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Characterization of mutants affectin...

Nelson, Jennifer Marie.

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Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf./
Author:	Nelson, Jennifer Marie.
Description:	162 p.
Notes:	Chair: Michael Freeling.
Contained By:	Dissertation Abstracts International63-09B.
Subject:	Biology, Botany. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063501
ISBN:	049382393X

Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf.
Nelson, Jennifer Marie.

Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf. - 162 p.

Chair: Michael Freeling.

Thesis (Ph.D.)--University of California, Berkeley, 2002.

The aim of this research has been to investigate genes involved in patterning along the dorsoventral (d-v) axis of the maize leaf. The <italic> Rolled leaf1</italic> (<italic>Rld1</italic>) gene was originally identified using semi-dominant mutants that caused partial to complete flipping of the leaf's d-v axis. Here I report a more complete characterization of the mutant phenotype.

ISBN: 049382393XSubjects--Topical Terms:

1017825
Biology, Botany.

Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf.
LDR:03088nam 2200325 a 45 001 927800
005 20110425
008 110425s2002 eng d
020 $a 049382393X
035 $a (UnM)AAI3063501
035 $a AAI3063501
040 $a UnM $c UnM
100 1 $a Nelson, Jennifer Marie. $3 1251363
245 1 0 $a Characterization of mutants affecting the dorsoventral axis and stomatal development of the maize leaf.
300 $a 162 p.
500 $a Chair: Michael Freeling.
500 $a Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4034.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 2002.
520 $a The aim of this research has been to investigate genes involved in patterning along the dorsoventral (d-v) axis of the maize leaf. The <italic> Rolled leaf1</italic> (<italic>Rld1</italic>) gene was originally identified using semi-dominant mutants that caused partial to complete flipping of the leaf's d-v axis. Here I report a more complete characterization of the mutant phenotype.
520 $a A mosaic analysis was used to map the action of <italic>Rld1-O</italic> to the abaxial epidermis. This result taken with data from dosage analysis experiment, indicating the <italic>Rld1</italic> mutants are antimorphs, suggest that wild-type r<italic>ld1</italic> acts in the abaxial epidermis. Furthermore, the <italic>Rld1</italic> mutant phenotype implicates there is trans-epidermal signaling occurring. These results suggest that a signal in a single cell-thick tissue layer is responsible for maintaining polarity of tissue identity across the d-v axis. I present my model for the role of <italic>rld1</italic>+ in maintenance of d-v polarity.
520 $a The most severe allele of <italic>Rolled leaf1, Rld1-PB</italic>, has a number of phenes that are more fully characterized. I report my interpretation of how a single gene might be responsible for the pleiotropic phenotype. The conclusions I have drawn support the model of dorsoventral outgrowth put forth by Waites and Hudson. This model states that juxtaposition of abaxial and adaxial tissue is required for lamina outgrowth.
520 $a In Chapter 3, I report the findings from the dominant maize mutant <italic> Intarsial</italic>* (<italic>Int1</italic>*). <italic>Int1</italic>* mutants have the poorly penetrant phenotype of aberrant stomatal complexes. Investigations into the pattern of divisions leading to mutant stomatal complexes suggest stomatal initials play a role in inducing subsidiary formation from adjacent cell files. Furthermore, double mutant analysis of <italic>Int1</italic>* with <italic>pigmy1</italic> indicates there are separate mechanisms controlling cell division in epidermal ground tissue and the asymmetric divisions of stomatal complexes.
590 $a School code: 0028.
650 4 $a Biology, Botany. $3 1017825
650 4 $a Biology, Genetics. $3 1017730
650 4 $a Biology, Plant Physiology. $3 1017865
690 $a 0309
690 $a 0369
690 $a 0817
710 2 0 $a University of California, Berkeley. $3 687832
773 0 $t Dissertation Abstracts International $g 63-09B.
790 $a 0028
790 1 0 $a Freeling, Michael, $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063501