of the inner system that are isolated early in development. Many dicotyledons have large strands which are precocious and some have smaller, later developing strands which are open ended in a proximal direction, hence they occur as isolated strands. These smaller strands in dicotyledons occur between large strands. Certain dicotyledons have an inner and an outer system of veins. Of these, some have veins of the inner system that differ from the inner system bundles of monocotyledons in that they also form part of the outer system of veins, or develop at a different time. One other dicotyledon with an inner and outer system, Bougainvillea, differs from monocotyledons only in that the bundles of the outer system do not seem to be isolated early in their development and anastomoses are seen between the inner and outer systems. Thus, it appears that monocotyledons differ from dicotyledons only in the presence of independent inner and outer systems of vascular bundles in the former. Thus, the hypothesis of Zimmermann and Tomlinson that there are basic differences between monocotyledon and dicotyledon vascular systems is not substantiated. It is even suspected that monocotyledon and dicotyledon vascular systems will be demonstrated to be modifications of a basic plan consisting of large, acropetally differentiating and smaller, basipetally differentiating strands.

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Section: Development Of the Vascular System-mentioning

confidence: 87%

The Vascular System of the Inflorescence Axis of Andropogon Gerardii (Gramineae) and Its Bearing on Concepts of Monocotyledon Vascular Tissue

Maze

1977

American J of Botany

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“…Such transverse extension or stretching of the leaf traces in the proximal disks of insertion has been described in many monocotyledonous shoots (Priestley et al 1935;Sharman 1942;Zimmermann and Tomlinson 1967;Pizzolato 2006). Rarely is a cellular explanation of stretching included in such descriptions (Esau 1943).…”

Section: Introductionmentioning

confidence: 88%

“…Any trace that arises near enough in time and site to a particular leaf primordium is a candidate to become a procambial trace for that leaf (Zimmermann and Tomlinson 1972;Pizzolato 2002Pizzolato , 2004Pizzolato , 2006. There is agreement that some procambial traces for a leaf are initiated before the leaf primordium appears at the apex (Priestley et al 1935;Simpson and Philipson 1969;Zimmermann and Tomlinson 1972). However, Simpson and Philipson (1969) and Pizzolato (2004Pizzolato ( , 2006 caution that unclaimed traces can usually be explained as future lateral traces to leaves already on the apex.…”

Section: Introductionmentioning

confidence: 99%

Procambial Initiation for the Vascular System in the Aerial Shoot of Costus(Costaceae, Zingiberales)

Pizzolato

2007

International Journal of Plant Sciences

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to International Journal of Plant Sciences.All procambial leaf traces were mapped through the seven disks of insertion constituting a shoot tip of Costus curvibracteatus, a species of the monocotyledonous gingers. Leaf traces form during seven waves of procambial initiation in each of the successive disks. Each wave generates a complement of isolated procambial segments that link into the various procambial leaf traces. The major leaf traces form in an acropetal dot-todot sequence involving certain waves in at least five successive disks. The first intermediate traces involve different waves in fewer disks. Gaps occur between the proximal and distal procambial components that must be bridged in order to complete the leaf traces. Two of the waves furnishing procambia for the first intermediate traces come from a meristematic cap that then goes out of function to become the intermediate zone. It separates the inner system of procambia related to the major leaf traces from an outer system related to the intermediate leaf traces. At the completion of the inner system, a horizontal procambial network dedifferentiates from the ground parenchyma of the inner system to form the inner nodal plexus, while an outer nodal plexus forms during the last wave in the outer system. The isolated origin of procambial leaf traces in this species of ginger suggests that isolated procambial initiation occurs in many monocotyledonous shoots.

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“…While he did not state what type of phyllotaxy was present it was clear from his analysis of the fibrovascular system of the stem and successive leaves that the 5/13 t5rpe was present. Priestley et al (1935) have studied in detail the phyUotaxy of a monocotyledon in relation to the internal arrangement of the fibro-vascular system and the origin of new leaves at the meristem area. They discuss the possibility of a transition from a simple type of phyUotaxy to a more complex one, as being the logical result of an increase in the size of the meristem area.…”

Section: Phyllotaxis Of the Pineapplementioning

confidence: 99%

Developmental Studies of the Pineapple Ananas Comosus (L) Merr.

1936

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The Development of the Shoot in Alstroemeria and the Unit of Shoot Growth in Monocotyledons1

Cited by 55 publications

References 0 publications

The Vascular System of the Inflorescence Axis of Andropogon Gerardii (Gramineae) and Its Bearing on Concepts of Monocotyledon Vascular Tissue

The Vascular System of the Inflorescence Axis of Andropogon Gerardii (Gramineae) and Its Bearing on Concepts of Monocotyledon Vascular Tissue

Procambial Initiation for the Vascular System in the Aerial Shoot of Costus(Costaceae, Zingiberales)

Developmental Studies of the Pineapple Ananas Comosus (L) Merr.

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