Initiation of the Vascular System in the Shoot of <i>Zea mays</i> L. (Poaceae). I. The Procambial Nodal Plexus

Pizzolato, Thompson Demetrio; Sundberg, Marshall D.

doi:10.1086/320143

Cited by 13 publications

(11 citation statements)

References 23 publications

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“…2B-2G) that support the idea of an initial isolation of the future monocotyledonous leaf traces. Such an idea is advanced by the students of the Poaceae (Hitch and Sharman 1971;Dannenhoffer and Evert 1994;Dengler et al 1997;Pizzolato andSundberg 2001, 2002;Pizzolato 2002), the Commelinaceae (Rohweder 1963;Pizzolato 2006), and the Costaceae (Pizzolato 2007). Isolated procambial leaf traces are most clearly demonstrated for the Arecaceae by Calamus (Tomlinson and Spangler 2002;Tomlinson and Zimmermann 2003;Tomlinson 2006).…”

Section: Discussionmentioning

confidence: 99%

“…In Symplocarpus (fig. 6), in the Poaceae (Pizzolato andSundberg 2001, 2002), in the Commelinaceae (Pizzolato 2006), and in the Costaceae (Pizzolato 2007), the meristematic cap is active too far away from the shoot apex to be involved in proximally making and capturing leaf traces. At this later time of formation, however, the meristematic cap links distal procambial strands.…”

Section: Discussionmentioning

confidence: 99%

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Procambial Initiation for the Vascular System in the Shoot of a Seedling ofSymplocarpus foetidus(Araceae)

Pizzolato

2008

International Journal of Plant Sciences

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Every procambial strand was mapped in the apical six disks of insertion comprising the shoot tip of Symplocarpus. Detection of longitudinally discontinuous procambia confirmed that the procambial leaf traces were originally isolated in this monocotyledonous shoot. The initially separate procambia of a nascent leaf trace became linked with a leaf as its leaf trace by further procambial differentiation among the procambial segments and the leaf to be served. The procambial components of the major leaf traces were formed by a succession of five waves within each of the superposed disks of insertion. Space for the additional procambia in the successive waves was made by the expansion growth of each disk. Waves 1-4 made the procambial components of the major leaf traces near the center of the disk, but wave 5 caused the lower end of a major trace to become centrifugal. The first intermediate leaf traces began after the major traces, since only waves 3-5 were involved. The mantle of the meristematic cap was the principal source of new isolated procambia during wave 5. The major and first intermediate traces comprised the inner procambial system. The last intermediate traces comprised the outer or cortical system. The last intermediate traces were made only during wave 5 outside of the meristematic cap. The upper part of a bud trace is like a last intermediate trace, but the lower part may become linked to the inner system by the meristematic cap. The patterns to the initiation of leaf traces discovered in Symplocarpus support a state of procambial initiation in monocotyledonous shoots that involves discontinuous strands.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Procambial Initiation for the Vascular System in the Shoot of a Seedling ofSymplocarpus foetidus(Araceae)

Pizzolato

2008

International Journal of Plant Sciences

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“…Some families lack one (Zimmermann and Tomlinson 1972;Pizzolato 2004). Except for studies in the Poaceae (Hitch and Sharman 1971;Pizzolato and Sundberg 2001), nodal plexus ontogeny is hardly described. Development of the nodal plexus of Costus is much closer to the pattern in the Poaceae than in that of the Commelinaceae (Pizzolato 2006).…”

Section: Discussionmentioning

confidence: 99%

“…One last aspect of the procambial differentiation that may be unique to the monocots requires introduction. The nodal plexus is the horizontal procambial system that develops among the axial systems (Hitch and Sharman 1971;Pizzolato and Sundberg 2001). As with the axial system, inner and outer procambial components compose the nodal plexus.…”

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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“…A more comprehensive study in maize mapped the appearance of vascular procambial zones in the developing disc of insertion, showing a complex pattern of vascular initiation (Pizzolato & Sundberg 2001). The vascular bundles may pass through a number of internodes in sugarcane (see Chapter 12, especially Fig.…”

Section: Development Of the Culm From The Shoot Apical Meristemmentioning

confidence: 99%

Anatomy and Morphology

Rae¹,

Martinelli²,

Dornelas³

2013

Sugarcane: Physiology, Biochemistry, and Functional Biology

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Initiation of the Vascular System in the Shoot of Zea mays L. (Poaceae). I. The Procambial Nodal Plexus

Cited by 13 publications

References 23 publications

Procambial Initiation for the Vascular System in the Shoot of a Seedling ofSymplocarpus foetidus(Araceae)

Procambial Initiation for the Vascular System in the Shoot of a Seedling ofSymplocarpus foetidus(Araceae)

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

Anatomy and Morphology

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